TWM346124U - LED driving circuit - Google Patents

LED driving circuit Download PDF

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Publication number
TWM346124U
TWM346124U TW97213247U TW97213247U TWM346124U TW M346124 U TWM346124 U TW M346124U TW 97213247 U TW97213247 U TW 97213247U TW 97213247 U TW97213247 U TW 97213247U TW M346124 U TWM346124 U TW M346124U
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Taiwan
Prior art keywords
light
circuit
driving circuit
emitting diode
current limiting
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Application number
TW97213247U
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Chinese (zh)
Inventor
Sheng-Yi Zhuang
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Sheng-Yi Zhuang
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Priority to TW97213247U priority Critical patent/TWM346124U/en
Publication of TWM346124U publication Critical patent/TWM346124U/en

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Description

M346124 八、新型說明: 【新型所屬之技術領域】M346124 Eight, new description: [New technology field]

在室内,境中在不關場合會I設不同的燈具,例如辦公場合會In the indoors, there are different lamps in the environment, such as office occasions.

裝設=度較高且色溫較高的日絲,讀人們可在明亮的環境工; 丨笑娜个六疋,電,且同樣的 發光二極體燈泡的壽命較長,因此 目别有許讀商大力發展發光二極贿泡制在各翻途以替代習用 的燈泡,發光二極體燈泡_途如手電筒、交通燈號、汽機車燈呈等 專;然而,-般家居環境中仍大量制燈泡與日絲,發光球 體燈泡未普及於家居照明的除了使用習慣仍需漸漸改變以外,另 原因即在於發光二極體燈泡的色溫與輝度_高,亦即發光二極體 燈泡的顏色與亮度在人眼_覺巾較為織,無法讓人放鬆,不適宜 家=活,經過測試後發現其中原因之—即為發光二極體燈泡係由定 電流模式驅動,而習知技術係透過脈寬調變電路(pwM)愈轉換器 (CONVERTER)達到類似切換式電源的調變方式來調整發光二極體 的免度’但-般使麟居家魏或者直接流㈣知燈具的燈泡益法使 用上述之電職紐光二極贿泡的亮度,且成本過高;而為將發光 7極體燈泡顧於亮度較暗的燈具時,f知結構係姻多層燈罩包覆 該發光二極體,如中華民國專利證書第M329737號「LED燈泡結 構」或中華民國專利證書第M279025號「LED紐構造」,或者: 發光二極體及鮮之縣概使發光二極_紐舰或衰減至較低 的輝度,但如此就造成製造成本驗費與生產時驗長的問題 改進。 、 【新型内容】 5 M346124 有鑑於白知技術中將發光二極體應用於一般照明中有前述之缺 失,本新狀目_在於祕-體削、且成本蚊電賴_發光二、 極體燈泡,且該無發光二鋪魏可實施於不關樣之燈呈 中。 '、 本新型為-種發光二極體驅動電路,應用於利用發光二極體提供 光線的照明設備中,該驅動電路係提供一直流電力至一發光二極齡 其發亮,其巾趣動電路包括—餅婦魏、-整麵路以及 =限流迴路;其中該壓降赃迴路係調節其阻抗值而提供—極性與 助反之反電勢’令該輸人電力通壓賴整迴路後將盘 目抵咖降壓’再經過該壓降調整迴路後通過該整流迴路= —為直4力,魏波與紐迴路取縣錢電力,並具有 濾波70件吸收或釋放電壓以達到滤波效果,且 ===,以提供電壓與電流穩定之直流電= 令哕驅動電路、商用可透過較少的電子元件提供降屢的功效,可 P亥驅動電路_於各鮮同輸人之龍,並在 2時可令發光二極贿㈣雜歡級,再 可適用之場合與燈具範圍更大,更具有推廣發光二Ξ體照 【實施方式】 請參閱圖1,該圖所示為本新型之電路架構 二其 以及-舰與限流迴路3,該壓_整迴路i =迴路2 -極性與該輸人·減之反電勢,使該輸 ^、阻域而提供 路!後降塵,該輪人電力力____ 降調整迴 迴路2調變為該直流電力,該據波與限流迴路3則 波效果’且更包含至少一限流電阻32(示於圖 6 M346124 電/机值’以提供電壓與電流穩定之直流電力點亮該發光二極體4;藉 由^述之電路,透過該壓降調整迴路1將該輸入電力降壓可調低傳送 至該發光二極體4的直流電力電壓,以較低之電壓驅動該發光二極體 4、、而透過_波與限流迴路3達到穩定電流與電壓之效果,可令該 發光二極體4產生較低之輝度’使該發光二極體4可_於不同之照 明應用。 上述之電路架構之實施態樣請參閱圖2,其中該壓降調整迴路1 至少包含一降壓電容u與一放電電阻12,該降壓電容u與該放電電 阻12相互並聯,該降壓電容n將產生與該輸入電力極性相反之反電 勢而:亥反電勢可由之公式得到,而其中電流i 之大小爻该放電電阻12所影響,因此該降壓電容n與該放電電阻12 之大何決定該反電勢的大小,因此可依照備的用途來設計該反 2勢的大小而改變該發光二極體4之亮度,該整流迴路2可為全橋整 流3路,該濾波與限流迴路3之濾波元件可為一濾波電容31,該濾波 電容31並聯於該發光二極體4兩端,而該限流電阻%與該發光二極 體^串聯,該整流迴路2產生之直流電力則通過該濾、波電容31與該 限流電阻32而提供穩定之電流與電壓供該發光二極體4工作;上述 之電路可如圖3所示,其中該整流迴路2可使用市面上已整合之積體 | t路晶片,社述之驅動電路與電路鋼制鋪設於—電路板5上,該 、 發光二極體4則串連於該電路板5上,如此則該驅動電路與該發光二 極體4則可適用於一般燈泡(如圖4所示),或者形成一具有複數發 光二極體之模組。 & 上述之驅動電路可令發光二極體提供以成本低、體積小的電路達 到調整發光二極體輝度的功效,與習知技術使用pwM調整之作法相 較,本新型具有成本低、體積小的優點,可普遍取代各種用途的習知 燈泡,並且上述電路中透過該壓降調整迴路丨調整輸入之電壓,可令 該驅動電路適用於各種不同輸入之電壓,其適用之範圍可到較高的 110V至240V,或者較低的5V至55v的低壓亦可適用,因此可連接 於各種不同的電力來源或模組;再者,上述濾波與限流迴路3中的濾 7 M346124 波7G件亦可為一二極體33 (如圖5所示),該二極體33並聯於該發 光二極體4兩端,透過該二極體33的穩壓而濾掉電力的波動,以達 到濾波之功效;另,上述該壓降調整迴路丨之放電電阻12為可變電 阻、熱敏驗或光敏電阻,該濾波與歸迴路3之濾波元件可组 電容。 ^ 一 雖然本新型已以較佳實施例揭露如上,然其並非用以限定本新 审^何翻此技藝者,在不麟本新型之料和細_所作之些 :=:飾,皆應涵蓋於本新型中’因此本新型之保護範圍:視; 附之申請專利範圍所界定者為準。 ㈣阁田視後 綜上所述,本新型較習知之電路增 ^性及進步性之__專利要件,Ϊ合新 准本件新型專利申請案,以勵創作,至感德便。 一貝局核 M346124 【圖式簡單說明】 圖1為本新型之電路架構方塊圖。 圖2為本新型之電路架構示意圖。 圖3為本新型之電路與發光二極體側視圖。 圖4為本新型之實施態樣圖。 圖5為本新型電路架構之另一示意圖。 【主要元件符號說明】 1 .......壓降調整迴路 11 .......降壓電容 12 .......放電電阻 2 .....••整流迴路 3 .......濾波與限流迴路 31 .......濾波電容 32 .......限流電阻 33 .......二極體 4 .......發光二極體 5 .......