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Reconfigurable LED array and use in lighting system

A LED array and reconfiguration technology, applied in the direction of lighting devices, the use of semiconductor lamps, instruments, etc., can solve the problems of bulkiness, short life, and expensive

Active Publication Date: 2012-05-23
SIGNIFY HLDG BV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Power conversion from AC to unregulated DC and then from unregulated DC to regulated DC is often cumbersome and expensive
Specifically, capacitive components used in AC to DC converters generally have a shorter lifetime, which will affect the overall lifetime of the LED lighting system

Method used

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  • Reconfigurable LED array and use in lighting system
  • Reconfigurable LED array and use in lighting system
  • Reconfigurable LED array and use in lighting system

Examples

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Embodiment Construction

[0025] Aspects of the invention are described herein in the context of a method, apparatus, and apparatus for reconfiguring an array of light emitting diodes ("LEDs") capable of using AC power.

[0026] The present invention is described more fully hereinafter with reference to the accompanying drawings, in which various aspects of the invention are shown. This invention may, however, be embodied in many different forms and should not be construed as limited to the various aspects of the invention presented throughout this disclosure. Rather, these aspects are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. The various aspects of the invention illustrated in the drawings may not be drawn to scale. In fact, the dimensions of the various features may be expanded or reduced for clarity. Also, some of the drawings may be simplified for clarity. Accordingly, a drawing may not depict all...

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PUM

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Abstract

A light-emitting device capable of being powered by an AC power supply or an unregulated DC power supply is disclosed. The light-emitting device, in an aspect, is coupled to a controller, a light-emitting diode ("LED") array, and a power supply, wherein the power supply can be an AC power source or an unregulated DC power source. While the power supply provides electrical power, the controller generates various LED control signals in response to power fluctuation of the electrical power. The LED array allows at least a portion of LEDs to be activated in accordance with the logic states of the LED control signals.

Description

[0001] Cross References to Related Applications [0002] This application claims priority to earlier filed US Invention Patent Application Serial No. 12 / 504,994, filed July 17, 2009, which is hereby incorporated by reference. technical field [0003] Example aspects of the invention relate to lighting devices. More specifically, aspects of the invention relate to light emitting devices using AC power or unregulated DC power to generate light. Background technique [0004] Solid state light emitting devices such as light emitting diodes ("LEDs") are attractive candidates for replacing conventional light sources such as incandescent and fluorescent lamps. LEDs generally have significantly higher light conversion efficiencies than incandescent lamps and have a longer lifetime than conventional light sources. Some types of LEDs have higher conversion efficiencies than fluorescent light sources, and even higher conversion efficiencies have been demonstrated in laboratories. F...

Claims

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Application Information

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IPC IPC(8): G09G3/32H05B44/00
CPCH05B33/0815H05B33/083H05B45/48H05B45/37H05B45/44H05B47/10H05B45/3725H05B45/00Y02B20/30
Inventor D·休姆S·莱斯特
Owner SIGNIFY HLDG BV
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