200913788 九、發明說明： 【發明所屬之技術領域】 本發明係關於一種使複數個冷陰極放電燈（CCFL : Cold Cathode Fluorescent Lamp)、外部電極螢光燈或螢光燈等放 電燈點燈的放電燈點燈裝置。 【先前技術】 冷陰極放電燈，一般而言，係藉由變流器施加數10kHz 之頻率且數百V〜數千V之電壓進行點燈。又，亦有一種 稱為外部電極螢光燈（EEFL : External Electrode Fluorescent Lamp)之螢光管。外部電極螢光燈與冷陰極放電燈其電極 之構造並不同，但此外則幾乎無不同，發光原理亦與冷陰 極放電燈相同。因此，用以使外部電極螢光燈與冷陰極放 電燈點燈之變流器在原理上係相同。因此，以下使用冷陰 極放電燈（簡稱為放電燈）來說明。 放電燈與變流器，係使用於液晶TV、液晶監測器、 知明裝置、液晶顯示裝置、及招牌等。變流器大多係以變 壓器升壓，此變流器有稱為「一端高壓」之系統與稱為「兩 端高壓」之系統。一端高壓系統，係變壓器之二次繞組（放 電燈側）之一側相對於接地（GND)呈低壓之系統，兩端高壓 系 '、、先係變壓器之二次繞組之兩端相對於接地呈高壓之系 統。 圖1係表示使用相關之一端高壓系統之放電燈點燈裝 ^的電路圖。該一端高壓系統，係以變流器部2〇及面板 。 構成變器部2 0係將直流電壓轉換成高頻電壓， 200913788 亚以變壓器T3將高頻電壓升壓，使高壓之高頻電壓產生 於變壓器Τ3之二次繞組S丨（一端係接地）。藉由於二次繞 、’且S1所產生之高頻電壓’使電流流至面板部3 0内之放電 燈1 ’以使放電燈1點燈。又，流至放電燈1之電流係藉 由電流檢測電阻R1與二極體D1，D2所構成之電流檢測電 路來檢測。控制電路（未圖示），係將所檢測出之電流控制 於既定值。 該一端高壓系統中’除了流至放電燈1或電路元件之 電流以外，亦存在流至寄生電容之電流。電流流過變壓器 T3之二次繞組S1的電流路徑，有通過用以檢測二次繞組 si之電壓之電壓檢測電容器C1，C2的電流路徑（1)、通過 位於配線等，主要為高壓部與底板等間之寄生電容C 5的 電流路徑（2) '及通過放電燈1的電流路徑（3) ^ 一般而言，由於底板等亦屬接地電位，因此對底板等 流動之漏電流會直接返回變壓器T3。因此，圖【之例中， 由於流過路徑（1)與路徑（2)之電流不會流過電流檢測電阻 R1，流過電流檢測電阻R1者僅有流過路徑（3)之電流，因 此藉由電流檢測電阻R1即可檢測出僅流至放電燈丨之電 流。使用該電流檢測值即可高精度進行回饋控制。又，圖 之例中&於電壓檢測電容器C2與電流檢測電阻Ri皆 連接於接地，因此易於進行以接地電位為基準之電流檢 測。圖2係表示將圖i所示之一端高壓系統構裝於面板部 的構成例。如目2所示，於面板部3〇併設有複數個放電 燈1 ’各放電燈1係以電線3連接於變流器部，變流器 200913788 部20係以1片基板構成。 另-方面’兩端高壓系統由於無法確定變壓 — 繞組的接地電位，且二次繞組 α 一人 δ ^ ^ 啕鈿為间壓，因此難以檢 L至放電燈之電流或變壓器之電壓。因此，Κ 3所一之 兩：高壓系統係以變壓器Τ4之二次側為f丨二次繞二 與第2二次繞組S2，並將各繞組之—料接於接地^ =變壓…二次侧的接地電位，以接地電位為基準 來檢測各繞組之電流、電壓。 此時，電流之路徑則有通過電壓檢測電容器^ c3, C4的電流路徑⑴、通過配線等之寄生電容c5, a的電流 路徑(2)、及通過放電燈la，lb @電流路徑(3)。由於流： 電流檢測電阻R1，R2《電流僅有流過路徑（3)之電流，因 此可藉由電流檢測電阻Rl，R2來檢測僅流至放電燈ia，ib 之電流。使用該電流檢測值即可高精度進行回饋控制。又， 由於電壓檢測電容器C2，C4與電流檢測電阻R1, R2皆連 接於接地，因此易於進行以接地電位為基準之電流檢測。 又，相關技術已知有記載於例如日本公開實用新案公 報實開平6-19299號者。 【發明内容】 然而，必須於各放電燈1 a，1 b之一端設置由二極體D j， D2及電流檢測電阻R1構成之第〗電流檢測電路、與由二 極體D3, D4及電流檢測電阻R2構成之第2電流檢測電路。 圖4係表示將圖3所示之兩端高壓系統構裝於面板部的構 成例。如圖4所示，除了用於變流器部之基板2〇a以外， 200913788 亦增設有用於第1電流檢測電路及第2電流檢測電路之基 板20b。又，必須設置連接於基板20a，20b之連接器、導 線等，會使成本增加。因此，為了降低成本，如圖5所示， 將電流檢測電阻Rl，R2等電流檢測電路設置於變流器部而 以1片基板構成。 然而，圖5所示之構成例中，通過變壓器T5之二次 繞组Sl，S2的電流路徑，有通過電壓檢測電容器ci, C2, C3, C4之電流路徑（1)、通過配線等之寄生電容〇5, C6之電流 路徑（2)、及通過放電燈ia，ib之電流路徑（3)。亦即，會 產生路徑（1) (2) (3)之所有電流皆流至電流檢測電阻！^丨，R2 的問題。以下，針對此問題作說明。 控制放電燈之亮度的最有效方法，係控制流至放電燈 之電流。放電燈其因溫度所產生之阻抗變化較大。亦即， 由於即使在點燈時之溫度狀態阻抗亦會變化，點燈後放電 燈之溫度亦會上升’因此阻抗隨時在變化。又，因放電燈 之個別差異阻抗亦會有偏差。 為了控制使一定電流流至放電燈，係使施加於放電燈 之電壓改變。亦即，由於使變壓器之電壓隨時在變化，因 此流至電容器成分之路徑（1)、（2)的電流亦隨時在變化。由 於此變化之電流值係與路徑（3)之電流值相加後流至電流檢 測電阻R1，R2，因此無法正確檢測出放電燈之電流值。放 電燈之亮度係取決於路徑（3)之電流值，路徑（1)(2)之電流 值對亮度並無幫助。因此，在以混合路徑（1)(2)(3)之電流 的檢測值進行回饋控制時，放電燈點燈之後，放電燈電流 200913788 會與時間一起變化。又，依周圍溫度或裝置之構裝狀態， 亦會產生放電燈電流變化之現象。 具體而言，由於低溫時流過路徑（1)(2)之電流會增加， 而使流過電流檢測電阻R1，R2之電流增加，因此其結果會 使流過放電燈la，lb之電流減少。由於高溫時流過路徑（1)(2) 之電流會減少，而使流過電流檢測電阻R1，R2之電流減 少，因此其結果會使流過放電燈la，lb之電流增加。亦即， 放電燈在低溫時變得較暗，在高溫時變得較亮，亮度會變 化。 如此，圖5所示之電路雖具有能以工片基板構成之優 點，但流至放電燈之電流卻會因溫度變化等而產生變動。 根據本發明，可提供一種能抵消流至寄生電容等電容 成分之漏電流的影響，而實現既廉價且溫度特性亦良好的 放電燈點燈裝置。 為了解決前述課題，根據本發明之第丨技術面，放電 燈點燈裝置’其特徵在於’具有：變流器，呈 組、第^次繞組、與第2二次繞組之變壓器，將直^ 壓轉換成南頻電壓並藉由該變壓器使該高頻電壓升壓；丄 個以上之放電燈，係連接於該變壓器之該第1二次銬組之 一端與該第2二次繞組之—端之m電流檢測=路， 一端連接於該變壓器之該第i二次繞組之另一端，另一端 接地，以檢測流至㈣1二次繞組之電流；第壓檢測 電路，用以檢測該變㈣之帛丨二次、m端與該接地 之間的電壓；以及第1電流修正電路，根據㈣！電壓檢 200913788 測電路所檢測φ & & 出之電壓，修正該第1電流檢測電路所檢測 出之電流。 根據本發明+ # 、 β之第2技術面，該放電燈點燈裝置進—步 具有：第2雷& 电机檢測電路，一端連接於該變壓器之該第2 二次繞組之另—唑 % ’另一端連接於該第1電流檢測電路盥 該接地，以洛、、日，丨、士 '、 /流至該第2二次繞組之電流；第2電壓檢 測電路，用LV &、， 仏測該變壓器之第2二次繞組之一端與該接 地之間的電壓. 人 以及第2電流修正電路，根據該第2電壓 、!電路所檢測出之電壓，修正該第2電流檢測電路所檢 測出之電流。 、根據本發明之第3技術面，放電燈點燈裝置，其特徵 ；"、有.變流器’具備具一次繞組、第1二次繞組、 伽第 2 - _ 一-人繞組之變壓器’將直流電壓轉換成高頻電壓並 藉由。亥^壓器使該高頻電壓升壓；1個以上之放電燈，係 連接於該變壓器之該第1二次繞組之—端與該帛2二次繞 組之—端之問，楚1 + d ^ ’乐1電流檢測電路，一端連接於該變壓器 x第1 一-人繞組之另—端，另一端接地，以檢測流至該 之第i人、兀組之電流；第1電容器，-端連接於該變壓器 人"堯、’且之糙；第2電流檢測電路，一端連接於 5亥第1電容器之另—4山 另一端連接於該接地，以檢測流 4 1電容器之電流；以及第1電流修正電路’根據該 電流檢測電路所檢測出之電流，修正該第1電流檢測 电路所檢測出之電流。 根據本發明之第4 技術面，該放電燈點燈裝置進一步 200913788 具有：第3電流檢測電路’―料接於該變壓器之 一次繞組之另一端，另一端i車垃认-*>- /sir 連接於该第1電流檢測電路盘 该接地，以檢測流至該第2二次繞組之電流；第2電_/、 -端連接於該變壓器之第2二次繞組之一端；二 測電路，一端連接於該第2電容器 仙·欢 00〜刀 碼，另—端連接200913788 IX. Description of the Invention: [Technical Field] The present invention relates to discharge of a plurality of discharge lamps such as a CCFL (Cold Cathode Fluorescent Lamp), an external electrode fluorescent lamp or a fluorescent lamp. Lamp lighting device. [Prior Art] A cold cathode discharge lamp is generally powered by a voltage of several 10 kHz and a voltage of several hundred V to several thousands V by a current transformer. Further, there is a fluorescent tube called an external electrode fluorescent lamp (EEFL: External Electrode Fluorescent Lamp). The external electrode fluorescent lamp and the cold cathode discharge lamp have different electrodes, but in addition, there is almost no difference, and the principle of illumination is the same as that of the cold cathode discharge lamp. Therefore, the converter for illuminating the external electrode fluorescent lamp and the cold cathode discharge lamp is identical in principle. Therefore, the following description will be made using a cold cathode discharge lamp (referred to as a discharge lamp). Discharge lamps and converters are used in liquid crystal TVs, liquid crystal monitors, intelligent devices, liquid crystal display devices, and signboards. Most of the converters are boosted by a transformer. This converter has a system called "one end high voltage" and a system called "two end high voltage". The high-voltage system at one end is a system in which one side of the secondary winding (discharge lamp side) of the transformer is low-voltage with respect to the ground (GND), and the two ends of the secondary winding of the first-stage transformer are opposite to the ground. High pressure system. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a circuit diagram showing the use of a discharge lamp lighting fixture of a related one-end high voltage system. The one end high pressure system is connected to the converter unit 2 and the panel. The transformer unit 20 converts the DC voltage into a high-frequency voltage, and in 200913788, the transformer T3 boosts the high-frequency voltage, and the high-voltage high-voltage voltage is generated in the secondary winding S of the transformer Τ3 (one end is grounded). The discharge lamp 1 is turned on by causing a current to flow to the discharge lamp 1' in the panel portion 30 by the secondary winding, and the high-frequency voltage generated by S1. Further, the current flowing to the discharge lamp 1 is detected by a current detecting circuit composed of a current detecting resistor R1 and diodes D1 and D2. A control circuit (not shown) controls the detected current to a predetermined value. In the high-voltage system of the one end, in addition to the current flowing to the discharge lamp 1 or the circuit element, there is also a current flowing to the parasitic capacitance. The current flows through the current path of the secondary winding S1 of the transformer T3, and the current path (1) of the voltage detecting capacitors C1, C2 through which the voltage of the secondary winding si is detected is passed through the wiring, etc., mainly for the high voltage portion and the bottom plate. The current path (2) of the parasitic capacitance C 5 and the current path through the discharge lamp 1 (3) ^ Generally, since the bottom plate and the like are also grounded, the leakage current to the bottom plate or the like is directly returned to the transformer. T3. Therefore, in the example of the figure, since the current flowing through the path (1) and the path (2) does not flow through the current detecting resistor R1, only the current flowing through the current detecting resistor R1 flows through the path (3), The current flowing only to the discharge lamp 即可 can be detected by the current detecting resistor R1. Feedback control can be performed with high precision using this current detection value. Further, in the example of the figure, both the voltage detecting capacitor C2 and the current detecting resistor Ri are connected to the ground, so that the current detection based on the ground potential can be easily performed. Fig. 2 is a view showing an example of a configuration in which one end high-pressure system shown in Fig. i is attached