201004473 九、發明說明： 【發明所屬之技術領域】 本發明係涉及一種LED之節能驅動裝置，尤指一種可抑 制LED產生高溫過熱之驅動控制裝置。 【先前技術】 按，由於LED技術不斷的進步，促使LED產品亮度持 續昇鬲，由早期之指示燈功能，進展至具有省電、環保、壽命 長體積小之照明及光源產品，應用範圍涵蓋一般照明、車用 照明、路燈照明及背光板等，市場規模及成長力相當可觀，可 說是全世界未來積極推動的產業，然而由於高功率Led輸入 功率僅有15〜20%轉換成光，其餘8〇〜85%則轉換成熱；若 廷些熱能未能有效加以處理，適時排出至外界，將會使led 晶粒界面溫度過高，而影響其波長，甚至導致發光效率衰減、 壽命降低等問題，故其系統所衍生熱的問題，將是影響產品功 能優劣關鍵；所以習用在處理散熱技術問題時，—般均從led 内部封裝熱傳導及⑥具散熱設計等兩大項目纟進行，因此對封 裝製程成本控制、體積與重量之限制，均產生極大之影響，甚 至造成困擾；故目前市面上很少看到高功率數的LED燈具， 而不是用金屬外殼做為散熱裝置的產品。 次按，LED在長時間被驅動點亮後，易生高熱而影響其 光度（流明），而早期驅動led點亮之方式，係直接輸入DC 電源，而LED受激時可對外發出可見光，LED主要係以砷磷 化鎵（GaAsP)或磷化鎵（GaP)所製成，當製作材料不同時， 其放射光的綠也不同，顏色自然不同，例如GaAsP發射的 201004473 為紅色光，而GaP則在黃色與綠色之間，❿㈣所發射的光 度和導通電流是成正比關係，如第一圖A所示。因此其光度（流 明）的調整，則是配合輸入較低（L)或較高（H)的沉電流 ⑴來控制’如第-圖B所示。但此種驅動方式均是長時間 對LED導通點亮’故易在短時間内產生高溫，若無良好散熱 裝置，易導致LED光度衰減，降低其可靠度。 而第二圖A、B所示，係習知常用以驅動LED之pwM (Pulse Width Modulation )電路，其主要功能是將第二圖A所 示之輸入電壓的振幅轉換成第二圖B所示具有寬度—定的脈 衝，亦即係將振幅資料轉換成脈衝寬度，除了可以監控功率電 路的輸出狀態外，同時還提供功率元件控制信號，廣泛應用於 高功率轉換效能電路。惟查，此種PWM電路之_波形、振 幅電壓為一定的型式，例如其設定驅動LED之振幅電壓為 5V，則其波形及振幅將依此設定值來提供操作電壓及電流，這 也是為什麼LED的工作溫度無法降低的因素之一。 j以，目前LED在照明使用上尚未能普遍，究其原因仍 在於靠LED封裝綠_效轉限’因為所錢作電壓及電流 不變下，其勢必形成高溫，所卩再如何靠封裝來散#，總是難 達到預期功效。此外，在燈具上增設很多諸如散熱則等之散 熱裝置，不僅會增加體積而不利於室内空間裝設外，更重要的 疋，燈具表面還是處於高溫狀態、，例如：一使用led為光源之 枱燈，其殼面會很燙，而其周圍也會變得很熱，不僅影響到消 費者的使用’域制了燈具必須使用金屬外殼，㈣難财高溫 而易變形，甚至燒毁之危險性；故，在整體上尚有改善空間。 -6 - 201004473 【發明内容】 緣是，本發明主要目的，係在提供—錄心 ^ 種抑制LED散熱溫201004473 IX. Description of the Invention: [Technical Field] The present invention relates to an energy-saving driving device for an LED, and more particularly to a driving control device capable of suppressing high-temperature overheating of an LED. [Prior Art] Press, due to the continuous advancement of LED technology, the brightness of LED products continues to rise, from the early indicator function to the lighting and light source products with power saving, environmental protection, long life and small size, the application range covers general Lighting, automotive lighting, street lighting and backlighting, etc., the market size and growth potential is considerable, can be said that the world is actively promoting the future, but because the high-power Led input power is only 15~20% converted into light, the rest 8〇~85% is converted into heat; if some heat energy is not effectively treated, it will be discharged to the outside world in a timely manner, which will cause the temperature of the LED grain interface to be too high, which will affect its wavelength, and even lead to attenuation of luminous efficiency and life. The problem, so the problem of heat generated by the system will be the key to affecting the function of the product; therefore, when dealing with the problem of heat dissipation technology, it is generally carried out from the two projects of LED internal package heat conduction and six heat dissipation designs. Packaging process cost control, volume and weight restrictions have a great impact, and even cause trouble; so there are currently few on the market See high-power LED luminaires instead of metal casings as heat sinks. After pressing for a long time, the LED is prone to high heat and affects its luminosity (lumen) after