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    • 8. 发明授权
    • Electronic ballast and lighting fixture
    • 电子镇流器和照明灯具
    • US06784626B2
    • 2004-08-31
    • US10455781
    • 2003-06-06
    • Hirokazu OtakeKoji TakahashiHiroshi TerasakaHideo Kozuka
    • Hirokazu OtakeKoji TakahashiHiroshi TerasakaHideo Kozuka
    • H05B3702
    • H05B41/3925H05B41/2827
    • An electronic ballast comprises a direct current power supply configured to provide a direct current voltage. A switching circuit, including first and second switching elements, is connected in parallel with the direct current power supply, and is configured to convert the direct current voltage to a high-frequency alternating current. A load circuit, including a discharge lamp, a resonance inductor, and a resonance capacitor, is operated by the high-frequency alternating current. A driving circuit is arranged between the switching circuit and the load circuit. A driving circuit is provided with feedback windings magnetically connected to a detecting winding of the current transformer. A driving circuit is configured to control a switching frequency of the first and second switching elements according to a detected current of the detecting winding. A magnetic energy control means is configured to control a magnetic energy of the current transformer. A current detecting means detects an average current either an output current of the direct current power supply or a current of the switching circuit. A current control means is configured to control the magnetic energy control means, and to fix the average current to a designated value.
    • 电子镇流器包括被配置为提供直流电压的直流电源。包括第一和第二开关元件的开关电路与直流电源并联连接,并且被配置为将直流电压转换为 高频交流电。包括放电灯,谐振电感和谐振电容的负载电路由高频交流电工作。 驱动电路设置在开关电路和负载电路之间。驱动电路设置有与电流互感器的检测绕组磁连接的反馈绕组。 驱动电路被配置为根据检测绕组的检测电流来控制第一和第二开关元件的开关频率。磁能控制装置被配置为控制电流互感器的磁能。电流检测装置检测 平均电流是直流电源的输出电流或开关电路的电流。电流控制装置被配置为控制磁能控制装置,并将平均电流固定为指定值。
    • 9. 发明授权
    • Lighting device and luminaire
    • 照明设备和灯具
    • US08643307B2
    • 2014-02-04
    • US13404825
    • 2012-02-24
    • Naoko IwaiMasahiko KamataHiroshi TerasakaHitoshi KawanoYosuke Saito
    • Naoko IwaiMasahiko KamataHiroshi TerasakaHitoshi KawanoYosuke Saito
    • H05B37/02
    • H05B33/089
    • According to one embodiment, a lighting device includes a control circuit that includes a threshold for a case where a pair of the illumination lamps are connected in series between a positive output end and a negative output end of a power supply circuit, and a threshold for a case where one illumination lamp is connected between the positive output end and the negative output end of the power supply circuit. The control circuit determines the connected lamp number of the illumination lamps to a direct-current power supply device based on a voltage between the positive output end and the negative output end of the power supply circuit and a voltage between a non-potential connection end and the positive output end or the negative output end, and selects the threshold corresponding to the connected lamp number to control the direct-current power supply device.
    • 根据一个实施例,照明装置包括控制电路,该控制电路包括在一对照明灯串联连接在电源电路的正输出端和负输出端之间的阈值,阈值用于 一个照明灯连接在电源电路的正输出端和负输出端之间的情况。 控制电路基于电源电路的正输出端和负输出端之间的电压以及非电位连接端与电位连接端之间的电压来确定照明灯与直流电源装置的连接灯号 正输出端或负输出端,并选择与连接的灯号相对应的阈值来控制直流电源装置。