to a panel portion. As shown in Fig. 2, a plurality of discharge lamps 1 are disposed on the panel unit 3'. Each of the discharge lamps 1 is connected to the converter unit by a wire 3, and the converter 200913788 is formed of a single substrate. On the other hand, the high-voltage system at both ends cannot determine the grounding potential of the transformer, the grounding potential of the winding, and the secondary winding α δ ^ ^ 一 is the inter-voltage, so it is difficult to detect the current to the discharge lamp or the voltage of the transformer. Therefore, two of the two: the high-voltage system is based on the secondary side of the transformer Τ4 as f丨 secondary winding 2 and the second secondary winding S2, and the materials of the windings are connected to the ground ^ = transformer... The ground potential of the secondary side is used to detect the current and voltage of each winding based on the ground potential. At this time, the path of the current has a current path (1) through the voltage detecting capacitors c3, C4, a current path (2) through a parasitic capacitance c5, a such as a wiring, and a discharge lamp la, lb @ current path (3) . Since the current: current detecting resistor R1, R2 "the current only flows through the path (3), the current flowing to the discharge lamp ia, ib can be detected by the current detecting resistors R1, R2. Feedback control can be performed with high precision using this current detection value. Further, since the voltage detecting capacitors C2 and C4 and the current detecting resistors R1 and R2 are connected to the ground, it is easy to perform current detection based on the ground potential. Further, the related art is known, for example, from Japanese Laid-Open Patent Publication No. 6-19299. SUMMARY OF THE INVENTION However, it is necessary to provide a current detecting circuit composed of a diode D j, D2 and a current detecting resistor R1 at one end of each of the discharge lamps 1 a, 1 b, and a current from the diodes D3, D4 and current. A second current detecting circuit composed of the detecting resistor R2. Fig. 4 is a view showing an example of a configuration in which the high-end systems at both ends shown in Fig. 3 are attached to a panel portion. As shown in Fig. 4, in addition to the substrate 2A for the converter portion, a substrate 20b for the first current detecting circuit and the second current detecting circuit is added to 200913788. Further, it is necessary to provide connectors, wires, and the like connected to the substrates 20a and 20b, which increases the cost. Therefore, in order to reduce the cost, as shown in Fig. 5, a current detecting circuit such as current detecting resistors R1, R2 is provided in the converter portion and is constituted by one substrate. However, in the configuration example shown in FIG. 5, the current path through the secondary windings S1, S2 of the transformer T5 has a current path (1) through the voltage detecting capacitors ci, C2, C3, C4, and parasitic wiring. The current path (2) of the capacitor 〇5, C6, and the current path (3) through the discharge lamp ia, ib. That is, all currents that will generate paths (1) (2) (3) will flow to the current sense resistor! ^丨, the problem with R2. The following is a description of this problem. The most effective way to control the brightness of a discharge lamp is to control the current flowing to the discharge lamp. The discharge lamp has a large change in impedance due to temperature. That is, since the temperature state impedance changes even when lighting, the temperature of the discharge lamp rises after lighting, so the impedance changes at any time. Also, the individual impedance of the discharge lamp may vary. In order to control the flow of a certain current to the discharge lamp, the voltage applied to the discharge lamp is changed. That is, since the voltage of the transformer is changed at any time, the currents flowing to the paths (1) and (2) of the capacitor component are also changed at any time. Since the current value of this change is added to the current value of the path (3) and flows to the current detecting resistors R1, R2, the current value of the discharge lamp cannot be correctly detected. The brightness of the discharge lamp depends on the current value of path (3), and the current value of path (1) (2) does not contribute to the brightness. Therefore, when the feedback control is performed with the detected value of the current of the mixing path (1), (2), and (3), the discharge lamp current 200913788 changes with time after the discharge lamp is turned on. Moreover, depending on the ambient temperature or the state of the device, the discharge lamp current changes. Specifically, since the current flowing through the paths (1) and (2) increases at a low temperature, the current flowing through the current detecting resistors R1 and R2 increases, so that the current flowing through the discharge lamps 1a and 1b decreases. Since the current flowing through the path (1) (2) is reduced at a high temperature, the current flowing through the current detecting resistors R1 and R2 is reduced, so that the current flowing through the discharge lamp la, lb increases. That is, the discharge lamp becomes darker at a low temperature, becomes brighter at a high temperature, and the brightness changes. As described above, the circuit shown in Fig. 5 has the advantage of being able to be formed by a work piece substrate, but the current flowing to the discharge lamp changes due to temperature changes and the like. According to the present invention, it is possible to provide a discharge lamp lighting device which is capable of canceling the influence of leakage current flowing to a capacitance component such as a parasitic capacitance, and which is inexpensive and has excellent temperature characteristics. In order to solve the above problems, according to a first technical aspect of the present invention, a discharge lamp lighting device 'is characterized by: a converter, a transformer of a group, a second winding, and a second secondary winding, which will be straight. Converting the voltage into a south frequency voltage and boosting the high frequency voltage by the transformer; more than one discharge lamp is connected to one end of the first secondary winding group of the transformer and the second secondary winding - End m current detection = path, one end is connected to the other end of the ith secondary winding of the transformer, the other end is grounded to detect the current flowing to the (four) 1 secondary winding; the first voltage detecting circuit is used to detect the change (4) Then, the voltage between the second, m-term and the ground; and the first current correction circuit, according to (4)! Voltage detection 200913788 The circuit detects the voltage of φ && and corrects the current detected by the first current detecting circuit. According to the second technical aspect of + # and β of the present invention, the discharge lamp lighting device further comprises: a second lightning & motor detecting circuit, one end of which is connected to the second secondary winding of the transformer 'The other end is connected to the first current detecting circuit 盥 the ground, the current flowing to the second secondary winding by Luo, 日, 丨, 士', /, and the second voltage detecting circuit using LV & Detecting a voltage between one end of the second secondary winding of the transformer and the ground. The human and the second current correcting circuit correct the second current detecting circuit based on the voltage detected by the second voltage and the circuit The current detected. According to a third aspect of the present invention, a discharge lamp lighting device is characterized in that: "the converter" has a transformer having a primary winding, a first secondary winding, and a gamma 2 - _ one-person winding. 