♦ M320818 八、新型說明： 【新型所屬之技術領域】 本創作係關於一種發光二極體模組之定電流裝置，尤 才曰一種可根據實際量測特性隨機調整電流規格之定電流裝 【先前技術】 由於發光二極體具有省電'壽命長、低廢熱等優點， 近年來已由工業用途成功地跨足到民生用途。為了提升發 光二極體的亮度達一定程度，多半由複數發光二極體串接 成模組，再視需要令多數模組並聯後以產生足夠亮度之光 線。 如第三圖即揭示有一發光二極體模組之線路示意圖， 其令複數發光二極體模組（70)在並聯模式下由一直流電源 VC進行供電，每一發光二極體模組（7〇)係由複數發光二極 體串接組成。在前述並聯架構下，通過每一發光二極體模 組（70)的電流理論上應屬相同，惟事實不然，原因在於： 發光二極體可能因晶片本身或封裝過程的差異，造成順向 電壓（VF)值的極大落差，一般而言，紅/黃類發光二極體 之VF值約1 ·8〜2.8V，黃/藍/白光發光二極體的vf值 約2·8〜4.0V。由於VF值互異，以致前述發光二極體模組 的電流變化範圍相當大。解決前述電流變化懸殊問題，最 直接的方法係令一阻值匹配於VF值的電阻R1 ~RN串接於 發光二極體模組（70)的電路迴路上，藉以調節各路發光二 • M320818 極體模組（70)上的電流，進而符合產品總電流規格。 但刖述作法往往會因產品製造完成後的檢測值與原設 計不同，以致於必須在產品完成後，花費大量人力更換電 阻，以符合電流規格的要求，如是狀況下勢必影響生產效 率’並使製造成本相對提高。 如第四圖所示，係具有定電流措施的發光二極體模組 ，主要採用類比定電流技術，其利用一電流檢測電路（81) 祆測迴路上的電流，再透過一電流控制電路（82)進行定電 流控制。前述作法的優點係可自動判別發光二極體的VF 值’進而自動調整直流電源VC的輸出電壓，使電流趨於 固定。但缺點在於電路構造複雜，元件成本較高，對於低 单h的發光一極體產品，並不符合成本效益。 【新型内容】 由上述可知，既有發光二極體產品在尋求電流固定的 課題上，分別面臨亡羊補牢耗時費用及技術成本昂貴等問 題’仍待進一步謀求更經濟實用的解決方案。 因此本創作主要目的在提供一種發光二極體模組之 可凋式疋電流裝置，其可在發光二極體產品製造完成後， 根據實際特性可選擇地調節迴路阻抗，以符合電流規格， 其技術成本低廉且簡便實用。 為達成前述目的採取的主要技術手段係令一定電流裝 置串接於發光二極體模組的電源迴路上，該定電流裝置包 括： .M320818 複數相互串接的電阻； 複數接點，係分別跨接於每一電阻的兩端； 利用接點的通斷決定對應連接的電阻是：^人迴路， 作為調二電机之用，藉由該等設計，可根據發光二極體模 組實際量測所得的順向電壓值，隨機且可選擇地決定切入 電阻的數量’如此—來’不僅實施簡單便利，且技術成本 低廉’而有效解決既有發光二極體產品尋求電流固定時所 遭遇的問題。♦ M320818 VIII. New description: 【New technical field】 This creation is about a constant current device for a light-emitting diode module, especially a constant current device that can randomly adjust the current specification according to the actual measurement characteristics. Technology] Since the light-emitting diode has the advantages of long life saving, low waste heat, etc., it has been successfully used for industrial use in industrial applications in recent years. In order to increase the brightness of the light-emitting diode to a certain extent, most of the plurality of light-emitting diodes are connected in series to form a module, and then most of the modules are connected in parallel to generate a light of sufficient brightness. As shown in the third figure, a schematic diagram of a circuit of a light-emitting diode module is disclosed, which enables a plurality of light-emitting diode modules (70) to be powered by a DC power source VC in a parallel mode, and each LED module ( 7〇) is composed of a plurality of light-emitting diodes connected in series. In the foregoing parallel architecture, the current through each of the LED modules (70) should theoretically be the same, but the fact is not the case: the LED may be caused by the difference of the wafer itself or the packaging process. The maximum drop of the voltage (VF) value, in general, the VF value of the red/yellow light-emitting diode is about 1 · 8 ~ 2.8V, and the vf value of the yellow / blue / white light emitting diode is about 2 · 8 ~ 4.0 V. Since the VF values are different, the current range of the above-mentioned light-emitting diode module is quite large. To solve the aforementioned problem of disparity in current variation, the most direct method is to connect a resistor R1 ~ RN whose resistance value is matched with the VF value to the circuit loop of the LED module (70), thereby adjusting the illumination of each channel. The current on the pole module (70), which in turn meets the product's total current specification. However, the method of description is often different from the original design after the completion of the product manufacturing, so that after the completion of the product, it is necessary to replace the resistance with a large amount of manpower to meet the requirements of the current specification. If the situation is bound