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    • 1. 发明申请
    • METHOD AND DEVICE FOR LIGHTING A SPACE USING AN LED STRING
    • 使用LED灯照明空间的方法和装置
    • WO2012127354A1
    • 2012-09-27
    • PCT/IB2012/051147
    • 2012-03-12
    • KONINKLIJKE PHILIPS ELECTRONICS N.V.CREUSEN, Martinus PetrusKURT, Ralph
    • CREUSEN, Martinus PetrusKURT, Ralph
    • H05B33/08
    • H05B33/083H05B33/0809H05B33/0842
    • In a method of lighting at least part of a space, a light emitting diode (LED) string is used. The LED string comprises a first LED segment and at least one further LED segment,which are connected in series, each LED segment comprising at least one LED. The LED string is powered by a rectified AC voltage. The first LED segment is powered when the rectified AC voltage is above a first voltage level, and the first LED segment and the further LED segment are powered when the rectified AC voltage is above a second voltage level higher than the first voltage level. The first LED segment is arranged to radiate light to a first volume of the space, and the further LED segment is arranged to radiate light to a second volume of the space, the first volume being at least partly different from the second volume. The first volume may at least partly overlap the second volume.
    • 在照亮至少一部分空间的方法中,使用发光二极管(LED)串。 LED串包括串联连接的第一LED段和至少一个另外的LED段,每个LED段包括至少一个LED。 LED串由整流的交流电压供电。 当整流的AC电压高于第一电压电平时,第一LED段被供电,并且当整流的AC电压高于高于第一电压电平的第二电压电平时,第一LED段和另外的LED段被供电。 第一LED段布置成将光辐射到空间的第一体积,并且另外的LED区段被布置成将光辐射到空间的第二体积,第一体积与第二体积至少部分不同。 第一体积可以至少部分地与第二体积重叠。