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Power supply device for light elements and method for supplying power to light elements

A technology for power supply equipment and power supply units, which is applied in the direction of electric light sources, electrical components, electroluminescent light sources, etc., can solve multiple problems such as high power supply costs, and achieve the effects of improving overall control, reducing losses, and expanding the control range

Active Publication Date: 2009-09-02
SIGNIFY HLDG BV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] But the cost of providing multiple power supplies is higher

Method used

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  • Power supply device for light elements and method for supplying power to light elements
  • Power supply device for light elements and method for supplying power to light elements
  • Power supply device for light elements and method for supplying power to light elements

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Embodiment Construction

[0053] exist figure 1 A block diagram of a power supply device is shown in and denoted by reference numeral 10 . Such a power supply device 10 can be used to individually control light elements such as LEDs or OLEDs or the like. This is particularly useful where the lamp elements are of different colours, such as red, green and blue. By controlling the lamp elements and thereby controlling the intensity or brightness of the corresponding red, green and blue lamps, it is possible to mix each color within a wider color gamut. If one of the lamp elements is dominant and emits white light, for example, the other lamp elements can be used to tune the color, ie to change the color point, for example between cool white and warm white.

[0054] figure 1 The power supply device 10 shown in FIG. 2 comprises a power supply unit 12 which is connected to a power supply such as mains voltage, battery voltage or any other energy source. The power supply unit 12 includes a first power sup...

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PUM

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Abstract

The present invention relates to a power supply device for light elements comprising a power supply unit (12), a first light element (30) having a first color, preferably white, a second and a third light element (34, 38) having second and third colors, preferably for tuning the color of the first light element, and a controllable switch (42) coupled in series to said third light element (38), wherein said series connection of said third light element (38) and said switch is arranged in parallel to said second light element (34). The power supply device is characterized in that said power supply unit (12) has a first and a second output (20, 22), said first light element (30) being coupled to said first output (20) and said second and third light elements (34, 38) being coupled to said second output (22), said power supply unit (12) is adapted to provide adjustable, preferably independently adjustable, output signals at said first and said second output (20, 22), and said second and third light elements (34, 38) and said power supply unit (12) are adapted such that said third light element (38) radiates light when the switch (42) is closed. The invention further relates to a method for supplying power to light elements.

Description

technical field [0001] The invention relates to a power supply device for a lamp element comprising: a power supply unit; a first lamp element having a first color, preferably white; a second and a third lamp element having a second and a third color a light element, preferably for tuning the color of said first light element; and a controllable switch coupled to said third light element. The invention also relates to a method for powering said lamp elements, preferably of different colours. Background technique [0002] A power supply device as described above is known, for example, from US 2003 / 0112229 A1. This document describes a driver for colored light emitting diodes (LEDs). The driver includes a series connection of a first LED to a switch and a second series connection of two LEDs, wherein the two series connections are in parallel. Furthermore, the driver comprises a third LED arranged between the input and output lines of the circuit. Finally, an inductance is...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05B33/08H05B44/00
CPCH05B33/0818Y02B20/346H05B33/0863H05B33/0869H05B33/0815H05B33/0872H05B33/086H05B45/20H05B45/59H05B45/50Y02B20/30H05B45/22H05B45/3725
Inventor H·J·G·拉德马彻V·舒尔茨M·温特
Owner SIGNIFY HLDG BV
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