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A method of controlling a lighting arrangement, a lighting control circuit and a lighting system

A technology for lighting control circuits and lighting devices, which is applied to the use of electrical components and semiconductor lamps, etc.

Pending Publication Date: 2022-02-25
SIGNIFY HLDG BV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0011] A disadvantage of this device is that the efficiency

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  • A method of controlling a lighting arrangement, a lighting control circuit and a lighting system
  • A method of controlling a lighting arrangement, a lighting control circuit and a lighting system
  • A method of controlling a lighting arrangement, a lighting control circuit and a lighting system

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Embodiment Construction

[0054] The present invention will be described with reference to the accompanying drawings.

[0055] It should be understood that the detailed description and specific examples, while indicating exemplary embodiments of the devices, systems and methods, are intended for purposes of illustration only and are not intended to limit the scope of the invention. These and other features, aspects and advantages of the devices, systems and methods of the present invention will become better understood from the following description, appended claims and drawings. It should be understood that the drawings are only schematic and not drawn to scale. It should also be understood that throughout the drawings, the same reference numerals are used to indicate the same or similar parts.

[0056] The present invention provides a lighting device, such as an LED lamp, comprising: powered by a DC voltage from a voltage regulated power converter: a light source and an associated current driver, or...

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Abstract

A lighting arrangement such as a LED lamp comprises a light source and associated current driver, or a set of at least two parallel light sources and associated current drivers, supplied by a DC voltage from a voltage-regulated power converter. A feedback circuit provides a temperature-dependent control input to a control loop of the power converter, such that the DC voltage is adjusted in dependence on a sensed temperature. In this way, the voltage headroom required can be reduced, and efficiency gains are made.

Description

technical field [0001] The invention relates to the control of lighting systems, such as, but not exclusively, multi-channel lighting systems. For example, multiple channels can provide color mixing and color temperature control, but other effects can also be achieved by using multiple light sources. Background technique [0002] There are various known multi-channel LED light sources. One possible arrangement utilizes different color channels in parallel. Each channel, for example, can independently provide a different color output. Alternatively, different LEDs may be provided in series and bypass switches may be used to select which LEDs are activated and thereby control the output color. [0003] For example, such a system can generate white light by independently driving red, green and blue LEDs. Note that in practice, green LEDs can utilize native blue LEDs and green phosphor layers. White light can be generated at different color temperatures, for example having ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05B45/00H05B45/325H05B45/345
CPCH05B45/00H05B45/325H05B45/345H05B45/46H05B45/375H05B45/347H05B45/18Y02B20/30H05B45/34
Inventor T·G·齐杰尔曼H·M·J·M·卡尔曼
Owner SIGNIFY HLDG BV