to affect the production efficiency, Manufacturing costs are relatively high. As shown in the fourth figure, the LED module with constant current measures mainly uses analog constant current technology, which uses a current detecting circuit (81) to measure the current on the loop and then pass through a current control circuit ( 82) Perform constant current control. The advantage of the foregoing method is that the VF value of the light-emitting diode is automatically discriminated and the output voltage of the DC power source VC is automatically adjusted to make the current tend to be fixed. However, the disadvantage is that the circuit structure is complicated and the component cost is high, which is not cost-effective for a low-h single-emitting one-pole product. [New content] As can be seen from the above, in the case of the problem that the light-emitting diode products are required to fix the current, they are faced with the problem of time-consuming and costly technical costs, and it is still necessary to further seek a more economical and practical solution. Therefore, the main purpose of the present invention is to provide a light-emitting diode module capable of withstanding a current device, which can selectively adjust the loop impedance according to actual characteristics after the manufacture of the light-emitting diode product to meet the current specification. The technology is inexpensive and simple and practical. The main technical means adopted to achieve the above purpose is to connect a certain current device in series with the power supply circuit of the LED module. The constant current device includes: .M320818 multiple resistors connected in series; multiple contacts, respectively Connected to the two ends of each resistor; the on-off of the contact determines the resistance of the corresponding connection is: ^ human circuit, used as the second motor, with the design, according to the actual amount of the LED module The measured forward voltage value randomly and selectively determines the amount of the cut-in resistance 'so---not only simple and convenient implementation, but also low in technology cost', and effectively solves the problem that the existing light-emitting diode product encounters when the current is fixed. problem.
前述的接點為一常開接點。 刖述接點係由相對的焊點所構成，以跳接㈠uMpER) 方式接通。 前述的接點為一常閉接點。 别述的接點係由一開關構成。 【實施方式】 如第一圖所示，揭示有本創作一較佳實施例的線路示 意圖’主要係令複數發光二極體模組（1 〇)在並聯模式下由 一直流電源VC所供電，每一發光二極體模組（1〇)又分別 與一定電流裝置（20)串接，該定電流裝置（20)包括有·· 複數相互串接的電阻R1〜RN ; 複數接點J1〜JN ’係分別跨接於每一電阻ri〜rn的 兩知，於本貫施例中’該等接點j 1〜j N由兩相對的空接焊 點（PAD)所構成，於本實施例中，該等空接焊點常態下係 呈開路狀’當任一接點空接時’係令其對應連接的電阻切 • M320818 入迴路，若任一接點短路時，即對迴路提供一繞過電阻的 旁路路徑，該電阻遂不切入迴路。前述以空接焊點構成之 接點，係以跳線方式使其接通。 又請參閱第二圖示，係本創作又一較佳實施例，其大 致架構與前一實施例相同，仍在發光二極體模組（10)的電 源迴路上分別串接一定電流裝置（20，），該定電流裝置（2〇，) 仍包括複數相互串接的電阻R1〜RN，每一電阻R1〜rN的 兩端分別構成一接點S1〜SN，於本實施例中，該等接點 S1〜SN係分別由一開關所構成，利用開關接點的通斷決定 對應連接的電阻R1〜RN是否切入迴路作為限流電流之用 〇 由上述說明可瞭解本創作各較佳實施例的具體構造， 至於其工作原理詳如以下所述： 如前揭所述，發光二極體因晶片本身或製程條件不同 等因素的影響’造成不同的發光二極體有不同的VF值， 而即使單一發光二極體的VF值變動微小，但如前揭所述 ，目前發光二極體的應用方式，係集多數以產生足夠亮度 之光線，在複數串接構成模組，各模組又在並聯模式下供 電的狀況下，VF值積少成多，造成總電流的變化即非常顯 著。因此，本創作利用前述阻流電阻的可調式設計，可依 產品實際量測的VF值決定切入的總限流電阻，進而調節 總電流於一固定範圍内，達成定電流之目的。而前述技術 之實施門檻低，不僅成本低且簡便實用，且有效解決了發 光二極體模組產品在定電流課題上所遭遇的問題。 ,M320818 【圖式簡單說明】 第圖·係本創作一較佳實施例之電路圖。 第一圖·係本創作又一較佳實施例之電路圖。 第一圖·係傳統發光二極體模組之線路示意圖。 