Variable Color Temperature LED Filament Lamp DIP Switch Control
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Solution Overview
Problem
Existing LED filament lamps with variable color temperature are expensive and complex, failing to meet market demand for cost-effective and simple operation.
Innovation Solution
An LED filament lamp with a DIP switch or electronic switch that allows switching of different color temperatures by controlling the positive and negative poles of the driving power supply, integrated into a simple and cost-effective structure with a metal guide wire and fluorescent glue, and optionally filled with gas for heat dissipation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If stepless color matching is implemented in LED lamps, then color temperature adjustability is improved, but cost increases significantly
Solution Approach 1:
The LED filament is divided into multiple independent LED modules, each with distinct color temperature characteristics. This segmentation allows selective activation of different modules to achieve color temperature switching without requiring complex stepless dimming circuits, thereby reducing cost while maintaining adaptability.
Solution Approach 2:
Multiple LED chips with different color temperatures are integrated onto a single filament substrate. By combining different color temperature LEDs in one unified structure, the lamp achieves multi-color temperature capability through simple circuit switching rather than expensive stepless dimming control systems.
2Measurement precision
If complex control systems are used for color temperature switching, then color temperature control precision is improved, but device complexity increases
Solution Approach 1:
The control system is simplified by extracting the color temperature switching function to a basic manual switch that selectively connects different LED modules. This removes the need for complex microcontrollers, sensors, and feedback circuits while maintaining precise color temperature control through direct electrical switching.
Solution Approach 2:
The LED filament structure itself provides the color temperature control mechanism through its modular design. Each LED module is self-contained with defined electrical connections, allowing the structure to inherently support color temperature switching without requiring external complex control systems.
3Adaptability or versatility
If multiple LED chip sets with different color temperatures are integrated, then color temperature versatility is improved, but manufacturing complexity increases
Solution Approach 1:
The filament substrate is designed as a universal platform that can accommodate multiple types of LED chips with different color temperatures. This multi-functional substrate design allows the same basic structure to support various LED configurations, achieving color temperature versatility without proportionally increasing manufacturing complexity.
Solution Approach 2:
Different sections of the filament are assigned specific LED chip types with particular color temperature characteristics. This local differentiation allows precise control over color temperature distribution along the filament while maintaining a relatively simple overall manufacturing process through standardized modular assembly.
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 convenient, low-cost switching of color temperatures through a simple and integral LED filament structure, improving user experience and reducing operational complexity.
Implementation Method 1
a first fluorescent glue covering all the first LED chips... a second fluorescent glue covering all the second LED chips... the first fluorescent glue and the second fluorescent glue may have different color temperatures
Implementation Method 2
the cavity may be filled with gas for heat dissipation
Data Source
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AI summary
The present disclosure relates to a light emitting diode (LED) filament lamp with a variable color temperature, including a lamp cap, a mounting piece connected to the lamp cap, a casing connected to the mounting piece, a stem arranged in the casing, an LED filament arranged on the stem, a dual in-line package (DIP) switch connected to the stem, and a driving power supply connected to the DIP switch. The casing and the stem are sealingly connected to form a closed cavity, and the LED filament is located inside the cavity. The LED filament includes a substrate, a first pin arranged at one end of the substrate, a second pin arranged at the other end of the substrate, a first LED chip set arranged on the substrate, and a second LED chip set arranged on the substrate. In the LED filament lamp with a variable color temperature provided by the present disclosure, the LED filament is of an integral structure. Through the arrangement of the DIP switch or a control switch, the first pin and the second pin can switch a positive pole or a negative pole of an output terminal of the driving power supply, thereby realizing switching of different color temperatures.