LED Light Irradiation Device with Guided Cooling-Leak Detection
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Solution Overview
Problem
Light irradiation devices using LEDs as a light source face issues with cooling medium leakage, which can lead to short circuits and damage due to incomplete sealing at connection sections, and existing detection methods are inadequate for early detection of such leaks.
Innovation Solution
A light irradiation device with a cylindrical light source supporter featuring flow grooves on its outer wall surface to guide cooling medium leaks to a reservoir, equipped with a detector to safely detect liquid accumulation, preventing damage by stopping power supply or initiating removal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If cooling medium flow channel is provided inside light source supporter, then LED temperature is controlled and luminous efficiency is improved, but cooling medium may leak through connection sections causing short circuit and device damage
Solution Approach 1:
A flow groove is introduced as an intermediary channel on the outer wall surface of the light source supporter to intercept and guide leaked cooling medium away from wiring patterns and LED elements. This mediator prevents direct contact between the leaked liquid and critical electrical components, resolving the contradiction by maintaining both cooling function and device reliability.
Solution Approach 2:
The flow groove is pre-configured on the outer wall surface before leakage occurs, creating a predetermined safe path for any potential cooling medium leakage. This preliminary action ensures that even if sealing at connection sections fails, the leaked medium will be automatically directed to a safe discharge location away from electrical components.
2Reliability
If O-rings or liquid leakage prevention treatments are applied at connection sections, then leakage is reduced, but complete sealing is difficult to achieve and O-rings deteriorate over time
Solution Approach 1:
The invention extracts the sealing function from the connection sections by providing a separate flow groove system that handles leakage independently. Instead of relying entirely on O-rings at connection sections, the flow groove extracts and redirects any leaked medium, reducing dependence on deteriorating sealing components and extending overall system durability.
Solution Approach 2:
The invention changes the approach from preventive sealing (relying on O-ring integrity) to permissive drainage (allowing controlled leakage through flow grooves). This parameter change in leakage management strategy reduces stress on sealing components and extends their service life while maintaining device reliability.
3Reliability
If cooling medium leaks onto outer wall surface during operation, then short circuit occurs in wirings supplying power to LEDs, but early detection mechanisms are inadequate
Solution Approach 1:
The flow groove acts as an intermediary that集中s leaked cooling medium to a specific discharge location away from electrical components. By concentrating the leakage at a controlled point rather than allowing random distribution on the outer wall surface, the flow groove enables more effective leakage detection and prevents electrical short circuits.
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 device effectively and safely detects cooling medium leaks, preventing damage to the device and ensuring safe operation by guiding leaks away from wiring patterns and detecting them early.
Implementation Method 1
the first end of the light source supporter is located at a position downward in the vertical direction relative to a second end of the light source supporter, the reservoir being disposed at the first end in the axial direction
Implementation Method 2
a detector that is configured to allow the liquid stored in the reservoir to be detectable
Implementation Method 3
a channel that is formed inside the light source supporter to allow cooling medium to flow through
Data Source
AI summary
Provided is a light irradiation device capable of safely detecting liquid leakage in the occurrence of the liquid leakage. A light irradiation device includes a light-emitting element, a cylindrical light source supporter having an outer wall surface on which the light-emitting element is disposed, a flow groove formed on the outer wall surface in an axial direction of the light source supporter, a reservoir that is communicated to the flow groove at a first end of the light source supporter in the axial direction and that is configured to allow liquid to be stored, and a detector configured to detect the liquid stored in the reservoir. The first end of the light source supporter is located at a position downward in the vertical direction relative to a second end of the light source supporter, the reservoir being disposed at the first end in the axial direction thereof.