Solanaceous Seedling Lighting Device Suppressing Intumescence
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Solution Overview
Problem
Cultivating Solanaceae plant seedlings, such as tomatoes, in a closed environment using artificial light sources often results in growth disorders like intumescence due to the use of ultraviolet rays, which can be harmful and cause material deterioration.
Innovation Solution
A cultivation apparatus and method utilizing an LED lighting device that predominantly emits light in the blue spectrum, with a photon flux density peak in the 400-500 nm range, and a secondary peak in the 500-700 nm range, minimizing ultraviolet emission to suppress intumescence and promote healthy seedling growth.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If ultraviolet rays are used to suppress growth disorders in Solanaceae seedlings, then intumescence can be suppressed, but harmful effects on human body, plants, and material deterioration occur
Solution Approach 1:
The patent converts the harmful ultraviolet component into a beneficial blue light component (400-500nm) that maintains the ability to suppress intumescence while eliminating the harmful effects. The blue light serves as a substitute that provides the necessary physiological benefits without the damaging side effects of ultraviolet radiation.
Solution Approach 2:
The patent changes the wavelength parameter of the light source from ultraviolet range to blue light range (400-500nm). This parameter modification allows the light to maintain its effectiveness in suppressing intumescence while avoiding the harmful effects associated with ultraviolet wavelengths.
2Reliability
If LED lighting with blue spectrum is used to suppress intumescence, then seedling health is improved, but light spectrum optimization is required
Solution Approach 1:
The patent specifies precise wavelength parameters (400-500nm blue light) and intensity ratios to optimize the light spectrum. By defining these parameters, the patent achieves effective intumescence suppression and healthy seedling growth while providing clear guidelines for implementation.
Solution Approach 2:
The patent employs a composite lighting system that combines blue LED lights with appropriate phosphors or filters to achieve the desired spectrum. This composite approach allows for precise control over the light output while maintaining system feasibility.
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 effectively suppresses intumescence and allows for the stable cultivation of high-quality Solanaceae plant seedlings by optimizing light spectrum and reducing ultraviolet exposure, improving seedling health and growth conditions.
Implementation Method 1
utilizing an LED lighting device that predominantly emits light in the blue spectrum, with a photon flux density peak in the 400-500 nm range
Implementation Method 2
a light source that constitutes a spectrum indicating a wavelength range A of 400 nm or more and less than 500 nm and a wavelength range B of 500 nm or more and less than 700 nm
Data Source
Figure 1a~1b
Figure 2a~2b
Figure 3~4
AI summary
A cultivation apparatus for cultivating seedlings of Solanaceae plants equipped with a lighting device, wherein the lighting device has a light source that constitutes a spectrum showing a wavelength range A of 400 nm or more and less than 500 nm and a wavelength range B of 500 nm or more and less than 700 nm; wherein the photosynthetic photon flux density in the wavelength range A is 100 ymol/m2/sec or more; and wherein, when the total of the photosynthetic photon flux density in the wavelength range A and the photosynthetic photon flux density in the wavelength range B is 100%, the photosynthetic photon flux density in the wavelength range A is 70% or more and less than 99%.