being driven for a long time. The early driving of the led lighting method is to directly input the DC power supply, and the LED can emit visible light when the LED is excited. It is mainly made of GaAs, GaAsP or GaP. When the materials are different, the green light is different, and the colors are naturally different. For example, GaAsP emits 201004473 as red light, while GaP Then between yellow and green, the luminosity and on-current emitted by ❿(4) are proportional, as shown in Figure A. Therefore, the adjustment of its luminosity (lumen) is controlled by the sinking current (1) with lower input (L) or higher (H) as shown in Fig. B. However, this type of driving method is to illuminate the LED for a long time, so it is easy to generate high temperature in a short time. If there is no good heat dissipation device, the LED luminosity is easily attenuated and the reliability is lowered. As shown in the second figure A and B, it is commonly used to drive the LED pwM (Pulse Width Modulation) circuit, the main function of which is to convert the amplitude of the input voltage shown in the second figure A into the second figure B. Having a width-fixed pulse, that is, converting amplitude data into a pulse width, in addition to monitoring the output state of the power circuit, it also provides power component control signals, which are widely used in high-power conversion performance circuits. However, it is checked that the waveform and amplitude voltage of the PWM circuit are of a certain type. For example, if the amplitude voltage of the LED is set to 5V, the waveform and amplitude will provide the operating voltage and current according to the set value, which is why LED One of the factors that the working temperature cannot be lowered. j, the current LED is not universal in lighting use, the reason is still relying on the LED package green _ effect limit] because the money for the voltage and current unchanged, it is bound to form a high temperature, how to rely on packaging It’s always difficult to achieve the desired effect. In addition, a lot of heat-dissipating devices such as heat dissipation are added to the luminaire, which not only increases the volume but also facilitates the installation of the indoor space. More importantly, the surface of the luminaire is still in a high temperature state, for example, a table lamp using LED as a light source. The surface of the shell will be very hot, and the surrounding area will become very hot, which not only affects the use of consumers. 'The domain must be made of metal casings, (4) It is difficult to be high-temperature, easy to deform, or even burned; Therefore, there is still room for improvement on the whole. -6 - 201004473 [Summary content] The main purpose of the present invention is to provide a recording-recording type to suppress the heat dissipation temperature of the LED
