201138546 六、發明說明： 【發明所屬之技術領域】 本發明係與驅動器有關，特別是指一種可調式發光二 極體（LED)之驅動器。 【先前技術】 發光二極體初時多用作為指示燈、顯示板等；p遺著白光發 光二極體的出現’也被用作照明。發光二極體是—種新式光 • 源、，具有效率高、壽命長、不易破損等傳統光源無法與之錄 的優點，然而’當該發光二極體作輕明設備時，只能實現開 和關的狀態，而無法進行照明亮度的調整，藉以凸顯出"該發: 二極體作為照明設備時實用性不足之缺陷。 為此，-般的發光二極體電性連接有—調光單元（即交 流式調光器），藉由調光單元對該發光二極體的照明亮度進 行調整’然而，該調光單元僅適用於一般的燈泡，一但使用於 # 紐光二極體，光二_並不馳财的縣單元所控 制’只能實現開和關的狀態，因為該調光單元有最小維持電流 限制’在最小工作電流小於最小維持電流時，調光單元就會關 斷或重啟動’所以在輸出轉變小時（即發光二_照明亮度 變暗）的情形’就會出現閃燈或熄滅的不穩定異況，是以，在 調節過程中該發光二極體會出現_或熄滅等異常狀況，其除 了造成使騎眼睛獨之外，更會降低該發光二鋪的壽命。 疋以，如何開發出一種可調式發光二極體（LED)之驅 201138546 動器可解決上述之_，即為核翻的動機。 【發明内容】 本發明之目的在於提供一種可調式發光二極體（LED) 之驅動器，藉由該驅動器使得對該發光二極體進行昭明亮 度調整時’避免發生閃燈或熄滅等異常狀況，藉以防止使用者 眼睛的不適以及增加該發光二極體的壽命。 緣是，為了達成前述目的，依據本發明所提供之一種 可調式發光二極體（LED)之驅動器，適用電性連接該發光 一極體與父流電源之間，該發光二極體電性連接有一變壓 驅動單元，該交流電源電性連接有一調光單元與一變壓整 流單元，該驅動器包含有：一檢測單元，其電性連接該變 壓整流單元’用以檢測該交流電源是否經過該調光單元的 調整以及該調光單元的工作電流是否為最小工作電流，當 該乂流電源經過該調光早元的調整時’則輸出一驅動信 號’當該調光單元的工作電流為最小工作電流時，則輸出 一啟動信號，反之則輸出一關閉信號；一調節單元，其電 性連接該檢測單元，該調節單元接收到該驅動信號經運算 後輸出一調光信號，該調節單元接收到該啟動信號後輪出 一啟動控制信號，該調節單元接收到該關閉信號後輸出— 關閉啟動信號；一脈寬調變（PWM)信號調製單元，其電性迷 接該調節單元，該脈寬調變（PWM)信號調製單元接收到該調 光信號後連同該脈寬調變信號按照一定的比例進行混合調 201138546 製’而輸出一識別信號；一脈寬調變（PWM)控制單元，其電 性連接該脈寬調變（PWM)信號調製單元與該變壓驅動單元 之間’該脈寬調變（PWM)控制單元接收到該識別信號後，用 以限制該變壓驅動單元的輸出功率大小；一交流負載單 元，其電性連接該調節單元，該交流負載單元接收到該啟 動控制信號，則提供一電流給該調光單元，該交流負載單 元接收到該關閉控制信號，則停止提供電流給該調光單元。201138546 VI. Description of the Invention: [Technical Field of the Invention] The present invention relates to a driver, and more particularly to a driver of an adjustable light emitting diode (LED). [Prior Art] The light-emitting diode is often used as an indicator light, a display panel, etc. at the beginning; the appearance of a white light-emitting diode is also used as illumination. The light-emitting diode is a new type of light source, which has the advantages of high efficiency, long life, and not easy to break. The traditional light source can not be recorded. However, when the light-emitting diode is used as a light device, it can only be opened. And the state of the off, and the adjustment of the brightness of the illumination cannot be performed, thereby highlighting the fact that the hair is not practically useful as a lighting device. To this end, the general light-emitting diode is electrically connected with a dimming unit (ie, an AC dimmer), and the illumination brightness of the LED is adjusted by the dimming unit. However, the dimming unit It is only suitable for general light bulbs. Once used in #纽光二极管, the light-based _ is not controlled by the county unit. It can only be turned on and off because the dimming unit has a minimum holding current limit. When the minimum operating current is less than the minimum holding current, the dimming unit will be turned off or restarted. Therefore, when the output transition is small (ie, the illumination is dimmed, the illumination is dimmed), there will be an unstable situation of flashing or extinguishing. Therefore, during the adjustment process, the LED may exhibit an abnormal condition such as _ or extinction, which not only causes the riding of the eye to be exclusive, but also reduces the life of the illuminating second shop. Hey, how to develop a kind of adjustable light-emitting diode (LED) drive 201138546 actuator can solve the above-mentioned _, that is, the motivation of nuclear turn. SUMMARY OF THE INVENTION An object of the present invention is to provide a driver for an adjustable light-emitting diode (LED), which is configured to prevent an abnormal situation such as flashing or extinction when the brightness of the light-emitting diode is adjusted. Thereby to prevent the discomfort of the user's eyes and increase the life of the light-emitting diode. In order to achieve the foregoing objective, an adjustable light-emitting diode (LED) driver according to the present invention is electrically connected between the light-emitting body and the parent current source, and