201010225 九、發明說明： 【發明所屬之技術領域】 且特別是有關於一種 本發明是有關於一種保護裝置 防雷擊之過電壓電流保護裝置。 【先前技術】 打雷閃電是普遍的自然現象，但是如果不注意，未能 做好防範措施，對於生命財產的威脅不可輕匆。 ▲-般而言，由於電子設備的特性，只要；壓不穩定， 就可能造成機件的問題，而一次雷擊的電壓可高達數百萬 伏特，如此大能量的高電壓，會對電子產品產生重大之危 害。-般而言，雷擊通常是透過暴露於大自然中之外接導 線，將雷擊產生之感應電壓M合人電子設備中而破壞整個 電子系統。 因此，如何將雷擊耗合入電子設備中之能量減到最 低’及成為追求之目標。 【發明内容】 ，此本發明的目的就是在提供—種可降低雷擊電壓/ 耦合入電子設備中之過電壓電流保護裝置。 裝罟:甘rb述之目本發明提出一種過電壓電流保護 外接導線/過電壓電流保護襄置係位於—電子設備與一 電子执備:用以防止一雷擊產生之過電壓電流耦合入該 —電I，位於至少包含：一基板具有一導電區與一絕緣區； 1導電區，具有-第-端與-第二端，其中 201010225 該電阻之尺寸至少為1218, 該電阻距離該絕緣區至少4〇 密耳；一第一壓敏電阻位於該導電區，其中該第一壓敏電 阻之一端耦接該電阻之該第—端，該第一壓敏電阻之另一 端接地；以及一第二壓敏電阻，位於該導電區，其中該第 二壓敏電阻之一端耦接該電阻之該第二端，該第二壓敏電 阻之另一端接地。 藉由上述重新安排電阻的尺寸大小，並配合電阻與絕 • 緣間的佈局尺寸，可避免因雷擊產生之感應電壓或電流耦 合入電子設備中而破壞整個電子設備。 【實施方式】 第1圖緣示了根據本發明一較佳實施例之過電壓電流 保護裝置。此過電壓電流保護裝置1〇〇包括由功率電阻 R1，以及兩壓敏電阻R2和R3所组成之冗型電路1〇3，此 π型電路103位於一連接器1〇1和電子設備1〇2中，用以 防止防範雷擊產生之感應電壓或電流由與連接器1〇1相接 之電路導體耦合入電子設備1〇3中而破壞整個電子設備 103 » 其中連接器101，例如與一暴露於大自然中之電路導 體耦接，此電路導體例如是一電纜線。電子設備1〇3，例如 為一監視系統。而電阻尺丨，在一較佳實施例中，其包裝尺 寸至少需大於1218，亦即大於0.12吋*〇.18叫，例如可為 1218、2512和2030，且電阻尺1與絕緣距離至少為4〇111山 (密耳）（約1mm)。在一實施例中如第2圖所示，電阻R1 形成於一印刷電路板200之上，一銅箔104作為電阻R1和 201010225 壓敏電阻R2和R3及電子設備1〇2間之 與印刷電路板200之絕緣處1()5 、、電阻R1 距雜心丨* 即與鋼们G4之邊緣處 圖^ (約1麵）。值得注意的是，於第2 圖中為方便說明’歸出電阻R1、印刷電路板綱和銅箱201010225 IX. Description of the invention: [Technical field to which the invention pertains] and particularly related to the invention The invention relates to an overvoltage and current protection device for protection against lightning strikes. [Prior Art] Thunder and lightning are common natural phenomena, but if you don't pay attention, you can't take precautions. The threat to life and property cannot be rushed. ▲- Generally speaking, due to the characteristics of electronic equipment, as long as the pressure is unstable, it may cause problems of the machine, and the voltage of a lightning strike can be up to several million volts. The high voltage of such a large energy will produce electronic products. A major hazard. In general, lightning strikes usually destroy the entire electronic system by exposing the exposed wires outside the nature to the induced voltage M generated by the lightning strikes. Therefore, how to minimize the energy consumption of lightning strikes into electronic devices has become the goal of pursuing. SUMMARY OF THE INVENTION It is an object of the present invention to provide an overvoltage current protection device that reduces lightning strike voltage/coupled into an electronic device. The invention proposes an overvoltage and current protection external wire/overvoltage current protection device located in the electronic device and an electronic device: to prevent an overvoltage current generated by a lightning strike from being coupled into the device- The electric device I is located at least: a substrate having a conductive region and an insulating region; and a conductive region having a first end and a second end, wherein the size of the resistor is at least 1218, and the resistor is at least 1218 from the insulating region. 4〇密耳; a first varistor is located in the conductive region, wherein one end of the first varistor is coupled to the first end of the resistor, the other end of the first varistor is grounded; and a second The varistor is located in the conductive region, wherein one end of the second varistor is coupled to the second end of the resistor, and the other end of the second varistor is grounded. By resizing the resistors and matching the layout between the resistors and the insulation, it is possible to prevent the induced voltage or current generated by the lightning strike from being coupled into the electronic device and destroying the entire electronic device. [Embodiment] Fig. 1 shows an overvoltage and current protection device according to a preferred embodiment of the present invention. The overvoltage current protection device 1 includes a redundant circuit 1〇3 composed of a power resistor R1 and two varistor R2 and R3, and the π-type circuit 103 is located at a connector 1〇1 and an electronic device 1〇 In 2, the induced voltage or current for preventing the occurrence of lightning strike is coupled into the electronic device 103 by the circuit conductor connected to the connector 101 to destroy the entire electronic device 103. wherein the connector 101, for example, is exposed The circuit conductor is coupled in