度之節能驅動裝置’其具有在信號電壓轉換工作能量裝置控制 下，藉由負載端取得回授信號電壓，經微積分處』器;斷二做 信號電壓比對，來修正電壓及電流的調制動作，使其可依[ED 胃相㈣°高亮度高 功率之LED，不僅具有節能效益，且又無溫度過熱的問題，可 達安全環保之功效増進。 為達上述目的，本發明之技術手段包含： 一直流電源，其係用以供應一 LED負載端所需之電源； 一間歇振盪器（Pulse OSC)，其係用以將該直流電源所輸 入之電流產生一脈衝（Pulse)信號電壓（VI); —前置放大器，係連接在該間歇振盪器之輸出端，用以將 該脈衝信號電壓（VI)加以放大，得一放大信號電壓（V2); 一載波信號調制單元，其包括一微積分處理器，一信號比 對電路係與該微積分處理器連接，及至少三個信號處理器，係 與該信號比對電路連接，且每一信號處理器各自連接一信號差 量放大器，其用以將該放大信號電壓（V2)至少做三次以上之 L就電壓比對處理’並輸出一比對信號電厘（V3); 一電壓電流調制單元，其包括以一信號轉換器將該比對信 號電壓（V3)變頻，再分別以一 DC電壓處理器與定電壓電路， 及一 DC電流處理器與定電流電路處理後，再以—功率放大 器，把所比對處理後之定電壓（V4)與定電流（14)予以放大 再送至該LED負載端；以及 201004473 一回授信號電路，係連接在該LED負載端與該微, 理器之間’其由該led負載端取-負載信號電壓（V5)=4 授後得一比對信號電壓（V6)至該微積分處理器之輪人^回 整理後，以該信號處理器至少三次以上之軟體程序調制端，鉍 並以該信號差量放大器，把衰減之信號電壓予以自動調=作， 放大’並分别連接至該DC電壓處理器及該DC電流處理補仏 使該功率放大器輸出-新的工作電壓信㉟（V4n)，來重=器’ 該LED負載端，藉由此修正之工作電壓信號的钢制動作驅動The energy-saving driving device of the degree is controlled by the signal voltage conversion working energy device, and the feedback signal voltage is obtained by the load terminal, and the signal is compared by the calculus to correct the voltage and current modulation action. It can be used according to [ED gastric phase (four) ° high brightness and high power LED, not only has energy-saving benefits, but also no temperature overheating problems, can achieve safety and environmental protection effects. To achieve the above objective, the technical means of the present invention comprises: a DC power supply for supplying a power supply required for an LED load terminal; and an intermittent oscillator (Pulse OSC) for inputting the DC power supply The current generates a pulse signal voltage (VI); a preamplifier is connected to the output of the intermittent oscillator for amplifying the pulse signal voltage (VI) to obtain an amplified signal voltage (V2) a carrier signal modulation unit comprising a calculus processor, a signal comparison circuit coupled to the calculus processor, and at least three signal processors coupled to the signal comparison circuit, and each signal processor Each of which is connected to a signal difference amplifier for performing at least three times of the amplified signal voltage (V2) for voltage comparison processing and outputting a comparison signal (V3); a voltage current modulation unit, The frequency conversion (V3) is converted by a signal converter, and then processed by a DC voltage processor and a constant voltage circuit, and a DC current processor and a constant current circuit, respectively. a power amplifier that amplifies the fixed voltage (V4) and constant current (14) after the comparison and sends it to the LED load terminal; and a feedback signal circuit of 201004473 is connected to the LED load terminal and the micro, Between the processor, it is taken by the led load terminal - the load signal voltage (V5) = 4 is given a comparison signal voltage (V6) to the wheel of the calculus processor, and the signal processor is used. At least three or more software program modulation ends, and the signal difference amplifier is used to automatically adjust the attenuation signal voltage to be amplified and connected to the DC voltage processor and the DC current processing complement to make the power Amplifier output - the new working voltage letter 35 (V4n), to the weight = the 'the LED load terminal, driven by the steel action of the corrected operating voltage signal