the light-emitting diode is electrically connected. The power supply is electrically connected to a dimming unit and a transformer rectifying unit. The driver includes: a detecting unit electrically connected to the transformer unit After the adjustment of the dimming unit and whether the operating current of the dimming unit is the minimum operating current, when the choke power supply is adjusted by the dimming early element, 'output a driving signal' when the operating current of the dimming unit For the minimum working current, a start signal is output, and vice versa, a turn-off signal is output; an adjusting unit is electrically connected to the detecting unit, and the adjusting unit receives the driving signal and outputs a dimming signal after the operation, the adjusting After receiving the start signal, the unit rotates a start control signal, and the adjustment unit outputs the off signal after receiving the off signal; a pulse width modulation (PWM) signal modulating unit electrically connected to the adjusting unit, the pulse width modulation (PWM) signal modulating unit receiving the dimming signal and performing the scaling according to the pulse width modulation signal Mixing and adjusting 201138546 system and outputting an identification signal; a pulse width modulation (PWM) control unit electrically connected between the pulse width modulation (PWM) signal modulation unit and the variable voltage driving unit After receiving the identification signal, the variable (PWM) control unit is configured to limit the output power of the variable voltage driving unit; an AC load unit electrically connected to the adjusting unit, the AC load unit receiving the starting control signal, Then, a current is supplied to the dimming unit, and the AC load unit receives the shutdown control signal, and then stops supplying current to the dimming unit.
較佳的，當該交流電源經過該調光單元的調整時，該 調光早7L則輸出一導通相位角補推遲信號給該檢測單元， 該檢測單元财算丨相應的導通相位肖獅舰轉換成該 驅動信號。 ° 較佳的，當該調節單元接收到該驅動信號經運算出才 切相位角的大小後輸出—相應賴光信號。 …較佳的’當該檢測單元未檢測出該交流電源經過該畜 光單元的調整時，則輸出—保持信號給該調節單元。 有關本發明為達成上述目的，所採用之技術、手段及其+ 力力絲舉-較佳可行實施例並配合圖式詳細說明如产。 【實施方式] α 二極體閱二1 2圖’本發明實施例所提供的-種可調式發> 歧流電源^之驅動器’適用電性連接該發光二極體1 /、 "、之間’該發光二極體11電性連接有一變肩 驅動單元13,該交产雷、、塔19兩 逆丧有變！ μ電源12電性連接有一調光單元14岁 201138546 一變壓整流單元15， 〇这驅動器主要係由一檢 調節單元30、—舭办咱総⑺胸、 則早兀20、一 調變（PWM)控制單 丄 兀4〇、一脈寬 中： ⑽以及一父流負載單元60所組成，其 該檢測單元20為-交㈣相位角檢測 接該變壓整流單元15,用以檢測該交流電源121、^生連 該調光單元u的調整以及該調光單元14的工作 為最小工作電流，當該檢測單元2G檢測出該交流電源^ 經過該織早元14的娜時，職出—驅動錢，反 輸出-保持信號’其中該檢測單元2()檢_該交流 12經過該調光單元14的罐時，該調光單元η是輪出二 導通相位角_遲信號給該檢測單元2Q，該檢=單^ : 再計算出相應的導通相位_推遲並轉換成該驅動信號； 當該檢測單元20檢測出該調光單元14的工作電流為最】 工作電流時，則輪出一啟動信號，反之則輪出一關閉信號J。 該調節單元30，其電性連接該檢測單元2〇，當該調節 單元30接收到該檢測單元2〇的驅動信號經運算出補切相 位角的大小後輸出一相應的調光信號；當該調節單元昶 接收到該檢測單元20的保持信號則不進行任何的動作；該 調節單元30接收到該啟動信號後輸出一啟動控制信號，該 調節單元30接收到該關閉信號後輸出一關閉啟動信號。 該脈寬調變（PWM)信號調製單元40，其電性連接該調 201138546 節單元30，該脈寬調變（PWM)信號調製單元4〇接收到該調 節單元30的調光信號後連同該脈寬調變信號按照一定的 比例進行混合調製，而輸出一識別信號。 該脈寬調變（PWM)控制單元50，其電性連接該脈寬調 變（PWM)信號調製單元40與該變壓驅動單元13之間，該脈 寬調變（PWM)控制單元50接收到該脈寬調變㈣)信號調 製單元40的識別信號後，用以限制該變壓驅動單元13的 輸出功率大小’藉關整該發光二極體u的照明亮度。 上該交流負載單元60,其電性連接該調節單元別，當該 交流負載單元60接收到該調節單元3〇的啟動控制信號， 則提供y電流給該調光單元14，以維持該調光單元14正 常作，田該又流負載單凡6〇接收到該調節單元洲的關 閉控制信號，則停止提供電流給該調光單元u。 #明。以上所料為本發施例各主要構解元及其組態說 閱第2圖。靖作動方敍其功效如下，複請 當交流電由第2圖申的f M ^ 調光單元Η髮71 201138546 當該檢測單元20檢測到使用者對該調光單元14進行調光 的動作，該調光單元U職出-導通相位角補推遲信號給 該檢測單元2〇，驗測單元2〇則計算出相應的導通相位 角補推遲並轉換成-驅動信號，同時將該驅動信號傳至該 調節單元30 ’該調節單元30則計算出補切相位角的大小轉 換為相應的調光信號大小發送到該脈寬調變（pwM)信號調製 單元4G ’該脈寬調變⑽)賴調製單元4()將賴:信號 後連同該脈寬霞信號_ —定的_進行混合調製，而 輸出一識別信號至該脈寬調變（PWM)控制單元5〇，該脈寬 調變（PWM)控制單元50則得以限制該變壓驅動單元13的輸 出功率大小，而由於該發光二極體n使科是—種固定的 電壓，當輸出功率改變時，不變，電流就必定減小，電流 的減小，該發光二極體11的發光度隨電流的大小變化成正比 關系’因此得以調整該發光二極體U的照明亮度。 另外，當該調光單元14在調整的過程中，該交流負载單 元60接收到該調節單元3〇的啟動控制信號，則提供一電 流給該調光單元14，以_軸光單幻4正常工作，該 發光二極體11才會在變暗時正常的工作。 人 是以，藉由該驅動器的電性連接除了可對該發光二極體 11的照明亮度進行調整之外，更得以避免發生閃燈或熄滅等 /、吊狀況藉以翻防止朗麵睛不適以及增加該發光二極 體11壽命的目的。 201138546 除此之外’本發明的驅動器可以共用傳統的交流式調光 器，在更換發光二極體（led)燈具時，不用更換該調光器， 節省不必要的損耗，達到真正的節能。 