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Ultra-low ripple led eye protection light

A technology of LED lamps and eye protection lamps, which is applied in the direction of electric lamp circuit layout, lighting devices, light sources, etc., can solve the problems of low light efficiency and achieve the effects of low current ripple and low cost

Inactive Publication Date: 2017-07-04
深圳市美吉星集成科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the era of incandescent lighting, although the light efficiency is low, only 15 lumens per watt, due to the thermal inertia of the tungsten wire, when the AC power crosses zero, the hot tungsten wire has no time to cool down, so our eyes do not perceive the 50 Hz strobe

Method used

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  • Ultra-low ripple led eye protection light

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Embodiment Construction

[0018] Specific embodiments of the present invention will be described in detail below, but this does not constitute a limitation to the protection scope of the present invention.

[0019] Such as figure 1 As shown, the ultra-low ripple LED eye protection lamp, the AC power supply drives the LED lamp through the LED drive power supply, and the magnetic amplifier circuit and Darlington cascade for offsetting the DC bias are also connected between the LED drive power supply and the LED lamp circuit;

[0020] The magnetic amplification circuit includes: the emitter winding and the base winding are symmetrically wound on the magnetic ring B, the emitter winding includes the emitter winding N11 and the emitter winding N12, the base winding includes the base winding Nb1 and the base winding Nb2; the LED drive power supply The output positive terminal of the LED drive power supply is connected to the same-name terminal of the emitter winding N11 and the same-name terminal of the emi...

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Abstract

The invention discloses an ultralow ripple LED (light emitting diode) eye-protecting lamp. The eye-protecting lamp is characterized in that a magnetic amplification circuit for neutralizing direct current magnetic bias and a Darlington cascade circuit are connected between an LED driving source and an LED lamp according to a magnetic amplifier theory and a Darlington cascade method when the LED driving source isn't changed. According to the LED eye-protecting lamp, the purpose of reducing current ripples, stabilizing instead of frequently flashing and protecting eyes can be realized, thus the cost is low.

Description

technical field [0001] The invention belongs to the technical field of LED lamps, and in particular relates to an ultra-low ripple LED eye protection lamp. [0002] technical background [0003] In the era of incandescent lighting, although the light efficiency is low, only 15 lumens per watt, due to the thermal inertia of the tungsten wire, when the AC power crosses zero, the hot tungsten wire has no time to cool down, so our eyes do not perceive the 50 Hz strobe. [0004] The phosphor of fluorescent lamps has afterglow. If the phosphor contains rare earth "europium" (EU) element, it will have longer afterglow, which can cover the stroboscopic flicker of 50 Hz AC power zero crossing. [0005] LED light is a light source with fast response at the nanosecond level, especially the LED point light source with a light efficiency of up to 300 lumens per watt. It is easy to cause visual fatigue! In particular, the nominal 18-watt LED lamp is a common low-priced LED lamp in the ma...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H05B37/02
Inventor 李俐劼王桂光王希天王建超
Owner 深圳市美吉星集成科技有限公司