公开(公告)号：US09470962B2

公开(公告)日：2016-10-18

申请号：US14529722

申请日：2014-10-31

申请人： SEIKO EPSON CORPORATION

发明人： Keishi Kimura

IPC分类号： G03B21/20 ,  H05B41/288 ,  G03B35/16 ,  H04N9/31 ,  H04N13/04 ,  G02B27/22 ,  H05B41/16 ,  H05B41/24

CPC分类号： G03B21/2053 ,  G02B27/2264 ,  G03B35/16 ,  H04N9/3155 ,  H04N13/341 ,  H04N13/363 ,  H04N13/398 ,  H05B41/16 ,  H05B41/24 ,  H05B41/2887 ,  Y02B20/202

摘要： A discharge lamp driving device includes: a direct-current power supply section (a power supply section) that controls a current of power to be supplied to a discharge lamp from input power, and outputs the current; a voltage detecting section that detects a lamp voltage (a drive voltage) of the discharge lamp; and a control section that controls a modulation factor of a lamp current (a drive current) on which amplitude modulation has been performed, the lamp current (the drive current) which is supplied to the discharge lamp from the direct-current power supply section (the power supply section), in accordance with the detected lamp voltage (drive voltage) of the discharge lamp.

摘要翻译： 放电灯驱动装置包括：直流电源部（电源部），其从输入电力控制向放电灯供电的电力电流，并输出电流; 电压检测部，其检测放电灯的灯电压（驱动电压）; 以及控制部分，其控制已经进行了幅度调制的灯电流（驱动电流）的调制因数，从直流电源部分提供给放电灯的灯电流（驱动电流） 电源部），根据检测到的放电灯的灯电压（驱动电压）。

公开(公告)号：US09176366B2

公开(公告)日：2015-11-03

申请号：US13667508

申请日：2012-11-02

申请人： SEIKO EPSON CORPORATION

发明人： Keishi Kimura ,  Kenichi Shioiri

IPC分类号： G03B21/16 ,  G03B21/00 ,  H04N9/31

CPC分类号： G03B21/16 ,  G03B21/006 ,  H04N9/3144

摘要： A projector according to an embodiment of the invention can measure the temperature of an object to be cooled accurately with a simple configuration and perform accurate cooling control. The projector includes a power-supply unit, a ballast unit having a ballast control circuit and a photocoupler, and a control unit. The power-supply unit includes a temperature detection element generating temperature information indicating the temperature inside the power-supply unit. The ballast control circuit controls a constant-current control circuit and the like based on the control information transmitted from the control unit via the photocoupler and transmits temperature data based on the temperature information to the control unit via the photocoupler. The control unit includes a projector control circuit performing cooling control on the power-supply unit based on the temperature data.

摘要翻译： 根据本发明的实施例的投影仪可以以简单的配置精确地测量要冷却的物体的温度并执行精确的冷却控制。 投影机包括电源单元，具有镇流器控制电路和光电耦合器的镇流器单元和控制单元。 电源单元包括产生指示电源单元内的温度的温度信息的温度检测元件。 镇流器控制电路基于从控制单元经由光耦合器发送的控制信息来控制恒流控制电路等，并且经由光电耦合器将温度信息基于温度信息发送到控制单元。 控制单元包括投影仪控制电路，其基于温度数据对电源单元进行冷却控制。