綜上所述，此實施例及圖示僅為本發明之較佳實施例而 已，當不能以之限定本發明實施之範圍，即大凡依本發明申請 專利範圍所作之均等變化與修飾’皆應屬本發明專利涵蓋之範 圍内。 • 【圖式簡單說明】 第1圖係本發明的方塊圖示意圖。 第2圖係本發明的電路圖示意圖。 【主要元件符號說明】 發光二極體11 交流電源12 變壓驅動單元13 # 調光單元14 變壓整流單元15 檢測單元20 調節單元30 脈寬調變（PWM)信號調製單元4〇 脈寬調變（PWM)控制單元5〇 交流負载單元60 保險絲71 201138546 EMI濾波電路72 電阻73Preferably, when the AC power supply is adjusted by the dimming unit, the dimming is 7L early, and a conduction phase angle compensation delay signal is output to the detecting unit, and the detecting unit is converted to a corresponding conduction phase. Into the drive signal. Preferably, when the adjusting unit receives the magnitude of the phase angle after the driving signal is calculated, the adjusting unit outputs a corresponding light signal. Preferably, when the detecting unit does not detect the adjustment of the AC power source through the light unit, it outputs a hold signal to the adjusting unit. The present invention has been made in view of the above objects, the techniques and means employed, and the preferred embodiments thereof, as well as the drawings. [Embodiment] α-dipoles are shown in the following figure. The driver of the present invention is electrically coupled to the light-emitting diode 1 /, " There is a variable shoulder drive unit 13 electrically connected between the light-emitting diodes 11 , and the exchange of thunder and the tower 19 are reversed! μ power supply 12 is electrically connected to a dimming unit 14 years old 201138546 a transformer rectifier unit 15, 〇 this driver is mainly composed of a check adjustment unit 30, 舭 咱総 (7) chest, then early 兀 20, a modulation (PWM a control unit 4〇, a pulse width: (10) and a parent flow load unit 60, the detection unit 20 is - (four) phase angle detection connected to the transformer rectifier unit 15 for detecting the AC power 121, the adjustment of the dimming unit u and the operation of the dimming unit 14 is a minimum operating current, when the detecting unit 2G detects that the alternating current power source ^ passes through the woven early element 14 Money, reverse output-hold signal 'where the detecting unit 2 () detects that the alternating current 12 passes through the tank of the dimming unit 14, the dimming unit n is a two-conducting phase angle_late signal to the detecting unit 2Q , the detection = single ^: then calculate the corresponding conduction phase _ deferred and converted into the driving signal; when the detecting unit 20 detects that the operating current of the dimming unit 14 is the most operative current, then the wheel is activated The signal, on the other hand, turns off a turn-off signal J. The adjusting unit 30 is electrically connected to the detecting unit 2〇, and when the adjusting unit 30 receives the driving signal of the detecting unit 2〇, calculates a magnitude of the complementary phase angle, and outputs a corresponding dimming signal; The adjusting unit 不 receives the holding signal of the detecting unit 20 and does not perform any action; the adjusting unit 30 outputs a starting control signal after receiving the starting signal, and the adjusting unit 30 outputs a closing start signal after receiving the closing signal. . The pulse width modulation (PWM) signal modulating unit 40 is electrically connected to the unit 201138546 unit 30, and the pulse width modulation (PWM) signal modulating unit 4 receives the dimming signal of the adjusting unit 30 together with the The pulse width modulation signal is mixed and modulated according to a certain ratio, and an identification signal is output. The pulse width modulation (PWM) control unit 50 is electrically connected between the pulse width modulation (PWM) signal modulation unit 40 and the variable voltage driving unit 13, and the pulse width modulation (PWM) control unit 50 receives After the pulse width modulation (4)) the identification signal of the signal modulating unit 