Light-emitting device with digital control of color temperature modulation and application thereof
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Solution Overview
Problem
Conventional analog control methods for modulating LED color temperature are prone to circuit disconnections, short circuits, and mechanical wear, leading to reduced product lifespan and increased costs due to the need for multiple LED strings and mechanical switches.
Innovation Solution
A light-emitting device with digital control of color temperature modulation using a control module, DIP switch, and wall switch, which employs truth table information for digital switching and color mixing, eliminating the need for mechanical switches and allowing for stable color temperature adjustment and extended product lifespan.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If analog control with mechanical switches is used to modulate LED color temperature, then color temperature adjustment is achieved, but circuit disconnections and short circuits occur frequently
Solution Approach 1:
The patent replaces mechanical switches with digital control circuits that use electronic switching elements (such as transistors or integrated circuit switches) to control the conduction state of LED strings. This substitution eliminates mechanical contact wear and associated reliability issues while maintaining the ability to adjust color temperature through digital control signals.
Solution Approach 2:
The patent extracts and eliminates the mechanical switch component from the system, removing the source of mechanical wear and circuit instability. The color temperature control function is retained through purely electronic/digital switching mechanisms that do not involve mechanical moving parts.
2Ease of operation
If mechanical switches are used for switching LED strings, then color temperature modulation is achieved, but mechanical wear and electric arcs occur
Solution Approach 1:
The patent replaces mechanical switches with solid-state electronic switching elements that have no moving parts. This eliminates mechanical wear and electric arc generation, significantly extending the service life of the color temperature modulation system while maintaining full operational functionality.
Solution Approach 2:
The patent uses solid-state electronic components that are more durable and have longer operational lifetimes compared to mechanical switches. These electronic switching elements can withstand billions of switching cycles without degradation, effectively making the system maintenance-free for the product's entire lifecycle.
3Adaptability or versatility
If multiple LED strings are installed for different color temperatures, then color temperature expression is achieved, but product cost increases
Solution Approach 1:
The patent implements a digital control system that can selectively activate different LED strings based on control signals. This allows a single lighting device to provide multiple color temperature outputs (e.g., warm white, cool white, natural light) by controlling which LED strings are active, rather than requiring separate fixtures for each color temperature.
Solution Approach 2:
The patent uses dynamic digital control to switch between different LED string configurations. The control circuit can dynamically adjust which LED strings are conductive based on the desired color temperature, providing versatile color temperature expression without the need for multiple static LED string installations.
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 digital control method enhances the stability of color temperature modulation, reduces setup costs, and extends the product's service life by preventing circuit disconnections and mechanical wear, while allowing for precise and stable color temperature adjustments.
Implementation Method 1
a plurality of first LEDs, having a first color temperature; a plurality of second LEDs, having a second color temperature
Implementation Method 2
Light Emitting Diode (LED) featuring low power consumption and excellent light emitting property
Data Source
AI summary
Disclosed are a light-emitting device for digital control of color temperature modulation and its application. The light-emitting device is electrically connected to a wall switch and includes a DIP switch, first LEDs, second LEDs and a control module. The control module is electrically connected to the above components and contains a truth table. The truth table includes at least a first mode, second mode, third mode and a memory and automatically switch mode, and a digital switching is accomplished by correlating the DIP switch to the truth table. In the memory and automatically switch mode, the first to third mode color temperatures are sequentially switched and controlled by turning on or off the wall switch according to the truth table information. The light-emitting device may be applied to light fixtures or mirror products to improve the convenience of use.