nature, and the circuit conductor is, for example, a cable. The electronic device 1〇3 is, for example, a monitoring system. In the preferred embodiment, the package size is at least greater than 1218, that is, greater than 0.12 吋*〇.18, for example, 1218, 2512, and 2030, and the resistance rule 1 and the insulation distance are at least 4〇111 mountain (mil) (about 1mm). In an embodiment, as shown in FIG. 2, the resistor R1 is formed on a printed circuit board 200, and a copper foil 104 is used as a resistor R1 and 201010225 between the varistor R2 and R3 and the electronic device 1 and 2. The insulation of the board 200 is 1 () 5, the resistance R1 is from the miscellaneous 丨 *, that is, at the edge of the steel G4 (about 1 side). It is worth noting that in Figure 2, for convenience, 'return resistor R1, printed circuit board and copper box
H)4。而驗電阻R2 # R3其電壓與電流並不遵守歐姆定 律’而為非線性關係’當兩端所加電壓低於標準額定電壓 值時，壓敏電阻的電阻值接近無窮大，幾乎無電流流過； 當兩端所加電壓略高於標準額定電壓值時，壓敏電阻由高 阻抗狀態變爲低阻抗狀態，而允許大電流通過。 门 在此電路架構下，當屋内或屋外電路導體，遭間接雷 擊時產生感應電壓和電流，當加在疋型電路1〇3中之兩壓 敏電阻R2和R3兩端的電壓超過其工作電壓時，其阻值降 低，使高壓能量消耗在壓敏電阻R2和R3上，將超出電子 設備102可接受範圍外的感應電壓和電流信號迅速引入壓 敏電阻R2和R3，保護電子設備1 〇2。 综合上述所言，本發明藉由將電路板雷擊的對策加在 產品輸出輸入端，把輸出輸入端有可能被雷擊破壞的連接 器’藉由兩壓敏電阻R2和R3將雷擊的能量導出，藉以將 雷擊耗合的能量減到最低。如此就不會影響到電子設備主 板裝置上之零件。藉由本發明之裝置’在目前法規的測試 標準（IEC61000-4-5 )下，可將耐受程度從1KV提升到 5KV，因此可大幅減少產品損壞的問題，進而相對提高產 品附加價值。 雖然本發明已以一較佳實施例揭露如上，然其並非用 以限定本發明，任何熟習此技藝者，在不脫離本發明之精 201010225 因此本發明之保 為準。 神和範圍内’當可作各種之更動與潤錦， 護範圍當視後附之申請專利範圍所界定者 【圖式簡單說明】 為讓本發明之上述和其他目的、特徵、優點與實施例 能更明顯易懂，所附圖式之詳細說明如下： 第1圖所示為根據本發明一較佳具體實施例之之數位 電視天線概略圖示。 第2圖所示為本發明電阻R1形成於—印刷電路板上之 概略圖示。 【主要元件符號說明】 R1功率電阻 R2和R3壓敏電阻 100過電壓電流保護裝置 參 101連接器 102電子設備 103 7Γ型電路 104鋼箔 ⑺5絕緣處 2〇〇印刷電路板 dl距離H) 4. And the resistance R2 # R3 whose voltage and current do not follow Ohm's law' is a nonlinear relationship' When the voltage applied to both ends is lower than the standard rated voltage, the resistance of the varistor is close to infinity, and almost no current flows. When the voltage applied to both ends is slightly higher than the standard rated voltage, the varistor changes from a high-impedance state to a low-impedance state, allowing a large current to pass. Under this circuit structure, when the conductors in the house or outside the house are indirectly struck by lightning, the induced voltage and current are generated. When the voltage across the varistor R2 and R3 in the 疋-type circuit 1〇3 exceeds the operating voltage The resistance value is lowered, so that the high voltage energy is consumed on the varistor R2 and R3, and the induced voltage and current signals beyond the acceptable range of the electronic device 102 are quickly introduced into the varistor R2 and R3 to protect the electronic device 1 〇2. In summary, the present invention extracts the energy of the lightning strike by the two varistors R2 and R3 by adding a countermeasure against lightning strike of the circuit board to the output input end of the product, and the connector having the output input end that may be damaged by lightning strikes. In order to minimize the energy consumed by lightning strikes. This will not affect the parts on the main unit of the electronic device. With the device of the present invention, the tolerance of the current regulation (IEC61000-4-5) can be increased from 1KV to 5KV, thereby greatly reducing the problem of product damage and thereby increasing the added value of the product. While the present invention has been described above in terms of a preferred embodiment, it is not intended to limit the scope of the present invention, and the invention may be practiced without departing from the scope of the invention. The above and other objects, features, advantages and embodiments of the present invention are set forth in the <RTIgt; </ RTI> <RTIgt; </ RTI> <RTIgt; The details of the drawings are as follows: Figure 1 is a schematic illustration of a digital television antenna in accordance with a preferred embodiment of the present invention. Fig. 2 is a schematic view showing that the resistor R1 of the present invention is formed on a printed circuit board. [Main component symbol description] R1 power resistor R2 and R3 varistor 100 overvoltage current protection device Reference 101 connector 102 electronic device 103 7Γ type circuit 104 steel foil (7) 5 insulation 2 〇〇 printed circuit board dl distance