LED Light Source Module with Characteristic Setting Unit for Current Control
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Solution Overview
Problem
Existing lighting systems using light emitting diodes (LEDs) face challenges in maintaining constant current and voltage due to variations in LED characteristics and connections, leading to potential overcurrent and reduced lifespan, and existing solutions either require complex wiring or increase manufacturing costs.
Innovation Solution
A light source module with a substrate for mounting LEDs, including electrical connecting terminals and a characteristic setting unit that presets electrical characteristics, and a lighting apparatus with a voltage conversion unit, detection units, and output control to manage current and voltage based on detected characteristics, allowing for stable operation and simple wiring.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the number of LEDs and connection arrangement are fixed in design to achieve constant light output, then the light source module can provide stable illumination, but it cannot adapt to technological improvement and variations in LED characteristics
Solution Approach 1:
The patent applies dynamics by making the light source module configurable through a control unit that can adjust operating parameters based on detected LED characteristics. The system transitions from a static fixed design to a dynamic adaptable system where the control unit modifies current and voltage settings according to actual LED performance, enabling both stability and adaptability.
Solution Approach 2:
The patent implements parameter changes by allowing the control unit to modify electrical parameters (current, voltage, power) based on detected LED characteristics. The system detects actual LED forward voltage and current values, then adjusts operating parameters accordingly to maintain constant light output despite variations in LED characteristics or technological improvements.
2Reliability
If a notification terminal and complex control system are added to prevent breakdown from excessive current, then overcurrent protection is achieved, but device complexity and manufacturing cost increase
Solution Approach 1:
The patent merges the notification terminal function with the existing control unit in the lighting apparatus. Instead of adding a separate complex notification terminal system, the control unit integrates multiple functions including LED characteristic detection, operating parameter adjustment, and overcurrent protection. This consolidation reduces wiring complexity while maintaining comprehensive protection and control capabilities.
Solution Approach 2:
The control unit is designed as a universal multi-functional device that performs LED characteristic detection, adjusts operating parameters for constant light output, provides overcurrent protection, and manages power consumption. This multi-functionality eliminates the need for separate specialized components, reducing overall device complexity and manufacturing cost.
3Use of energy by stationary object
If the lighting apparatus applies fixed voltage based on design specifications, then power consumption is optimized, but overcurrent occurs when LED characteristics vary
Solution Approach 1:
The patent implements feedback by having the control unit detect actual LED characteristics (forward voltage, current values) and use this information to adjust operating parameters. The system continuously monitors LED performance and modifies power delivery accordingly, ensuring both optimized power consumption and accurate current control that prevents overcurrent conditions.
Solution Approach 2:
The patent applies preliminary action by having the control unit detect LED characteristics before applying full operating voltage. The system first measures actual LED forward voltage and current values, then uses this preliminary information to calculate and set appropriate operating parameters, preventing overcurrent before it occurs while optimizing power consumption.
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 stable operation of LED modules by adjusting current and voltage based on detected characteristics, preventing overcurrent and reducing manufacturing costs, while allowing for easy integration with different LED types and connections.
Implementation Method 1
a light source unit including a plurality of light emitting diodes connected in series
Data Source
AI summary
A light source module includes a substrate unit for mounting multiple light emitting diodes thereon to electrically connecting them; first and second electrical connecting terminals for supplying a current to the light emitting diodes based on a voltage applied from outside the substrate unit; and a characteristic setting unit for presetting characteristic information corresponding to a electrical characteristic of the light emitting diodes. Further, the light source module includes a third electrical connecting terminal for outputting a setting signal based on the characteristic information preset in the characteristic setting unit, and the characteristic setting unit is connected at least between the third and first electrical connecting terminals or between the third and second electrical connecting terminals, and the characteristic setting unit responds to a set-up power inputted from the third electrical connecting terminal to generate the setting signal.