Emergency Light Bulb Circuit for Charging and Power-Loss Switching
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Solution Overview
Problem
Existing emergency light bulbs are difficult to charge the battery and emit light normally, limiting their use as common lighting bulbs during normal power on, thus restricting their usage scenarios.
Innovation Solution
A rechargeable emergency light bulb design that allows electrical energy to charge the battery during normal power on and automatically switches to battery power during a power outage for emergency lighting, incorporating a PCB board, LED light-emitting elements, and a battery connected via a driving circuit with a QW2889F chip for seamless operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If emergency light bulbs are designed with battery and PCB board for emergency lighting, then emergency lighting function is achieved, but the bulb cannot charge the battery during normal power on and is limited to emergency use only
Solution Approach 1:
The light bulb is designed to perform multiple functions: normal lighting during powered operation and emergency lighting during power outages. The PCB board automatically switches between mains power mode (charging battery + lighting) and battery power mode (emergency lighting only), making the device universally applicable in both normal and emergency conditions.
Solution Approach 2:
The light bulb charges its own battery automatically during normal powered operation without requiring external charging intervention. The PCB board detects mains power availability and automatically routes electricity to charge the battery while simultaneously powering the LED lights, enabling the device to service itself.
2Use of energy by moving object
If the bulb is designed to provide normal lighting during power on, then lighting function is achieved, but the battery cannot be charged simultaneously
Solution Approach 1:
The PCB board segments the electrical energy from the mains power into two separate pathways: one pathway directs electricity to charge the battery, while the other pathway powers the LED light-emitting elements for normal lighting. This segmentation allows simultaneous battery charging and lighting operation without energy conflict.
Solution Approach 2:
The PCB board dynamically switches between different power supply modes based on mains power availability. During normal operation, it operates in dual-mode (charging + lighting); during power outages, it automatically transitions to battery-only mode for emergency lighting, providing dynamic adaptability to power conditions.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables the emergency light bulb to function as both a common lighting bulb and provide emergency lighting, enhancing its usability by allowing normal lighting during power on and emergency lighting during power outages.
Implementation Method 1
the battery is fixedly provided inside the lamp housing and electrically connected to the PCB board
Implementation Method 2
the PCB board is fixed on one side facing the lampshade and electrically connected to a plurality of LED light-emitting elements
Data Source
AI summary
A charging emergency light bulb is provided, which includes a lamp head, a lamp housing, a lampshade, and an electrical component. The lamp head is fixedly provided at one end of the lamp housing, and the lampshade is fixedly provided at the other end of the lamp housing; the electrical components include a PCB board and a battery. The PCB board is fixedly provided in the lamp housing and electrically connected to the lamp head. The PCB board is fixed on one side of the lampshade and electrically connected to a plurality of LED light-emitting elements. The battery is fixedly provided inside the lamp housing and electrically connected to the PCB board. When powered normally, electrical energy is input from the lamp head to the PCB board. This allows emergency light bulbs to function as common lighting bulbs during normal power on and as emergency light bulbs during power off.