Earthing type protective infrared human-sensing LED smart lamp

Abstract

The invention relates to an earthing type protective infrared human-sensing LED smart lamp which comprises an LED lamp body. The LED lamp body is connected with a smart control circuit and comprises an alternate-current reactive voltage reduction circuit, a rectifying bridge and a PFC (power factor correction) circuit, wherein the PFC circuit is respectively connected with a direct-current voltage reduction and stabilization circuit and a driving circuit, the direct-current voltage reduction and stabilization circuit is respectively connected with an infrared human detection circuit and the driving circuit, the infrared human detection circuit is connected with the driving circuit, and the driving circuit is connected with the LED lamp body. The infrared human detection circuit comprises a level conversion circuit and is connected with the direct-current voltage reduction and stabilization circuit and an infrared human detector, the infrared human detector is connected with a signal transmitting circuit which is connected with the driving circuit and used for regulating output power at highlight state and mircropower state according to user needs. An outer casing of the LED lamp body is provided with a metal earthing device. The earthing type protective infrared human-sensing LED smart lamp has the advantages of high power supply efficiency, low circuit temperature rise, fine safety performance and convenience in use and installation.

Description

technical field [0001] The invention relates to an LED technology, in particular to a protective grounding type human body infrared induction LED intelligent lamp. Background technique [0002] Due to the advantages of energy saving, environmental protection and long life, LED lamps have become a new energy-saving lamp. The combination of LED lamp driving technology and human body infrared detection technology further broadens the application field of LED lamps. [0003] The existing human body infrared sensing LED lamp part is installed separately from the human body infrared detection and LED drive. For example, the Chinese invention patent application number: 201120188069.3 discloses "an infrared sensing LED energy-saving lamp circuit"; the advantages of this scheme are: The installation position of the detector can be determined according to the needs of the user, and the detection range is wide; the detection circuit and the drive circuit are external, and the heat dis...

AI Technical Summary

Problems solved by technology

This solution has the following problems: (1) LED lights only have two states of "full on" and "full off", and the output brightness of the LED lights cannot be adjusted. After the human body leaves the detection area, the LED lights are all off, which is not suitable for underground garages. , library, reading room and other places, LED lights have poor adaptability

[0004] (2) The original circuit needs to be changed during use, which is inconvenient to install. When the detection circuit and the drive circuit are far apart, the connection line is easy to bring in interference and affect the control effect

[0006] (1) The control circuit adopts the resistance step-down method to supply power to the chip and the detector. The temperature rise of the circuit is large and the power supply efficiency is low. The control circuit is built in the lamp tube, which causes heat accumulation and poor heat dissipation, which seriously affects the service life of the LED lamp bead.

[0007] (2) There are no lightning protection, anti-interference and other protective measures at the AC input terminal. The interference and noise in the mains will affect the pearlescent effect of the LED lamp and affect the normal operation of the control circuit.

[0008] Moreover, in the existing technical solutions, the conductive part of the LED lamp shell is not grounded, which is likely to endanger the safety of people and LED lamp equipment.

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