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LED drive equipment

A technology for light-emitting diodes and driving equipment, which is applied in the direction of electroluminescent light sources, light sources, electric light sources, etc., and can solve problems such as undisclosed flickering phenomena and flickering

Active Publication Date: 2017-09-26
SOLUM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] Meanwhile, in an AC direct drive type LED driving device, a flickering phenomenon may occur due to noise in the AC power voltage at the boundary where the number of turned-on LED groups changes.
[0011] Patent Documents 1 to 6 listed below do not disclose configurations for preventing the flicker phenomenon due to noise in the AC power voltage at the boundary where the number of LED groups turned on changes.

Method used

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Examples

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Embodiment Construction

[0041] Hereinafter, embodiments of the present disclosure will be described in detail with reference to the accompanying drawings. However, this disclosure may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art. Throughout the drawings, the same or similar reference numerals will be used to designate the same or similar elements.

[0042] figure 1 is a view showing an alternating current (AC) direct drive type light emitting diode (LED) driving device.

[0043] refer to figure 1 , the AC direct drive type light emitting diode driving device may include a power supply unit 10 , a rectification unit 20 , a light emitting diode unit 30 and a driving unit 40 .

[0044] The power supply unit 10 can supply AC power.

[0045] The rectification unit 2...

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Abstract

A light emitting diode driving apparatus may include: a light emitting diode emitting light by receiving rectified power; a driver driving the light emitting diode based on a voltage level of the rectified power; a controller based on a voltage level applied to the driver voltage and hysteresis references to limit the driver operation.

Description

[0001] Cross References to Related Applications [0002] This application claims the benefit of Korean Patent Application No. 10-2013-0131561 filed with the Korean Intellectual Property Office on October 31, 2013, the contents of which are hereby incorporated by reference. technical field [0003] The present disclosure relates to a light emitting diode (LED) driving device capable of directly driving a light emitting diode using alternating current (AC) power. Background technique [0004] According to the development of semiconductor technology, a light emitting diode (LED), a semiconductor device having a p-n junction structure and emitting light through recombination of electrons and holes, has recently been applied to various technical fields. In particular, since LEDs have a higher degree of efficiency, a longer effective lifespan, and are more environmentally friendly than existing light emitting devices, fields in which LEDs are applied continue to increase. [0005...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H05B37/02H05B44/00
CPCH05B45/48H05B45/00H05B45/46H05B45/37
Inventor 朴得熙车霜贤李演重
Owner SOLUM CO LTD