Light emitting device using LED
    4.
    发明授权
    Light emitting device using LED 有权
    使用LED的发光装置

    公开(公告)号:US06930332B2

    公开(公告)日:2005-08-16

    申请号:US10466114

    申请日:2002-08-28

    摘要: A light emitting device that can provide enhanced heat radiation as well as allowing light from a light emitting diode (LED) chip to be efficiently extracted out of the device. This light emitting device includes a metal plate (11) that is made of aluminum. The metal plate (11) has a projection (11a) projecting forward. The projection (11a) has a front side provided with a housing recess (11b). An LED chip (1) is mounted on the bottom of the housing recess (11b) so that it is thermally coupled to the metal plate (11), thus allowing heat to be radiated efficiently. A printed circuit board (12), having a grass epoxy substrate to be joined to the front surface of the metal plate (11), is provided with an insertion hole (13) into which the projection (11a) is inserted. The LED chip (1) and a bonding wire (W) are encapsulated in a transparent resin seal portion (50). The side wall of the housing recess (11b) that is part of the metal plate (11) functions as a reflector for reflecting forward light emitted from the LED chip (1). Thus, light from the LED chip (1) can be extracted efficiently.

    摘要翻译: 可以提供增强的热辐射以及允许来自发光二极管(LED)芯片的光被有效地从设备中提取的发光器件。 该发光器件包括由铝制成的金属板(11)。 金属板(11)具有向前突出的突起(11a)。 突起(11a)具有设置有壳体凹部(11b)的前侧。 LED芯片(1)安装在壳体凹部(11b)的底部,使得其与金属板(11)热耦合,从而有效地辐射热量。 具有要连接到金属板(11)的前表面的草环氧树脂基板的印刷电路板(12)设置有插入孔(11),插入孔(11a)。 LED芯片(1)和接合线(W)被封装在透明树脂密封部分(50)中。 作为金属板(11)的一部分的壳体凹部(11b)的侧壁用作反射从LED芯片(1)发射的向前的光的反射器。 因此,可以有效地提取来自LED芯片(1)的光。

    INSULATION TYPE AC-DC CONVERTER AND LED DC POWER SUPPLY DEVICE USING THE SAME
    8.
    发明申请
    INSULATION TYPE AC-DC CONVERTER AND LED DC POWER SUPPLY DEVICE USING THE SAME 有权
    绝缘型AC-DC转换器和使用其的LED直流电源装置

    公开(公告)号:US20100109571A1

    公开(公告)日:2010-05-06

    申请号:US12524640

    申请日:2008-01-30

    IPC分类号: H05B41/36 H02M3/335

    摘要: In an insulation type AC-dc converter in which input current from a commercial power supply is converted to obtain insulated direct current, the overall efficiency is raised and the structure is simplified. A multi-resonance type half-bridge DC-DC converter having an insulation transformer T is used as a first converter, and a boosting chopper circuit for power factor improvement is used as a second converter. Hence through multi-resonance operation, increases in losses can be suppressed even when the switching frequency is raised, and because a half-bridge circuit is used, switching elements and similar with lower voltage ratings can be employed, whereby overall efficiency can be increased. Moreover, a voltage substantially similar to the full-wave rectified waveform of the power supply voltage is obtained from the output capacitor at the boosting chopper circuit input, whereby there is no need for a feed-forward circuit across the insulation transformer, and moreover the electrolytic capacitor which had to be provided on the converter input side is unnecessary. This is advantageous for achieving miniaturization and a thin design.

    摘要翻译: 在将商用电源的输入电流转换为绝缘直流电的绝缘型AC-DC转换器中,总体效率提高,结构简化。 使用具有绝缘变压器T的多谐振型半桥DC-DC转换器作为第一转换器,并且将用于功率因数改善的升压斩波电路用作第二转换器。 因此,通过多谐振动作,即使在开关频率升高的情况下也能够抑制损失的增加,并且由于使用半桥电路,因此可以采用具有较低额定电压的开关元件等,从而可以提高整体效率。 此外,从升压斩波电路输入端的输出电容器获得与电源电压的全波整流波形大致相似的电压,由此不需要跨越绝缘变压器的前馈电路,此外, 必须在转换器输入侧设置的电解电容器是不必要的。 这对于实现小型化和薄设计是有利的。

