Claims (1)
M363048 六、申請專利範圍： 從年 <丨A:;M363048 VI. Patent application scope: From the year <丨A:;
. 1.一種多燈管驅動系統，用於驅動複數燈管，該多燈管驅 動系統包括： ' 逆變器單元，用於提供交流訊號以驅動該等燈管； 電流平衡單元，用於平衡流經該等燈管的電流，包括複數 - 第一平衡變壓器，該等第一平衡變壓器的高壓侧一端連接 • 該逆變器單元，以接收該交流訊號，另一端連接該等放電 ' 燈的一端，該第一平衡變壓器的低壓側依次串聯； • 迴授單元，用於偵測流經該等燈管的電流，並產生迴授訊 號迴授至該逆變器單元，該迴授單元包括迴授變壓器及迴 授電路，該迴授變壓器的第一側與該第一平衡變壓器的低 - 壓側串聯，該迴授變壓器的第二侧與該迴授電路相連；及 開燈保護偵測單元，用於偵測該迴授變壓器的電壓變化， 並根據偵測的電壓變化產生偵測訊號並傳送至該逆變器單 元，該開燈保護偵測單元包括偵測線圈及開燈保護偵測電 路，該偵測線圈纏繞在該迴授變壓器上，其一端接地，另 φ 一端連接至該開燈保護偵測電路。 2. 如申請專利範圍第1項所述之多燈管驅動系統，其中該 迴授變壓器的第一侧的一端與該第一平衡變壓器的第一個 的低壓側的第一端相連，另一端與該第一平衡變壓器的最 — 後一個的低壓侧的第二端相連，以組成封閉迴路。 3. 如申請專利範圍第1項所述之多燈管驅動系統，其中該 逆變器單元還用於根據該偵測訊號的變化判斷該燈管是否 發生異常並在發生異常時進行保護。 4. 如申請專利範圍第1項所述之多燈管驅動系統，其中該 11 M363048 ίΫ 6 電流平衡單元還包括複數第二平衡變壓器，該等i二苹衡 i 變壓器的高壓側一端連接該逆變器單元，另一端連接該等 燈管的另一端，該第二平衡變壓器的低壓側依次串聯。 " 5.如申請專利範圍第4項所述之多燈管驅動系統，其中該 等第一平衡變壓器的第一個的低壓側的第一端與該等第二 平衡變壓器的第一個的低壓側的第一端相連，該等第一平 衡變壓器的最後一個的低壓侧的第二端與該迴授變壓器的 ' 第一側的一端相連，該迴授變壓器的第一側的另一端與該 _ 等第二平衡變壓器的最後一個的低壓側的第二端相連，以 組成封閉迴路。 6.—種多燈管驅動系統，用於驅動複數燈管，該多燈管驅 動系統包括： 逆變器單元，用於提供交流訊號以驅動該等燈管； 電流平衡單元，用於平衡流經該等燈管的電流，包括複數 第一平衡變壓器，該等第一平衡變壓器的高壓側一端連接 該逆變器單元，以接收該交流訊號，另一端連接該等放電 | 燈的一端，該等第一平衡變壓器的低壓側依次串聯； 迴授單元，用於偵測流經該等燈管的電流，並產生迴授訊 號迴授至該逆變器單元，該迴授單元包括迴授變壓器及迴 授電路，該迴授變壓器的第一侧與該等第一平衡變壓器的 •低壓側串聯，該迴授變壓器的第二側與該迴授電路相連； 及 開燈保護偵測單元，用於偵測該迴授變壓器的電壓變化， 並根據偵測的電壓變化產生偵測訊號並傳送至該逆變器單 元，該開燈保護偵測單元包括偵測變壓器及開燈保護偵測 12 M363048 • ^ ί ^ ’電路，該偵測變壓器的第一側與該迴授變壓器的第—側並 . 聯，第二側連接至該開燈保護偵測電路。 7. 如申請專利範圍第6項所述之多燈管驅動系統，其中該 迴授變壓器的第一侧的一端與該等第一平衡變壓器的第一 個，低壓側的第一端相連，另一端與該等第一平衡變壓器 .的最後一個的低壓侧的第二端相連，以組成封閉迴路。 8. 如申請專利範圍第6項所述之多燈管驅動系統，其中該 逆變器單元還用於根據該偵測訊號的變化判斷該等燈管是 Φ 否發生異常並在發生異常時進行保護。 9. 如申請專利範圍第6項所述之多燈管驅動系統，其中該 電流平衡單元還包括複數第二平衡變壓器，該等第二平衡 變壓器的高壓側一端連接該逆變器單元，另一端連接該等 燈管的另一端，該等第二平衡變壓器的低壓侧依次串聯。 如申請專利範圍第9項所述之多燈管驅動系統，其中該 等第一平衡變壓器的第一個的低壓側的第一端與該等第二 =衡變壓器的第一個的低壓側的第一端相連，該等第一平 # ，變壓器的最後一個的低壓側的第二端與該迴授變壓器的 ，一侧的一端相連，該迴授變壓器的第一侧的另一端與該 - 等第二平衡變壓器的最後一個的低壓側的第二端相遠， 組成封閉迴路。 13A multi-lamp drive system for driving a plurality of lamp tubes, the multi-lamp drive system comprising: 'an inverter unit for providing an alternating signal to drive the tubes; a current balancing unit for balancing The current flowing through the lamps includes a plurality of first balance transformers, one end of the first balance transformer connected to the high voltage side, the inverter unit to receive the alternating current signal, and the other end connected to the discharge lamps One end, the low-voltage side of the first balance transformer is connected in series; a feedback unit for detecting a current flowing through the lamps, and generating a feedback signal to the inverter unit, the feedback unit includes Returning the transformer and the feedback circuit, the first side of the feedback transformer is connected in series with the low-voltage side of the first balance transformer, the second side of the feedback transformer is connected to the feedback circuit; and the light protection detection is performed The unit is configured to detect a voltage change of the feedback transformer, and generate a detection signal according to the detected voltage change and transmit the detection signal to the inverter unit, where the light protection detection unit includes a detection coil and a light protection The detection circuit is wound around the feedback transformer, one end of which is grounded, and the other end of which is connected to the light protection detection circuit. 2. The multi-lamp drive system of claim 1, wherein one end of the first side of the feedback transformer is connected to the first end of the first low-voltage side of the first balance transformer, and the other end Connected to the second end of the most downstream side of the first balance transformer to form a closed loop. 3. The multi-lamp driving system of claim 1, wherein the inverter unit is further configured to determine whether the lamp is abnormal according to the change of the detecting signal and to protect when an abnormality occurs. 