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Light-emitting diode (LED) drive circuit and lamp

A technology of LED driving and LED lights, which is applied in circuit devices, lamp circuit layout, emergency protection circuit devices, etc., can solve problems such as short lifespan, achieve the effects of prolonging lifespan, increasing flickering frequency, and avoiding damage

Inactive Publication Date: 2012-10-03
OCEANS KING LIGHTING SCI&TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The main purpose of the present invention is to provide an LED drive circuit, aiming to solve the problem of short life of the existing battery-powered LED lamps when the power supply voltage of the LED lamp is reduced

Method used

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  • Light-emitting diode (LED) drive circuit and lamp
  • Light-emitting diode (LED) drive circuit and lamp
  • Light-emitting diode (LED) drive circuit and lamp

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Embodiment Construction

[0015] In order to make the purpose, principle and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0016] figure 1 The module structure of the LED driving circuit provided by the embodiment of the present invention is shown. For the convenience of description, only the parts related to the embodiment of the present invention are shown, and the details are as follows.

[0017] The LED driving circuit is respectively connected with the battery BT1 and the LED lamp, and the LED driving circuit includes a switch control unit 100 , a boost unit 200 , a voltage detection unit 300 and a control unit 400 .

[0018] The input terminal of the switch control unit 100 is connected to the positive pole of the batte...

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Abstract

The invention is applicable to the field of lamps and provides a light-emitting diode (LED) drive circuit and a lamp. The LED drive circuit comprises a switch control unit, a boost unit, a voltage detection unit and a control unit. According to the embodiment of the invention, the voltage detection unit detects supply voltage of the LED lamp and feeds back a voltage value to the control unit; and the control unit judges whether the supply voltage drops to below a normalized value, and if so, the control unit controls a switch control unit to control a battery BT1 to supply power to the LED lamp, and increases the flicker frequency of the LED lamp or cuts off the power of the LED lamp to prompt a user to repair the LED lamp. Therefore, damage to the LED lamp can be avoided, and the service life of the LED lamp is prolonged.

Description

technical field [0001] The invention belongs to the field of lamps, in particular to an LED driving circuit and a lamp. Background technique [0002] With the continuous development of science and technology, new products and new technologies are constantly innovating. As a new type of light source, LED has the characteristics of energy saving, environmental protection and high efficiency. There are various LED drive circuits. [0003] With the development of microelectronics technology, LED lamps powered by batteries have appeared. When the power supply voltage to the LED lamp drops below the standard value, the LED lamp will be damaged if the LED lamp is still working for a long time, which will reduce the life of the LED lamp. . Contents of the invention [0004] The main purpose of the present invention is to provide an LED driving circuit, aiming at solving the problem of short lifespan of existing battery-powered LED lamps when the power supply voltage of the LED l...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05B37/02H02H9/04
Inventor 周明杰陈显云
Owner OCEANS KING LIGHTING SCI&TECH CO LTD
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