201251514 六、發明說明： 【發明所屬之技術領域】 本發明是有關於-種放電管，特別是指一種放電管點 燈糸統。 【先前技術】 現有的一種放電管點燈電路，應用於一高電壓放電管 ，如冷陰極螢光燈管（CCFL)、陶瓷燈管（cpFL)及外電 極型冷陰極管（EEFL)等’該點燈電路包括一控制單元， 及一電連接該控制單元及該高電壓放電管間的高電壓變壓 器’透過該控制單元對該高電壓變壓器輸入一低電壓訊號 後’由該高電壓變麼器產生一高電壓訊號（ 600Vrms~1.5kVrms)以驅使該南電壓放電管發光。 然而’當該高電壓放電管發生異常時，如燈管斷裂、 漏氣'接觸不良等狀況時’該高電壓放電管與該高電壓變 壓器的高電壓端會對低電壓的金屬端產生高壓放電現象（ 即俗稱的跳火現象）’此時電壓一般在2.5kVrms以上，若此 時沒有關閉電源’則會使周遭的電子設備產生損壞，若持 續產生火花，還會有造成火災的危險》 【發明内容】 因此，本發明之目的，即在提供一種具有斷電保護功 能的放電管點燈系統。 於是，本發明放電管點燈系統，應用於一放電管，該 放電管點燈系統包含一控制單元、一高電壓輸出單元、一 保護模組，及一熱熔導線。 201251514 該控制單元包括一第一電壓控制端，及一第二電屋控 制端，該高電壓輸出單元包括一電連接該第一電壓控制端 的第一電壓輸入端、一電連接該第二電壓控制端的第二電 壓輸入端、一高電壓輸出端，及一低電壓輸出端，該高電 壓輸出端及該低電壓輸出端的至少其中一者電連接該放電 管’該保護模組設置於該高電壓輸出單元及該放電管之間 ，該熱熔導線串聯於該第一電壓控制端及該第一電壓輸入 端之間或該第二電壓控制端及該第二電壓輸入端之間或該 控制單元内，且包括一設置於該保護模組並於受到高電壓 產生電弧放電而引起的高熱時熔化斷開的熱熔部。 本發明之功效在於：藉由該熱熔導線的設置，當該高 電壓輸出單元因為負載異常而產生跳火現象時，該熱熔部 受高熱而斷開，使該高電壓輸出單元不再受到供電，進而 達到保護電路的功效。 【實施方式】 有關本發明之前述及其他技術内容、特點與功效，在 以下配合參考圖式之三個較佳實施例的詳細說明中，將可 清楚的呈現。 在本發明被詳細描述之前，要注意的是，在以下的說 明内容中，類似的元件是以相同的編號來表示。 參閱圖1、2、3，本發明放電管點燈系統之一第一較佳 實施例應用於一放電管6，該放電管點燈系統包含一控制單 疋2、一高電壓輸出單元3、一保護模組4，及一熱熔導線 201251514 該控制單7L 2包括-第—電壓控制端21，及—第二電 壓控制端22。於本實施例中’該控制單元2為多個電晶體 (圖未示）組成的驅動電路。 於本實施例中，該高電壓輸出單元3為高電壓變壓器 ，且包括一電連接於該控制單元2的輸入線圈31、一受該 輸入線圈31感應而輸出高電壓的輸出線圈32、位於該輸入 線圈31的兩相反端並分別電連接該第一電壓控制端2ι及 s玄第一電壓控制端22的一第一電壓輸入端及一第二電 壓輸入端34，及位於該輸出線圈32的兩相反端的一高電壓 輸出端35及一低電壓輸出端36,該高電壓輸出端％及該 低電壓輸出端36的至少其中一者電連接該放電管6。 於本實施例中，該高電壓輸出端35及該低電壓輸出端 36分別電連接於該放電管6的兩端以對該放電管6的兩端 進行供電，該放電管6為冷陰極螢光燈管，該高電壓輸出 k 35及該低電壓輸出端36共同輸出的額定電壓範圍為 1000V〜1500V。 該保護模組4設置於該高電壓輸出單元3及該放電管6 之間。於本實施例中，該保護模組4為一供該輸入線圈31 及該輸出線圈32缠繞的柱型支架41，該柱型支架41且有 相反設置的一輸入段411及一輸出段412，該輸入線圈31 繞設於該輸入段411，該輸出線圈32繞設於該輸出段412。 參閱圖1、2、4,該熱熔導線5串聯於該第一電壓控制 端21及該第一電壓輸入端33之間或該第二電壓控制端22 及該第二電壓輸入端34之間，且包括一設置於該保護模組 201251514 4並於受到高電壓產生電弧放電而引起的高熱時熔化斷開的 熱熔部51。 於本實施例中，該熱熔導線5串聯於該第二電壓控制 端22及該第二電壓輸入端34間’並繞設於該輪出段412 鄰近該高電壓輸出端35的部位，但也可以是串聯於該第一 電壓控制端21及該第一電壓輸入端33間或是串聯於該控 制單元2内的串聯迴路間，該熱熔導線5的材料為銅，但 也可以是銀銅合金，且線徑範圍為〇.〇3mm〜0.04mm。 §該控制早元2驅使該南電壓輸出單元3產生高電壓 時’即可驅使該放電管6導通而發光，當該放電管6發生 異常狀況而使該高電壓輸出端35因為負載異常而產生跳火 現象時’所產生的高熱會燒斷該熱熔導線5的熱炫部51， 使該熱熔導線5斷開而使相連接的該控制單元2停止繼續 對該高電壓輸出單元3的輸入線圈31持續供電，進而避免 跳火現象持續發生而對附近的電子零件產生破壞，並可避 免因持續跳火現象所可能產生的火災問題。 由於該熱熔導線5的斷開是藉由高壓放電所產生的電 弧將該熱熔部51燒斷，而與一般的保險絲是利用本身產生 的熱（因過載或過電流）而燒斷，因此在做法上明顯不同 〇 值得一提的是，該熱熔導線5也可以是直接設置於該 高電壓輸出單元3内，使該高電壓輸出單元3也可以電連 接於其他需要高電壓輸入的電氣元件，而同樣可達到斷電 保護的功效。 6 201251514 參閱圖5、6、7，本發明的—笛± ^ 該第:較隹實施例，其差異::在:?較佳實施例是類似於 相4為壓輸出單元3的纏繞並 相4该尚電壓輸出單元3 42、a 平兀」叹置的獨立零件，且包括-底部 42、一位於該底部42上方 Λ 員邛43、一位於該底部42及 間且供該熱熔部51設置的頸部44、-對設置於 該底部42且彼此電連接的第 、 ά0 „ ^ 得導鳊45、一對設置於該底 4 42且彼此電連接的第二 ,,B , 寻導鳊46、—對設置於該頂部 3且相互電連接的第三傳 對设置於該頂部43 相互電連接的第四傳導端48。 壓餘^ W 45串接於該高電屋輸出單元3的低電 壓輸…6及該放電管6的其中_端之間，該對第二傳導 =6.接於該高電壓輸出單元3的高電壓輸出^5 放電…其中另一端之間，該熱炼導線5的其中一端電 連接於該對第三傳導端47的其中—去 丹甲者，该熱熔導線5的其 一中另-端電連接於該對第四傳導端48的其中—者，該對第 二傳導端47及該對第四傳導端φ | 牙1寻等知48中不相鄰該熱溶導線5 的兩端串聯㈣第-電壓㈣端2 導線 次这第一電壓輸入端33 之間或該第二電壓控制端22及該第二電壓輸入端34之間 。於本實施例中’該對第三料端47及該對第四傳導端Μ 中不相鄰該熱料線5的兩料聯於該第-電壓控制端21 及該第一電壓輸入端33之間。 當該高電壓輸出單元3是由兩個變壓器共同組合而由 該高《輸出端35及該低電壓輸出端％輸出高電壓時， 201251514 高電壓會通過該保護模組4而驅使該放電管6導通發光， 而當該高電壓輸出端35產生跳火現象時，所產生的高熱會 使該保護模組4發熱，進而燒斷該熱熔導線5的熱溶部5ι ，使該熱炫導線51斷開而使該控制單元2停止繼續對該高 電壓輸出單元3持續供電，而同樣可達到斷電保護的功效 〇 參閱圖5、6、8，為該放電管點燈系統的另一變化例， 當該高電壓輸出單元3是由一個變壓器組成，而由該高電 壓輸出端35輸出一高電位，且通過該保護模組4的該對第 一傳導端45而輸入至該放電管6的其中一端，且該放電管 6的另一端接地時，也同樣可達到斷電保護的功效。 如此，該第二較佳實施例也可達到與上述第一較佳實 施例相同的目的與功效，並將該保護模組4以獨立零件的 使用方式進行應用。 