Compact Switched LED Nightlight for Single-Gang Junction Box
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Solution Overview
Problem
Conventional LED lighting solutions require large driver circuitry to convert AC power to DC, making them unsuitable for confined spaces like single-gang junction boxes, and lack an integrated switch for localized control, which is particularly problematic in healthcare settings where subtle and temporary lighting is needed.
Innovation Solution
A switched LED nightlight that includes a driver circuit configured to convert AC to DC within a single-gang junction box, featuring a pulse generator and an illuminated switch, allowing for self-contained power management and control within a compact housing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If conventional LED driver circuitry is used to convert AC to DC, then the LED can be powered by standard AC power, but the driver circuitry becomes large and unwieldy, adding size that prevents installation in single-gang junction boxes
Solution Approach 1:
The patent extracts the AC-to-DC conversion function from a traditional large driver circuit and implements it using a compact bridge rectifier and voltage regulator assembly that fits within the constrained space of a single-gang junction box. This extraction allows the system to maintain AC power compatibility while dramatically reducing the volume of the power conversion components.
2Use of energy by moving object
If driver circuitry is installed in a second junction box or double-gang junction box, then the LED can be powered, but space is wasted that could be used by another outlet or switch
Solution Approach 1:
The patent creates a universal mounting system that adapts to various junction box configurations. The housing includes mounting brackets that can securely install the LED assembly in single-gang, double-gang, or other junction box types, allowing the same device to serve multiple installation scenarios and maximize the utility of available electrical infrastructure.
3Volume of moving object
If driver circuitry is installed in the wall, then the LED can be powered in a single-gang junction box, but additional time, effort, and expense are required for installation
Solution Approach 1:
The patent merges the driver circuitry, LED assembly, housing, and mounting components into a single pre-assembled unit. This integration eliminates the need for separate wall modifications and complex assembly during installation, allowing electricians to simply connect power wires and mount the complete unit in the junction box, significantly reducing installation time and complexity.
4Use of energy by moving object
If conventional LED lighting solutions are used, then LEDs can provide efficient lighting, but there is no space in the junction box for additional components such as switches
Solution Approach 1:
The patent segments the lighting system into controllable sections by incorporating a switch assembly with independently controllable LED segments. This segmentation allows different portions of the LED array to be controlled separately, enabling versatile lighting scenarios such as dimming, selective zone control, or different lighting modes while maintaining efficient LED operation.
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 a compact, self-contained LED nightlight with an integrated switch that can be easily installed in a single-gang junction box, providing focused illumination and easy operation, addressing the space constraints and control needs in various applications, including healthcare scenarios.
Implementation Method 1
a driver circuit that can be configured to convert alternating current to direct current
Data Source
AI summary
A nightlight including a light emitting diode (LED) is provided. The nightlight includes a switch that is operative to control the flow of power to the LED. The nightlight also includes a driver circuit that is configured to convert alternating current to direct current, where the direct current provides power to the LED. The nightlight also includes a housing coupled to the nightlight that contains the driver and is configured to fit within a single-gang junction box. The switch includes an LED that is powered by the driver circuit, where the LED is illuminated without regard to the position of the switch.