該LED負載端能以低電壓及低電流來驅動，據以抑 使 溫度者。 ^政熱 【實施方式】 首先’請參閱第三圖所示’其揭示本發明之節能驅 的結構圖，其包含有： I置 一直流電源（10) ’其係用以供應一 led負栽端（4 需之電源； 0)所 一間歇振盪器（Pulse OSC) ( 11)，其係用以將該直、、充 源（10)所輸入之電流產生一脈衝（pulse)信號電髮 電 一前置放大器（12)，係連接在該間歇振盪器n 1)， 出端，用以將該脈衝信號電壓（VI)加以放大，得一放 ^ J 電壓（V2); 大仏說 一載波彳^號調制單元（20)’其包括一微積分處理琴（2 一信號比對電路（22)係與該微積分處理器（21)連接，1：>’ 少三個信號處理器（23)、（24)、（25)，係與該信號fc|_虹及至 (22)連接，且每一信號處理器（23〜25)各自連接— 號罢 1放大器（231)、（241)、（251)’其用以將該放大信號電墨（ ^ ) 201004473 至少做二次以上之仏號電壓比對處理，並輸出一比對信號電壓 (V3); -電壓電流調制單元（3〇)，其包括以一信號轉換器（31) 將該比對信號電壓（V3)變頻，再分別以—DC電壓處理器（32) 與定電壓電路（33 )’及一DC電流處理器（34)與定電流電 路（35)處理後，再以一功率放大器（36)，把所比對處理後 之定電壓（V4)與疋電流（14)予以放大再送至該led負載 端（40);以及The LED load terminal can be driven with low voltage and low current, so as to suppress the temperature. ^政热[Embodiment] First, please refer to the third figure, which discloses a structural diagram of the energy-saving drive of the present invention, which includes: I-connected power supply (10) 'It is used to supply a led load The terminal (4 required power supply; 0) is a intermittent oscillator (Pulse OSC) (11), which is used to generate a pulse signal for the current input from the direct source and the charge source (10). The preamplifier (12) is connected to the intermittent oscillator n 1), and the output terminal is used for amplifying the pulse signal voltage (VI) to obtain a voltage (V2); The modulating unit (20)' includes a calculus processing piano (2 a signal matching circuit (22) is connected to the calculus processor (21), 1:> less three signal processors (23), ( 24), (25), connected to the signals fc|_ rainbow and to (22), and each of the signal processors (23 to 25) is connected to each other - the amplifiers (231), (241), (251) 'It is used to process the amplified signal ink ( ^ ) 201004473 at least twice the nickname voltage, and output a comparison signal voltage (V3); a voltage-current modulating unit (3〇), comprising: converting the comparison signal voltage (V3) by a signal converter (31), and respectively using a -DC voltage processor (32) and a constant voltage circuit (33) And processing a DC current processor (34) and a constant current circuit (35), and then amplifying and supplying the constant voltage (V4) and the 疋 current (14) after the comparison processing to a power amplifier (36) The led load end (40);
一回授sh電路（5〇)，係連接在該led負載端（4〇)與 該微積分處理器（31)之間，其由該LED負載4〇) 一 負載信號電壓（叫，經回授後得—比對信號電壓（v6)至該 微積分處理器⑵）之輪人端’經整理後，以該信號處理器⑺ 〜⑸至^ —X上讀體料調制動作，並料信號差量放 大器（Mi)a1)’把衰減之信號電壓予以自動調節 補償放大=，至該DC電壓處理器（32)及該DC電 流處理 該功率放大器（36)輸出一新的工作電壓 壓及低電流來轉’據財卩財散熱溫度者。G 請續配合第四圖所示，其揭示本發明 冗型悲，其周邊為使用該驅動裝置（6G) 不賛述。而該_負载端(40)包括可為、二： 杯燈()或第五心所示之-心二所二 五圖c所示之led燈管（術）。由於本發明之驅U路成品 -9- 201004473 僅約（1.5Xl.5xl.O) cm左右的大小，故可輕易地裝設在上揭 LED照明的内部。 请同時配合第三、六圖所示，其中第六圖上方之方波圖係 一般PWM圖形，例如其電壓振幅出迚為5v，L〇w為〇v， 頻率，1kHz之方波。而下圖為本發明利用第三圖之載波信號 調制單元（20)及電壓電流調制單元（3〇)，在pwM 一定脈 衝寬度波上’藉由在LED負载端（4〇)經回授取得比對信號 電壓（V6)’經微積分處理器（21)不斷的做信號電壓比對， 絰至J二次以上之軟體調制動作，控制振盪波形、振幅電壓及 波形的直線性，使其載波機如第六@下方之不規則性斜錯齒 狀’如將其放大壯第七圖A、b^，其中第七圖A所形成 之載波調變’係輸人-振幅電壓約18v，然後經過①次、② -人③夂、④次....等多次信號比對及軟體程調制動作， 並以h號差量放大器（231)、（241)、（251)，把衰減之信號電 壓予以自動調節補償放大，使功率放A||(36)輸出—新的工 作電壓信號（V4n)’來修正電屋及電流。