LED Lighting Device With Flexible Membrane for Thermal Transfer
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Solution Overview
Problem
LED lighting devices for cultivated surfaces have reduced thermal energy transfer due to their low infrared emission, which can hinder plant growth, and existing solutions fail to effectively address this issue while maintaining energy efficiency and longevity.
Innovation Solution
An LED lighting device with a heat sink and a flexible, thermally conductive membrane sandwich structure between the LED board and a metal support, allowing efficient heat transfer from the LEDs to the support and then to the environment, combined with optical elements for directed light distribution, and a seal system for humid environments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If LED lights are used for cultivated surfaces, then energy consumption is reduced and average life is extended, but thermal energy transfer to the cultivated surface is significantly reduced
Solution Approach 1:
A reflective element is introduced as an intermediary component positioned between the LED light source and the cultivated surface. This reflective element redirects thermal radiation from the LED towards the cultivated surface, mediating the heat transfer process while maintaining the energy efficiency benefits of LED technology
Solution Approach 2:
The patent converts the harmful effect of reduced thermal energy transfer (which hinders plant growth) into a beneficial effect by using the reflective element to redirect thermal radiation. The previously insufficient heat transfer becomes adequate for plant cultivation needs while preserving LED energy efficiency
2Use of energy by moving object
If LED lights with low infrared emission are used, then energy savings are achieved, but plant growth stimulation is hindered
Solution Approach 1:
The reflective element acts as a mediator that captures thermal radiation from the LED and redirects it toward the cultivated surface, ensuring that plants receive adequate thermal energy for growth processes while the LED continues to operate with low energy consumption
Solution Approach 2:
The patent changes the thermal radiation distribution parameters by introducing the reflective element, which modifies the direction and intensity of heat transfer to the cultivated surface, thereby optimizing conditions for plant growth without altering the LED's energy consumption characteristics
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
Enhances thermal energy transfer to the cultivated surface, maintaining energy efficiency and longevity, while preventing mechanical stress from thermal expansion and allowing use in humid conditions, thus promoting plant growth.
Implementation Method 1
a flexible, thermally conductive membrane sandwich structure between the LED board and a metal support, allowing efficient heat transfer from the LEDs to the support
Implementation Method 2
heat sink 4... on the side opposite to the one facing the lighting group 6, provides for a plurality of spaced slats 11
Implementation Method 3
heat sink 4
Data Source
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AI summary
An LED lighting device (1) for the irradiation of a cultivated surface comprises a support (26) made of a thermally conductive material, optical bodies (72), a thin and flexible membrane (52) and an LED board (14), superimposed on and in contact with the membrane (52), configured so that each LED faces the membrane and is aligned with the optical body (72) thereof. The configuration of the device improves the thermal transfer towards the cultivated surface.