Lighting Device For An AC Power Supply

一种照明装置、AC电源的技术，应用在照明装置、电光源、电致发光光源等方向，能够解决花费大等问题，达到简单重量、生产经济、免除RFI抑制的效果

Active Publication Date: 2013-05-08
DIEHL AEROSPACE GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, power supplies for LEDs do cost slightly more than thermal light sources

Method used

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  • Lighting Device For An AC Power Supply
  • Lighting Device For An AC Power Supply
  • Lighting Device For An AC Power Supply

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0043] figure 1 A schematic block diagram is shown as a lighting device 1 according to a first exemplary embodiment of the present invention. This figure is from the program LTspiceIV of Linear Technology Corporation, where descriptions of graphical symbols (unless self-explanatory) can be found in the program description, which is incorporated by reference in this disclosure. Other designations in the block diagram refer to components of the lighting device and may be taken as examples of used components. The lighting device 1 can be used as a lighting system in a building or in a mobile unit, in particular in an aircraft.

[0044] The lighting device 1 comprises: an AC power source 2 , a rectifier arrangement 3 , a plurality of lighting groups 4.1 to 4.8 and a constant current source 5 . From the AC power source 2 via the rectifier arrangement 3 all lighting groups 4 and constant current power sources 5 are connected in series.

[0045] The AC power source 2 provides a si...

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PUM

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Abstract

The invention relates to a lighting device for an AC power supply. LEDs as light sources have significant advantages with regard to energy efficiency. For instance, unlike thermal light sources, such as incandescent bulbs etc. for example, a far greater proportion of the electrical energy is converted into visible light by LEDs, so that the efficiency is significantly greater than with thermal light sources. The lighting device 1 for an AC power supply 2 comprises at least two lighting groups 4.1 - 4.8, wherein each lighting group has an input 6 and an output 7 and at least one LED 8 arranged between the input and the output, wherein the lighting groups are connected to one another in series and wherein each of the lighting groups comprises a bypass arrangement 9, said bypass arrangement comprising a switchable bypass path 10, which is arranged in parallel with all the LEDs in the lighting group. The bypass arrangement is designed to activate the bypass when an applied voltage is less than a cutoff voltage and to deactivate the bypass when the applied voltage is greater than the cutoff voltage.

Description

technical field [0001] The invention relates to a lighting device of AC power supply, said lighting device comprising at least two lighting groups, wherein each lighting group has a group input and a group output and at least one LED, wherein said at least one LED is arranged in a group Between the input and the group output, and wherein the lighting groups are connected in series with each other. Background technique [0002] LEDs as light sources have significant advantages with regard to energy efficiency. For example, unlike thermal light sources such as incandescent light bulbs, for example, a much larger proportion of the electrical energy is converted to visible light by LEDs, making the efficiency significantly greater than thermal light sources. [0003] However, power supplies for LEDs do cost slightly more than thermal light sources. One of the reasons is that individual LEDs have only low light output, so a large number of LEDs are usually combined to form a li...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05B37/02
CPCH05B33/0827Y02B20/347H05B37/02H05B45/46H05B47/23
Inventor T·特兰
Owner DIEHL AEROSPACE GMBH
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