Light source control circuit

Abstract

The embodiment of the invention discloses a light source control circuit, which comprises a power supply module, a light source control module and a first switch control module, and is characterized in that the light source control module is electrically connected with the power supply module and the first switch control module, the light source control module charges the power supply module according to the connected mains supply, and the first switch control module controls the connection state of a path connecting the power supply module and a light source in the light source control moduleaccording to the own switch state of the first switch control module. Through the technical scheme of the invention, the problem of insufficient electric quantity of the power supply module under anemergency condition is avoided, the first switch control module can control a weak current circuit in the light source control module, and the problem of worse safety caused by directly cutting off astrong current is avoided.

Description

technical field [0001] The embodiments of the present invention relate to the technical field of lighting, and in particular to a light source control circuit. Background technique [0002] At present, there are light sources for lighting in many fields. In the event of a power outage, that is, the mains power cannot supply power to the light source, some places need to provide an emergency power supply circuit for the light source to prevent the light source from being unable to illuminate when the power is off. [0003] At present, it is possible to control whether the backup battery supplies power to the light source through a switch. When the power is off, turn on the switch to enable the backup battery to supply power to the light source. The on-off switch between the batteries is set on the strong power line connecting the battery to the light source. When switching the emergency state, it is necessary to cut off the strong power, which is extremely dangerous, and when...

AI Technical Summary

Problems solved by technology

[0002] At present, there are light sources for lighting in many fields. In the case of power failure, that is, the mains power cannot supply power to the light source, some places need to provide an emergency power supply circuit for the light source to prevent the light source from being unable to illuminate when the power is off.

[0003] At present, it is possible to control whether the backup battery supplies power to the light source through a switch. When the power is cut off, turn on the switch to enable the backup battery to supply power to the light source. The on-off switch between the batteries is set on the strong power line connecting the battery to the light source. When switching the emergency state, it is necessary to cut off the strong power, which is extremely dangerous, and when the switch is turned off, there is no additional power source to charge the battery. , resulting in the possibility of insufficient battery power in emergency situations, for example, the remaining power of the battery is not enough to turn on the light source

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