LED Lighting Sheet Layout for Uniform Growth Light and Heat
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Solution Overview
Problem
Current LED lighting systems for animal and plant growth factories face challenges in achieving high yield due to variations in light intensity and heat distribution, leading to nonconforming products and reduced efficiency.
Innovation Solution
An LED lighting sheet with an array of LED chips, a controller for constant voltage application, and a protective film configuration that ensures uniform light distribution and heat management, reducing variations in light intensity and increasing the accumulated light per unit time.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If LED chips are arranged in arrays to increase total luminous flux, then the accumulated light per unit time increases, but variations in light intensity occur leading to nonconforming products
Solution Approach 1:
The LED lighting sheet divides the LED chip array into multiple independent string units, where each string comprises multiple LED chips connected in series. This segmentation allows each string to be controlled independently, enabling uniform light distribution across the entire array while maintaining high total luminous flux output.
Solution Approach 2:
The patent applies different characteristics to different parts of the LED array by configuring multiple strings with potentially different numbers of LED chips or different luminous flux characteristics. This local differentiation ensures that each region of the lighting sheet contributes appropriately to achieve overall uniform light distribution while maximizing total output.
2Power
If multiple LED chips are arranged in series and parallel to increase luminous flux, then total light output increases, but heat distribution becomes uneven
Solution Approach 1:
By segmenting the LED array into multiple independent string units connected in parallel, the patent distributes heat generation across separate thermal zones. Each string acts as an independent thermal management unit, preventing localized heat accumulation and ensuring more uniform heat distribution across the entire LED lighting sheet.
3Reliability
If LED chips are covered with protective film, then LED chips are protected, but light transmission may be affected
Solution Approach 1:
The patent employs a protective film that covers the LED chips while maintaining high light transmission. This thin film provides mechanical protection and environmental sealing to the LED chips without significantly attenuating the light output, thus protecting the LEDs while preserving illumination intensity.
4Volume of moving object
If the LED lighting sheet is made thin for compact installation, then space efficiency improves, but heat dissipation becomes difficult
Solution Approach 1:
The segmented string configuration allows heat to be distributed across multiple small thermal zones rather than concentrated in a single thick structure. This segmentation enables effective heat dissipation even in thin profiles by creating multiple thermal pathways and reducing thermal resistance in each segment.
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 enhances growth efficiency by maintaining high yield while minimizing nonconforming products through uniform light distribution and efficient heat management, improving the overall productivity of animal and plant growth.
Implementation Method 1
an array of LED chips, wherein a total luminous flux is 3000 lm or more
Data Source
AI summary
An LED lighting sheet (20) for animal/plant growth includes an array of LED chips (21) and has a total luminous flux of 3000 lm or more.