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    • 8. 发明申请
    • SEMICONDUCTOR LIGHT SOURCE LIGHTING CIRCUIT
    • 半导体光源照明电路
    • US20130278165A1
    • 2013-10-24
    • US13856492
    • 2013-04-04
    • Satoshi KikuchiTakanori NambaMasayasu Ito
    • Satoshi KikuchiTakanori NambaMasayasu Ito
    • H05B33/08
    • H05B33/0815H05B33/0848
    • A semiconductor light source lighting circuit is provided with: a switching regulator that generates a drive current of a semiconductor light source using a switching element; and a control circuit that controls ON/OFF of the switching element. The control circuit is provided with: a comparator that compares the drive current and a target value; a counter that counts a digital value in a count direction determined by a comparison result of the comparator; a digital-analog converter that converts the digital value into an analog signal; and a drive circuit that controls the ON/OFF of the switching element based on the analog signal. The counter counts the digital value at a speed determined by an ON/OFF cycle of the switching element.
    • 半导体光源点亮电路设置有:使用开关元件产生半导体光源的驱动电流的开关调节器; 以及控制开关元件的ON / OFF的控制电路。 该控制电路具有:比较器,用于比较驱动电流和目标值; 计数器,其通过比较器的比较结果确定的计数方向对数字值进行计数; 数字模拟转换器,将数字值转换为模拟信号; 以及驱动电路,其基于模拟信号来控制开关元件的接通/断开。 计数器以由开关元件的ON / OFF周期确定的速度对数字值进行计数。
    • 9. 发明授权
    • Vehicle lamp
    • 车灯
    • US08207675B2
    • 2012-06-26
    • US12329825
    • 2008-12-08
    • Masayasu ItoFuminori Shiotsu
    • Masayasu ItoFuminori Shiotsu
    • B60Q1/14
    • F21V29/67B60Q1/0088F21S41/143F21S45/43F21V29/61F21W2102/00G05D23/1931G05D23/1951H05B33/0803H05B33/0815H05B33/0845
    • A vehicle lamp includes: N semiconductor light sources, wherein N is an integer of 1 or more; M fans configured to cool the N semiconductor light sources, wherein M is an integer of 1 or more; N current supply units configured to supply first current to the N semiconductor light sources, respectively; and a control unit configured to receive electric power supplied from an electric power source and supply second current to the N current supply units. The control unit includes: N switch elements that correspond to the N semiconductor light sources; M switch elements that correspond to the M fans; and a control circuit configured to control fan drive current supplied to the fans through the switch elements and the second current. The fans are coupled to the control unit.
    • 车灯包括:N个半导体光源,其中N是1或更大的整数; M个风扇,其被配置为冷却所述N个半导体光源,其中M为1以上的整数; N个电流供给单元,被配置为分别向N个半导体光源提供第一电流; 以及控制单元,被配置为接收从电源提供的电力并将第二电流提供给所述N个电流供应单元。 控制单元包括:对应于N个半导体光源的N个开关元件; M开关元件对应于M个风扇; 以及控制电路,被配置为通过开关元件和第二电流来控制提供给风扇的风扇驱动电流。 风扇耦合到控制单元。
    • 10. 发明申请
    • DISCHARGE LAMP LIGHTING CIRCUIT
    • 放电灯照明电路
    • US20120056549A1
    • 2012-03-08
    • US13224389
    • 2011-09-02
    • Takao MuramatsuMasayasu Ito
    • Takao MuramatsuMasayasu Ito
    • H05B41/36
    • H05B41/2882
    • A discharge lamp lighting circuit includes a DC/DC converter which generates from an input voltage a drive voltage to be applied to a discharge lamp of a driven object. A first drive voltage generating path has one end to which the input voltage is applied, and at the other end of which is an output capacitor on an output side of the DC/DC converter. A second drive voltage generating path has one end to which the input voltage is applied, and at the other end of which is the output capacitor. The second drive voltage generating path is different from the first drive voltage generating path. A control circuit controls ON/OFF of the first drive voltage generating path. The discharge lamp lighting circuit is arranged so that the voltage of the output capacitor when the first drive voltage generating path is in an ON-state becomes higher than the voltage of the output capacitor when the first drive voltage generating path is not so.
    • 放电灯点亮电路包括DC / DC转换器,其从输入电压产生要施加到被驱动对象的放电灯的驱动电压。 第一驱动电压产生路径具有施加输入电压的一端,另一端是DC / DC转换器的输出侧的输出电容器。 第二驱动电压产生路径具有施加输入电压的一端,另一端是输出电容器。 第二驱动电压产生路径与第一驱动电压产生路径不同。 控制电路控制第一驱动电压产生路径的接通/断开。 放电灯点亮电路被布置成使得当第一驱动电压产生路径处于导通状态时输出电容器的电压变得高于当第一驱动电压产生路径不是时的输出电容器的电压。