公开(公告)号：US08368323B2

公开(公告)日：2013-02-05

申请号：US12557179

申请日：2009-09-10

申请人： Hirokazu Ohtake ,  Hiroshi Terasaka ,  Mitsuhiko Nishiie ,  Takuro Hiramatsu

发明人： Hirokazu Ohtake ,  Hiroshi Terasaka ,  Mitsuhiko Nishiie ,  Takuro Hiramatsu

IPC分类号： G05F1/00 ,  H05B37/02 ,  H05B39/04 ,  H05B41/36

摘要： In a power supply unit, if a dimmer rate is changed within a range of k1, k2, . . . k7 by a dimmer signal k of a dimmer signal generator, light-emitting diodes are controlled to be lighted by a constant current characteristic in an area where the dimmer rate is small according to a load characteristic corresponding to the dimmer rates k1, k2, . . . k7. As the dimmer rate becomes larger, a tendency of a constant voltage characteristic is gradually strengthened from a constant current characteristic so that the light-emitting diodes are lighted at the larger dimmer rate.

公开(公告)号：US08513902B2

公开(公告)日：2013-08-20

申请号：US12557179

申请日：2009-09-10

申请人： Hirokazu Ohtake ,  Hiroshi Terasaka ,  Mitsuhiko Nishiie ,  Takuro Hiramatsu

发明人： Hirokazu Ohtake ,  Hiroshi Terasaka ,  Mitsuhiko Nishiie ,  Takuro Hiramatsu

IPC分类号： G05F1/00 ,  H05B37/02 ,  H05B39/04 ,  H05B41/36

CPC分类号： H05B33/0815 ,  H05B33/0851

摘要： In a power supply unit, if a dimmer rate is changed within a range of k1, k2, . . . k7 by a dimmer signal k of a dimmer signal generator, light-emitting diodes are controlled to be lighted by a constant current characteristic in an area where the dimmer rate is small according to a load characteristic corresponding to the dimmer rates k1, k2, . . . k7. As the dimmer rate becomes larger, a tendency of a constant voltage characteristic is gradually strengthened from a constant current characteristic so that the light-emitting diodes are lighted at the larger dimmer rate.

摘要翻译： 在电源单元中，如果在k1，k2，...的范围内改变调光器速率。 。 。 k7通过调光信号发生器的调光信号k，根据对应于调光率k1，k2的负载特性，在调光率较小的区域中，通过恒定电流特性来控制发光二极管。 。 。 k7。 随着调光率变大，从恒定电流特性逐渐增强恒定电压特性的趋势，使得发光二极管以较大的调光速率点亮。

公开(公告)号：US08476840B2

公开(公告)日：2013-07-02

申请号：US12547969

申请日：2009-08-26

申请人： Noriyuki Kitamura ,  Keiichi Shimizu ,  Hiroshi Terasaka ,  Tomokazu Usami

发明人： Noriyuki Kitamura ,  Keiichi Shimizu ,  Hiroshi Terasaka ,  Tomokazu Usami

IPC分类号： H05B37/02

CPC分类号： H05B33/0815 ,  H05B33/0803 ,  H05B33/0818 ,  H05B33/0848 ,  Y02B20/347

摘要： An LED lighting device includes light emitting diode, a current control circuit having a first series circuit of first and second switching elements, a second series circuit of third and fourth switching elements, and a condenser, which is configured so that the first and second series circuits are parallel connected and the condenser is connected between a connection point of the first and second switching elements and a connection point of the third and fourth switching elements, and a control circuit for alternatively on-off controlling a pair of the first and fourth switching elements and a pair of the second and third switching elements.

摘要翻译： LED照明装置包括发光二极管，具有第一和第二开关元件的第一串联电路的电流控制电路，第三和第四开关元件的第二串联电路和冷凝器，其被配置为使得第一和第二串联 电路并联，并且电容器连接在第一和第二开关元件的连接点和第三和第四开关元件的连接点之间，以及控制电路，用于交替地开关控制一对第一和第四开关 元件和一对第二和第三开关元件。

公开(公告)号：US06784626B2

公开(公告)日：2004-08-31

申请号：US10455781

申请日：2003-06-06

申请人： Hirokazu Otake ,  Koji Takahashi ,  Hiroshi Terasaka ,  Hideo Kozuka

发明人： Hirokazu Otake ,  Koji Takahashi ,  Hiroshi Terasaka ,  Hideo Kozuka

IPC分类号： H05B3702

CPC分类号： H05B41/3925 ,  H05B41/2827

摘要： 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.

摘要翻译： 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。