'Convert DC voltage into high frequency voltage and use it. The high voltage voltage is boosted by the voltage regulator; one or more discharge lamps are connected to the end of the first secondary winding of the transformer and the end of the secondary winding of the 帛2, Chu 1 + d ^ 'Le 1 current detection circuit, one end is connected to the other end of the first x-man winding of the transformer x, and the other end is grounded to detect the current flowing to the i-th person and the 兀 group; the first capacitor, - The end is connected to the transformer, and the second current detecting circuit is connected at one end to the other end of the 5th first capacitor, and the other end is connected to the ground to detect the current of the capacitor 4 1; The first current correcting circuit 'corrects the current detected by the first current detecting circuit based on the current detected by the current detecting circuit. According to the fourth technical aspect of the present invention, the discharge lamp lighting device further has 200913788: the third current detecting circuit is connected to the other end of the primary winding of the transformer, and the other end is ignited -*>- / Sir connected to the first current detecting circuit board to ground to detect current flowing to the second secondary winding; the second electric_/, - terminal is connected to one end of the second secondary winding of the transformer; One end is connected to the second capacitor, Xianhuan 00~knife code, and the other end is connected.
於該接地，以檢測流至該第2電容器之電流；以及第2電 流修正電路，根據該第4電流檢測電路所檢測出之電流， 修正該第3電流檢測電路所檢測出之電流。 ⑽ 根據本發明之第5技術面，在該第】〜第4技術面之 任一放電燈點燈裝置中，該變壓器由具有一次繞組I二次 繞組之第1變壓器及第2變壓器構成，該變壓器之第（二 次繞組由該第1變壓器之二次繞組構成，該變壓器之第2 一次繞組由該第2變壓器之二次繞組構成。 根據本發明之第6技術面，放電燈點燈裝置，其特徵 在於’具有.變流器’具備具—次繞組、第1二次繞組、 與第2二次繞組之}個以上之變麼器，將直流電壓轉換成 高頻電壓並藉由該丨個以上之變壓器使該高頻電壓升壓； 1個以上之放電燈，係分別設於各該變壓器，並連接於該 變壓器之該第1二次繞組之一端與該第2二次繞組之一端 之間；1個以上之第丨電流檢測電路，係與該丨個以上之 凌壓對應設置，一端連接於該變壓器之該第丨二次繞組 之另一端，另一端接地，以檢測流至該第丨二次繞組之電 流；1個以上之第2電流檢測電路，係與該丨個以上之變 壓器對應設置，一端連接於該變壓器之該第2二次繞組之 200913788 另-端，另-端連接於該第丨電流檢測電路與該接地，以 檢測流至該第2二次繞組之電流；i冑以上之第i電壓檢 測電路，係與肖1個以上之變壓器對應設置，用以檢測該 變壓器之該第1二次繞組之一端與該接地之間的電壓；1 個以上之f 2電壓檢測電路，係與該i個以上之變壓器對 應設置，用以檢測該變壓器之該第2二次繞組之一端盥該 接地之間的電壓；以及帛i電流修正電路，根據該i個二 上之第1電壓檢測電路及該！個以上之第2電壓檢測電路 中之1個電壓檢測電路所檢測出之電壓、或將該丨個以上 之第1電壓檢測電路及該i個以上之第2電壓檢測電路中 之複數個電壓檢測電路所檢測出之電壓加以算術平均後的 電壓，來修正該1個以上之第丨電流檢測電路及該1個以 上之第2電流檢測電路中之i個電流檢測電路所檢測出之 電流、或將該1個以上之第丨電流檢測電路及該丨個以上 之第2電流檢測電路中之複數個電流檢測電路所檢測出之 電"IL加以算術平均後的電流。 【實施方式】 以下’參照圖式詳細說明本發明之放電燈點燈裝置的 實施形態。 Μ_1實施你 流過圖5所示之路徑（1)的電流，會因施加於電壓檢測 電谷器Cl，C2，C3，C4之電壓值而變化。流過圖5所示之 路徑（2)的電流，只要寄生電容c5，C6為一定，亦會因施 加於寄生電容C5，C6之電壓值而變化。路徑（1)(2)之任一 12 200913788 路徑，其電流皆取決於 决於施加在電容器之電壓值。亦即，流 過路徑（1)(2)之電流，係與 丹更桃态輪出電壓成比例。 因此，第1實施例中， '、特徵在於藉由與變流器輸出 電C值成比例的電氣量 ^ (1)(2)之電流來進行佟正。 ^ 亦即’輅由變流器輸出電壓來預 測路徑（1 )(2)之電流量。 其久’參照圖6親明太欢nn姑 、 發月第1實施例之放電燈點燈 衣置的構成。圖ό中，變壓器下】 坚器T1具有一次繞組p丨、第叉 一'次繞組S 1、及第9 - -A / 弟2 — -人繞組S2而構成變流器。該變流 器係藉由控制電路（未圖示），使開關元件（未圖示）導通/斷 開（〇N/OFF)’藉此將直流電壓轉換成高頻電壓，並藉由變 壓isTl使該高頻電壓升壓， 1 ^ 丹鞠出至第1二次繞組S1與 第2 —欠繞組S 2。於變廢哭τ 1 —姑， 孓雙歷窃T1之第i二次繞組S1之一端 與弟2 一次繞組S2之一端之問，电确：女以+你 %疋間串聯有放電燈la盥放電 燈 1 b。 ' 電燈1 a, 1 b由例如冷陰極放電燈、外部電極螢光燈 或螢光燈構成，此處係使用冷陰極放電燈。 於T1之第1二次繞組S1之—端與放電燈u 之連接點與接地之間，連接電壓檢測電容器C1與電壓檢 測電容器C2之串聯電路，並連接有寄生電容^。於變壓 器T1之第2二次繞組S2之一端與放電燈ib之連接點與 接地之間，連接電壓檢測電容器C3與電壓檢測電容器C4 之串聯電路，並連接有寄生電容C6。 電流檢測電路3a(第丨電流檢測電路），其一端連接於 13 200913788 變壓器τι之第，_ ^ t 一二人繞組S1之另一端，另一端則 以檢測流至第】_ A U 啕則接地， 乐1 一次繞組S〗之電流。 電壓檢測電1 塵器丁!之第】(第1電麼檢測電路)，係用以檢測變 ^ ^ . 一次繞組S1之一端與接地之間的電壓（第i 變流斋輪出雷厭、分 ^ 係㈣W 篁調整電路7a(第1電流修正電路)， 係根據電壓檢測齋 ) 、j電路5a所檢測出之電壓，調整 流之電流修正量…w 正用以修正電 里加減法電路9a(第1電流修正雷 對電流檢測電路3私认， 电丨正電路），係 電路7a之雷、： 之電流，進行來自修正量調整 ^ X ^ Φ ^ . 异稭此修正電流，並將經 ^ 冽值輸出至該變流器所具有之控制電路。 電流檢測電路3b(第2電 ㈣器丁!之第其一端連接於 从, 人繞組S2之另—端，另一端則接地， 以檢測流至第2二次繞組82之電流。 ^壓檢測電路5b(第2電壓檢测電路），係用以檢測變 1之第2二次繞組以之-端與接地之間的電壓(第2 變流器輸出電壓）。修正量調整電 々、 β J"電路7b(第2電流修正電 路)’係根據電壓檢測電路5b所檢測出之電壓調整用以 修正電流之電流修正量。加減法電路外（第2電流修正電 路），係對電流檢測電路3b所檢測屮+帝4 惯’出之電流，進行來自修 正量調整電路7b之電流修正量的a # _ & 重的加減運算，藉此修正電 流，並將經修正之電流檢測值輪出至該變流器所具有之控 制電路。變流器所具有之控制電路 4电塔’係未出經加減法電路 以所修正之電流與經加減法電路9b所修正之電流的平均 電流值，使開關元件導通/斷開來進行舰（脈寬調變）控 14 200913788 制，以將該平均電流值控制於既定值。 乂隻麼盗T1之第i二次繞組S1之—端與變麗器丁1 之第2 一人’澆組S2之一端之間的電壓為變流器輸出電壓(第 1變流器輸出電壓與第2變流器輸出電壓的電壓差），並將 該變流器輸出電壓施加於放電燈丨a，丨b。 ，匕方式所構成《帛丨冑施例之放電燈點燈裝 置，電塵檢測電路5a，5b係檢測變流器輸出電壓，修正量 凋整電路7a，7b係根據所檢測之變流器輸出電壓來調整電 流修正量’加減法電路9a，外則對電流檢測電路&讣之 電流檢：值’進行修正量調整電路7a，几之電流修正量的 加減運异，而求得經修正之電流檢測值。 具體而s’變流器輸出電壓愈大，則路徑⑴⑺之電流 亦愈大，流過電流檢測電阻Rl，^之電流即增加而使電流 ㈣H變流器輸出電壓愈大’則從電流檢測 值減去愈大之電流修正量。 由於變流器輸出電壓為交流電壓，因此藉由使用二極 體等之檢測電路，不論變流器輸出電壓為正值或負值皆容 2測。在檢測出變壓器輸出電壓為正值時，即從放電燈 電流檢測值減去該值。在檢測出變壓器輸出電壓為負值 時，即將該值加於放電燈電流檢測值。藉此，不直接檢測 漏電流（路徑⑴⑺之電流），而可進行抵消漏電流影響之電 流檢測，而能實現既廉價且溫度特性亦良好的變流器。 又，控制電路由於係求出經加減法電路9續修正之電 流與經加減法電路9b所修正之電流的平均電流值，因此 15 200913788 可進一步提升電流檢測精度。 第2實施例 圖7係表示本發明之第2實施例之放電燈點燈裝置之 構成的圖圖7所示之第2實施例中，相對於圖6所示之 第1實施例’在下述之點不同，亦即以電屢檢測電容器c ^ 與電壓檢測電容器C2之連接點的電屢為帛i變流器輸出 私C並輸入至修正量調整電路7a，以電壓檢測電容器〇 。包d則電谷n C4之連接點的電廢為第2變流器輸出 電壓’並輸入至修正量調整電路7b。 根據此種構成，除了可獲得與第丨實施例相同之效果 外，由於可刪除電壓檢測電路5a，5b，因此更為廉價。 第3貫施例 圖8係表示本發明之第3實施例之放電燈點燈裝置之 =的圖。圖8所示之第3實施例，其特徵係在於設置電 容器C7, C8與電流檢測電路lla，m，以取代_ 6所示之 第1實施例之電壓檢測電路5a，5b與修正量調整電路7 7b。 a， 於變壓器T1之第i二次繞組S1之—端與放電燈“ 之連接點與接地之間，連接有電容器C7(第丨電容器）與 流檢測電路lla(第2電流檢測電路）之串聯電路。電流檢$ 電路Ha，係用以檢測流至電容器〇之電流。加 9a’係對電流檢測電路3a(第！ ^流檢測電路）所檢測出之 電流，進行來自電流檢測電路lla之電流修正 ^ 4* , „ 里W、J加减運 开’猎此修正電流’並將經修正之電流檢測值輸出至該變 16 200913788 流器所具有之控制電路。 於變壓器T1U 2二次隸S2之—端與放電 之連接點與接地之間，連接有電容器C8(第2電容器）與。 流檢測電路nb(第4電流檢測電路）之串聯電路。電^電 測電路1 lb，係用以檢測流至電容器C8之電流。加減檢 路9b，係對電流檢測電路3b(第3電流檢測電路）所檢琪= 之電流，進行來自電流檢測電路i lb之電流修正1 運具，精此修正電流，並將經修正之電流檢測值輸出至該 變流器所具有之控制電路。變流器所具有之控制電路，係 求出經加減法電路9a所修正之電流與經加減法電路9b所 修正之電流的平均電流值，使開關元件導通/斷開來進行 PWM控制’以將該平均電流值控制於既定值。 根據以此方式所構成之第3實施例之玫電燈點燈裝 置，電流檢測電路Ua，i lb係檢測流至電容器C7, c8之電 流。所檢測出之電流係與所施加之變流器輸出電壓成比 例。因此，由於該電流值係與漏電流（路徑之電流）呈 比例關係，因此以該電流值為電流修正量輸出至加減法電 路9a，9b。加減法電路9a，9b係對電流檢測電路3b之 電流檢測值，進行電流檢測電路1 la，1 lb之電流修正量的 加減運算，而求得經修正之電流檢測值。 因此’根據第3實施例，亦可獲得與第1實施例相同 之效果。 第4實 圖9係表示本發明之第4實施例之放電燈點燈裝置之 17 200913788 構成的圖。圖9所示之第4實施例，係較圖7所示之第1 實施例之放電燈點燈裝置更具體的實施例。 二極體D1、二極體D2、及電阻R1係構成電流檢測電 路3a，二極體D3、二極體D4、及電阻R2則構成電流檢 測電路3b。二極體D5、及電阻R3係構成電壓檢測電路， 一極體D7、及電阻R9則構成電壓檢測電路。電阻R5、 及電阻R6係構成加減法電路9a，電阻R7、及電阻R8則 構成加減法電路9b。 於二極體D1之兩端，連接有二極體D2與電阻 串聯電路，於二極體D3之兩端，連接有二極體D4與電阻 R2之串聯電路。一極體D5之陰極係連接於電壓檢測電容 器ci與電壓檢測電容器C2之連接點，二極體〇5之陽極 則透過電阻R3接地。二極體D7之陰極係連接於電壓檢測 電容器C3與電壓檢測電容$ C4之連接，點，二極體⑺之 陽極則透過電阻R9接地。 二極體D2與電阻R1之連接點、與二極體D5與電阻 R3之連接點之間，連接有電阻R5與電阻R6之串聯電路 二極體D4與電阻们之連接點、與二極體D7與電阻Μ 之連接點之間，連接有電阻R7與電阻R8之串聯電路。 根據此種構成’與藉由電阻R1所檢測出 例之電壓’即施加於電阻R5。與藉由電阻R2所檢 電流成比例之電壓，即施加於電阻R7 、出之 ^ M 精由一極體D5鱼 电阻R”欢測出作為第丨變流器輸出電 、 於雷阻R6。兹& . 电^ 即施加 糟由二極體D7與電阻R9檢測出作為第之變 18 200913788 流益輸出電壓之電壓，即施加於電阻R8。 此處，係藉由二極體D5，D7之作用以檢測出交流電壓 之負側。電阻R5, R6係將與藉由電阻幻所檢測出之電流 成比例之電壓，與藉由二極體D5與電阻R3所檢測出之電 壓相加，並將該相加後之值輪出至控制電路。電阻尺7汉8 係將與藉由電阻R2所檢測出之電流成比例之電壓，與藉 由二極體D7與電阻R9所檢測出之電壓相加，並將該相^ 後之值輸出至控制電路。 根據第4實施例，用於電流修正之追加零件，由於僅 為二極體D5, D7、電阻R3, R9, R6, R8之6個，因此能以 非常少之零件進行電流修正。 弟5貫施例 圖1 〇係表示本發明之第5實施例之放電燈點燈裝置之 構成的圖。圖9所示之第4實施例中，雖檢測變流器輸出 電壓作為修正量使用，但圖1〇所示之第5實施例，其特 徵在於檢測流至用以檢測第i、第2變流器輸出電壓之電 谷器的電流。 圖8所示之第3實施例中，雖另設置用以檢測電流之 電谷器C7，C8 ’但第5實施例中，則使用既有之電壓檢測 電容器 Cl, C2, C3, C4。 亦即’藉由連接於電壓檢測電容器C2與接地之間的 電阻R11，檢測流至電壓檢測電容器C丨，C2之電流。又， 藉由連接於電壓檢測電容器C4與接地之間的電阻R12， 檢測流至電壓檢測電容器C3, C4之電流。 19 200913788 由於該電流檢測值係與變流器輸出電壓成比例，因此 與圖9之電壓檢測電容器C2, C4的電壓值相似。因此，根 據圖所示之第5實施例，亦可_ 9之第4實施例同 樣地進行電流修正。 又，用於電流修正之追加零件’由於僅為二極體D5 電阻R3,叫从队叫^^^因此能以非 常少之零件進行電流修正。 .第6蜜祐，你丨 圖11係表示本發明之第6實施例之放電燈點燈裝置之 構成的圖。圖11所示之第6實施例，係僅使用第1變流 器輸出電壓進行電流修正。 根據第6實施例，與藉由電阻R1所檢測出之電流成 比例之電壓係施加於電阻R5。藉由二極體與電阻们 檢測作為第1變流器輸出電壓之電壓並施加於電阻R6。電 T R5, R6係、將與藉由電阻R1所檢測出之電流成比例之電 壓，與藉由二極體D5與電阻R3所檢測出之電壓相加，並 將該相加後之值輸出至控制電路。 亦即，即使僅檢測第丨變流器輪出電壓亦可獲得與第 1實施例相同之效果。 “又，用於電流修正之追加零件，由於僅為二極體D5、 電阻R3’ R6之3個，因此能以非常少之零件進行電流修正。 此外，相對於圖11所示之構成，即使進一步刪除二極 體D3, D4、電阻R2，並將變壓器T1之第2二次繞組a 之另—端連接於接地、電阻R1之一端、及二極體Di之陽 200913788 極，亦可獲得相同之效果。 第7實施例 圖12係表示本發明之第7實施例之放電燈點燈裝置之 構成的圖。圖6至® U所示之第】實施例至第6實施例 中，雖於變壓器T1之第丨二次繞組S1之―端與第2二次 繞組S2之一端之間，連接有放電燈la與放電燈lb，但圖 12所示之第7實施例中，於變壓器T1之第工二次繞組si 之-端與第2二次繞組S2之—端之間，連接冑丨個放電 燈1。 如此，即使是使1個放電燈i點燈之系統，亦可獲得 與第1實施例至第6實施例相同之效果。該系統特別是在 放電燈"交長而須要高電壓時等最為有效。每一個放電燈 藉由使用帛i二次繞組81與第2二次繞組以：個繞組， 可使各繞組電壓減為一半。 弟8貫施例____ 回 系表示本發明之第8實施例之放電燈點燈裝置之 構成的圖。圖1至圖12 、 口 2所不之第1實施例至第7實施例 中’雖以1個變壓 11藉由第1二次繞組S1與第2二次 繞組S2而作為2個輪 ^ 箱〗出仁圖13所示之第8實施例中， 係使用具有-分姑έθ Ι> 1 & 、’A、、· 與二次繞組s 1之1個輸出之變壓 器T2a(第1變壓器）、盥呈右 ^ ；與具有一次繞組P2與二次繞組S2 之1個輸出之變壓器T2b(第2變壓器）的2個變壓器。 —此種第8實施例’亦可獲得與第1實施例相同之效果。 弟9實施& 21 200913788 圖14係表示本發明之第9實施例之放電燈點燈裝置之 構成的圖。圖丨丨所示之第6實施例中，加減法電路％雖 輸入來自電流檢測電路3a之電流，但圖14所示之第9實 施例中，加減法電路9c係對來自電流檢測電路h之電流， 進行來自修正量調整電路7a之電流修正量的加減運算，藉 此正電；^IL，並將經修正之電流檢測值輸出.至該變流薄具 有之控制電路。