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公开(公告)号：US11343885B2
公开(公告)日：2022-05-24
申请号：US17410845
申请日：2021-08-24
发明人： Minoru Fukuda
IPC分类号： H05B41/28 , H05B41/392
摘要： A light source device includes a light source unit having a dielectric barrier discharge lamp and a lighting circuit. The lighting circuit includes a transformer; a switching element; a controller for the switching element; a detector that detects current flowing through or voltage on a primary or a secondary side of the transformer; and a determination unit. The controller is configured to enable performing a steady-state operation of controlling ON/OFF of the switching element at a steady-state operation frequency (f1) to steadily light the dielectric barrier discharge lamp; and a determination operation of controlling ON/OFF of the switching element at a determination operation frequency (f2) higher than the steady-state operation frequency (f1), and the determination unit determines whether or not to stop the lighting operation based on the current or the voltage detected by the detector when the controller controls the switching element at the determination operation frequency (f2).
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公开(公告)号：US09332623B2
公开(公告)日：2016-05-03
申请号：US14417764
申请日：2013-07-10
发明人： Minoru Fukuda , Atsushi Imamura
IPC分类号： H01J13/48 , H05B41/34 , H05B41/288
CPC分类号： H05B41/34 , H05B41/2887 , Y02B20/202
摘要： A high-voltage discharge lamp illumination device comprises a pulse generation part which generates pulse waves, and a power supply part which receives a DC voltage and converts the DC voltage into the AC current in correspondence to a frequency of the pulse waves so as to supply the AC current to the lamp. The pulse generation part repeats a cycle of outputting a first pulse wave over a first period, and thereafter outputting a second pulse wave having a lower frequency than the first pulse wave over a second period shorter than the first period. The pulse generation part returns to the cycle after outputting a third pulse wave having a frequency which is further lower than the second pulse wave in place of the second pulse wave, at a predetermined timing.
摘要翻译： 高电压放电灯照明装置包括产生脉冲波的脉冲发生部分，以及电源部分，其接收直流电压，并将该直流电压转换为对应于脉冲波的频率的交流电流，从而供应 交流电流到灯。 脉冲生成部重复在第一期间输出第一脉波的循环，之后在比第一期间短的第二期间输出比第一脉波低的第二脉波。 脉冲发生部在预定的定时输出具有比第二脉波更低的频率的第三脉波作为代替第二脉波的周期。
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公开(公告)号：US10237959B2
公开(公告)日：2019-03-19
申请号：US16161491
申请日：2018-10-16
IPC分类号： H05B41/288 , H05B41/36 , H01J61/12 , H01J61/04 , H01J61/00
摘要： A discharge lamp lighting device includes a control unit adapted to control a frequency of the AC electric current supplied to a discharge lamp by a feeding unit, in different manners within a first term and a second term which are alternately repeated, the control unit is adapted to control the frequency of the AC electric current such that, within the first term, the frequency of the AC electric current becomes at least one frequency out of plural set frequencies, and is further adapted to control the frequency of the AC electric current, based on a predetermined frequency and an electric current within the previous first term, such that, within the second term, the frequency of the AC electric current becomes a frequency lower than this predetermined frequency.
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公开(公告)号：US20150201481A1
公开(公告)日：2015-07-16
申请号：US14417764
申请日：2013-07-10
发明人： Minoru Fukuda , Atsushi Imamura
IPC分类号： H05B41/34 , H05B41/288
CPC分类号： H05B41/34 , H05B41/2887 , Y02B20/202
摘要： A high-voltage discharge lamp illumination device comprises a pulse generation part which generates pulse waves, and a power supply part which receives a DC voltage and converts the DC voltage into the AC current in correspondence to a frequency of the pulse waves so as to supply the AC current to the lamp. The pulse generation part repeats a cycle of outputting a first pulse wave over a first period, and thereafter outputting a second pulse wave having a lower frequency than the first pulse wave over a second period shorter than the first period. The pulse generation part returns to the cycle after outputting a third pulse wave having a frequency which is further lower than the second pulse wave in place of the second pulse wave, at a predetermined timing.
摘要翻译： 高电压放电灯照明装置包括产生脉冲波的脉冲发生部分，以及电源部分，其接收直流电压，并将该直流电压转换为对应于脉冲波的频率的交流电流，从而供应 交流电流到灯。 脉冲生成部重复在第一期间输出第一脉波的循环，之后在比第一期间短的第二期间输出比第一脉波低的第二脉波。 脉冲发生部在预定的定时输出具有比第二脉波更低的频率的第三脉波作为代替第二脉波的周期。
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