40, the output power level of the voltage-variable driving unit 13 is used to limit the illumination brightness of the light-emitting diode u. The AC load unit 60 is electrically connected to the adjusting unit. When the AC load unit 60 receives the start control signal of the adjusting unit 3, a current of y is supplied to the dimming unit 14 to maintain the dimming. The unit 14 is normally operated, and the current load controller 6 receives the shutdown control signal of the adjustment unit continent, and then stops supplying current to the dimming unit u. #Bright. The above is the main configuration of the main examples of the embodiment and its configuration. The function of Jing Zuofang is as follows. When the AC power is applied by the f M ^ dimming unit of the second picture 71 201138546, when the detecting unit 20 detects the user dimming the dimming unit 14, the The dimming unit U performs a conduction phase angle compensation delay signal to the detecting unit 2〇, and the testing unit 2〇 calculates a corresponding conduction phase angle compensation delay and converts into a driving signal, and transmits the driving signal to the The adjusting unit 30 is configured to calculate the magnitude of the complementary phase angle to be converted into a corresponding dimming signal size and sent to the pulse width modulation (pwM) signal modulating unit 4G 'the pulse width modulation (10)) modulating unit 4() is to mix and modulate the signal together with the pulse width signal _ _, and output an identification signal to the pulse width modulation (PWM) control unit 5 〇, the pulse width modulation (PWM) The control unit 50 can limit the output power of the variable voltage driving unit 13, and since the light emitting diode n makes the voltage a fixed voltage, when the output power changes, the current is constant, and the current is reduced. Reduction of the light-emitting diode 11 Luminosity with the change in current magnitude proportional 'to be adjusted so that the illumination brightness of the light-emitting diode U. In addition, when the dimming unit 14 receives the activation control signal of the adjustment unit 3〇 during the adjustment process, a current is supplied to the dimming unit 14 to normalize the _axis light. Working, the light-emitting diode 11 will work normally when it is darkened. In addition to the electrical connection of the driver, in addition to adjusting the illumination brightness of the LED 11, it is also possible to avoid flashing or extinction, and the hanging condition can prevent the discomfort and the discomfort. The purpose of increasing the life of the light-emitting diode 11 is achieved. 201138546 In addition, the driver of the present invention can share the traditional AC dimmer. When replacing the LED lamp, the dimmer is not required to be replaced, thereby saving unnecessary loss and achieving real energy saving. In the above, the embodiments and the illustrations are only the preferred embodiments of the present invention, and the scope of the present invention is not limited thereto, that is, the equivalent changes and modifications of the scope of the patent application of the present invention should be It is within the scope of the patent of the present invention. • [Simplified Schematic Description] Fig. 1 is a block diagram of the present invention. Figure 2 is a schematic diagram of the circuit diagram of the present invention. [Main component symbol description] Light-emitting diode 11 AC power supply 12 Transformer drive unit 13 # dimming unit 14 Transformer rectification unit 15 Detection unit 20 Adjustment unit 30 Pulse width modulation (PWM) signal modulation unit 4 〇 pulse width adjustment Variable (PWM) control unit 5 〇 AC load unit 60 fuse 71 201138546 EMI filter circuit 72 resistor 73
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