參閱圖9，本發明的一第三較佳實施例是類似於該第一 較佳實施例，其差異之處在於： 該保護模組4為一脫離該高電壓輸出單元3的纏繞但 相鄰該高電壓輸出單元3設置的獨立零件，且包括一供該 熱熔部51纏繞的管體49，該高電壓輸出端35及該低電壓 輸出端36的至少其中一者電連接該放電管6的導線是穿過 該管體49。於本實施例中，該高電壓輸出端35電連接該放 電管6的導線穿過該管體49而電連接該放電管6。 當該高電壓輸出端35產生跳火現象時，所產生的高熱 會使該管體49發熱，進而燒斷纏繞於該管體49的熱炼部 8 201251514 51，使該熱熔導線51斷開而使該控制單元2停止繼續對該 尚電壓輸出單元3持續供電，而同樣可達到斷電保護的功 效。 如此，該第三較佳實施例也可達到與上述第一較佳實 施例相同的目的與功效，並將該保護模組4以獨立零件的 使用方式進行應用。 综上所述，藉由該熱熔導線5的設置，當該高電壓輸 出端35因為負載異常產生跳火現象時，該熱熔部5ι受高 熱而斷開，使高電壓輸出單元3不再受到供電，而達到保 護電路的功效，故確實能達成本發明之目的。 惟以上所述者，僅為本發明之較佳實施例而已，當不 能以此限定本發明實施之範圍’即大凡依本發明申請專利 範圍及發明說明内容所作之簡單的等效變化與修飾，皆仍 屬本發明專利涵蓋之範圍内。 【圖式簡單說明】 圖1是本發明放電管點燈系統的一第一較佳實施例的 電路示意圖； 圖2是該第一較佳實施例的一高電壓變壓器的立體圖 圖3是該第一實施例的該高電壓變壓器於另一視角的 立體圖； 圖4是該第一實施例的該高電壓變壓器的側視圖； 圖5是本發明放電管點燈系統的一第二較佳實施例的 一保護模組及一熱熔導線的立體示意圖； 201251514 圖6是該第二較佳實施例的該保護模組的俯視圖； 圖7是該第二較佳實施例於一種應用的電路示意圖； 圖8是該第二較佳實施例於另一種應用的電路示意圖 ;及 圖9是本發明放電管點燈系統的一第三較佳實施例的 電路示意圖。 10 201251514 【主要元件符號說明】 2…… •…控制單元 412… •…輸出段 21···.· •…第一電壓控制端 42·...· 底口P 22····. •…第二電壓控制端 43·.·.· …·頂部 3…… 南電壓輸出早元 44·..·· •…頸部 31····. •…輸入線圈 45·..·· …·第一傳導端 32·.··· •…輸出線圈 46·...· •…第__傳導端 33··.·· •…第一電壓輸入端 47···.· ·.··第三傳導端 34 •…第二電壓輸入端 48····. •…第四傳導端 35··.· 南電壓輸出知 49·.··· …·管體 36·.··· •…低電壓輸出端 5…… •…熱熔導線 4…… •…保護模組 51 ••… •…熱炼部 41···.· •…柱型支架 6…… •…放電管 411 ··· 輸入^又 11201251514 VI. Description of the Invention: [Technical Field] The present invention relates to a discharge tube, and more particularly to a discharge tube lamp system. [Prior Art] A conventional discharge tube lighting circuit is applied to a high voltage discharge tube such as a cold cathode fluorescent lamp (CCFL), a ceramic tube (cpFL), and an external electrode type cold cathode tube (EEFL). The lighting circuit includes a control unit, and a high voltage transformer electrically connected between the control unit and the high voltage discharge tube. After the low voltage signal is input to the high voltage transformer through the control unit, what is changed by the high voltage? The device generates a high voltage signal (600Vrms~1.5kVrms) to drive the south voltage discharge tube to emit light. However, when the abnormality occurs in the high-voltage discharge tube, such as when the lamp is broken or the air leaks are in poor contact, the high voltage discharge tube and the high voltage end of the high voltage transformer generate a high voltage discharge to the low voltage metal end. Phenomenon (known as the phenomenon of flashover) 'At this time, the voltage is generally above 2.5kVrms. If the power is not turned off at this time, it will cause damage to the surrounding electronic equipment. If sparks continue to occur, there will be a fire hazard." SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a discharge tube lighting system having a power-off protection function. Therefore, the discharge tube lighting system of the present invention is applied to a discharge tube, and the discharge tube lighting system comprises a control unit, a high voltage output unit, a protection module, and a heat fusion wire. 201251514 The control unit includes a first voltage control terminal and a second electrical house control terminal, the high voltage output unit includes a first voltage input terminal electrically connected to