Underwater LED Light With Rotatable Filter Ring And Metal Core Cooling
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Solution Overview
Problem
Underwater video lighting devices struggle with color balance issues due to the competition between artificial light and ambient light, particularly at depths where red light is depleted, and lack convenient multi-filter manual selection and efficient heat dissipation, leading to potential overheating and reliability concerns.
Innovation Solution
A powerful underwater LED light with a rotatable front filter ring for adjustable filtration, a metal core circuit board for efficient heat dissipation, and a self-contained assembly design that allows easy disconnection for FAA compliance, featuring interchangeable filter rings and a dual LED array for enhanced flexibility and cooling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a powerful LED light source is used to produce 4000 lumens of flood light, then illumination intensity is improved, but heat generation increases causing overheating concerns
Solution Approach 1:
The patent converts the harmful heat generated by the LED array into a beneficial cooling mechanism by using the heat-generating LED assembly as part of the thermal management system. The metal core board and surrounding metal structure act as heat sinks, transferring heat from the LEDs to the water environment, thereby dissolving the contradiction between high light output and heat management
Solution Approach 2:
The patent introduces a metal core board and metal housing as intermediary thermal transfer components between the LED heat source and the water cooling medium. These intermediaries efficiently conduct heat away from the LEDs, resolving the thermal management issue while maintaining high illumination output
2Adaptability or versatility
If multiple filters are included for color balance adjustment, then adaptability is improved, but device complexity increases
Solution Approach 1:
The patent implements a rotatable filter ring that allows dynamic selection of different filters (red, green, blue, yellow, clear) to match different water conditions and ambient lighting. This dynamic adjustment mechanism provides versatility in color balance while maintaining a relatively simple overall device structure through the use of a single rotating component
Solution Approach 2:
The filter ring serves multiple functions: it provides various color filters for different water conditions, acts as a structural component of the housing, and enables easy user adjustment. This multi-functionality reduces the need for separate mechanisms for each filter, thereby reducing overall device complexity while maintaining high adaptability
3Adaptability or versatility
If the LED array is positioned off-center to enable filter placement, then adaptability is improved, but manufacturing precision requirements increase
Solution Approach 1:
The patent deliberately positions the LED array off-center within the housing to create an asymmetric light path that allows filter placement in the center. This asymmetric design, while requiring precise manufacturing, enables the integration of multiple filters and the rotatable filter ring mechanism, ultimately improving adaptability for different diving conditions
4Ease of operation
If the light unit is made compact and lightweight, then ease of operation is improved, but heat dissipation efficiency decreases
Solution Approach 1:
The patent uses a thin metal housing that serves dual purposes: providing a compact, lightweight structure for portability while simultaneously acting as a heat sink and thermal transfer path to water. The thin metal walls efficiently conduct heat from the LED array to the surrounding water, resolving the contradiction between compact size and heat dissipation efficiency
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 provides improved color balance, increased light output, extended battery life, efficient heat management, and enhanced reliability by allowing easy filter adjustments and disconnection for safe air travel, while maintaining a compact and lightweight design.
Implementation Method 1
The light source of the device is a very tight cluster of LEDs, which may be sixteen in number
Implementation Method 2
The tight LED array generates considerable heat, making the LED mounting board and surrounding areas hotter than would be the case if the LEDs were spread around the entire face of the housing. To dissipate the heat the LEDs are mounted onto a metal core board, and the face of the unit preferably is mostly metal and contacts the LED board. This provides an efficient heat sink for the LED array
Data Source
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AI summary
An underwater diving light has a rotatable front filter ring for selecting light filtration as needed for underwater still or video photography conditions. The filter ring is removable and interchangeable with different rings. Another important feature is efficient cooling of the LEDs and other internal electronics of the diving light assembly. The water is in contact with a metallic front face that conducts heat directly away from a metal core circuit board carrying the LED array or arrays. In one form of the diving light water channels are provided so that the ambient water can enter the assembly to spaces behind the LCD circuit board to efficiently cool the LEDs and associated electronics. The front plate assembly can be removable, for rinsing the internal cooling cavities, for interchange with different front face assemblies, and for air travel when the LCDs must be removed from driving electronics for safety concerns.