亦即，根據電壓檢測電路5a所檢測出之電 壓’修正來自電流檢測電路3b之電流。 此種第9實施例，亦可獲得與第〗實施例相同之效果。 第10貫施例 圖1 5係表示本發明之第丨〇實施例之放電燈點燈裝置 之構成的圖。圖15所示之第10實施例，係於圖14所示 之第9實施例之構成，進一步具備變壓器T2、電流檢測電 路3c, 3d、及放電燈lc，η。 變壓器T2具有一次繞組P2、第！二次繞組S3、及第 2二次繞組S4，而構成變流器。於變壓器T2之第1二次 繞組S3之一端與第2二次繞組S4之一端之間，串聯有放 電燈lc與放電燈id。 π雙魘器丨2之第i二次繞組S3之一端與放電燈ic 之連接點與接地之間，連接有電壓檢測電容器cu與電壓 檢測電容器C12之串聯電路，並連接有寄生電容ci5。於 變麼器T2之第2二次繞組S4之—端與放電燈ld之連接 點與接地之間，連接有電壓檢測電容器cu與電壓檢測電 谷裔C14之串聯電路，並連接有寄生電容〔μ。 22 200913788 電流檢測電路3c(第1電流檢測電路），其-端連接於 變壓器T2之第1二次繞組S3之另-端，另一端則接地： 以私測流至第1二次繞組S3之電流。電流檢測電路3d(第 2電流檢測電路），其一端連接於變壓器T2之第2二次繞 組S4之另-端，另一端則連接於電流檢測電路^鱼接地， 以檢測流至第2二次繞組以之電流。 ’、 加減法電路9d(第！電流修正電路），係對電流檢測電 路％所檢測出之電流，進行來自修正量調整電路7a之電 流修正量的加減運算’藉此修正電流，並將經修正之電流 檢測值輸出至該變流器具有之控制電路。#即，根據電塵 檢測電路5a所檢測出之電壓，修正來自電流檢 之電流。 貫施例相同之效果。 電流檢測電路3c之 3 d之電流，亦可獲 此種第1 0實施例，亦可獲得與第^ 又，加減法電路9d即使使用來自 電流，以取代使用來自電流檢測電路 得相同之效果。 第11實施例 園1 6係表示本發明之第 之構成的圖。圖14所示之第9實施例中，加減法電路9c 雖僅輸入來自電流檢測電路3b之電流，但圖^所 η實施例中，加法電路9e係進行來自電流檢測電路之 電流與來自電流檢測電s 3b之電流的算術平均以求 均電流，加減法電路9f係對纟自加法電路9e之平均電、, 進行來自修正量調整電路7a之電流修正量的加減運算 23 200913788The ground is sensed to detect a current flowing to the second capacitor; and the second current correcting circuit corrects the current detected by the third current detecting circuit based on the current detected by the fourth current detecting circuit. According to a fifth aspect of the present invention, in the discharge lamp lighting device of any of the fourth to fourth aspects, the transformer includes a first transformer and a second transformer having a primary winding I secondary winding, and the transformer The second winding of the transformer is composed of a secondary winding of the first transformer, and the second primary winding of the transformer is composed of a secondary winding of the second transformer. According to the sixth technical aspect of the present invention, the discharge lamp lighting device , characterized in that the 'having a current transformer' has more than one of a secondary winding, a first secondary winding, and a second secondary winding, and converts a direct current voltage into a high frequency voltage and More than one transformer boosts the high frequency voltage; one or more discharge lamps are respectively disposed in each of the transformers, and are connected to one end of the first secondary winding of the transformer and the second secondary winding Between one end; more than one 丨 current detecting circuit is corresponding to the one or more squeezing pressures, one end is connected to the other end of the second winding of the transformer, and the other end is grounded to detect the flow to The electric power of the second winding One or more second current detecting circuits are provided corresponding to the one or more transformers, one end is connected to the other end of the second secondary winding of the transformer, and the other end is connected to the second current Detecting a circuit and the ground to detect a current flowing to the second secondary winding; i ith or more of the ith voltage detecting circuit is disposed corresponding to one or more transformers for detecting the first two of the transformer a voltage between one end of the secondary winding and the ground; one or more f 2 voltage detecting circuits are disposed corresponding to the one or more transformers for detecting one end of the second secondary winding of the transformer And a current detected by the first voltage detecting circuit and one of the voltage detecting circuits of the second or second voltage detecting circuits; or Correcting the one or more 丨 currents by the voltages obtained by arithmetically averaging the voltages detected by the plurality of first voltage detecting circuits and the plurality of voltage detecting circuits of the one or more second voltage detecting circuits a detection circuit and a current detected by one of the one or more second current detecting circuits, or one or more of the second current detecting circuits and the one or more second current detecting circuits The electric current of the electric current detected by the plurality of current detecting circuits is arithmetically averaged. [Embodiment] Hereinafter, an embodiment of the discharge lamp lighting device of the present invention will be described in detail with reference to the drawings. The current of the path (1) shown in Fig. 5 varies depending on the voltage value applied to the voltage detecting grids C1, C2, C3, and C4. The current flowing through the path (2) shown in Fig. 5 is as long as the parasitic capacitance C5, C6 are constant, and will also vary due to the voltage values applied to the parasitic capacitances C5 and C6. The path of any of the paths (1) and (2) of the 200913788 path depends on the voltage applied to the capacitor. That is, the current flowing through the path (1) (2) is proportional to the turn-over voltage of the Dan. Therefore, in the first embodiment, ', the characteristic is that the current is corrected by the electric current of the electrical quantity ^ (1) (2) which is proportional to the output C value of the converter. ^ That is, the current is measured by the converter output voltage to predict the amount of current in path (1) (2). For a long time, referring to Fig. 6, the structure of the discharge lamp lighting device of the first embodiment of the present invention is shown in Fig. 6. In the figure, under the transformer, the stiffener T1 has a primary winding p丨, a first-secondary winding S 1 , and a 9--A / 2nd - a human winding S2 to form a current transformer. The converter converts a DC voltage into a high-frequency voltage by a switching circuit (not shown) by a control circuit (not shown) to turn on/off (〇N/OFF), and by using a transformer isTl boosts the high-frequency voltage, and 1^ is outputted to the first secondary winding S1 and the second-lower winding S2. In the change of waste crying τ 1 - Gu, 孓 double calendar stealing T1 one of the second winding S1 and the second of the second winding S2, the electricity is indeed: female + you% 疋 series connected to the discharge lamp la盥Discharge lamp 1 b. The electric lamp 1 a, 1 b is constituted by, for example, a cold cathode discharge lamp, an external electrode fluorescent lamp or a fluorescent lamp, here a cold cathode discharge lamp is used. A series circuit of the voltage detecting capacitor C1 and the voltage detecting capacitor C2 is connected between the connection point of the first secondary winding S1 of T1 and the discharge lamp u and the ground, and a parasitic capacitance ^ is connected. A series circuit of a voltage detecting capacitor C3 and a voltage detecting capacitor C4 is connected between a connection point of one end of the second secondary winding S2 of the transformer T1 and the discharge lamp ib, and a parasitic capacitance C6 is connected. The current detecting circuit 3a (the second current detecting circuit) has one end connected to the other end of the 13 200913788 transformer τι, _ ^ t one or two winding S1, and the other end is grounded by detecting the flow to the _ _ AU ,, Le 1 The current of the primary winding S. The voltage detection electric filter D1! (the first electric detection circuit) is used to detect the voltage between the one end of the primary winding S1 and the ground (the i-thinking wheel is out of thunder, The voltage correction amount of the current is adjusted by the voltage detected by the j circuit 5a, and the current correction amount of the current is adjusted to be used to correct the electric radiance subtraction circuit 9a. (The first current correction lightning is privately recognized by the current detecting circuit 3, and the electric current is positive circuit), and the current of the circuit 7a is adjusted by the correction amount ^ X ^ Φ ^ . ^ The threshold value is output to the control circuit of the converter. The current detecting circuit 3b (the second electric (four) device is connected to the other end of the slave winding S2, and the other end is grounded to detect the current flowing to the second secondary winding 82. ^ Pressure detecting