led lighting device

Abstract

The invention discloses an LED lighting device which comprises a lamp body and a mains induction circuit. The lamp body comprises an LED lamp set, a spare power device and a control circuit, and the spare power device and the LED lamp set are respectively connected with the control circuit. When no mains supply exists, the mains induction circuit can provide a blackout signal to the control circuit, and after receiving the blackout signal, the control circuit enables the spare power device to be connected with at least part of LED lamps in the LED lamp set for starting emergency lighting. Reasons of losing power supply can be identified through the mains induction circuit to avoid the LED lighting device from maloperations, and when the mains supply is in a blackout state, power, needed to be consumed, of the LED lamp set is smaller, so that time of emergency lighting can be prolonged.

Description

technical field [0001] The invention relates to the technical field of LED lighting devices, in particular to an LED lighting device with an emergency lighting function or a power failure detection function. Background technique [0002] In the prior art, LED lighting devices are widely used in indoor environments such as offices and homes, and the LED lighting devices are electrically connected to a mains power supply through a switch, that is, the user can control the switch to use The LED lighting unit lights up or goes out. In addition, the existing corridor emergency lights used to provide emergency lighting, as long as the power supply is cut off, no matter what the reason is, such as unplugging the power cord, turning off the switch, or the mains power failure, the corridor emergency lights will be lit Instead, emergency lighting is provided. [0003] However, it is difficult to make the LED lighting device have the function of providing emergency lighting such as e...

AI Technical Summary

Problems solved by technology

[0003] However, it is difficult to make the LED lighting device have the function of providing emergency lighting such as corridor emergency lights.

In detail, it is impossible to identify the cause of the loss of power supply for corridor emergency lights, that is, it is impossible to distinguish whether it is a power failure, a switch is disconnected, or the power cord has been unplugged; therefore, if the technology of corridor emergency lights is applied to general LED lighting devices , it is also impossible to identify the reason for the loss of power supply. In this way, when a user wants to leave the use environment of the LED lighting device and turn off the switch, the LED lighting device will make a wrong judgment and cause a malfunction, that is, the LED lighting The device not only did not go out, but also activated the emergency lighting,

[0004] In addition, most of the existing LED lighting devices used to provide emergency lighting only have a single lamp body, so that when the mains is in a power outage, the single lamp body has to provide lighting for a wide range of environments. Therefore, the LED lighting device Backup power is easily consumed

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