    Insulation type AC-DC converter and LED DC power supply device using the same
    9.
    发明授权
    Insulation type AC-DC converter and LED DC power supply device using the same 有权
    绝缘型AC-DC转换器和LED直流电源装置使用相同

    公开(公告)号:US08125158B2

    公开(公告)日:2012-02-28

    申请号:US12524640

    申请日:2008-01-30

    IPC分类号: H05B37/02 H05B41/36

    摘要: In an insulation type AC-dc converter in which input current from a commercial power supply is converted to obtain insulated direct current, the overall efficiency is raised and the structure is simplified. A multi-resonance type half-bridge DC-DC converter having an insulation transformer T is used as a first converter, and a boosting chopper circuit for power factor improvement is used as a second converter. Hence through multi-resonance operation, increases in losses can be suppressed even when the switching frequency is raised, and because a half-bridge circuit is used, switching elements and similar with lower voltage ratings can be employed, whereby overall efficiency can be increased. Moreover, a voltage substantially similar to the full-wave rectified waveform of the power supply voltage is obtained from the output capacitor at the boosting chopper circuit input, whereby there is no need for a feed-forward circuit across the insulation transformer, and moreover the electrolytic capacitor which had to be provided on the converter input side is unnecessary. This is advantageous for achieving miniaturization and a thin design.

    摘要翻译: 在将商用电源的输入电流转换为绝缘直流电的绝缘型AC-DC转换器中,总体效率提高,结构简化。 使用具有绝缘变压器T的多谐振型半桥DC-DC转换器作为第一转换器,并且将用于功率因数改善的升压斩波电路用作第二转换器。 因此,通过多谐振动作,即使在开关频率升高的情况下也能够抑制损失的增加,并且由于使用半桥电路,因此可以采用具有较低额定电压的开关元件等,从而可以提高整体效率。 此外,从升压斩波电路输入端的输出电容器获得与电源电压的全波整流波形大致相似的电压,由此不需要跨越绝缘变压器的前馈电路,此外, 必须在转换器输入侧设置的电解电容器是不必要的。 这对于实现小型化和薄设计是有利的。

    LED LIGHTING CIRCUIT AND ILLUMINATING APPARATUS USING THE SAME
    10.
    发明申请
    LED LIGHTING CIRCUIT AND ILLUMINATING APPARATUS USING THE SAME 审中-公开
    LED照明电路和照明设备

    公开(公告)号:US20100109537A1

    公开(公告)日:2010-05-06

    申请号:US12447123

    申请日:2007-10-19

    IPC分类号: H05B39/00 H05B37/02

    摘要: Light outputs from many LEDs are uniformized and power consumption required for such uniformizing is suppressed, in an LED lighting circuit to be used for illuminating apparatus and the like. Currents flowing from a DD converter to an LED module are detected by a current detection resistor and compared with a reference voltage (Vref) from a reference voltage source by a comparison circuit. Corresponding to the comparison results, a control circuit controls the DD converter, and the currents flowing to the LED module are controlled to be constant currents at the same time. Furthermore, in LED load circuits configuring the LED module, control elements configuring a current mirror circuit are arranged in series, a corresponding control element is permitted to have a diode structure by having a circuit with the highest sum of the LED ON voltages as a reference, the flowing current values of the control elements of the remaining circuits are interlocked, and the LED load circuits are balanced.

    摘要翻译: 来自许多LED的光输出是均匀的,并且在用于照明装置等的LED照明电路中抑制了这种均匀化所需的功率消耗。 通过电流检测电阻检测从DD转换器流向LED模块的电流,并通过比较电路与参考电压源的参考电压(Vref)进行比较。 对应于比较结果,控制电路控制DD转换器,并且流向LED模块的电流被同时控制为恒定电流。 此外,在构成LED模块的LED负载电路中,构成电流镜电路的控制元件串联布置,通过使具有最高的LED导通电压之和的电路作为参考,允许相应的控制元件具有二极管结构 剩余电路的控制元件的流动电流值互锁,LED负载电路平衡。