電路板The installation of the higher degree and higher color temperature of the Japanese silk, reading people can work in a bright environment; 丨笑娜一六疋, electricity, and the same light-emitting diode bulbs have a longer life, so the eyes are not allowed The readers have vigorously developed the light-emitting diodes to replace the conventional light bulbs in various ways. The light-emitting diode bulbs are like flashlights, traffic lights, and motorcycle lights. However, there are still a lot of home environments. Light bulbs and Japanese silk, luminous sphere bulbs are not popular in home lighting, in addition to the habits still need to be gradually changed, the other reason is that the color temperature and brightness of the LED bulbs are high, that is, the color of the LED bulb The brightness is in the human eye _ sensible towel is relatively woven, can not make people relax, not suitable for home = live, after testing, found the reason - that is, the light-emitting diode bulb is driven by the constant current mode, and the conventional technology is through the pulse The wide-tuning circuit (pwM) converter (CONVERTER) achieves a switching mode similar to the switching power supply to adjust the degree of freedom of the LED. But the general purpose of the bulb is to make the bulb or the direct flow (four) Use the above electric job The brightness of the light briquette is too high, and the cost is too high. When the light-emitting 7-pole bulb is taken care of the darker light fixture, the structure of the multilayered lampshade covers the light-emitting diode, such as the Republic of China patent certificate. M329737 "LED Bulb Structure" or Republic of China Patent Certificate No. M279025 "LED New Structure", or: Light-emitting diodes and Xianzhi County make the light-emitting diodes _ New Zealand ships or decay to lower brightness, but this is The problem of manufacturing cost inspection and production inspection is improved. [New content] 5 M346124 In view of the above-mentioned lack of the application of the light-emitting diode in general illumination in Baizhi technology, this new title _ lies in the secret-body cutting, and the cost of mosquito-electricity _ illuminating two, polar body The bulb, and the non-illuminated two-ply can be implemented in a lamp that is not related. ', the new type is a light-emitting diode driving circuit, which is applied to a lighting device that provides light by using a light-emitting diode, the driving circuit provides a constant current to a light-emitting diode, and its illumination is interesting. The circuit includes - a cake, a whole surface, and a current limiting circuit; wherein the pressure drop circuit adjusts its impedance value to provide - the polarity and the help of the opposite potential - so that the input power is applied to the circuit After the pressure drop adjustment loop, the rectification loop is passed through the rectification loop = - for the straight 4 force, Wei Bo and the New Circuit take the county money power, and have 70 pieces of absorption or release voltage to achieve the filtering effect. And ===, to provide voltage and current stable DC = 哕 drive circuit, commercial can provide less power through fewer electronic components, can be P Hai drive circuit _ in each of the same as the dragon, and in 2 At the same time, it can make the light-emitting two-pole bribe (four) miscellaneous, and the applicable occasions and lamps are larger, and the promotion of the light-emitting diodes. [Implementation] Please refer to Figure 1, which shows the circuit structure of the new type. Second and its - ship and current limit 3, the press-_ i = integer loop circuit 2 - the polarity of the back EMF of the input-reduced, so that the input ^ barrier region providing passage! After the dust is reduced, the wheel electric power ____ is adjusted back to the loop 2 to be converted into the DC power, and the wave and the current limiting circuit 3 have a wave effect 'and further includes at least one current limiting resistor 32 (shown in Figure 6 M346124 /the value 'to illuminate the light-emitting diode 4 with a DC power that provides voltage and current stability; through the circuit described, the input voltage is stepped down to the light-emitting two through the voltage drop adjustment loop 1 The direct current power voltage of the polar body 4 drives the light emitting diode 4 at a lower voltage, and the effect of stabilizing the current and voltage through the wave and the current limiting circuit 3 can make the light emitting diode 4 lower. The brightness of the light-emitting diode 4 can be used for different lighting applications. Please refer to FIG. 2 for the