亦即本發明之驅動裝 置可因應LED之產品的負载特性，來調制負載端之電壓、 電流阻抗匹配，讓祕最小’料最佳之省電競輸出，第七 圖A火色區域之（fi)及（β)即為所節省之電壓及電流，而 第七圖Β則疋因電流;j;同時所形成振幅改變，亦即控制電流輸 入增減，可改變波形及振幅。 是以，本發明應用不斷的調制動作，而得以在低電壓及低 電流狀態下’即可達驅動高亮度高功率之LED，不僅具有節能 效益，且餘_'村解決，同軟可達卿保及安全之功效 增進。 -10- 201004473 藉助上揭技術手段’ IU林發明之驅動裝置應用於LED 與習用驅動裝置作一實際測試後之比較表： 習用驅動裝置 本發明驅動裝置 樣品別 1W 3W 1W 3W 工作電壓（DCV) 12 12 3〜12 3〜12 工作電流（DCA) 〇. 19 〜〇. 20 0.24〜0. 25 0.16 0.18 距離（m) 1 1 1 1 溫度（°C) 55 〜58 65 〜67 39 〜40 52 〜53 亮度（Lux) 270〜280 320〜330 340〜350 390〜400 消耗功率（W) 2.28 〜2.40 2.88-3.00 1. 92 2. 16 備註 有二次光學 附表說明： ① 習用驅動裝置樣品為市售之產品。 ② 本比較表為樣品比對數據，如廠商樣品不同時比較數據 會有所差別。 由上表比較得知’本發明藉由在LED負載端經回授取得比 對信號電壓（V6)，經微積分處理器（21)不斷的做信號電麼 比對，經至少三次以上之軟體調制動作，並以信號差量放大 器，把衰減之信號電壓予以自動調節補償放大，以新的工作電 壓信號來修正電壓及電流，而得以在0. 16(DCA)及0. 18(Da) 低電流狀態下來驅動LED，使其溫度分別保持在39〜4(TC及 52〜53°C，而不致於形成高溫，且LED亮度（Lux)亦相對增 加，而消耗功效（W)則降低。 201004473 是以’本發明可在低電壓及低電流狀態下，即可達到驅動 局亮度高功率之LED，不僅具有節能效益，且又無溫度過熱的 問題’藉此’本發明適用於第五圖A、b、c所示之LED杯趣 (40A)、LED燈泡（40B)及LED燈管（40C)的内部，且因其 散熱問題得以克服，所以上揭LED產品，勿須在外部增設散熱 裝置，所以它的體積就可以維持原有的，如此一來，即可與舊 有燈具相容使用，而勿須整組更換確具方便性及實用性。 綜上所述，本發明所揭示之技術手段，確具「新穎性」、「進 步性」及「可供產業利用」等發明專利要件，祈請鈞局惠賜 專利’以勵發明’無任德感。 惟，上述所揭露之圖式、說明，僅為本發明之較佳實施例， 大凡熟悉此項技藝人士，依本案精神範疇所作之修飾或等效變 化’仍應包括本案申請專利範圍内。 -12- 201004473 【圖式簡單說明】 第一圖A係習用LED之電流與流明強度之關係圖。 第一圖B係習用LED之電流與時間關係圖。 第二圖A係習用電壓振幅示意圖。 第二圖B係習用驅動LED之PWM振幅示意圖。 第三圖係本發明之結構示意圖。 第四圖係本發明使用於LED負載之電路圖。 第五圖A係本發明驅動裝置使用於LED杯燈之參考圖。 第五圖B係本發明驅動裝置使用於LED燈泡之參考圖。 第五圖C係本發明驅動裝置使用於LED燈管之參考圖。 第六圖係本發明相對於習用振幅之示意圖。 第七圖A、B係第六圖之載波調變振幅放大圖。 【主要元件符號說明】 (10) 直流電源 (11) 間歇振盪器 (12) 前置放大器 (20) 載波信號調制單元 (21) 微積分處理器 (22) 信號比對電路 (23) 、（24)、（25)信號處理器 (231)、（241)、（251)信號差量放器 (30) 電壓電流調制單元 (31) 信號轉換器 (32) DC電壓處理器 (33) 定電壓電路 -13- 201004473 (34) DC電流處理器 (35) 定電流電路 (36) 功率放大器 (40) LED負載端 (40A)杯燈 (40B)燈泡 (40C)燈管 (50)回授信號電路 (60)驅動裝置A feedback sh circuit (5〇) is connected between the led load terminal (4〇) and the calculus processor (31), and the LED load is 4〇) a load signal voltage (called, feedback) After the comparison - comparing the signal voltage (v6) to the wheel of the calculus processor (2), after finishing, the signal processor (7) ~ (5) to ^ - X read the bulk material modulation action, and the signal difference Amplifier (Mi) a1) 'automatically adjusts the attenuated signal voltage to compensate for amplification =, to the DC voltage processor (32) and the DC current processing the power amplifier (36) outputs a new operating voltage and low current Turned to 'according to the financial heat dissipation temperature. G Please continue to cooperate with the fourth figure, which reveals the redundancy of the present invention, and the periphery thereof is not praised for using the driving device (6G). The _ load end (40) includes a led lamp tube (process) as shown in the c-light () or the fifth heart. Since the finished product of the invention, the -9-201004473 is only about (1.5Xl.5xl.O) cm or so, it can be easily installed inside the LED illumination. Please also cooperate with the third and sixth figures. The square wave diagram above the sixth picture is a general PWM pattern, for example, its voltage amplitude is 5v, L〇w is 〇v, frequency, square wave of 1kHz. The following figure shows the carrier signal modulating unit (20) and the voltage-current modulating