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Light-emitting device and light-emitting method thereof

A light-emitting device and light-emitting diode technology, applied to lighting devices, components of lighting devices, light sources, etc., can solve the problems of complicated design of current-guiding control circuit 24 and inability to have the same brightness

Inactive Publication Date: 2011-04-27
STARCHIPS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this architecture, since the LED D 1 -D n There will be repeated conduction on different current paths, so if the brightness control is realized by pulse width modulation dimming, the design of the current steering control circuit 24 will be very complicated, and D 1 -D n cannot have the same brightness

Method used

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  • Light-emitting device and light-emitting method thereof
  • Light-emitting device and light-emitting method thereof
  • Light-emitting device and light-emitting method thereof

Examples

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Embodiment Construction

[0058] image 3 A schematic structural diagram of a light emitting device 32 incorporating a power supply device 30 according to an embodiment of the present invention is shown. The lighting device 32 receives a regulated AC power V from the power supply device 30 AC，reg as input power. The power supply device 30 includes a rectifying circuit 302 for receiving an AC power input. The rectification circuit 302 can be a full-wave rectification circuit or a half-wave rectification circuit to supply the light emitting device 32 with a forward voltage. The power supply device 30 may also include a capacitor C connected to the rectifier circuit 302 1 , which is only used to filter the high-frequency noise part of the AC power input.

[0059] refer to image 3 , the light emitting device 32 includes a light emitting diode array 322 and a driving circuit 324 . In one embodiment, the LED array 322 is composed of a plurality of light emitting columns 326 , 328 and 330 connected in ...

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PUM

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Abstract

The invention relates to a light-emitting device and a light-emitting method thereof. The light-emitting device receives an adjusted alternating current power supply as an input power supply. The embodiment of the light-emitting device comprises a light-emitting diode (LED) array and a drive circuit, wherein the LED array is formed by parallel connection of at least one light-emitting group; the drive circuit is provided with a plurality of outputs corresponding to the light-emitting groups; each output has a default so as to control the luminance of the corresponding light-emitting group; and each light-emitting group in the LED array automatically and sequentially conducts for fixed time according to the output of the drive circuit and the amplitude of the alternating current power supply and ends according to the default of the drive circuit.

Description

technical field [0001] The present invention relates to a lighting device and its lighting method, in particular to a device receiving a regulated AC power supply or a DC power supply as the input power of the lighting device and its lighting method. Background technique [0002] Due to the advantages of low power consumption, high brightness, small size and long service life, light-emitting diodes have become the mainstream of the new generation of lighting sources. In many LED device applications, the power supply is configured to provide a regulated DC output voltage from an AC power source, eg 110V, 60Hz, to power the device. figure 1 A schematic structural diagram of a typical power supply 10 incorporating a DC-DC converter or a switching regulator is shown. refer to figure 1 , the power supply 10 receives an AC power input via a bridge rectifier 12 and a capacitor C filter filtering, thereby providing an unrectified DC voltage as the input voltage V of the DC-to-DC ...

Claims

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Application Information

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IPC IPC(8): F21S2/00F21V23/00H05B37/02F21Y101/02
CPCY02B20/42Y02B20/40
Inventor 许祥麟
Owner STARCHIPS TECH