Lighting Device Control Circuit for Color Temperature and Brightness
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Solution Overview
Problem
Existing LED lighting equipment is limited in functionality, requiring multiple devices to produce cold white or warm white light and lacks advanced control over color temperature.
Innovation Solution
A lighting device with a control circuit that includes multiple control circuits to manage brightness and color temperature, utilizing chips, switches, resistors, and capacitors to adjust light emission based on AC voltage detection, allowing for multiple color temperature settings and efficient power management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple devices are used to produce cold white or warm white light, then color temperature control is achieved, but device complexity increases
Solution Approach 1:
The patent combines multiple LED chips with different color temperatures (cold white and warm white) into a single lighting device, along with integrated control circuits that can independently regulate each chip. This merging approach eliminates the need for multiple separate devices while maintaining full color temperature control capability through a unified system.
Solution Approach 2:
The lighting device incorporates multiple functions within a single unit: it can produce both cold white and warm white light, adjust brightness levels, and control color temperature transitions. The control circuits are designed to universally manage different LED chip types, enabling one device to replace multiple specialized devices.
2Device complexity
If existing LED lighting equipment is used, then device simplicity is maintained, but functionality is limited
Solution Approach 1:
The patent introduces dynamic control capabilities through control circuits that can adjust lighting parameters in real-time. The system transitions from static on/off control to dynamic regulation of brightness and color temperature, allowing the lighting device to adapt to different usage scenarios while maintaining a relatively simple overall structure.
Solution Approach 2:
The lighting device segments its lighting function by incorporating multiple independent LED chips (cold white and warm white) that can be controlled separately. This segmentation enables diverse lighting modes and color temperature adjustments without requiring a completely complex system architecture, as each chip module remains relatively simple but collectively provides enhanced functionality.
3Adaptability or versatility
If multiple devices are deployed, then color temperature options increase, but power consumption increases
Solution Approach 1:
By merging multiple LED chips into a single device with shared power management infrastructure, the patent reduces redundant power consumption that would occur with multiple separate devices. The control circuits efficiently manage power distribution to active chips only, eliminating wasted energy from inactive devices while maintaining multiple color temperature options.
Solution Approach 2:
The control circuits are designed to selectively activate only the LED chips needed for the desired lighting effect, discarding power to inactive chips. This selective power management recovers energy efficiency by avoiding simultaneous operation of all chips, allowing color temperature adjustment without proportionally increasing total 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
Enables the production of various color temperatures and brightness levels with a single device, improving functionality and reducing power consumption by managing heat dissipation effectively.
Implementation Method 1
The LED lighting device usually has a single function of turning on and turning off and controlling a certain color temperature in the LED lamps
Data Source
AI summary
A lighting device which is controllable in respect of color temperature as well as brightness has a control circuit electrically coupled to AC voltage source. The control circuit includes first and second control circuits, the first control circuit turns the light emitting device on and off and adjusts brightness of the light emitting device. The second control circuit determines whether the AC voltage source is on during a predetermined period, and if determined to be on, adjusts color temperature of the light emitting device.