circuit 5b (second voltage detecting circuit) is used to detect the voltage between the terminal and the ground of the second secondary winding that is changed to 1 (the second converter output voltage). The correction amount adjusts the voltage, β J" The circuit 7b (second current correction circuit)' adjusts the current correction amount for correcting the current based on the voltage detected by the voltage detecting circuit 5b. The addition and subtraction circuit (second current correction circuit) is used by the current detecting circuit 3b. Detecting the current of the 屮+帝4, and performing the addition and subtraction of the a # _ & the current correction amount from the correction amount adjustment circuit 7b, thereby correcting the current and rotating the corrected current detection value to the The control circuit of the converter has a control circuit 4 which has a control circuit 4 which is not subjected to the addition and subtraction circuit to correct the current and the average current value of the current corrected by the addition and subtraction circuit 9b, so that the switch The component is turned on/off to carry the ship (pulse width) Change) control 14 200913788 system, in order to control the average current value to a predetermined value. 乂 盗 T T T T T T T 第 第 i i T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T The voltage between the converter is the converter output voltage (the voltage difference between the first converter output voltage and the second converter output voltage), and the converter output voltage is applied to the discharge lamp 丨a, 丨b. According to the embodiment, the discharge lamp lighting device of the embodiment, the electric dust detecting circuits 5a, 5b detect the output voltage of the converter, and the correction amount isolating circuits 7a, 7b are based on the detected output voltage of the converter. The current correction amount 'addition and subtraction circuit 9a is adjusted, and the current detection circuit & 电流 current detection value ' is performed by the correction amount adjustment circuit 7a, and the current correction amount is added and subtracted, and the corrected current detection is obtained. Specifically, the larger the output voltage of the s' converter, the larger the current of the path (1) (7) is, and the current flowing through the current detecting resistor R1 increases, so that the current (four) H converter output voltage increases, then the current flows. The detected value is subtracted from the larger current correction amount. The output voltage of the current device is an AC voltage. Therefore, by using a detection circuit such as a diode, the output voltage of the converter is positive or negative, and the voltage is positive. When the output voltage of the transformer is detected to be positive, The discharge lamp current detection value is subtracted from this value. When the transformer output voltage is detected to be a negative value, the value is added to the discharge lamp current detection value. Therefore, the leakage current (current of the path (1) (7)) is not directly detected, but can be performed. The current detection that counteracts the influence of the leakage current can be realized, and a converter that is inexpensive and has good temperature characteristics can be realized. Further, the control circuit obtains the current corrected by the addition and subtraction circuit 9 and the current corrected by the addition and subtraction circuit 9b. The average current value, so 15 200913788 can further improve the current detection accuracy. (Second Embodiment) Fig. 7 is a view showing a configuration of a discharge lamp lighting device according to a second embodiment of the present invention. In the second embodiment shown in Fig. 7, the first embodiment shown in Fig. 6 is described below. The point is different, that is, the power of the connection point between the capacitor C^ and the voltage detecting capacitor C2 is repeatedly outputted to the correction amount adjusting circuit 7a to detect the capacitor 〇. In the package d, the electric waste of the connection point of the electric valley n C4 is the second converter output voltage 'and is input to the correction amount adjustment circuit 7b. According to this configuration, in addition to the same effects as those of the first embodiment, the voltage detecting circuits 5a, 5b can be deleted, which is more inexpensive. Third Embodiment FIG. 8 is a view showing a discharge lamp lighting device according to a third embodiment of the present invention. The third embodiment shown in FIG. 8 is characterized in that capacitors C7, C8 and current detecting circuits 11a, m are provided in place of the voltage detecting circuits 5a, 5b and the correction amount adjusting circuit of the first embodiment shown in FIG. 7 7b. a, in series between the connection point of the ith secondary winding S1 of the transformer T1 and the discharge lamp and the ground, the capacitor C7 (the second capacitor) is connected in series with the flow detecting circuit 11a (the second current detecting circuit) Circuit. Current check $ circuit Ha is used to detect the current flowing to the capacitor 。. Add 9a' to the current detected by the current detecting circuit 3a (the ^^ flow detecting circuit), and perform current from the current detecting circuit 11a. Correct ^ 4* , „ 里 W, J 加减减开' hunting this correction current' and output the corrected current detection value to the control circuit of the transformer. A capacitor C8 (second capacitor) is connected between the junction of the terminal T2 and the discharge of the transformer T1U 2 and the ground. A series circuit of the flow detecting circuit nb (fourth current detecting circuit). The electric measuring circuit 1 lb is used to detect the current flowing to the capacitor C8. The addition and subtraction detection circuit 9b performs a current correction 1 carrier from the current detection circuit i lb on the current detected by the current detecting circuit 3b (third current detecting circuit), and corrects the current and corrects the current. The detected value is output to the control circuit of the converter. The control circuit of the converter determines the average current value of the current corrected by the addition and subtraction circuit 9a and the current corrected by the addition and subtraction circuit 9b, so that the switching element is turned on/off to perform PWM control' The average current value is controlled to a predetermined value. According to the rose lamp lighting device of the third embodiment constructed in this manner, the current detecting circuits Ua, i lb detect the current flowing to the capacitors C7, c8. The detected current is proportional to the applied converter output voltage. Therefore, since the current value is proportional to the leakage current (current of the path), the current value is output to the addition and subtraction circuits 9a, 9b with the current value. The addition and subtraction circuits 9a and 9b measure the current detection value of the current detecting circuit 3b, and add and subtract the current correction amount of the current detecting circuit 1 la, 1 lb to obtain a corrected current detection value. Therefore, according to the third embodiment, the same effects as those of the first embodiment can be obtained. Fourth Embodiment Fig. 9 is a view showing the configuration of a light discharge lamp lighting device according to a fourth embodiment of the present invention. The fourth embodiment shown in Fig. 9 is a more specific embodiment of the discharge lamp lighting device of the first embodiment shown in Fig. 7. The diode D1, the diode D2, and the resistor R1 constitute a current detecting circuit 3a, and the diode D3, the diode D4, and the resistor R2 constitute a current detecting circuit 3b. The diode D5 and the resistor R3 constitute a voltage detecting circuit, and the one-pole body D7 and the resistor R9 constitute a voltage detecting circuit. The resistor