Dermatological Light Device Cooling Duct
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing light emitting devices for dermatological treatments face overheating issues due to high pulse repetition rates, leading to increased housing temperatures that exceed safety limits, resulting in reduced efficacy and inconsistent treatment when trying to maintain a high speed of operation.
Innovation Solution
An improved air flow system that directs heated air away from the housing structure using a duct with a high-speed jet configuration, minimizing heat exchange and incorporating air inlet ports to maintain cooling, along with a radial fan and baffles to enhance airflow coherence and reduce housing temperature.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the pulse repetition rate is increased to improve operation speed, then productivity is improved, but the housing temperature increases exceeding safety limits
Solution Approach 1:
The patent extracts the hot air from the housing interior through a dedicated duct system that channels heated air away from the housing structure. The duct outlet is positioned to direct hot air away from user-contact surfaces, separating the heat removal function from the general housing structure and enabling high pulse repetition rates without temperature buildup.
Solution Approach 2:
The patent introduces an intermediary cooling air flow system that draws ambient air through inlet ports and directs it across critical housing surfaces. This intermediary air flow acts as a thermal buffer between the internal heat-generating components and the user-contact housing surfaces, preventing temperature transfer while allowing rapid pulsing.
2Productivity
If the pulse repetition rate is increased to reduce treatment time, then productivity is improved, but the treatment consistency deteriorates due to irregular firing intervals
Solution Approach 1:
The patent implements continuous cooling air flow through inlet ports and across housing surfaces during the entire high-speed pulsing operation. This continuous thermal management enables the system to maintain stable operating conditions and consistent housing temperatures even during rapid successive pulses, ensuring uniform treatment delivery without irregular firing intervals.
3Object-affected harmful factors
If a grid is added to the outlet vent to prevent access to internal components, then safety is improved, but the air flow capability deteriorates
Solution Approach 1:
The patent extracts the safety function from the outlet vent by providing separate inlet ports positioned away from the hot air outlet. The outlet vent can remain open for optimal air flow while the separately positioned inlet ports provide user-safe access points for cooling air intake, eliminating the need to restrict outlet flow with a grid.
Solution Approach 2:
The patent separates the air intake and exhaust functions in different spatial dimensions and locations. The inlet ports are positioned on housing surfaces away from the outlet vent, allowing the outlet to maintain full openness for optimal exhaust flow while safety is addressed through the spatial separation of air intake paths from user-contact areas.
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
Enables faster operation of the device over the skin without overheating, maintaining treatment efficacy while preventing user safety hazards from hot surfaces.
Implementation Method 1
air is moved through the housing by the fan to cool the operation of the lamp and other internal components
Implementation Method 2
The relative configuration of the duct outlet and housing structure is beneficially such that the hot air exits the handset in one or more high speed jets that minimise contact between the heated air and the surrounding housing structure
Data Source
Figure 1~2
Figure 3
Figure 4
AI summary
The present invention relates to a light emitting device for providing dermatological treatment. The present invention comprises a housing structure for housing a light emitting source, a fan and a duct. The light emitting source is arranged to emit light energy to external of the device and the fan is configured for directing air heated by operation of the light emitting source into the duct. The duct is arranged to direct heated air in an airstream pathway from an outlet port of a distal end of the duct and through an aperture in the housing structure where the housing structure and the duct are relatively arranged such that no part of the housing structure extends into the air stream pathway in order to minimise heat exchange from the heated air to the housing structure.