unit (3 〇) of the present invention, which are obtained by the feedback on the LED load end (4 〇) on the pwM certain pulse width wave. The comparison signal voltage (V6)' is continuously compared with the signal voltage by the calculus processor (21), and the software modulation action of the second or more times is controlled, and the linearity of the oscillation waveform, the amplitude voltage and the waveform is controlled to make the carrier machine For example, the irregularity of the sixth @lower slanting tooth is as shown in the seventh figure A, b^, wherein the carrier modulation formed by the seventh figure A is the input-amplitude voltage of about 18v, and then 1 time, 2 - person 3 夂, 4 times .... and so on multiple signal comparison and software path modulation action, and the attenuation signal is carried out by the differential amplifiers (231), (241), (251) The voltage is automatically adjusted to compensate for amplification, so that the power amplifier A||(36) outputs a new operating voltage signal (V4n)' to correct the electricity house and current. That is to say, the driving device of the invention can modulate the voltage and current impedance matching of the load end according to the load characteristic of the LED product, so that the secret is the best energy-saving output of the material, and the seventh part A fire area (fi) And (β) is the saved voltage and current, and the seventh figure is the current; j; at the same time the amplitude change, that is, the control current input increases and decreases, the waveform and amplitude can be changed. Therefore, the present invention applies the continuous modulation action, and can drive the high-brightness and high-power LED under the low voltage and low current state, which not only has the energy-saving effect, but also the rest of the village. The effect of ensuring safety is enhanced. -10- 201004473 With the help of the above-mentioned technical means ' IU Lin invention drive device is applied to LED and conventional drive device for a practical test comparison table: conventional drive device of the present invention drive device sample 1W 3W 1W 3W working voltage (DCV) 12 12 3~12 3~12 Operating current (DCA) 〇. 19 〇. 20 0.24~0. 25 0.16 0.18 Distance (m) 1 1 1 1 Temperature (°C) 55 ～58 65 ～67 39 ～40 52 ~53 Brightness (Lux) 270~280 320~330 340~350 390~400 Power consumption (W) 2.28 ~2.40 2.88-3.00 1. 92 2. 16 Remarks There are secondary optical schedule instructions: 1 The sample of the conventional drive is Commercially available products. 2 This comparison table is the sample comparison data. If the manufacturer's sample is different, the comparison data will be different. From the comparison of the above table, the present invention obtains the comparison signal voltage (V6) by feedback on the LED load end, and continuously performs signal comparison by the calculus processor (21), and at least three times of software modulation. Action, and with the signal difference amplifier, the attenuated signal voltage is automatically adjusted to compensate for the amplification, and the new working voltage signal is used to correct the voltage and current, and the low current is at 0.16 (DCA) and 0.18 (Da). In the state, the LED is driven to maintain the temperature at 39~4 (TC and 52~53 °C, respectively, without forming a high temperature, and the LED brightness (Lux) is relatively increased, and the power consumption (W) is decreased. 