Color Temperature Adjustable LED Lamp with 3-Way Switch Control
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Solution Overview
Problem
Existing color temperature adjustable lighting lamps using fluorescent tubes are bulky and cause discomfort due to simultaneous illumination of multiple tubes, which increases brightness unevenly.
Innovation Solution
A color temperature adjustable LED lamp utilizing a 3-way switch, mains detecting circuit, AND logic circuit, oscillation circuit, and two LED arrays with different color temperatures, allowing for selective activation of each array or their simultaneous operation to achieve desired color temperatures without simultaneous illumination.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If two fluorescent tubes with different color temperatures are arranged in the same lighting lamp to achieve mixed light, then color temperature adjustment is achieved, but the volume of the lighting lamp becomes large
Solution Approach 1:
The patent replaces the mechanical/optical system of fluorescent tubes with phosphor powders with an electronic system using LEDs. Two kinds of LEDs with different color temperatures (first LED array and second LED array) are used instead of fluorescent tubes, achieving color temperature adjustment while significantly reducing lamp volume due to the compact nature of LED technology
Solution Approach 2:
The patent changes the physical parameters by using LED technology instead of fluorescent tube technology. This parameter change enables the same color temperature adjustment function (2600K warm white and 5600K cold white) to be achieved in a much more compact form factor
2Adaptability or versatility
If two fluorescent tubes with different color temperatures operate at the same time to mix lights, then a light source with intermediate color temperature is obtained, but the lighting illumination becomes twice as bright which discomforts users
Solution Approach 1:
The patent implements periodic action through the oscillation circuit that alternatively turns on the first LED array and second LED array. Instead of both arrays operating simultaneously which would double the brightness, the oscillation circuit switches between them periodically, achieving color temperature mixing through temporal alternation rather than spatial simultaneity, thus maintaining comfortable illumination levels
Solution Approach 2:
The patent introduces dynamics through the oscillation circuit that dynamically switches between the two LED arrays. This dynamic operation allows the system to achieve intermediate color temperatures by alternating between warm white and cold white LEDs, avoiding the static problem of simultaneous operation that causes excessive brightness
3Adaptability or versatility
If a 3-way switch is used to control multiple live wires for color temperature adjustment, then control versatility is improved, but the control circuit complexity increases
Solution Approach 1:
The patent applies universality by using a standard 3-way switch to control multiple live wires (first live wire and second live wire) for different operating modes. The same switch component provides multiple functions: controlling single color temperature modes and mixed color temperature mode, eliminating the need for separate control mechanisms for each function
Solution Approach 2:
The system implements self-service through the mains detecting circuit that automatically detects which live wire is conducted and autonomously determines the operating mode. The oscillation circuit and logic circuit automatically configure the LED array operation without user intervention, reducing the burden on the control circuit while maintaining versatility
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 reduces lamp volume, provides environmental and power-saving benefits, and prevents uneven brightness by alternating the operation of LED arrays, ensuring consistent light output.
Implementation Method 1
The rectifier circuit is used for converting an alternating current into a direct current
Implementation Method 2
The first LED array is actuated while receiving the first partial voltage signal or the oscillation signal. The second LED array is actuated while receiving the second partial voltage signal or the oscillation signal
Data Source
AI summary
A color temperature adjustable LED lamp is disclosed, which includes a 3-way lamp socket and a 3-way lamp head. The 3-way lamp socket has a 3-way switch. The 3-way lamp head is connected to the 3-way lamp socket and has a first LED array and a second LED array. The color temperature of the first LED array is different from the color temperature of the second LED array. The color temperature adjustable LED lamp includes a mains detecting circuit for detecting a conducting state of a first live wire and a second live wire in the 3-way switch to selectively operate the first LED array, the second LED array or alternatively operates the first and second LED array.