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    • 7. 发明授权
    • LED lighting device
    • LED照明装置
    • US08575857B2
    • 2013-11-05
    • US13159777
    • 2011-06-14
    • Hiroyuki SakoKatsunobu HamamotoTakeshi SaitoHiroki NakagawaHiroshi Terasaka
    • Hiroyuki SakoKatsunobu HamamotoTakeshi SaitoHiroki NakagawaHiroshi Terasaka
    • H05B37/02
    • H05B33/089H05B33/0815Y02B20/347Y02B20/348
    • The LED lighting device includes a lighting circuit unit, a current detecting unit, a voltage detecting unit, and a control unit. The lighting circuit unit is adapted in use to be connected to a lamp socket to be connected to a LED lamp, and is configured to provide an output voltage in the form of a DC voltage to the lamp socket in a manner to turn on the LED lamp. The current detecting unit is configured to detect an output current which is caused by the output voltage and is supplied from said lighting circuit unit to said lamp socket. The voltage detecting unit is configured to detect the output voltage of said lighting circuit unit. The control unit configured to control the lighting circuit unit. The control unit is configured to perform constant-current control of control the lighting circuit unit in a manner to regulate the output voltage such that the output current is identical to a target value while keeping the output voltage not higher than a maximum-load voltage, when the output current detected by the current detecting unit is not less than a predetermined threshold value, and is configured to perform no-load control of controlling the lighting circuit unit in a manner to regulate the output voltage such that the output voltage is kept identical to a no-load voltage higher than the maximum-load voltage, when the output current detected by the current detecting unit is less than the predetermined threshold value.
    • LED照明装置包括照明电路单元,电流检测单元,电压检测单元和控制单元。 照明电路单元适于连接到要连接到LED灯的灯座,并且被配置为以将LED的形式的DC电压的形式的LED输出电压提供给灯插座 灯。 电流检测单元被配置为检测由输出电压引起的并从所述点亮电路单元提供给所述灯座的输出电流。 电压检测单元被配置为检测所述点亮电路单元的输出电压。 所述控制单元被配置为控制所述点亮电路单元。 控制单元被配置为以保持输出电压不高于最大负载电压的方式对调节输出电压进行控制的恒流控制,使得输出电流与目标值相同, 当由电流检测单元检测到的输出电流不小于预定阈值时,并且被配置为以调节输出电压的方式执行控制点亮电路单元的空载控制,使得输出电压保持相同 当由电流检测单元检测到的输出电流小于预定阈值时,该空载电压高于最大负载电压。
    • 8. 发明授权
    • Power supply device
    • 电源设备
    • US5771159A
    • 1998-06-23
    • US891060
    • 1997-07-10
    • Hiroyuki SakoKoji NishiuraMasahiro Yamanaka
    • Hiroyuki SakoKoji NishiuraMasahiro Yamanaka
    • H02M1/00H02M1/42H02M7/48H05B41/28H05B41/282H02M5/44
    • H02M1/425H02M7/48H05B41/28H05B41/2825H02M2007/4815Y02B70/126Y02B70/1441
    • A power supply device in which an inverter circuit is supplied with power directly from a rectification circuit, the inverter circuit has a pair of switching elements connected in series with each other and connected between both ends of the rectification circuit through an impedance element, a series circuit of the impedance element, two capacitors and an inductor is connected in parallel to one of the switching elements of the inverter circuit connected to positive polarity one of the both ends of the rectification circuit, a load is connected across one of the capacitor, a valley filling circuit receives an output of the inverter circuit through a diode provided in the valley filling circuit and supplies it to a power supply capacitor provided therein and, when a DC output voltage of the rectification circuit drops, the valley filling circuit supplies power to the inverter circuit via the power supply capacitor and another diode provided therein. Thereby, fluctuations in a current supplied to the load can be effectively reduced.
    • 一种电源装置,其中逆变器电路从整流电路直接供电,逆变器电路具有彼此串联连接的一对开关元件,并通过阻抗元件串联连接在整流电路的两端之间 阻抗元件的电路,两个电容器和电感器并联连接到与整流电路两端的正极连接的逆变器电路的一个开关元件,负载连接在电容器之一上,一个 谷填充电路通过设置在谷状填充电路中的二极管接收逆变器电路的输出,并将其提供给设置在其中的电源电容器,并且当整流电路的直流输出电压下降时,谷底充电电路向 逆变器电路经由电源电容器和设置在其中的另一二极管。 由此,可以有效地降低供给负载的电流的波动。