the first voltage control terminal, and an electrical connection to the second voltage control terminal a second voltage input terminal, a high voltage output terminal, and a low voltage output terminal, wherein at least one of the high voltage output terminal and the low voltage output terminal is electrically connected to the discharge tube. The protection module is disposed at the high voltage Between the output unit and the discharge tube, the hot melt wire is connected in series between the first voltage control terminal and the first voltage input terminal or between the second voltage control terminal and the second voltage input terminal or the control unit And including a hot melt portion which is disposed in the protection module and melts and breaks when subjected to high heat caused by arcing of a high voltage. The effect of the present invention is that, by the arrangement of the hot-melt wire, when the high-voltage output unit generates a flashover phenomenon due to a load abnormality, the hot-melt portion is disconnected by high heat, so that the high-voltage output unit is no longer subjected to Power is supplied to achieve the protection of the circuit. The above and other technical contents, features and effects of the present invention will be apparent from the following detailed description of the preferred embodiments of the drawings. Before the present invention is described in detail, it is noted that in the following description, similar elements are denoted by the same reference numerals. Referring to Figures 1, 2 and 3, a first preferred embodiment of the discharge tube lighting system of the present invention is applied to a discharge tube 6, the discharge tube lighting system comprising a control unit 2, a high voltage output unit 3, A protection module 4, and a hot-melt wire 201251514. The control block 7L 2 includes a -th voltage control terminal 21, and a second voltage control terminal 22. In the present embodiment, the control unit 2 is a drive circuit composed of a plurality of transistors (not shown). In the embodiment, the high voltage output unit 3 is a high voltage transformer, and includes an input coil 31 electrically connected to the control unit 2, and an output coil 32 that is induced by the input coil 31 to output a high voltage. The two opposite ends of the input coil 31 are electrically connected to a first voltage input terminal of the first voltage control terminal 2 and the first voltage control terminal 22 and a second voltage input terminal 34, and the second voltage input terminal 34 is located at the output coil 32. A high voltage output terminal 35 and a low voltage output terminal 36 at opposite ends, at least one of the high voltage output terminal % and the low voltage output terminal 36 are electrically connected to the discharge tube 6. In this embodiment, the high voltage output terminal 35 and the low voltage output terminal 36 are electrically connected to both ends of the discharge tube 6 to supply power to both ends of the discharge tube 6. The discharge tube 6 is a cold cathode The light tube, the high voltage output k 35 and the low voltage output terminal 36 output a common