Variable Color Temperature LED Lighting with Autonomous Clock Control
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current LED lighting fixtures do not effectively vary color temperature based on time, season, and latitude, leading to inadequate lighting that can disrupt human circadian cycles and result in health issues such as gastrointestinal and cardiovascular disorders, stress, anxiety, and mood disorders.
Innovation Solution
An LED lighting apparatus with an internal clock and electronic module that alternates between two sets of LEDs with different color temperatures (2700K and 6500K) to simulate natural daylight variations, eliminating the need for a control unit and using a buffer battery to maintain a predefined schedule, allowing continuous color temperature adjustment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If centralized control systems with bus synchronization are used to vary color temperature, then color temperature can be varied according to programming, but device complexity and cost increase significantly
Solution Approach 1:
Each LED lamp is equipped with an autonomous control unit containing an internal clock and memory, enabling it to independently determine and adjust its color temperature according to predetermined schedules without requiring external centralized control or communication infrastructure
Solution Approach 2:
The centralized control system is divided into distributed autonomous control units, with each lamp operating independently based on its own internal timing and storage components
2Adaptability or versatility
If centralized control systems are used to synchronize lamps, then color temperature can be adjusted according to time and season, but manufacturing cost increases
Solution Approach 1:
Each lamp contains its own internal clock and memory components that enable autonomous time-based color temperature adjustment, eliminating the need for expensive centralized control infrastructure and reducing overall system cost
Solution Approach 2:
The patent uses inexpensive, simple components (internal clocks and memory) that can be easily manufactured and replaced in each lamp, rather than investing in costly centralized control systems
3Device complexity
If fixed color temperature LED fixtures are used, then device complexity is low, but human circadian health is compromised
Solution Approach 1:
The LED lighting system dynamically adjusts color temperature over time based on circadian rhythms, transitioning between different color temperatures throughout the day rather than maintaining a fixed setting, thereby supporting human health while remaining relatively simple
Solution Approach 2:
The system changes the color temperature parameter of the LED light output according to predetermined schedules that match natural circadian patterns, enabling health benefits without complex control mechanisms
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 provides a cost-effective, reliable, and safe method to vary light color temperature, improving human well-being by mimicking natural illumination patterns without the need for complex communication systems, reducing health risks associated with disrupted circadian cycles.
Implementation Method 1
through the use of a buffer battery
Implementation Method 2
two sets of LED light sources
Data Source
Figure 1
AI summary
An LED lighting apparatus having a variable color temperature, comprising an electronic module (10), which is interposed between the output of a control unit (11) of a plurality of lighting LEDs (13) and at least two strips (12), having different color temperature and positioned under a lens, each of which contains one or more of said lighting LEDs (13), characterized in that said control unit (11) includes a selector, suitable for cyclically selecting, by means of said electronic module (10), one of the operation modes between a cold light operation mode, an intermediate light operation mode, a warm light operation mode and a default operation mode, in which said two strips (12) of LEDs (13) are switched on at a speed not perceptible to the human eye and below said lens, so that the color temperature varies according to the duty-cycle used and according to the set operation mode.