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    • 1. 发明申请
    • Discharge Lamp Lighting Device, and Lighting Equipment and Lighting System Using the Device
    • 放电灯照明装置,照明设备及照明系统
    • US20080030143A1
    • 2008-02-07
    • US11577891
    • 2005-09-16
    • Takeshi GorikiKoji NoroNoriyuki FukumoriKenichi Fukuda
    • Takeshi GorikiKoji NoroNoriyuki FukumoriKenichi Fukuda
    • H05B37/02G01R31/00
    • H05B41/2923G01R31/028G01R31/24H02M7/48H05B41/2886H05B41/2926Y02B20/202Y02B20/208
    • A level shift IC (3b) of a power supply/shutoff section (3) is operable, when a shutoff signal (Sa) is input from a timer circuit (8) for a time T during an ON state of a discharge lamp (7), to turn off a MOSFET (3a) so as to shut off power supply to a smoothing capacitor (4). When a detection signal (Sb) of a capacitor voltage is lowered to a value less than a reference voltage Vr1 during input of the shutoff signal (Sa), an output of a comparator (10) is changed from an H level to an L level in an inverted manner. In conjunction with this change, respective outputs of an auxiliary control circuit (12) and a NOT element (12a, 12b) are changed from an L level to an H level in an inverted manner. As a result, a current flows from the NOT element (12a) to an LED (13b) through a resistor (13a) to turn on the LED (13b). Thus, a life end of the smoothing capacitor 4 is annunciated, and a main control circuit (6) is operable to suppress an output of an inverter main circuit (5).
    • 当在放电灯的导通状态期间从定时器电路(8)输入一截止信号(Sa)一段时间T时,可操作电源/截止部分(3)的电平移位IC(3b) 7),关断MOSFET(3a),以便切断对平滑电容器(4)的电源。 当在关断信号(Sa)的输入期间电容器电压的检测信号(Sb)降低到小于参考电压Vr 1的值时,比较器(10)的输出从H电平变为L 水平反转。 结合该变化,辅助控制电路(12)和NOT元件(12a,12b)的各个输出以反相方式从L电平变为H电平。 结果,电流通过电阻器(13a)从NOT元件(12a)流向LED(13b),以接通LED(13b)。 因此,平滑电容器4的寿命结束,并且主控制电路(6)可操作以抑制逆变器主电路(5)的输出。
    • 4. 发明授权
    • Discharge lamp lighting device, and lighting equipment and lighting system using the device
    • 放电灯照明装置,照明设备及照明系统使用该装置
    • US07557523B2
    • 2009-07-07
    • US11577891
    • 2005-09-16
    • Takeshi GorikiKoji NoroNoriyuki FukumoriKenichi Fukuda
    • Takeshi GorikiKoji NoroNoriyuki FukumoriKenichi Fukuda
    • H05B41/36
    • H05B41/2923G01R31/028G01R31/24H02M7/48H05B41/2886H05B41/2926Y02B20/202Y02B20/208
    • A level shift IC (3b) of a power supply/shutoff section (3) is operable, when a shutoff signal (Sa) is input from a timer circuit (8) for a time T during an ON state of a discharge lamp (7), to turn off a MOSFET (3a) so as to shut off power supply to a smoothing capacitor (4). When a detection signal (Sb) of a capacitor voltage is lowered to a value less than a reference voltage Vr1 during input of the shutoff signal (Sa), an output of a comparator (10) is changed from an H level to an L level in an inverted manner. In conjunction with this change, respective outputs of an auxiliary control circuit (12) and a NOT element (12a, 12b) are changed from an L level to an H level in an inverted manner. As a result, a current flows from the NOT element (12a) to an LED (13b) through a resistor (13a) to turn on the LED (13b). Thus, a life end of the smoothing capacitor 4 is annunciated, and a main control circuit (6) is operable to suppress an output of an inverter main circuit (5).
    • 当在放电灯(7)的导通状态期间从定时器电路(8)输入关闭时间T的关闭信号(Sa)时,电源/截止部分(3)的电平转换IC(3b) ),以关断MOSFET(3a)以便切断对平滑电容器(4)的电源。 当在关断信号(Sa)的输入期间电容器电压的检测信号(Sb)降低到小于参考电压Vr1的值时,比较器(10)的输出从H电平变为L电平 以倒置的方式。 结合该变化,辅助控制电路(12)和NOT元件(12a,12b)的各个输出以反相方式从L电平变为H电平。 结果,电流通过电阻器(13a)从NOT元件(12a)流向LED(13b),以导通LED(13b)。 因此,平滑电容器4的寿命结束,并且主控制电路(6)可操作以抑制逆变器主电路(5)的输出。