R5 and the resistor R6 constitute an addition and subtraction circuit 9a, and the resistor R7 and the resistor R8 constitute an addition and subtraction circuit 9b. A diode D2 and a resistor series circuit are connected to both ends of the diode D1, and a series circuit of a diode D4 and a resistor R2 is connected to both ends of the diode D3. The cathode of the one-pole body D5 is connected to the junction of the voltage detecting capacitor ci and the voltage detecting capacitor C2, and the anode of the diode 〇5 is grounded through the resistor R3. The cathode of the diode D7 is connected to the voltage detecting capacitor C3 and the voltage detecting capacitor $ C4, and the anode of the diode (7) is grounded through the resistor R9. A connection point between the diode D2 and the resistor R1 and a connection point between the diode D5 and the resistor R3 are connected with a connection point of the resistor R5 and the resistor R6 and a connection point of the resistor and the diode. A series circuit of a resistor R7 and a resistor R8 is connected between the connection point of D7 and the resistor Μ. According to this configuration 'and the voltage detected by the resistor R1', it is applied to the resistor R5. The voltage proportional to the current detected by the resistor R2, that is, applied to the resistor R7, is outputted by the one-pole body D5 fish resistor R" as the output power of the second-order converter, and the lightning resistance R6. The voltage is applied to the resistor R8 by the diode D7 and the resistor R9, which is applied to the resistor R8. Here, by the diode D5, D7 The function is to detect the negative side of the AC voltage. The resistors R5, R6 are summed with the voltage proportional to the current detected by the resistor phantom, and the voltage detected by the diode D5 and the resistor R3. And the added value is taken out to the control circuit. The resistor 7 is connected to the current detected by the resistor R2, and is detected by the diode D7 and the resistor R9. The voltages are added, and the value of the phase is output to the control circuit. According to the fourth embodiment, the additional components for current correction are only diodes D5, D7, resistors R3, R9, R6, R8. Six, so the current correction can be performed with very few parts. The fifth embodiment of the invention Figure 1 shows the fifth aspect of the invention Fig. 1 shows a configuration of a discharge lamp lighting device of the embodiment. In the fourth embodiment shown in Fig. 9, the output voltage of the converter is detected as a correction amount, but the fifth embodiment shown in Fig. 1 is characterized. The current flowing to the electric grid device for detecting the output voltages of the i-th and second converters is detected. In the third embodiment shown in FIG. 8, the electric grid device C7, C8' for detecting current is additionally provided. However, in the fifth embodiment, the existing voltage detecting capacitors C1, C2, C3, and C4 are used. That is, the detecting current flows to the voltage detecting capacitor C by the resistor R11 connected between the voltage detecting capacitor C2 and the ground. The current of C2 is detected by a resistor R12 connected between the voltage detecting capacitor C4 and the ground. 19 200913788 Since the current detection value is the output voltage of the converter The ratio is similar to the voltage values of the voltage detecting capacitors C2 and C4 of Fig. 9. Therefore, according to the fifth embodiment shown in the figure, the current correction can be performed in the same manner as in the fourth embodiment of Fig. 9. Modified additional parts 'because only two poles The body D5 resistor R3, called the slave team, can be corrected by a very small number of parts. 6th Honey, Figure 11 shows the composition of the discharge lamp lighting device of the sixth embodiment of the present invention. In the sixth embodiment shown in Fig. 11, current correction is performed using only the output current of the first converter. According to the sixth embodiment, a voltage proportional to the current detected by the resistor R1 is applied to Resistor R5. The voltage which is the output voltage of the first converter is detected by the diode and the resistor, and is applied to the resistor R6. The electric T R5, R6 is a voltage proportional to the current detected by the resistor R1. And adding the voltage detected by the diode D5 and the resistor R3, and outputting the added value to the control circuit. That is, even if only the second-order converter turn-on voltage is detected, the same effect as that of the first embodiment can be obtained. "In addition, since the additional components for current correction are only three of the diode D5 and the resistor R3' R6, current correction can be performed with very few components. Moreover, even with respect to the configuration shown in Fig. 11, Further removing the diodes D3, D4, and resistor R2, and connecting the other end of the second secondary winding a of the transformer T1 to the ground, the one end of the resistor R1, and the anode of the diode Di 200913788, the same can be obtained. (Embodiment) Fig. 12 is a view showing the configuration of a discharge lamp lighting device according to a seventh embodiment of the present invention. In the sixth to sixth embodiments, the sixth to the sixth embodiment are A discharge lamp 1a and a discharge lamp 1b are connected between the end of the second secondary winding S1 of the transformer T1 and one end of the second secondary winding S2, but in the seventh embodiment shown in FIG. 12, the transformer T1 is Between the end of the secondary winding si and the end of the second secondary winding S2, a discharge lamp 1 is connected. Thus, even a system for lighting one discharge lamp i can be obtained. 1 The same effect as the sixth embodiment. The system is particularly high in the discharge lamp The pressing time and the like are most effective. Each of the discharge lamps can reduce the voltage of each winding by half by using the secondary winding 81 and the second secondary winding with one winding. Fig. 1 to Fig. 12 and the second embodiment of the first embodiment to the seventh embodiment, in which the first embodiment is changed to the first embodiment by the first variable to the first embodiment to the seventh embodiment. In the eighth embodiment shown in Fig. 13, the secondary winding S1 and the second secondary winding S2 are used as the two wheel boxes. In the eighth embodiment, the use of -2 & 1 & 1 & Transformer T2a (first transformer) with one output of secondary winding s1, 盥 is right ^; and two transformers with transformer T2b (second transformer) having one output of primary winding P2 and secondary winding S2 In the eighth embodiment, the same effect as that of the first embodiment can be obtained. Fig. 14 is a view showing the configuration of a discharge lamp lighting device according to a ninth embodiment of the present invention. In the sixth embodiment shown in FIG. 5, the addition/subtraction circuit % inputs the current from the current detecting circuit 3a, but the ninth shown in FIG. In the embodiment, the addition and subtraction circuit 9c performs the addition and subtraction of the current correction amount from the correction amount adjustment circuit 7a on the current from the current detection circuit h, thereby positively charging; ^IL, and outputting the corrected current detection value. The control circuit is provided to the converter, that is, the current from the current detecting circuit 3b is corrected based on the voltage detected by the voltage detecting circuit 5a. This ninth embodiment can also be obtained in the same manner as the first embodiment. [Embodiment] Fig. 1 is a view showing the configuration of a discharge lamp lighting device according to a third embodiment of the present invention. The tenth embodiment shown in Fig. 15 is a configuration of the ninth embodiment shown in Fig. 14, and further includes a