LED Light Source Driving Circuit with Current Allocation Unit
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Solution Overview
Problem
Conventional LED bulbs can only be controlled for on/off or brightness using a standard switch, lacking the ability to adjust color, requiring a special dimmer or remote controller.
Innovation Solution
A light source driving circuit that includes a rectifier, power converter, and a current allocation unit, allowing for the adjustment of current through multiple LED sources of different colors, enabling control of both brightness and color using a conventional on/off switch.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a conventional on/off switch is used to control LED bulbs, then the control is simple and reliable, but the functionality is limited to only on/off or brightness adjustment without color control
Solution Approach 1:
The patent applies multi-functionality by integrating multiple LED light sources of different colors (e.g., warm white and cold white LEDs) within a single bulb, along with a current allocation unit that can dynamically adjust current distribution. This allows the bulb to perform multiple functions - brightness control and color temperature adjustment - using a single conventional switch, eliminating the need for separate dimmers or remote controllers for color control.
Solution Approach 2:
The current allocation unit dynamically adjusts the current distribution between different colored LED sources based on control signals from the conventional switch. This dynamic current allocation enables the bulb to transition between different color temperatures and brightness levels, transforming a static lighting device into a dynamic, adaptable system that responds to simple switch inputs.
2Adaptability or versatility
If multiple LED sources of different colors are integrated into a single bulb, then color adjustment capability is improved, but the device complexity increases
Solution Approach 1:
The patent merges multiple LED light sources of different colors and the current allocation unit into a single integrated LED bulb module. By combining these components into one unified device, the patent reduces the need for multiple separate devices (such as individual bulbs paired with external dimmers or color controllers), thereby managing overall system complexity despite the increased internal integration.
Solution Approach 2:
The current allocation unit operates autonomously within the bulb, automatically adjusting current distribution between different LED sources based on control signals. This self-service capability eliminates the need for external complex control systems or remote controllers, as the bulb internally manages its own color and brightness adjustment, simplifying the external control architecture.
3Adaptability or versatility
If a special dimmer or remote controller is used to adjust color, then color control capability is improved, but the ease of operation deteriorates
Solution Approach 1:
The patent enables a conventional on/off switch to perform multiple functions - not only turning the bulb on/off but also controlling brightness and color temperature. By designing the LED bulb with integrated multi-color LED sources and a smart current allocation unit, the system allows a single switch to access diverse lighting modes and color temperatures, eliminating the need for specialized dimmers or remote controllers and restoring simplicity to the control interface.
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 a user to adjust the brightness and color of LED bulbs using a conventional switch without the need for a special dimmer or remote controller, providing flexible control over LED lighting.
Implementation Method 1
a rectifier operable for rectifying a voltage from a power source and providing a rectified voltage
Implementation Method 2
a power converter coupled to the rectifier and operable for receiving the rectified voltage and providing an output current
Implementation Method 3
a first light source having a first color, a second light source having a second color
Implementation Method 4
light-emitting diodes (LED)
Data Source
AI summary
A light source driving circuit includes a rectifier operable for rectifying a voltage from a power source and providing a rectified voltage, a power converter coupled to the rectifier and operable for receiving the rectified voltage and providing an output current, and a light source module coupled to the power converter and powered by the output current. The light source module includes a first light source having a first color, a second light source having a second color, and a current allocation unit coupled to the first light source and the second light source. The current allocation unit is operable for adjusting a current through the first light source and a current through the second light source based on the output current.