voltage range of 1000V~1500V. The protection module 4 is disposed between the high voltage output unit 3 and the discharge tube 6. In the embodiment, the protection module 4 is a column type bracket 41 for winding the input coil 31 and the output coil 32. The column holder 41 has an input section 411 and an output section 412 which are oppositely disposed. The input coil 31 is wound around the input section 411, and the output coil 32 is wound around the output section 412. Referring to FIGS. 1 and 2, the hot-melt wire 5 is connected in series between the first voltage control terminal 21 and the first voltage input terminal 33 or between the second voltage control terminal 22 and the second voltage input terminal 34. And including a heat-melting portion 51 which is disposed on the protection module 201251514 4 and melts and breaks when subjected to high heat caused by arcing of a high voltage. In this embodiment, the hot-melt wire 5 is connected in series between the second voltage control terminal 22 and the second voltage input terminal 34 and is disposed around the portion of the wheel-out segment 412 adjacent to the high-voltage output terminal 35, but Alternatively, it may be connected in series between the first voltage control terminal 21 and the first voltage input terminal 33 or in series with the series circuit in the control unit 2. The material of the hot-melt wire 5 is copper, but may also be silver. Copper alloy, and the wire diameter range is 〇.〇3mm~0.04mm. § The control element 2 drives the south voltage output unit 3 to generate a high voltage, which can drive the discharge tube 6 to conduct and emit light. When the discharge tube 6 is abnormal, the high voltage output terminal 35 is generated due to an abnormal load. The high heat generated during the flashover phenomenon blows the heat-shrinking portion 51 of the hot-melt wire 5, causing the hot-melt wire 5 to be disconnected to stop the connected control unit 2 from continuing to the high-voltage output unit 3. The input coil 31 continues to supply power, thereby preventing the occurrence of a flashover phenomenon from occurring and causing damage to nearby electronic components, and avoiding a fire problem that may occur due to a continuous flashover phenomenon. Since the hot-melt wire 5 is disconnected by the arc generated by the high-voltage discharge, the hot-melt portion 51 is blown, and the general fuse is blown by the heat generated by itself (overload or overcurrent). The method is obviously different. It is worth mentioning that the hot-melt wire 5 can also be directly disposed in the high-voltage output unit 3, so that the high-voltage output unit 3 can also be electrically connected to other electrical circuits requiring high-voltage input. Components, but also the power-off protection. 