LED Lighting Device with Dual-Source Power Generation and Adaptive Pulse Control
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Solution Overview
Problem
Existing outdoor lighting devices that use power generation panels to harness both sunlight and light from a light source face challenges in extending illumination time when sunlight is scarce and energy storage is insufficient, leading to potential power outages.
Innovation Solution
A lighting device incorporating a high-intensity LED lamp, a power generating panel that receives sunlight and lamp light, a storage battery, a lamp drive portion using pulse signals, and a control portion that adjusts pulse width and period based on remaining battery charge to minimize energy consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If the light source is illuminated continuously to provide sufficient lighting, then the illumination intensity is improved, but the electric power consumption of the energy storage device increases
Solution Approach 1:
The patent applies periodic action by controlling the LED lamp to operate in intermittent cycles rather than continuously. The lamp is turned on and off periodically based on the remaining battery charge level, which reduces overall energy consumption while maintaining adequate illumination during operational periods. This periodic operation allows the system to extend illumination time without depleting the energy storage device too rapidly.
Solution Approach 2:
The patent implements dynamics by making the lamp operation adaptive and variable rather than fixed. The control portion dynamically adjusts the lamp's operation mode (including pulse width and period) based on real-time detection of remaining battery charge. This dynamic control optimizes the balance between illumination intensity and energy consumption, allowing the system to extend illumination time while maintaining acceptable lighting levels.
2Duration of action of moving object
If the pulse width and period are increased to extend illumination time, then the duration of action is improved, but the illumination intensity decreases
Solution Approach 1:
The patent applies parameter changes by dynamically adjusting the pulse width and period parameters of LED operation based on remaining battery charge levels. The control portion modifies these parameters to optimize the trade-off between illumination time and intensity. By changing parameters adaptively rather than using fixed values, the system can extend illumination time while maintaining acceptable intensity levels throughout the discharge cycle.
Solution Approach 2:
The patent implements dynamics by making the pulse width and period adaptive rather than static. The control portion dynamically adjusts these temporal parameters based on real-time battery charge detection, allowing the system to extend illumination duration while maintaining adequate intensity. This dynamic parameter adjustment ensures optimal performance throughout the operational cycle.
3Power
If the power generation panel is positioned to receive maximum sunlight, then the energy generation is improved, but the ability to receive light from the light source is reduced
Solution Approach 1:
The patent applies universality by designing the power generation panel to serve multiple functions: generating power from both sunlight and light reflected by the lamp. The panel is positioned and oriented to maximize reception of both light sources, making the system adaptable to different lighting conditions. This multi-functional capability allows the system to extend illumination time by harvesting energy from both environmental sunlight and artificial lamp light.
Solution Approach 2:
The patent uses the lamp light itself as an intermediary energy source. The light emitted by the lamp reflects off surrounding surfaces and returns to the power generation panel, creating a feedback loop where the lamp's own light contributes to power generation. This intermediary mechanism extends the effective energy harvesting period beyond direct sunlight availability.
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
The solution effectively reduces energy consumption and extends the illumination time by optimizing power usage through pulse-driven LED operation, even during low sunlight conditions, and alerts users to low battery levels through intermittent lighting.
Implementation Method 1
a power generating panel that generates electric power by receiving light
Implementation Method 2
a storage battery that stores the generated electric power
Implementation Method 3
a light emitting diode (LED) lamp
Data Source
AI summary
A lighting device includes a light emitting diode (LED) lamp, a power generating panel that is disposed at a position where the power generating panel is capable of receiving sunlight and light irradiated by the LED lamp and that is configured to generate electric power by receiving the sunlight and the light irradiated by the LED lamp, a storage battery that is configured to store the electric power generated by the power generating panel and to supply the electric power to the LED lamp, a lamp drive portion that is configured to drive the LED lamp using pulse signals, a remaining amount detection portion, and a control portion that is configured to control, in accordance with the remaining amount detected by the remaining amount detection portion, a pulse width and a period that are used when the lamp drive portion drives the LED lamp.