201004473 Yes According to the invention, the LED with high brightness and high power can be obtained under the conditions of low voltage and low current, which not only has the effect of energy saving, but also has no problem of overheating of temperature. The invention is applicable to the fifth figure A, b, c shows the inside of the LED cup fun (40A), LED bulb (40B) and LED tube (40C), and because of its heat dissipation problem, so the LED products are not required to add external heat sinks. So its volume can maintain its original In this way, it can be used compatible with the old lamps, and it is convenient and practical to not replace the entire group. In summary, the technical means disclosed by the present invention are "new" and "advanced". Inventive patents such as "sex" and "available for industrial use", and pray for the patent "to invent" without any sense of morality. However, the above-mentioned drawings and descriptions are only preferred embodiments of the present invention. For example, the modifications or equivalent changes made by those who are familiar with this skill in the spirit of the case should still include the scope of the patent application of this case. -12- 201004473 [Simple description of the diagram] The first figure A is the current of the conventional LED Diagram of lumen intensity. Figure B is a plot of current versus time for a conventional LED. Figure 2A is a schematic diagram of the amplitude of a conventional voltage. Figure 2B is a schematic diagram of the PWM amplitude of a conventionally driven LED. The fourth figure is a circuit diagram of the LED load used in the present invention. Fig. 5 is a reference diagram of the driving device of the present invention used for the LED cup lamp. Fig. 5B is a reference diagram of the driving device of the present invention used for the LED bulb Figure 5 is a reference diagram of the driving device of the present invention for use in an LED lamp. The sixth drawing is a schematic diagram of the present invention with respect to the conventional amplitude. The seventh figure A and B are the enlarged views of the amplitude modulation amplitude of the sixth figure. Main component symbol description] (10) DC power supply (11) Intermittent oscillator (12) Preamplifier (20) Carrier signal modulation unit (21) calculus processor (22) Signal comparison circuit (23), (24), (25) Signal Processor (231), (241), (251) Signal Difference Receiver (30) Voltage Current Modulation Unit (31) Signal Converter (32) DC Voltage Processor (33) Constant Voltage Circuit-13 - 201004473 (34) DC Current Processor (35) Constant Current Circuit (36) Power Amplifier (40) LED Load Terminal (40A) Cup Lamp (40B) Lamp (40C) Lamp (50) Feedback Signal Circuit (60) Drive unit