6 201251514 Referring to Figures 5, 6, and 7, the present invention - flute ± ^ This: compared to the embodiment, the difference: in: ? The preferred embodiment is similar to the phase 4 is the winding output phase of the pressure output unit 3 4 The voltage output unit 3 42 , a is a separate component of the sigh, and includes a bottom portion 42 , an upper portion 42 above the bottom portion 42 , a bottom portion 42 and a portion for the hot melt portion 51 . a neck portion 44, a pair of ά0 „ ^ 设置 45 disposed on the bottom portion 42 and electrically connected to each other, a pair of second electrodes disposed on the bottom portion 4 42 and electrically connected to each other, B, searching for 鳊46. A third conduction pair disposed on the top 3 and electrically connected to each other is disposed at a fourth conduction end 48 electrically connected to the top portion 43. The voltage remaining is connected to the low output of the high electric house output unit 3 Between the voltage input ... 6 and the _ terminal of the discharge tube 6, the pair of second conduction = 6. The high voltage output of the high voltage output unit 3 discharges 5 ... between the other end, the hot wire One end of 5 is electrically connected to the pair of third conductive ends 47, and one of the other ends of the hot-melt wire 5 is electrically connected to the pair of fourth One of the leading ends 48, the pair of second conducting ends 47 and the pair of fourth conducting ends φ | teeth 1 are known to be adjacent to each other in series 48 (4) first-voltage (four) end 2 The wire is between the first voltage input terminal 33 or the second voltage control terminal 22 and the second voltage input terminal 34. In the embodiment, the pair of the third material end 47 and the pair of fourth conduction ends The two materials of the hot feed line 5 that are not adjacent to each other are connected between the first voltage control terminal 21 and the first voltage input terminal 33. When the high voltage output unit 3 is jointly combined by two transformers, When the high output voltage is generated, The generated high heat causes the protection module 4 to generate heat, thereby blowing the hot-melt portion 5 of the hot-melt wire 5, causing the heat-shining wire 51 to be disconnected to stop the control unit 2 from continuing to the high-voltage output unit 3. Continuous power supply, but also the power-off protection effect. See Figures 5, 6, and 8 for the discharge tube point. Another variation of the lamp system, when the high voltage output unit 3 is composed of a transformer, and a high potential is output from the high voltage output terminal 35, and passes through the pair of first conductive ends 45 of the protection module 4. When the one end of the discharge tube 6 is input, and the other end of the discharge tube 6 is grounded, the power-off protection effect can also be achieved. Thus, the second preferred embodiment can also achieve the first preferred embodiment described above. For the same purpose and function, the protection module 4 is applied in the form of independent parts. Referring to Figure 9, a third preferred embodiment of the present invention is similar to the first preferred embodiment, and the difference is The protection module 4 is a separate component that is disposed away from the high voltage output unit 3 but adjacent to the high voltage output unit 3, and includes a tube body 49 for winding the hot melt portion 51. A wire that electrically connects at least one of the high voltage output terminal 