4. The multi-lamp driving system according to claim 1, wherein the 11 M363048 ίΫ 6 current balancing unit further comprises a plurality of second balancing transformers, wherein the high-voltage side end of the i-Butheng transformer is connected to the inverse The other end of the lamp unit is connected to the other end of the lamp tube, and the low voltage side of the second balance transformer is connected in series. 5. The multi-lamp drive system of claim 4, wherein the first end of the first low-voltage side of the first balance transformer and the first end of the second balance transformer a first end of the low voltage side is connected, and a second end of the low side of the last balance transformer is connected to an end of the first side of the feedback transformer, and the other end of the first side of the feedback transformer is The second end of the low pressure side of the last of the second balance transformers is connected to form a closed loop. 6. A multi-lamp driving system for driving a plurality of lamps, the multi-lamp driving system comprising: an inverter unit for providing an alternating signal to drive the lamps; a current balancing unit for balancing the flow The current through the lamps includes a plurality of first balance transformers, wherein the high voltage side of the first balance transformer is connected to the inverter unit to receive the alternating current signal, and the other end is connected to one end of the discharge lamp. Waiting for the low-voltage side of the first balance transformer to be connected in series; the feedback unit is configured to detect the current flowing through the lamps, and generate a feedback signal to the inverter unit, the feedback unit includes a feedback transformer And a feedback circuit, the first side of the feedback transformer is connected in series with the low voltage side of the first balance transformer, the second side of the feedback transformer is connected to the feedback circuit; and the light protection detection unit is used Detecting a voltage change of the feedback transformer and generating a detection signal according to the detected voltage change and transmitting the detection signal to the inverter unit, the light protection detection unit includes a detection transformer and a light protection detection Measuring 12 M363048 • ^ ί ^ ' circuit, the first side of the detecting transformer is connected to the first side of the feedback transformer, and the second side is connected to the turn-on protection detecting circuit. 7. The multi-lamp drive system of claim 6, wherein one end of the first side of the feedback transformer is connected to the first end of the first balance transformer, the first end of the low-voltage side, and One end is connected to the second end of the low pressure side of the last of the first balance transformers to form a closed loop. 8. The multi-lamp driving system of claim 6, wherein the inverter unit is further configured to determine, according to the change of the detection signal, that the lamps are Φ, whether an abnormality occurs, and when an abnormality occurs protection. 9. The multi-lamp driving system of claim 6, wherein the current balancing unit further comprises a plurality of second balancing transformers, wherein the high-voltage side of the second balancing transformer is connected to the inverter unit at one end, and the other end The other end of the tubes is connected, and the low voltage sides of the second balance transformers are connected in series. The multi-lamp drive system of claim 9, wherein the first end of the first low-voltage side of the first balance transformer and the low-voltage side of the first one of the second-balance transformers The first end is connected, and the first end of the first low side of the transformer is connected to one end of the feedback transformer, and the other end of the first side of the feedback transformer is The second end of the low pressure side of the last of the second balance transformers is far apart to form a closed loop. 13