implementation of the above circuit structure, wherein the voltage drop adjusting circuit 1 includes at least one step-down capacitor u and a discharging resistor 12 The buck capacitor u and the discharge resistor 12 are connected in parallel with each other, and the buck capacitor n will generate a back potential opposite to the polarity of the input power: the back counter potential can be obtained by the formula, wherein the magnitude of the current i is the discharge resistor 12 affected, so the buck capacitor n and The size of the discharge resistor 12 determines the magnitude of the back EMF. Therefore, the magnitude of the inverse 2 potential can be designed according to the intended use to change the brightness of the LED 2, and the rectifier circuit 2 can be a full bridge rectifier 3 channel. The filter component of the filter and the current limiting circuit 3 can be a filter capacitor 31. The filter capacitor 31 is connected in parallel to the two ends of the LED body 4. The current limiting resistor is connected in series with the LED body. 2 The generated DC power is supplied through the filter, wave capacitor 31 and the current limiting resistor 32 to provide a stable current and voltage for the LED 2 to operate; the above circuit can be as shown in FIG. 3, wherein the rectifier circuit 2 The integrated circuit body of the market can be used, and the driving circuit and the circuit steel of the company are laid on the circuit board 5, and the light emitting diode 4 is connected in series to the circuit board 5, so The driving circuit and the LED 4 can be applied to a general bulb (as shown in FIG. 4) or a module having a plurality of LEDs. The above driving circuit can provide the LED. Adjust with low cost, small size circuits Compared with the conventional technique of using the pwM adjustment method, the novel has the advantages of low cost and small volume, and can generally replace the conventional bulb for various purposes, and the voltage drop adjustment loop is adopted in the above circuit.丨Adjusting the input voltage allows the driver circuit to be applied to a variety of different input voltages. It can be used up to a high 110V to 240V, or a low 5V to 55V low voltage, so it can be connected to various Different power sources or modules; further, the filtering and current limiting circuit 3 in the filter 7 M346124 wave 7G device can also be a diode 33 (shown in Figure 5), the diode 33 is connected in parallel Both ends of the light-emitting diode 4 filter the fluctuation of the power through the voltage regulation of the diode 33 to achieve the filtering effect; in addition, the discharge resistor 12 of the voltage drop adjustment circuit is a variable resistor and a heat sensitive For the test or the photoresistor, the filter element of the filter and return loop 3 can form a capacitor. ^ Although the present invention has been disclosed above in the preferred embodiment, it is not intended to limit the new trials and the techniques of the art, and it is not limited to the new materials and details: =: Included in this new type 'The scope of protection of this new type: see; as defined in the scope of the patent application. (4) After the Vision of the Court, in summary, the new type of patents that are more conventional and more advanced than the conventional ones, and the new patent application for the new standard, encourage the creation, to the sense of virtue. One Bay Bureau Core M346124 [Simplified Schematic] Figure 1 is a block diagram of the circuit structure of the new type. 2 is a schematic diagram of a circuit structure of the present invention. Figure 3 is a side view of the circuit and light emitting diode of the present invention. Fig. 4 is a view showing an embodiment of the present invention. Figure 5 is another schematic diagram of the circuit architecture of the present invention. [Description of main component symbols] 1 .......voltage drop adjustment circuit 11 .... buck capacitor 12 .... discharge resistor 2 .....•• rectifier circuit 3 .......Filtering and current limiting circuit 31 .... Filtering capacitor 32 .... Current limiting resistor 33 .... diode 4 ..... ..Lighting diode 5 .... circuit board

