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Power supply device for light elements and method for supplying power to light elements
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A technology for power supply equipment and power supply units, which is applied to electric light sources, electrical components, electroluminescent light sources, etc., can solve many problems of high power supply cost, and achieve the effects of improving overall control, reducing loss, and expanding control range.
Active Publication Date: 2012-03-14
SIGNIFY HLDG BV
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[0007] But the cost of providing multiple power supplies is higher
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[0053] in figure 1 A block diagram of the power supply device is shown in and is denoted by reference numeral 10. This power supply device 10 can be used to individually control light elements, such as LEDs or OLEDs. This is particularly useful when the lamp elements have different colors, such as red, green, and blue. By controlling the light elements to control the intensity or brightness of the corresponding red, green and blue lights, it is possible to mix each color in a wider color gamut. If one of the lamp elements is dominant and radiates white light, for example, the other lamp elements can be used to tune the color, i.e. change the color point between cool white and warm white, for example.
[0054] figure 1 The power supply device 10 shown in includes a power supply unit 12 that is connected to a power source such as a mains voltage, a battery voltage, or any other energy source. The power supply unit 12 includes a first power supply subunit 14 and a second power sup...
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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 lThe 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), wheight 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 supprein 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 secly 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 thond 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 methodird 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 methodfor supplying power to light elements. for supplying power to light elements.
Description
Technical field [0001] The present 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 having a second and a third color A light element, which is preferably used to tune the color of the first light element; and a controllable switch coupled to the third light element. The invention also relates to a method for powering said lamp elements preferably of different colors. Background technique [0002] For example, the power supply device described above can be known from US 2003 / 0112229 A1. This document describes a driver for color light emitting diodes (LEDs). The driver includes a series connection of a first LED and a switch and a second series connection of two LEDs, wherein the two series connections are connected in parallel. In addition, the driver includes a third LED disposed between the input and output lines of the circuit. Finally, an...
Claims
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