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公开(公告)号：US10076018B2
公开(公告)日：2018-09-11
申请号：US15060958
申请日：2016-03-04
发明人： Masaru Kono
IPC分类号： H04N9/31 , H05B41/288
CPC分类号： H05B41/2883 , H04N9/3105 , H04N9/3123 , H04N9/3155 , H04N9/3179 , H04N9/3197 , H05B41/2887 , Y02B20/202
摘要： A discharge lamp driving device includes a discharge lamp driving unit; and a control unit, in which the control unit controls the discharge lamp driving unit so that a first driving current which causes a first electrode to serve as an anode and a second driving current which causes a second electrode to serve as an anode are alternately supplied to the discharge lamp, a period of the first driving current is changed according to a periodic first pattern, and a period of the second driving current is changed according to a periodic second pattern, in which the first pattern and the second pattern are patterns in which the length of the periods over which the respective driving current is supplied decrease over time within each cycle of the pattern, and in which the cycle of the first pattern is phase-shifted relative to the cycle of the second pattern.
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2.发明授权公开(公告)号：US10018899B2
公开(公告)日：2018-07-10
申请号：US15656225
申请日：2017-07-21
发明人： Masaru Kono
IPC分类号： G03B21/20 , H05B41/288 , H05B41/392 , G03B21/00 , G03B33/12 , H04N9/31
CPC分类号： G03B21/2026 , G03B21/006 , G03B21/2053 , G03B21/208 , G03B33/12 , H04N9/3105 , H04N9/3155 , H05B41/2887 , H05B41/3928 , Y02B20/202
摘要： A discharge lamp driver includes a discharge lamp driving unit configured to supply drive current to a discharge lamp and a control unit configured to control the discharge lamp driving unit. The drive current has a modulation drive period in which a first period in which AC current having a frequency higher than 1 kHz is supplied and a second period in which DC current is supplied are alternately repeated. In the modulation drive period, the control unit periodically changes length of a first DC period included in the second periods and in which DC current of a first polarity is supplied, and length of a second DC period included in the second periods and in which DC current of a second polarity is supplied, and increases one of the length of the first DC period and the length of the second DC period while decrease the other one.
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公开(公告)号：US10015870B2
公开(公告)日：2018-07-03
申请号：US15401191
申请日：2017-01-09
申请人： Jun Hu , Jian Huang
发明人： Jun Hu
IPC分类号： H05B41/288 , H05B41/28
CPC分类号： H05B41/2883 , H05B41/2887 , Y02B20/202
摘要： The present disclosure relates to a light attenuation controlling apparatus for a CDM lamp, comprising: a full-bridge inverter as a power source to supply an output to the CDM lamp; a driving circuit for driving the full-bridge inverter; a single-chip microcomputer connected to the driving circuit; a tube voltage sensing module, one end of which is connected to the full-bridge inverter so as to sense a tube voltage currently outputted by the full-bridge inverter to the CDM lamp, and through the other end of which the tube voltage of the CDM lamp is outputted to the single-chip microcomputer. The present disclosure provides a novel light attenuation controlling apparatus for a CDM lamp, which can effectively control light attenuation of the CDM lamp by constantly regulating the output of the full-bridge inverter, thereby enhancing duration of the CDM lamp.
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公开(公告)号：US09939717B2
公开(公告)日：2018-04-10
申请号：US15387283
申请日：2016-12-21
发明人： Tomoya Mizutani , Takaaki Ozawa
IPC分类号： G03B21/16 , G03B21/20 , H04N9/31 , H05B41/292 , G03B21/00 , G03B33/12 , H05B41/288
CPC分类号： G03B21/16 , G03B21/006 , G03B21/2026 , G03B21/2046 , G03B21/2053 , G03B21/2066 , G03B33/12 , H04N9/3155 , H05B41/2885 , H05B41/2887 , H05B41/292 , Y02B20/202
摘要： A projector which configured to project a horizontally long image and a vertically long image, includes a cooling unit configured to cool a discharge lamp according to an installation attitude of the projector, a detection unit configured to detect the installation attitude, and a controller configured to control a discharge lamp driving unit and the cooling unit, in which the installation attitude includes a first attitude for projecting the horizontally long image and a second attitude for projecting the vertically long image, and in which the controller is configured to put out the discharge lamp in a case where the installation attitude detected by the detection unit is a third attitude which is different from both of the first attitude and the second attitude.
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5.发明申请公开(公告)号：US20170277032A1
公开(公告)日：2017-09-28
申请号：US15448311
申请日：2017-03-02
发明人： Tetsuo TERASHIMA
CPC分类号： G03B21/2053 , G03B21/005 , G03B21/2026 , H05B41/2887 , H05B41/36 , Y02B20/202
摘要： A discharge lamp driving device includes a discharge lamp driving section configured to supply a driving current to a discharge lamp, a control section configured to control the discharge lamp driving section, and a voltage detecting section configured to detect an inter-electrode voltage. The control section supplies a driving current including a first alternating current when the inter-electrode voltage is equal to or higher than a first voltage, supplies a driving current including a second alternating current having a frequency which is lower than a frequency of the first alternating current when the inter-electrode voltage is lower than the first voltage and equal to or higher than a second voltage lower than the first voltage, and supplies a driving current including a third alternating current having a frequency which is higher than the frequency of the first alternating current when the inter-electrode voltage is lower than the second voltage.
