Illuminant Module Single-Driver Color Temperature Adjustment
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Solution Overview
Problem
LED lamps with adjustable color temperature require multiple drivers for different LED strings, increasing complexity and cost, and are not compatible with existing fixtures like MR16, due to the need for separate drivers for each string.
Innovation Solution
An illuminant module comprising multiple LED units with phosphor layers and a current regulator that adjusts current flow to change luminous flux, allowing for adjustable color temperature without the need for separate drivers, and is integrated into a housing with a heat sink and electronic circuit module for compatibility with various fixtures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple LED strings with separate drivers are used to achieve adjustable color temperature, then color temperature adjustability is improved, but device complexity and cost increase
Solution Approach 1:
The patent combines multiple LED strings with different color temperatures into a single integrated illuminant module that uses one driver. The module includes first and second LED strings with different phosphor compositions, allowing color temperature adjustment through a single driver that controls the combined output of all LED strings, thereby reducing driver complexity while maintaining color temperature adjustability.
Solution Approach 2:
The single driver in the illuminant module is designed to universally control multiple LED strings with different color characteristics. The driver can adjust the luminous flux of each LED string independently through current regulation, enabling the system to achieve multiple color temperature outputs using one multi-functional driver instead of separate dedicated drivers for each string.
2Adaptability or versatility
If multiple separate drivers are used for different LED strings, then color temperature adjustment capability is improved, but manufacturing cost increases
Solution Approach 1:
The patent consolidates the control of multiple LED strings into a single driver unit within the illuminant module. By integrating the driver and multiple LED strings into one manufacturable module, the design reduces component count and assembly complexity, leading to lower manufacturing costs while preserving the capability to adjust color temperature through controlled current distribution to different LED strings.
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 enables adjustable color temperature in LED lamps with reduced complexity and cost, while maintaining compatibility with existing fixtures by using a single driver setup and phosphor layers to mix blue and yellow emissions for desired color temperatures.
Implementation Method 1
The first phosphor layer and the first LED dice collectively provide an emission having a first color temperature. The second phosphor layer and the second LED dice collectively provide an emission having a second color temperature.
Data Source
AI summary
An illuminant module includes a first illuminant unit, a second illuminant unit, a first phosphor layer, and a second phosphor layer. The first illuminant unit includes one or more first LED dice and a current regulator electrically connected to the LED dice in series. The second illuminant unit includes one or more second LED dice. The first phosphor layer at least covers the first LED dice, wherein first phosphor layer and the first LED dice collectively provide an emission having a first color temperature. The second phosphor layer at least covers the second LED dice, wherein second phosphor layer and the second LED dice collectively provide an emission having a second color temperature, the current regulator is configured to adjust currents flowing to the first illuminant unit and the second illuminant unit for changing luminous flux of emissions emitted from the first illuminant unit and the second illuminant unit.