Color-Changing LED Bulb with External Switch Control
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Solution Overview
Problem
Existing LED lights are primarily monochromatic or have fixed polychromatic sources, lacking the ability to change illumination colors through direct switch control, necessitating a solution for external control of color alteration.
Innovation Solution
A color-changing LED bulb with an external switch that controls a sequence of color changes via a circuit comprising a chip bridge rectifier, IC chips, and light beads, allowing for remote activation and automatic sequential lighting through a detection and memory circuit.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If LED lights use monochromatic sources or fixed polychromatic sources, then the lighting structure is simple, but the illumination color cannot be changed through switch control
Solution Approach 1:
The patent divides the lighting system into multiple independent LED chips with different colors (red, green, blue, yellow, purple, cyan) arranged in parallel circuits. Each color channel can be independently controlled by the control circuit, allowing selective activation to produce different illumination colors. This segmentation enables color versatility while maintaining manageable circuit complexity through modular organization.
Solution Approach 2:
The control circuit is designed to perform multiple functions: it detects switch states, determines color change sequences, controls timing intervals, and activates different LED color channels. This multi-functional control circuit replaces what would otherwise require multiple separate control systems, achieving color adaptability without proportionally increasing device complexity.
2Ease of operation
If LED lights enable color changing through internal control circuits, then the lighting functionality is enhanced, but the control operation becomes less convenient as the switch must be integrated into the bulb
Solution Approach 1:
The patent extracts the control switch from the bulb structure and places it externally (on the wall or socket). The bulb's control circuit only needs to detect the presence or absence of voltage from the external switch, simplifying the integration requirement. This extraction allows users to operate the color-changing function remotely without requiring the switch to be built into the bulb, enhancing ease of operation while keeping the bulb structure relatively simple.
3Adaptability or versatility
If LED lights implement automatic sequential color changing, then the lighting flexibility is improved, but the device requires complex detection and memory circuits
Solution Approach 1:
The patent implements automatic sequential color changing by programming the control circuit to activate different LED color channels in a predetermined periodic sequence. The control circuit includes a timer or counter that automatically progresses through color states at set intervals, eliminating the need for complex real-time detection and decision-making circuits. This periodic action approach provides lighting mode flexibility while keeping the detection and memory requirements manageable.
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 remote control of LED bulb colors using an external switch, allowing for sequential color changes and automatic operation, enhancing lighting flexibility and user experience.
Implementation Method 1
The control circuitry includes a chip bridge rectifier, chip resistor or resistors, an IC chip
Implementation Method 2
LED lighting is an electroluminescent semiconductor chip
Data Source
AI summary
There is described a color-changing LED bulb in the LED bulb technical field. The bulb has light-emitting components, under which electrified components are mounted. The outer surface of the light-emitting component is covered by a lampshade. The light-emitting component includes a component loading board with a protective cover on the outer side. The power cord stretches out of the bottom of the loading board and is connected to electrified components. Capacitors are also mounted at the bottom of the loading board. This color changing LED bulb controls the power supply to the beads via a chip bridge rectifier, chip resistor, and IC chip. If the switch is flipped, the chip bridge rectifier detects if power is supplied. By connecting the 3 different IC chips—U1, U2 & U3, U1 chip controls the U2 & U3 IC chip to electrify the beads of different colors. Each time that the switch is operated (flipped), a different color is displayed.