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LED control circuit and LED lamp

A technology for controlling circuits and LED light strings, which is applied in the field of lighting, and can solve the problems of two-way LED light strings grabbing current and the color temperature of LED light sources cannot be accurately controlled.

Pending Publication Date: 2020-12-22
LEEDARSON IOT TECH INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of this, the embodiment of the present invention provides an LED control circuit and an LED lamp to solve the problem in the prior art that current grabbing occurs when the resistance values ​​of the two LED lamp strings are inconsistent, and the color temperature of the LED light source cannot be accurately controlled.

Method used

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  • LED control circuit and LED lamp
  • LED control circuit and LED lamp

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Embodiment Construction

[0032] In the following description, specific details such as specific system structures and technologies are presented for the purpose of illustration rather than limitation, so as to thoroughly understand the embodiments of the present invention. It will be apparent, however, to one skilled in the art that the invention may be practiced in other embodiments without these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present invention with unnecessary detail.

[0033] In order to illustrate the technical solutions of the present invention, specific examples are used below to illustrate.

[0034] refer to figure 1 , the embodiment of the present invention provides an LED control circuit, including: a power drive module 11, a current detection module 12, a current distribution module 13, a main control module 14, a first constant current control module 15...

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Abstract

The invention is suitable for the technical field of illumination, and provides an LED control circuit and an LED lamp, and the LED control circuit comprises a power drive module, a current detectionmodule, a current distribution module, a main control module, a first constant-current control module and a second constant-current control module. The current distribution module proportionally distributes the output current of the power driving module to the first color temperature LED lamp string and the second color temperature LED lamp string according to the color temperature adjusting signal sent by the main control module and the output current value detected by the current detection module. According to the invention, the current values of the two paths of LED lamp strings are distributed in proportion, so the current snatching phenomenon is avoided, and the accurate control of the color temperature can be realized.

Description

technical field [0001] The invention belongs to the technical field of lighting, and in particular relates to an LED control circuit and an LED lamp. Background technique [0002] LED light source has been widely used due to its advantages of high efficiency, energy saving and environmental protection. In the field of lighting, LED light source with dimming and color temperature adjustment can meet the needs of different application occasions due to its functions of dimming and color temperature adjustment, and has become an inevitable trend in the development of LED light sources. [0003] In the prior art, the PWM chopping method is mostly used to control the color temperature of the LED light source. When the resistance values ​​of two LED light strings with different color temperatures are inconsistent, the light string with the lower voltage will grab the current, causing the color temperature to deviate from the preset Value, can not accurately control the color tempe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05B45/345H05B45/325H05B45/30H05B45/20H05B45/10H05B47/165
CPCH05B45/345H05B45/325H05B45/30H05B45/20H05B45/10H05B47/165H05B45/24H05B45/14
Inventor 叶和木林起锵刘宗源李炎坤
Owner LEEDARSON IOT TECH INC