LED Illumination System Centralized DC Power Supply
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Solution Overview
Problem
Conventional LED illumination systems require multiple DC power supplies, leading to increased costs, reduced lifespan due to heat generation, and safety hazards during maintenance, as the power supplies are often integrated with LEDs and lack effective heat dissipation and air circulation.
Innovation Solution
An LED illumination system with a single DC power supply connected to multiple LED lamp sets via power circuits, utilizing a transformer, AC/DC converter, pulse width modulator, and adjustable components to manage power distribution and separate the power supply from the LEDs, reducing heat impact and enhancing safety.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple DC power supplies are provided for multiple LED illumination lamp sets, then each LED set can operate independently, but the cost increases and the system complexity increases
Solution Approach 1:
The patent merges multiple power supply functions into a single DC power supply unit that can serve multiple LED illumination lamp sets simultaneously. This central化的 power supply design reduces the total number of power supplies from multiple to one, thereby reducing cost and system complexity while maintaining the ability to independently control each LED set through individual power circuits with adjustable resistors.
2Shape
If DC power supply is positioned close to LEDs, then the system structure is compact, but heat generated by DC power supply affects lighting efficiency of LEDs
Solution Approach 1:
The patent extracts the DC power supply from the immediate vicinity of the LED illumination lamp sets and positions it separately. This separation removes the heat source (DC power supply) from close proximity to the LEDs, thereby preventing heat-induced reduction in lighting efficiency while still maintaining a relatively compact overall system structure through centralized power distribution.
3Stability of the object's composition
If DC power supply is located in LED illumination lamp set, then the system is integrated, but air circulation is undesirable and heat dissipation becomes difficult
Solution Approach 1:
The patent segments the system into two distinct parts: the DC power supply unit and the LED illumination lamp sets. By separating these functional modules, the power supply can be positioned in a location with better air circulation for effective heat dissipation, while the LED lamp sets remain intact as functional units. This segmentation maintains system integration at the functional level while improving thermal management.
4Productivity
If DC power supply is installed on ceiling, then the illumination system is complete, but replacement is difficult and fire safety risk increases
Solution Approach 1:
The patent introduces power circuits as intermediary components between the centralized DC power supply and the LED illumination lamp sets. These power circuits can be designed with detachable connections, allowing the LED lamp sets to be easily removed and replaced without disturbing the ceiling-mounted power supply. This intermediary design maintains system completeness while significantly improving ease of repair and replacement.
5Use of energy by moving object
If DC power supply is connected to AC power source, then the system can operate, but users face electric shock hazard during maintenance
Solution Approach 1:
The patent extracts the AC-to-DC power conversion function into a separate, permanently installed DC power supply unit that is professionally wired to the AC source. This separates the high-voltage AC conversion function from the user-accessible LED lamp sets, allowing users to replace LED lamps without exposing themselves to electric shock hazards from AC power connections. The power conversion capability is preserved in the isolated power supply unit.
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
This configuration reduces material and operational costs, minimizes heat-induced efficiency loss, and prevents electric shock during maintenance by isolating the power supply, while allowing adjustable luminosity through pulse width modulation.
Implementation Method 1
a DC power supply (20) which provides sufficient electric power for the LED illumination lamp sets (10)
Implementation Method 2
It employs Epitaxy as a photoelectric element to generate light via electro luminescence transformation
Implementation Method 3
at least two power circuits (30) corresponding to the LED illumination lamp sets (10), wherein the DC power supply (20) is connected to the LED illumination lamp sets (10) via the power circuits (30)
Data Source
AI summary
An LED illumination system includes a DC power supply, at least two LED illumination lamp sets and at least two power circuits corresponding to the LED illumination lamp sets. The DC power supply provides sufficient electric power for the LED illumination lamp sets and is connected to the LED illumination lamp sets via the power circuits. The invention supplies electric power required by the LED illumination lamp sets via a single DC power supply without an extra DC power supply, hence the cost is lower. Moreover, the DC power supply is located remote from the LED illumination lamp sets, hence high temperature generated by the DC power supply does not affect lighting and lifespan of the LED illumination lamp sets. The hazard of electric shock by inadvertently touching the AC power source while replacing lamps in the LED illumination lamp sets can also be avoided to improve safety.