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Lighting device for driving light-emitting diode by using insulated piezoelectric transformer

A technology of light-emitting diodes and piezoelectric transformers, which is applied in the direction of electric lamp circuit layout, piezoelectric/electrostrictive/magnetostrictive devices, electric light sources, etc. And other issues

Inactive Publication Date: 2011-03-30
MIDAS WEI TRADING +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the conventional technology requires a wire-wound transformer for voltage transformation, so the volume of the entire drive device is very large, which does not meet the requirements of lightness, thinness and shortness.
In addition, the efficiency loss of the magnetic core will reduce the output efficiency when the wire-wound transformer transforms the voltage, and the withstand voltage of the coil is insufficient, and it is easy to break down due to high voltage, resulting in short circuit and burning, which is extremely dangerous

Method used

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  • Lighting device for driving light-emitting diode by using insulated piezoelectric transformer
  • Lighting device for driving light-emitting diode by using insulated piezoelectric transformer
  • Lighting device for driving light-emitting diode by using insulated piezoelectric transformer

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Embodiment Construction

[0038] see figure 1 , is a schematic diagram of the first embodiment of the lighting device of the present invention that utilizes an insulating piezoelectric transformer to drive a light-emitting diode. This embodiment is applied to an AC lighting device, which includes an LED module 11 and at least one insulating piezoelectric transformer 12 . The light emitting diode module 11 is a plurality of first polarity light emitting diodes 111 and a plurality of second polarity light emitting diodes 112 connected in parallel, wherein the first polarity light emitting diodes 111 and the second polarity light emitting diodes 112 The polarities are opposite, and can be arranged alternately and connected in parallel to form the light emitting diode module 11 . The insulated piezoelectric transformer 12 includes a primary side 121 and a secondary side 122. The primary side 121 receives a pulse wave signal, converts the pulse wave signal into an AC voltage through piezoelectric transform...

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Abstract

The invention discloses a lighting device for driving a light-emitting diode (LED) by using an insulated piezoelectric transformer. The lighting device comprises at least one insulated piezoelectric transformer connected to an LED module, the primary side of the insulated piezoelectric transformer receives pulse signals, the pulse signals are converted into an alternating current voltage in a piezoelectric voltage transformation mode, and the secondary side of the insulated piezoelectric transformer outputs the alternating current voltage to the LED module to drive lighting. Because of the advantages of low leakage current, good insulating property, high pressure resistance, low temperature, small volume, thin packing thickness, high conversion efficiency and the like, the insulated piezoelectric transformer can improve the lighting efficiency and even can reduce the volume effect of the whole lighting driving device.

Description

technical field [0001] The present invention relates to a lighting device that utilizes an insulating piezoelectric transformer to drive a light-emitting diode, and in particular relates to a lighting device that utilizes an insulating piezoelectric transformer to improve power conversion efficiency and optimize the lighting efficiency of a light-emitting diode. Background technique [0002] In recent years, due to the development trend of light, thin, short and small information products, the application of piezoelectric transformers in driving LCD backlights has become increasingly common. The basic principle of the piezoelectric transformer is to use the energy exchange effect between the electric field and the force field to convert the voltage. It has small size, light weight, high power conversion efficiency, high reliability, high insulation, and no electromagnetic interference (electromagnetic interference, EMI ) and many other advantages. However, the primary side ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05B37/00F21V23/00H01L41/107F21Y101/02H10N30/40
Inventor 魏道金
Owner MIDAS WEI TRADING
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