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公开(公告)号：US09729839B2
公开(公告)日：2017-08-08
申请号：US14982522
申请日：2015-12-29
发明人： Osamu Saito
IPC分类号： H04N9/31 , H05B41/288
CPC分类号： H04N9/3155 , H05B41/2887 , Y02B20/202
摘要： A discharge lamp drive device includes a resonant circuit section connected to a discharge lamp, a power conversion section configured to convert direct-current power into alternating-current power, and supply the discharge lamp with the alternating-current power via the resonant circuit section, and a control section configured to supply the discharge lamp with the alternating-current power having a first frequency and a second frequency higher than the first frequency in a lighting start period until the discharge lamp reaches a steady lighting state, the first frequency is a frequency for causing a resonance of the resonant circuit section, and the second frequency is a quasi-resonant frequency.
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公开(公告)号：US09603228B2
公开(公告)日：2017-03-21
申请号：US14940295
申请日：2015-11-13
发明人： Tsuyoshi Umemoto , Takafumi Toda
IPC分类号： H05B41/288 , H05B41/292 , H05B41/38
CPC分类号： H05B41/2887 , H05B41/2928 , H05B41/388 , Y02B20/202 , Y02B20/204
摘要： A discharge lamp lighting apparatus includes an inverter circuit supplying an AC voltage to a discharge lamp and a resonant circuit that increases a supply voltage supplied to the discharge lamp. The inverter circuit is driven using a first frequency including a resonant frequency of the resonant circuit during a first period in which breakdown and a glow discharge are generated, driven using a second frequency including a resonant frequency of the resonant circuit, lower than the first frequency, during a second period in which an arc discharge is generated, and driven using a third frequency lower than the second frequency, during a third period. Further, a dead time is set in which both of a high-side switching device and a low-side switching device are turned off so that the dead time is longer in the second period than in the first period and the third period.
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公开(公告)号：US20160323984A1
公开(公告)日：2016-11-03
申请号：US15105742
申请日：2014-09-19
发明人： Tomohiro OKUDA , Minoru FUKUDA
IPC分类号： H05B41/39 , H01J61/073 , H01J61/30 , H01J61/82 , H05B41/288 , G03B21/20
CPC分类号： H05B41/39 , G03B21/16 , G03B21/2026 , G03B21/2053 , H01J61/0732 , H01J61/26 , H01J61/302 , H01J61/822 , H01J61/86 , H05B41/2887 , H05B41/2888 , Y02B20/202
摘要： A lighting apparatus of a discharge lamp is provided with a power supply section which supplies AC current to the discharge lamp, a power control section which outputs a signal concerning a control power value to the power supply section, and a pulse generating section which outputs a pulse wave to the power supply section. The power control section carries out a control of differentiating the control power value at a first period and the control power value at a second period, in a direction that a difference is reduced between average light intensities or average powers of the discharge lamp at the first period and the second period, in comparison with a case where the control power value is identical at the first period and the second period.
摘要翻译： 放电灯的照明装置设置有向放电灯供给AC电流的电源部，向电源部输出与控制功率值有关的信号的电力控制部，以及输出 脉冲波到电源部分。 功率控制部进行使第一时间段的控制功率值和第二时间段的控制功率值在第一时间段的平均光强度或放电灯的平均功率之间的差减小的方向上进行区别的控制 与第一期间和第二期间的控制电力值相同的情况进行比较。
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9.发明申请公开(公告)号：US20160286179A1
公开(公告)日：2016-09-29
申请号：US14982522
申请日：2015-12-29
发明人： Osamu Saito
IPC分类号： H04N9/31 , H05B41/04 , H05B41/288
CPC分类号： H04N9/3155 , H05B41/2887 , Y02B20/202
摘要： A discharge lamp drive device includes a resonant circuit section connected to a discharge lamp, a power conversion section configured to convert direct-current power into alternating-current power, and supply the discharge lamp with the alternating-current power via the resonant circuit section, and a control section configured to supply the discharge lamp with the alternating-current power having a first frequency and a second frequency higher than the first frequency in a lighting start period until the discharge lamp reaches a steady lighting state, the first frequency is a frequency for causing a resonance of the resonant circuit section, and the second frequency is a quasi-resonant frequency.
摘要翻译： 放电灯驱动装置包括连接到放电灯的谐振电路部分，电力转换部分，被配置为将直流电转换为交流电力，并且经由谐振电路部分向交流电供给放电灯， 以及控制部，被配置为在放电灯达到稳定点亮状态的点亮开始时段内向放电灯提供具有高于第一频率的第一频率和第二频率的交流电力，第一频率是频率 用于引起谐振电路部分的谐振，而第二频率是准谐振频率。
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公开(公告)号：US20160262247A1
公开(公告)日：2016-09-08
申请号：US15014216
申请日：2016-02-03
发明人： Kazuya KATO
IPC分类号： H05B41/292 , H01J61/54 , H05B41/288
CPC分类号： H05B41/2926 , H01J61/54 , H05B41/2887 , Y02B20/202
摘要： The lighting device of one aspect according to the present disclosure calculates, based on a voltage value of an AC voltage applied to a discharge lamp and a current value of AC current flowing through the discharge lamp, a first power value defined as a value of power supplied to the discharge lamp in a first half period of the AC voltage and a second power value defined as a value of power supplied to the discharge lamp in a second half period of the AC voltage. The lighting device determines that a ground fault has occurred, when an imbalance state in which a difference between the first power value and the second power value is equal to or greater than a threshold value continues for a predetermined time period.
摘要翻译： 根据本公开的一个方面的照明装置基于施加到放电灯的AC电压的电压值和流过放电灯的AC电流的电流值来计算定义为功率值的第一功率值 在交流电压的前半个周期中提供给放电灯，以及在交流电压的后半个周期中被定义为提供给放电灯的功率值的第二功率值。 当第一功率值和第二功率值之间的差等于或大于阈值的不平衡状态持续预定时间段时，照明装置确定发生接地故障。
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