transformer T2, current detecting circuits 3c, 3d, and discharge lamps lc, η. Transformer T2 has primary winding P2, the first! The secondary winding S3 and the second secondary winding S4 constitute a current transformer. A discharge lamp lc and a discharge lamp id are connected in series between one end of the first secondary winding S3 of the transformer T2 and one end of the second secondary winding S4. A series circuit of a voltage detecting capacitor cu and a voltage detecting capacitor C12 is connected between a connection point of one end of the ith secondary winding S3 of the π double clamp 丨2 and the discharge lamp ic, and a parasitic capacitance ci5 is connected thereto. Between the connection point of the second secondary winding S4 of the transformer T2 and the discharge lamp ld and the ground, a series circuit of a voltage detecting capacitor cu and a voltage detecting electric C-C14 is connected, and a parasitic capacitance is connected. μ. 22 200913788 The current detecting circuit 3c (first current detecting circuit) has its end connected to the other end of the first secondary winding S3 of the transformer T2, and the other end is grounded: it flows to the first secondary winding S3 by private measurement. Current. The current detecting circuit 3d (second current detecting circuit) has one end connected to the other end of the second secondary winding S4 of the transformer T2, and the other end connected to the current detecting circuit ^ fish ground to detect the flow to the second time The winding is current. The addition and subtraction circuit 9d (the current correction circuit) performs the addition and subtraction of the current correction amount from the correction amount adjustment circuit 7a to the current detected by the current detection circuit %, thereby correcting the current and correcting it. The current detection value is output to the control circuit of the converter. # Name, the current from the current detection is corrected based on the voltage detected by the dust detecting circuit 5a. The same effect is applied to the example. The current of the current detecting circuit 3c for 3 d can also obtain the first embodiment, and the same effect as that of the current detecting circuit can be obtained by using the current from the addition and subtraction circuit 9d. Eleventh Embodiment A garden 1 shows a configuration of a first embodiment of the present invention. In the ninth embodiment shown in Fig. 14, the addition and subtraction circuit 9c inputs only the current from the current detecting circuit 3b, but in the embodiment of the embodiment, the adding circuit 9e performs current and current detection from the current detecting circuit. The arithmetic mean of the current of the electric s 3b is the average current, and the addition and subtraction circuit 9f performs the addition and subtraction of the current correction amount from the correction amount adjustment circuit 7a to the average electric power of the self-addition circuit 9e.
修正來自加法電路9e之平均電流。 此修正a - · 有之控 壓，修疋也6 此種第11實施例，亦可獲得與第丨實施例相同之效果。 又，加法電路9e即使進行例如圖H所示之第1〇實施 例之4個電流檢測電路3a〜3d所檢測出之電流的算術平均 以求出平均電流，並將該平均電流輸出至加減法電路9f， 亦可獲得相同之效果。 變更實施例 本發明並非限於該第1實施例至第丨丨實施例之放電燈 點燈裝置。例如，圖8所示之第3實施例中，僅使用電流 檢測電路3a，1 la、電容器C7、及加減法電路9a，則即使 刪除電流檢測電路1 lb、電容器C8、及加減法電路9b，亦 可獲得與第3實施例相同之效果。 又’圖6〜圖11之第1實施例至第6實施例、第8實 施例至第11實施例中，雖放電燈為2個，但放電燈為1 個亦可。又，圖6〜圖12之第1實施例至第7實施例中， 雖使用變壓器T1，但亦可使用例如具有圖1 3所示之一次 繞組P1與二次繞組S 1之變壓器T2a、與具有一次繞組P2 與二次繞組S2之變壓器T2b以取代變壓器T1。此時，變 壓器T1之第1二次繞組S1由變壓器T2a之二次繞組S1 構成，變壓器T1之第2二次繞組S2由變壓器T2b之二次 繞組S2構成。 又，在圖14之構成’亦可進一步將電壓檢測電路5b 24 200913788 設於電壓檢測電容II C3與電壓檢測電容器C4之串 的兩端，並將電壓檢測電路5b之檢測電壓輸入至修正旦 調整電路7b，以取代電壓檢測電路5&之檢測電麗。〆里 又’在圖15之構成’亦可進一步將電壓檢測電路 _髮檢測電容器C3與電壓檢測電容器以之 的兩端，將電壓檢測電路5c設於電壓檢測電容器Cl〗盥 電壓檢測電容H⑴之串聯電路的兩端，將電壓檢路 5d设於電壓檢測電容器C13與電壓檢測電容器C14 聯電路的兩端，並將電壓檢測電4 5d之檢測電壓輸 修正量調整電路7a，以取代電壓檢測電路5a之檢測電整。 _又，在圖16之構成，亦可進一步將電壓檢測電路5b 5又於？壓檢測電容器C3與電壓檢測電容器C4之串聯電路 的兩鳊，進行電壓檢測電路5a之檢測電壓與電壓檢測電路 %之檢測電壓的算術平均以求出平均電壓，並將該平均雷 壓輸入至修正量調整電路7a。 根據本發明之第1技術面，由於第1電流檢測電路係 檢測流至變壓@' , 15之第1二次繞組之電流，第1電壓檢測電 β係檢測變壓态之第1二次繞組之-端與接地之間之電 壓亦即檢測第1變流器輸出電壓，帛1電流修正電路係 根據第1雷壓j^. >a! ^ 登仏測電路所檢測出之電壓，修正第1電流檢 」電路所松測出之電流’因此可抵消漏電流之影響，而能 實現既廉價且溫度特性亦良好的變流器。 根據本發明之第2技術面，由於第2電流檢測電路係 檢測流至變厭毋^ 坚器之第2二次繞組之電流，第2電壓檢測電 25 200913788 路係檢測變壓哭 壓，亦即檢測第7第2二次繞組之一端與接地之間之電 根據第2電壓檢、、則：流器輸出電壓’帛2電流修正電路係 、目丨I带* ’電路所檢測出之電壓，修正第2雷、士給 測電路所檢測ψ ^ ^乐2電流檢 實現％鏖彳t 電流，因此可抵消漏電流之影響，而能 實現既廉價且溫度特性亦良好的變流器。 根據本發明之坌 檢測流至變壓器之笛 由於第1電流檢測電路係 路係檢测流至第〗/ —次繞組之電流，帛2電流檢測電 據第2電奸測φ 之電流，第1電流修正電路係根 φ w '、_電路所檢測出之電流，修正第1電$ ί丨 電路所檢測出之雷法 弟1電流檢測 J@ BE. ^ M /；1因此可抵消漏電流之影響，而能實 見既廉價且溫度特性亦良好的變流器。 -實 根據本發明之笛 檢測流至變壓器之笛_術面’由於第3電流檢測電路係 路係檢測流至第2番2 一次繞組之電流，^ 4電流檢測電 據第4電流^則雷器之電流，第2電流修正電路係根 現既廉價且溫声I:因此可抵消漏電流之影響，而能實 又特性亦良好的變流器。 根據本發明> @ c & <弟5技術面，亦可使用第彳鐵厭β 2變壓器作為變壓器。 Η便用第1變壓讀第The average current from the adding circuit 9e is corrected. This correction a - · has a control pressure, and the repair is also the same as the eleventh embodiment. Further, the adding circuit 9e obtains an arithmetic mean of the currents detected by the four current detecting circuits 3a to 3d of the first embodiment shown in Fig. H to obtain an average current, and outputs the average current to the addition and subtraction method. The same effect can be obtained by the circuit 9f. Modified Example The present invention is not limited to the discharge lamp lighting device of the first to third embodiments. For example, in the third embodiment shown in FIG. 8, only the current detecting circuit 3a, the capacitor C7, and the addition and subtraction circuit 9a are used, even if the current detecting circuit 1 lb, the capacitor C8, and the addition and subtraction circuit 9b are deleted, The same effects as those of the third embodiment can be obtained. Further, in the first to sixth embodiments and the eighth to eleventh embodiments of Figs. 6 to 11, although there are two discharge lamps, one discharge lamp may be used. Further, in the first to seventh embodiments of FIGS. 6 to 12, the transformer T1 is used, but for example, the transformer T2a having the primary winding P1 and the secondary winding S1 shown in FIG. A transformer T2b having a primary winding P2 and a secondary winding S2 is substituted for the transformer T1. At this time, the first secondary winding S1 of the transformer T1 is constituted by the secondary winding S1 of the transformer T2a, and the second secondary winding S2 of the transformer T1 is constituted by the secondary winding S2 of the transformer T2b. Further, in the configuration of FIG. 14, the voltage detecting circuit 5b 24 200913788 may be further provided at both ends of the string of the voltage detecting capacitor II C3 and the voltage detecting capacitor C4, and the detection voltage of the voltage detecting circuit 5b is input to the correction adjustment. The circuit 7b is substituted for the detection of the voltage detection circuit 5& Further, in the configuration of FIG. 15, the voltage detecting circuit _ is further connected to the detecting capacitor C3 and the voltage detecting capacitor, and the voltage detecting circuit 5c is provided in the voltage detecting capacitor C1 and the voltage detecting capacitor H(1). At both ends of the series circuit, the voltage detection circuit 5d is disposed at both ends of the circuit of the voltage detecting capacitor C13 and the voltage detecting capacitor C14, and the detection voltage of the voltage detecting circuit 45d is sent to the correction amount adjusting circuit 7a to replace the voltage detecting circuit. 