Semiconductor Light Source Dew Condensation Control
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Solution Overview
Problem
Illuminating devices with semiconductor light sources face challenges in preventing dew condensation, which can affect the performance and lifespan of the light sources, especially in varying ambient environments.
Innovation Solution
The implementation of a temperature control system that includes a dew condensation determination unit and a temperature control mode selection unit, which adjusts the temperature of the semiconductor light sources to a higher set point within their usable limits when dew condensation is predicted, based on operational priorities and source characteristics, to prevent condensation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If the temperature of the semiconductor light source is increased to suppress dew condensation, then dew condensation prevention is improved, but the lifespan and performance of the light source deteriorate due to excessive heat
Solution Approach 1:
The patent implements dynamic temperature control by switching between two temperature control modes: a first mode that maintains a lower temperature for optimal light source performance, and a second mode that maintains a higher temperature for dew condensation prevention. The control unit dynamically selects between these modes based on real-time detection of dew condensation conditions, allowing the system to adapt temperature settings to current environmental conditions rather than using a fixed temperature setting.
Solution Approach 2:
The patent changes the temperature parameter dynamically based on environmental conditions. The control unit monitors temperature and humidity conditions and adjusts the temperature control mode accordingly, switching between a lower temperature setting (first control mode) and a higher temperature setting (second control mode). This parameter change allows the system to prevent dew condensation when necessary while minimizing thermal stress on the light source during normal operation.
2Device complexity
If a simple temperature control system is used, then device complexity is reduced, but the ability to prevent dew condensation under varying ambient conditions deteriorates
Solution Approach 1:
The patent incorporates a feedback mechanism where the control unit continuously monitors temperature and humidity conditions and adjusts the temperature control mode based on this feedback. The system detects whether dew condensation is likely to occur and automatically switches between control modes in response to these conditions, creating a closed-loop control system that adapts to changing ambient environments without requiring complex manual intervention.
Solution Approach 2:
The temperature control system operates autonomously by automatically detecting dew condensation conditions and switching between control modes without user intervention. The control unit self-adjusts the temperature settings based on environmental conditions, eliminating the need for complex user programming or manual adjustment while maintaining effective dew condensation prevention.
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
This approach effectively suppresses or prevents dew condensation, thereby maintaining the light sources' performance and extending their lifespan while ensuring optimal operational conditions.
Implementation Method 1
a temperature control unit that is disposed on the semiconductor light source and configured to control a temperature of the semiconductor light source to a desired temperature
Data Source
AI summary
An illuminating device includes: a semiconductor light source; a temperature control unit disposed on the light source for controlling a temperature of the light source to a desired temperature; a dew condensation determination unit for determining whether dew condensation may occur based on at least a temperature associated with the illuminating device and an ambient environment condition of the illuminating device; and a temperature control mode selection control unit for selecting, as a temperature control mode of the temperature control unit, a dew condensation suppression mode in which the temperature control unit has a temperature higher than a predetermined temperature and equal to or less than an upper limit of a usable temperature of the light source, based on priority items of operational control of the illuminating device and characteristics of the light source, to temperature-control the temperature control unit, when the determination unit determines that dew condensation may occur.