LED Lamp Selectable Color Temperature via Conduction Path Selector
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional LED lamps lack the ability to be retrofitted with tunable correlated color temperature (CCT) ratings without requiring specialized driver electronics, wiring, or connections, limiting their adaptability to existing light fixtures.
Innovation Solution
An LED lamp design featuring a primary grouping of LED light engines with switchable groupings that allow for selection of different CCT ratings through a conduction path selector, enabling the combination of LED groupings to achieve intermediate or adjusted CCT ratings without altering the existing electronic driver.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional LED lamps use a single CCT rating for all LED light engines, then the lamp structure is simple and compatible with existing fixtures, but the adaptability to different lighting requirements is limited
Solution Approach 1:
The LED array is segmented into multiple groups (first group, second group, third group) with different CCT ratings. A conduction path selector switch enables selective connection of these groups to the driver circuit, allowing the lamp to adapt to different CCT requirements while maintaining a relatively simple overall structure that is compatible with existing fixtures.
Solution Approach 2:
The LED lamp is designed with multi-functionality by incorporating LED light engines with different CCT ratings (2700K, 3500K, 5000K) within a single lamp structure. The conduction path selector enables the lamp to provide multiple CCT outputs, making it universally adaptable to various lighting applications without requiring different lamp types.
2Adaptability or versatility
If tunable LED lamps use multiple LED light engine arrangements with different CCT ratings, then CCT tunability is achieved, but specialized driver electronics and wiring are required
Solution Approach 1:
Multiple LED light engine groups with different CCT ratings are merged into a single lamp structure that shares a common driver circuit. The conduction path selector switch enables selective activation of different LED groups using the same driver, eliminating the need for multiple specialized driver circuits and reducing overall system complexity.
Solution Approach 2:
A conduction path selector switch is introduced as an intermediary component between the LED light engine groups and the driver circuit. This simple switching mechanism enables CCT selection without requiring complex driver electronics, serving as a mediator that provides tunability while maintaining compatibility with standard driver circuits.
3Adaptability or versatility
If LED lamps are designed with switchable LED groupings for CCT selection, then CCT adaptability is improved, but the device complexity increases due to additional switching components
Solution Approach 1:
The switching mechanism is implemented with localized quality by using a simple conduction path selector switch that selectively connects specific LED light engine groups to the driver circuit. This localized switching approach provides CCT selection capability while minimizing overall device complexity, as the switch only needs to handle basic conduction path selection rather than complex control functions.
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 flexible adjustment of CCT ratings in existing fixtures with minimal additional cost or complexity, maintaining comparable flux and efficiency while allowing for multiple color temperature configurations without needing new driver electronics or wiring.
Implementation Method 1
Conventional light emitting diode (LED) lamps can include an array of LED light engines
Data Source
AI summary
A light emitting diode (LED) lamp includes a primary LED grouping (210,310), a switchable LED grouping (215), and a conduction path selector (240,340) configured to select a conductive path that places the primary LED grouping in electrical series with at least a portion of the switchable LED grouping, or bypasses the switchable LED grouping. The primary LED grouping have a first color temperature rating, and each respective LED subgrouping have a respective color temperature different from the first color temperature. Selection of one or more LED subgrouping results in the LED lamp emitting different color temperatures.