5a detection and finishing. _ Again, in the configuration of FIG. 16, the voltage detecting circuit 5b 5 can be further used again? Two turns of the series circuit of the voltage detecting capacitor C3 and the voltage detecting capacitor C4, the arithmetic mean of the detected voltage of the voltage detecting circuit 5a and the detecting voltage of the voltage detecting circuit % is obtained to obtain an average voltage, and the average lightning pressure is input to the correction. The amount adjustment circuit 7a. According to the first aspect of the present invention, the first current detecting circuit detects the current flowing to the first secondary winding of the transformers @', 15 , and the first voltage detecting circuit β detects the first time of the transformed state. The voltage between the end of the winding and the ground also detects the output voltage of the first converter, and the current correction circuit of the 帛1 is based on the voltage detected by the first lightning voltage j^. >a! ^ By correcting the current measured by the first current check circuit, it is possible to offset the influence of the leakage current, and it is possible to realize a converter which is inexpensive and has excellent temperature characteristics. According to the second aspect of the present invention, the second current detecting circuit detects the current flowing to the second secondary winding of the anaerobic device, and the second voltage detecting circuit 25 200913788 detects the voltage change and the pressure is also suppressed. That is, the electric power between the one end of the seventh and second secondary windings and the ground is detected. According to the second voltage, the voltage detected by the current output voltage '帛2 current correction circuit system, the target I band*' circuit is detected. Corrected the second ray and the circuit to be tested by the 雷 ^ ^ 2 current detection to achieve % 鏖彳 t current, so the effect of leakage current can be offset, and a converter that is inexpensive and has good temperature characteristics can be realized. According to the present invention, the sputum is detected to flow to the transformer. Since the first current detecting circuit system detects the current flowing to the ninth/secondary winding, the 电流2 current detecting electric current is the second electric current to measure the current of φ, the first The current correction circuit is the current detected by the circuit φ w ', _, and corrects the first detection of the first power $ 丨 丨 雷 雷 1 1 1 1 电流 电流 电流 电流 电流 电流 电流 电流 电流 电流 电流 电流 电流 电流 电流 电流 电流 电流 电流The effect is to realize a converter that is both inexpensive and has good temperature characteristics. - According to the present invention, the flute detection flow to the flute of the transformer _ operative surface 'Because the third current detecting circuit system detects the current flowing to the second secondary winding, ^ 4 current detecting electric current fourth current ^ thunder The current of the device, the second current correction circuit is a converter that is inexpensive and has a good temperature I: therefore, it can offset the influence of leakage current, and has good performance and good characteristics. According to the invention > @c &<<>>, the second aspect of the invention can also be used as a transformer. I used the first transformer to read the first
根據本發明> I 根據1個以上之:二Γ面’㈣1電流修正電路係 檢測電路中之丨檢測電路及1個以上之第2電壓 個以上之第^ 檢測電路所檢測出之電壓、或將i ^ 壓檢測電路及1個以上之第2電壓檢％ 路中之複數個電壓撝、s, + 电魘檢冽電 檢測電路所檢測出之電壓加以算術平均 26 200913788 後的電壓，來修正1個以上之第1電流檢測電路及1個以 上之第 電流檢測電路中之丨個電流檢測電路所檢測出之 電"IL或將1個以上之第1電流檢測電路及1個以上之第 2電机檢測電路中之複數個電流檢測電路所檢測出之電流 加以算術平均後的電流，因此可抵消漏電流之影響，而能 貝現既廉價且溫度特性亦良好的變流器。 本發明可利用在使複數個放電燈點燈的放電燈點燈裝 置。 ‘ (美國指定） 有關於美國指定，本國際專利申請案係針對2〇〇7年6 月日提出之日本專利申請第2007— 167454號（2007年6 月26日申請），根據美國專利法第119條⑷援用優先權之 利盈’並引用該揭示内容。 【圖式簡單說明】 圖1係表示使用相關之一 置的電路圖。 端高壓系統之放電燈點燈裴 端高壓系統構裝於面板部 圖2係表示將圖1所示之一 之構成例的圖。 係使用相關之兩端高壓系統之放電燈點 圖3係#用相關 點燈裝置的According to the present invention, the voltage detected by the 丨 detection circuit in the detection circuit of the two-side (4) 1 current correction circuit and the second detection circuit of one or more second voltages, or Correcting the voltage detected by the i ^ voltage detection circuit and the voltages detected by the plurality of voltages s, s, + 魇 冽 冽 detection circuit of the one or more second voltage detection circuits by arithmetic average 26 200913788 One or more of the first current detecting circuit and one or more of the one or more current detecting circuits detect the electric power "IL or one or more first current detecting circuits and one or more (2) The current detected by the plurality of current detecting circuits in the motor detecting circuit is arithmetically averaged, so that the influence of the leakage current can be offset, and a converter which is inexpensive and has good temperature characteristics can be obtained. The present invention makes use of a discharge lamp lighting device for lighting a plurality of discharge lamps. '(US Designation) For the purposes of the United States, this international patent application is filed on June 26, 2007, Japanese Patent Application No. 2007-167454 (filed on June 26, 2007), under US Patent Law 119(4) invokes the priority of profit and cites the disclosure. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a circuit diagram showing the use of a correlation. The discharge lamp of the end high-pressure system is turned on, and the high-pressure system is attached to the panel portion. Fig. 2 is a view showing a configuration example of one of the ones shown in Fig. 1. Use the relevant discharge point of the high-voltage system at both ends. Figure 3 is the relevant lighting device.
'/;IL器部而以1片其 置的電路圖。'/; The IL part is a circuit diagram of one piece.
板構成之兩端高壓系統之放電燈點燈裝 27 200913788 圖6係表示本發明之第 構成的圖。 圖7係表示本發明之第 構成的圖。 圖8係表示本發明之第 構成的圖。 圖9係表示本發明之第 構成的圖。 圖1 〇係表示本發明之第 構成的圖。 圖11係表示本發明之第 構成的圖。 圖12係表示本發明之第 構成的圖。 圖13係表示本發明之第 構成的圖。 圖1 4係表示本發明之第 1實施例之放電燈點燈裝置之 2實施例之放電燈點燈裝置之 3實施例之放電燈點燈裝置之 4實施例之放電燈點燈裝置之 5實施例之放電燈點燈裝置之 6實施例之放電燈點燈裝置之 7實施例之放電燈點燈裝置之 8實施例之放電燈點燈裝置之 9實施例之放電燈點燈裝置之 構成的圖。 圖15係表示本發明之第1〇實施例之放電燈點燈裝置 之構成的圖。 圖16係表示本發明之第11實施例之放電燈點燈裝置 之構成的圖。 【主要元件符號說明】 l la，lb，lc，id :放電燈 28 200913788 3a, 3b, 3c, 3d :電流檢測電路 5a, 5b :電壓檢測電路 7a, 7b :修正量調整電路 9a, 9b，9c，9d，9f :加減法電路 9e :加法電路 1 la, 1 lb :電流檢測電路 C1，C2,C3,C4:電壓檢測電容器 C5, C6 ：寄生電容 C7, C8 ：電容器 C11,C12,C13,C14:電壓檢測電容器 C15, C16 :寄生電容 D 1〜D 1 0 :二極體Discharge lamp lighting device for high-voltage system at both ends of the plate 27 200913788 Fig. 6 is a view showing the first configuration of the present invention. Fig. 7 is a view showing the first configuration of the present invention. Fig. 8 is a view showing the first configuration of the present invention. Fig. 9 is a view showing the first configuration of the present invention. Fig. 1 is a view showing a first configuration of the present invention. Fig. 11 is a view showing the first configuration of the present invention. Fig. 12 is a view showing the first configuration of the present invention. Fig. 13 is a view showing the first configuration of the present invention. Fig. 14 is a view showing a discharge lamp lighting device of a fourth embodiment of a discharge lamp lighting device according to a third embodiment of the discharge lamp lighting device according to the first embodiment of the present invention; Embodiment of the discharge lamp lighting device of the embodiment of the discharge lamp lighting device of the embodiment of the discharge lamp lighting device of the embodiment of the discharge lamp lighting device of the eighth embodiment of the discharge lamp lighting device Figure. Fig. 15 is a view showing the configuration of a discharge lamp lighting device according to a first embodiment of the present invention. Figure 16 is a view showing the configuration of a discharge lamp lighting device according to an eleventh embodiment of the present invention. [Description of main component symbols] l la, lb, lc, id: discharge lamp 28 200913788 3a, 3b, 3c, 3d : current detection circuit 5a, 5b: voltage detection circuit 7a, 7b: correction amount adjustment circuit 9a, 9b, 9c , 9d, 9f : addition and subtraction circuit 9e : addition circuit 1 la, 1 lb : current detection circuit C1, C2, C3, C4: voltage detection capacitor C5, C6: parasitic capacitance C7, C8: capacitor C11, C12, C13, C14 : Voltage detection capacitor C15, C16: Parasitic capacitance D 1~D 1 0 : Diode
Pl，P2 : —次繞組 R1〜R12 :電阻 S1，S3 :第1二次繞組 S2, S4 :第2二次繞組 ΤΙ, T2, T2a, T2b :變壓器 29Pl, P2: - secondary winding R1 ~ R12: resistance S1, S3: first secondary winding S2, S4: second secondary winding ΤΙ, T2, T2a, T2b: transformer 29