Unlock instant, AI-driven research and patent intelligence for your innovation.

An LED lamp and its overheating protection circuit

A technology of overheating protection circuit and LED lamps, which is applied in the direction of emergency protection circuit device, lamp circuit layout, circuit device, etc., can solve the problems of inability to provide effective protection and low accuracy of overheating protection circuit, and achieve the effect of high accuracy

Active Publication Date: 2016-03-30
OCEANKING DONGGUAN LIGHTING TECH +2
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide an overheat protection circuit for LED lamps, which aims to solve the problems that the current overheat protection circuit has low accuracy and cannot provide effective protection

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • An LED lamp and its overheating protection circuit
  • An LED lamp and its overheating protection circuit

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0014] In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, but not to limit the present invention.

[0015] figure 1 The circuit structure of the LED lamp overheating protection circuit provided by the first 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:

[0016] An LED lamp overheating protection circuit is respectively connected to a power supply and an input end of an LED constant current circuit 300, an output end of the LED constant current circuit 300 is grounded through an LED lamp D1, and the LED lamp overheating protection circuit include...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention is applicable to the field of LED lamp protecting circuits, and particularly relates to an LED lamp and an overheat protecting circuit thereof. The overheat protecting circuit of the LED lamp is composed of discrete components, when the LED lamp is overheated, voltage of a control end of the first switch tube is in high level, the first switch tube is conducted, voltage of a control end of a second switch tube is in low level, the second switch tube is cut off from conduction, an electromagnetic coil loop of a relay K1 is cut off, a power source loop of a subsequent LED constant-current circuit is cut off, and the purpose of overheat protection is achieved. The overheat protecting circuit is high in accuracy and effectively protects the LED lamp.

Description

technical field [0001] The invention belongs to the field of LED lamp protection circuits, in particular to an LED lamp and an overheat protection circuit thereof. Background technique [0002] As a new type of light source, LED has the characteristics of energy saving, environmental protection and high efficiency. The technology has been mature and applied in various fields. LED is widely used as a lighting source. LED is a current-type light-emitting device, which is very sensitive to the current flowing through itself, and has relatively strict requirements. However, as a point light source, LED is very small in size, and the heat emitted during operation is relatively concentrated, and excessive temperature will seriously shorten the LED. Therefore, in order to ensure the working life of the LED, it is necessary to add the LED overheating protection in the LED drive circuit, and effectively protect the LED when the LED is overheated to prevent the LED from being damaged ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): H02H5/04H05B37/02
Inventor 周明杰孙占民
Owner OCEANKING DONGGUAN LIGHTING TECH