35 and the low voltage output terminal 36 to the discharge tube 6 passes through the tube body 49. In the present embodiment, the high voltage output terminal 35 electrically connects the wire of the discharge tube 6 through the tube body 49 to electrically connect the discharge tube 6. When the high voltage output terminal 35 generates a flashover phenomenon, the generated high heat causes the tube body 49 to generate heat, and then the heat refining portion 8 201251514 51 wound around the tube body 49 is blown, and the hot melt wire 51 is disconnected. The control unit 2 stops the continuous supply of power to the voltage output unit 3, and the power-off protection effect can also be achieved. Thus, the third preferred embodiment can achieve the same purpose and effect as the first preferred embodiment described above, and the protection module 4 can be applied in the form of use of separate parts. In summary, by the arrangement of the hot-melt wire 5, when the high-voltage output terminal 35 generates a flashover phenomenon due to a load abnormality, the hot-melt portion 5 is disconnected by high heat, so that the high-voltage output unit 3 is no longer It is indeed possible to achieve the object of the present invention by receiving power and achieving the effect of protecting the circuit. However, the above is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, that is, the simple equivalent changes and modifications made by the scope of the invention and the description of the invention, All remain within the scope of the invention patent. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a circuit diagram of a first preferred embodiment of a discharge tube lighting system of the present invention; FIG. 2 is a perspective view of a high voltage transformer of the first preferred embodiment; FIG. FIG. 4 is a side view of the high voltage transformer of the first embodiment; FIG. 5 is a second preferred embodiment of the discharge tube lighting system of the present invention; FIG. 6 is a plan view of the protection module of the second preferred embodiment; FIG. 7 is a schematic circuit diagram of the second preferred embodiment in an application; 8 is a circuit diagram of another application of the second preferred embodiment; and FIG. 9 is a circuit diagram of a third preferred embodiment of the discharge tube lighting system of the present invention. 10 201251514 [Description of main component symbols] 2... •...control unit 412... •...output section 21······...first voltage control terminal 42·...· bottom port P 22····. ...the second voltage control terminal 43·.·.···top 3... The south voltage output is early 44..···•...the neck 31····....the input coil 45·..·... • The first conduction end 32·····•...the output coil 46·...·•...the __conducting end 33······...the first voltage input end 47········· · Third conduction end 34 •...Second voltage input terminal 48····.•...fourth conduction terminal 35··.· South voltage output knows 49·······tube body 36·.··· •...low voltage output terminal 5... •...hot melt wire 4... •...protection module 51 ••... •...heating section 41·····•...column bracket 6...•...discharge tube 411 ··· Enter ^11