第四圖·係傳統發光二極體模組之定電流電路方塊圖 【主要元件符號說明】 (1〇)發光二極體模組 （20)(20’）定電流裝置 (70)發光二極體模組 (81)電流檢測電路 （82)電流控制電路The aforementioned contact is a normally open contact. The contact points are made up of opposite solder joints and are connected by jumper (1) uMpER). The aforementioned contact is a normally closed contact. The other contacts are composed of a switch. [Embodiment] As shown in the first figure, a schematic diagram of a circuit of a preferred embodiment of the present invention is disclosed. The main reason is that the complex LED module (1 〇) is powered by the DC power source VC in the parallel mode. Each of the light-emitting diode modules (1) is connected in series with a constant current device (20), and the constant current device (20) includes a plurality of resistors R1 to RN connected in series with each other; a plurality of contacts J1~ The JN 'system is connected to each of the resistors ri~rn, respectively. In the present embodiment, the contacts j 1 to j N are composed of two opposing open solder joints (PADs). In the example, the solder joints are normally open-circuited. 'When any contact is vacant,' the corresponding resistance is cut. • M320818 enters the loop. If any contact is short-circuited, the loop is provided. A bypass path bypassing the resistor, the resistor does not cut into the loop. The contact formed by the blank solder joint is turned on by a jumper. Please refer to the second embodiment, which is another preferred embodiment of the present invention. The general structure is the same as that of the previous embodiment, and a certain current device is connected in series on the power circuit of the LED module (10). 20)), the constant current device (2〇,) still includes a plurality of resistors R1 to RN connected in series with each other, and two ends of each of the resistors R1 to rN respectively constitute a contact point S1 to SN, in this embodiment, The equal-point contacts S1 to SN are respectively composed of a switch, and the on-off of the switch contacts determines whether or not the corresponding connected resistors R1 to RN are cut into the loop as a current limiting current. The specific structure of the example, as its working principle is as follows: As mentioned above, the LEDs have different VF values due to factors such as different wafers or different process conditions. Even if the VF value of a single light-emitting diode is small, as described above, the current application mode of the light-emitting diode is to generate a sufficient amount of light to form a module in a plurality of modules. Also in parallel mode In the case of electricity, the VF value is reduced to a large amount, and the change in the total current is very significant. Therefore, the present invention utilizes the adjustable design of the above-mentioned current blocking resistor, and can determine the total current limiting resistance cut according to the actual measured VF value of the product, thereby adjusting the total current within a fixed range to achieve a constant current. The implementation of the foregoing technology has a low threshold, which is not only low in cost, but also simple and practical, and effectively solves the problems encountered in the problem of constant current of the diode module product. M320818 [Simplified description of the drawings] Fig. 1 is a circuit diagram of a preferred embodiment of the present invention. The first figure is a circuit diagram of still another preferred embodiment of the present invention. The first picture is a schematic diagram of a circuit of a conventional light-emitting diode module. The fourth picture is a block diagram of the constant current circuit of the conventional LED module. [Main component symbol description] (1〇) LED module (20) (20') constant current device (70) LED Body module (81) current detecting circuit (82) current control circuit