公开(公告)号：US10070488B2

公开(公告)日：2018-09-04

申请号：US15466291

申请日：2017-03-22

申请人： PHILIPS LIGHTING HOLDING B.V.

发明人： Kumar Arulandu ,  Georg Sauerlander ,  Sait Izmit ,  Dennis Johannes Antonius Claessens ,  Philip Louis Zulma Vael ,  Yi Wang ,  Dalibor Cvoric ,  Ronald Hans Van Der Voort ,  Patrick Alouisius Martina De Bruycker ,  Robertus Leonardus Tousain

IPC分类号： H05B37/02 ,  H05B33/08 ,  H02M1/36

摘要： Control circuits (1) bring power converters (4) in different modes in response to detection results. The power converters (4) exchange possibly rectified first voltage/current signals with electronic halogen transformers (2) and supply second voltage/current signals to light emitting diode circuits (5). The first current signals have, in different modes, different amplitudes. The different amplitudes have different constant values and/or different derivative values. As a result, the first current signal has become a relatively varying first current signal. Then, the halogen transformers (2) no longer experience problems that occur when smaller amounts of power need to be provided than designed to. The detections may comprise polarity detections of and/or zero-crossing detections in the first voltage signals. The halogen transformers (2) comprise self-oscillating switched mode power supplies designed to provide first amounts of power at their outputs. The light emitting diode circuits 5) are designed to consume second amounts of power smaller than the first amounts.

公开(公告)号：US09890942B2

公开(公告)日：2018-02-13

申请号：US14428648

申请日：2013-09-17

申请人： PHILIPS LIGHTING HOLDING B.V.

发明人： Lihua Lin ,  Aldo Tralli ,  Theodoor Cornelis Treurniet ,  Aldegonda Lucia Weijers ,  Martijn Evert Paul Jansen ,  Sait Izmit

IPC分类号： F21V23/00 ,  F21V29/74 ,  F21Y101/02

CPC分类号： F21V29/74 ,  F21K9/23 ,  F21V23/005 ,  F21V23/006 ,  F21V29/713 ,  F21V29/773 ,  F21V29/85 ,  F21Y2101/00 ,  F21Y2115/10

摘要： A lamp comprising a driver assembly, the driver assembly including a driver board with driver electronics, at least one point light source and a heat sink, the heat sink including a top side and a bottom side, a central space extending from the bottom side to the top side and adapted for receiving the driver board of the driver assembly, a zone provided at the top side and adapted for receiving the at least one point light source, wherein a plurality of fins adapted for dissipating heat are extending on opposite sides of the central space, and an extension of the central space in at least one radial direction of the heat sink is larger than an extension of the zone in the radial direction of the heat sink such that the central space is provided with at least one section arranged offset from and radially adjacent to the zone.

公开(公告)号：US09629208B2

公开(公告)日：2017-04-18

申请号：US14646594

申请日：2013-11-04

申请人： PHILIPS LIGHTING HOLDING B.V.

发明人： Kumar Arulandu ,  Georg Sauerländer ,  Sait Izmit ,  Dennis Claessens ,  Philip Louis Zulma Vael ,  Yi Wang ,  Dalibor Cvoric ,  Ronald Hans Van Der Voort ,  Patrick Alouisius Martina De Bruycker ,  Robertus Leonardus Tousain

IPC分类号： H05B33/08

CPC分类号： H05B33/0815 ,  H02M1/36 ,  H05B33/0809 ,  H05B33/083 ,  H05B33/0887

摘要： Control circuits (1) bring power converters (4) in different modes in response to detection results. The power converters (4) exchange possibly rectified first voltage/current signals with electronic halogen transformers (2) and supply second voltage/current signals to light emitting diode circuits (5). The first current signals have, in different modes, different amplitudes. The different amplitudes have different constant values and/or different derivative values. As a result, the first current signal has become a relatively varying first current signal. Then, the halogen transformers (2) no longer experience problems that occur when smaller amounts of power need to be provided than designed to. The detections may comprise polarity detections of and/or zero-crossing detections in the first voltage signals. The halogen transformers (2) comprise self-oscillating switched mode power supplies designed to provide first amounts of power at their outputs. The light emitting diode circuits 5) are designed to consume second amounts of power smaller than the first amounts.