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LED lamp overheat protection circuit

An overheating protection circuit, LED lamp technology, applied in the field of electronics, can solve problems such as temperature rise and safety accidents, and achieve the effect of improving safety

Inactive Publication Date: 2015-07-15
OCEANKING DONGGUAN LIGHTING TECH +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the LED lamp is used for a long time or the LED drive circuit is short-circuited, its temperature will rise, and excessive temperature will cause various safety accidents

Method used

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Embodiment Construction

[0010] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0011] figure 1 It is an LED lamp overheating protection circuit in the embodiment of the present invention. As shown in the figure, an LED lamp overheating protection circuit in an embodiment of the present invention may at least include a thermistor, a first triode, a first voltage dividing resistor, a second triode, a relay, an LED drive module and an LED lamp ,in:

[0012] One end of the first voltage dividing resistor is connected to the positive pole of the...

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Abstract

An embodiment of the invention discloses an LED lamp overheat protection circuit comprising a thermistor, a first triode, a first voltage dividing resistor, a second triode, a relay, an LED driving module, and an LED lamp. One end of the first voltage dividing resistor is connected to the positive electrode of a power supply, and the other end of the first voltage dividing resistor is connected with one end of the thermistor. The other end of the thermistor is connected to the negative electrode of the power supply. One end of the thermistor is further connected with the base of the first triode. The emitter of the first triode is connected to the negative electrode of the power supply. The collector of the first triode is connected with the base of the second triode. The collector of the second triode is connected with the GND end of the relay. The emitter of the second triode is connected to the negative electrode of the power supply. The common end of the relay is connected to the positive electrode of the power supply. The normally closed end of the relay is connected with the LED driving module, and the LED driving module is connected with an LED lamp. The thermistor is used for detecting the temperature of the LED driving module and the temperature of the LED lamp. By adopting the LED lamp overheat protection circuit of the invention, the LED lamp can be turned off when the temperature of the LED lamp is too high, and the safety of the LED lamp is improved.

Description

technical field [0001] The invention relates to the field of electronic technology, in particular to an LED lamp overheat protection circuit. Background technique [0002] With the continuous development of electronic technology, users have higher and higher requirements for lighting equipment. Among them, safety indicators have become an important reference factor for users to choose lighting equipment. When the LED lamp is used for a long time or the LED drive circuit is short-circuited, its temperature will rise, and excessive temperature will cause various safety accidents. Contents of the invention [0003] The technical problem to be solved by the embodiments of the present invention is to provide an LED lamp overheating protection circuit, which can turn off the LED lamp when the temperature of the LED lamp is too high, and improve the safety of the LED lamp. [0004] In order to solve the above technical problems, an embodiment of the present invention provides a...

Claims

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Application Information

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IPC IPC(8): H05B37/02
Inventor 周明杰杨俊昌
Owner OCEANKING DONGGUAN LIGHTING TECH
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