Claims (1)

M346124 九、申請專利範圍: 1·一種發光二極體驅動電路,應 中,該驅動電路係將一輸入;」:發光一極體提供光線的照明設備 其發亮,其中該驅動電路包括:餐為一直流電力送至一發光二極體令 之反電勢降11、路係彻其阻抗值而提供-極性與該輸人電壓減 調變力該輸入電力經過該塵降調整迴路後通過該整流迴路而 、-滤I、限流迴路’取得該直流電力,並具有至少—舰元件吸收 或釋放電麼以達到據波效果,且更包含至少一限流電阻限制該直流電力 之電流值提供電壓與紐穩定之直流電力點亮該發光二極體。 2·如申請專職邮1酬述之發光二極體驅動電路,其巾顧降調整迴 路至少包含-降壓電容與-放電電阻,其中該降壓電容與該放電電阻相 互並聯。 3·如申明專利把圍第2項所述之發光二極體驅動電路,其中該放電電阻為 可變電阻、熱敏電阻或光敏電阻。 4·如申請專利範圍第1項所述之發光二極體驅動電路,其中該濾波與限流 迴路之濾波元件為一濾波電容,該濾波電容並聯於該發光二極體兩端, 而該限流電阻與該發光二極體串聯。 5·如申請專利範圍第4項所述之發光二極體驅動電路,其中該濾波與限流 迴路之濾波元件為一钽電容。 6.如申請專利範圍第1項所述之發光二極體驅動電路,其中該濾波與限流 迴路之濾波元件為一二極體,該二極體並聯於該發光二極體兩端,而該 限流電阻與該發光二極體串聯。M346124 IX. Patent application scope: 1. A light-emitting diode driving circuit, wherein the driving circuit is an input;": a lighting device that emits light by a light-emitting body, wherein the driving circuit comprises: a meal For the constant current power to be sent to a light-emitting diode, the back EMF drop is 11. The path is provided with the impedance value. The polarity and the input voltage are reduced. The input power passes through the dust fall adjustment loop and passes through the rectification. The circuit, the filter I, the current limiting circuit 'obtain the DC power, and have at least - the ship component absorbs or releases electricity to achieve the wave effect, and further includes at least one current limiting resistor to limit the current value of the DC power to provide a voltage The light-emitting diode is illuminated with DC power of New Stable. 2. If the light-emitting diode driving circuit of the full-time postal reward is applied, the towel-reducing adjustment circuit includes at least a -blow capacitor and a discharge resistor, wherein the step-down capacitor and the discharge resistor are in parallel with each other. 3. The illuminating diode driving circuit according to claim 2, wherein the discharging resistor is a variable resistor, a thermistor or a photoresistor. 4. The illuminating diode driving circuit of claim 1, wherein the filtering component of the filtering and current limiting circuit is a filter capacitor, and the filter capacitor is connected in parallel to the two ends of the illuminating diode. A current resistor is connected in series with the light emitting diode. 5. The LED driving circuit of claim 4, wherein the filtering component of the filtering and current limiting circuit is a tantalum capacitor. 6. The LED driving circuit of claim 1, wherein the filtering component of the filtering and current limiting circuit is a diode, and the diode is connected in parallel to the two ends of the LED. The current limiting resistor is connected in series with the light emitting diode.
TW97213247U 2008-07-25 2008-07-25 LED driving circuit TWM346124U (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI415517B (en) * 2010-04-14 2013-11-11 Ultrachip Inc Light emitted diode driving circuit

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI415517B (en) * 2010-04-14 2013-11-11 Ultrachip Inc Light emitted diode driving circuit

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