公开(公告)号：US20140131746A1

公开(公告)日：2014-05-15

申请号：US14107294

申请日：2013-12-16

申请人： SICHUAN SUNFOR LIGHTING CO., LTD.

发明人： MING ZHANG ,  KUN ZHAO ,  DONG-MING LI

IPC分类号： H01L33/50

CPC分类号： H05B33/12 ,  C09K11/586 ,  C09K11/7421 ,  C09K11/7703 ,  C09K11/7761 ,  C09K11/7774 ,  C09K11/7792 ,  H01L33/504 ,  H05B33/0815 ,  Y02B20/181

摘要： A white LED lighting device driven by a pulse current is provided, which consists of blue, violet or ultraviolet LED chips, blue afterglow luminescence materials A and yellow luminescence materials B. Wherein the weight ratio of the blue afterglow luminescence materials A to the yellow luminescence materials B is 10-70 wt %: 30-90 wt %. The white LED lighting device drives the LED chips with a pulse current having a frequency of not less than 50 Hz. Because of using the afterglow luminescence materials, the light can be sustained when an excitation light source disappears, thereby eliminating the influence of LED light output fluctuation caused by current variation on the illumination. At the same time, the pulse current can keep the LED chips being at an intermittent work state, so as to overcome the problem of chip heating.

摘要翻译： 提供由脉冲电流驱动的白色LED照明装置，其由蓝色，紫色或紫外LED芯片，蓝色余辉发光材料A和黄色发光材料B组成。其中蓝色余辉发光材料A与黄色发光体的重量比 材料B为10-70重量％：30-90重量％。 白色LED照明装置以不小于50Hz的频率的脉冲电流驱动LED芯片。 由于使用余辉发光材料，所以当激发光源消失时，可以维持光线，从而消除由电流变化引起的LED光输出波动对照明的影响。 同时，脉冲电流可以保持LED芯片处于间歇工作状态，从而克服了芯片加热的问题。

公开(公告)号：US20140132177A1

公开(公告)日：2014-05-15

申请号：US14107387

申请日：2013-12-16

申请人： SICHUAN SUNFOR LIGHTING CO., LTD.

发明人： MING ZHANG ,  KUN ZHAO ,  DONG-MING LI

IPC分类号： H05B33/12

CPC分类号： H05B33/12 ,  C09K11/586 ,  C09K11/7421 ,  C09K11/7703 ,  C09K11/7761 ,  C09K11/7774 ,  C09K11/7792 ,  H01L33/504 ,  H05B33/0815 ,  Y02B20/181

摘要： A white LED lighting device driven by a pulse current is provided, which consists of blue, violet or ultraviolet LED chips, blue afterglow luminescence materials A and yellow luminescence materials B. Wherein the weight ratio of the blue afterglow luminescence materials A to the yellow luminescence materials B is 10-70 wt %:30-90 wt %. The white LED lighting device drives the LED chips with a pulse current having a frequency of not less than 50 Hz. Because of using the afterglow luminescence materials, the light can be sustained when an excitation light source disappears, thereby eliminating the influence of LED light output fluctuation caused by current variation on the illumination. At the same time, the pulse current can keep the LED chips being at an intermittent work state, so as to overcome the problem of chip heating.