Temperature Detection Device for LED Modules
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Solution Overview
Problem
Existing LED modules often lack built-in temperature detection, leading to increased fabrication costs and delayed user awareness of operating temperatures, necessitating an external temperature detection device with a simplified structure and high reliability.
Innovation Solution
A temperature detection device comprising a circuit board with a temperature sensor overlapping a light source module, forming a heat conduction path, and connected via signal transmission lines to output sensing signals, potentially using a combination of flexible and rigid printed circuit boards with protective coatings for enhanced reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a built-in thermistor is added to the LED module for temperature detection, then temperature monitoring capability is improved, but fabrication cost increases
Solution Approach 1:
The temperature detection function is extracted from the LED module itself and implemented as an external detection device. The temperature sensor is placed on an external circuit board rather than being integrated into the LED module, thereby avoiding the need to increase fabrication costs while still achieving temperature monitoring capability.
Solution Approach 2:
An external circuit board serves as an intermediary between the LED module and the temperature sensor. The circuit board positions the temperature sensor in close proximity to the LED module without requiring integration, enabling temperature detection while maintaining manufacturing simplicity and cost-effectiveness.
2Measurement precision
If the temperature sensor is placed close to the light source module for accurate detection, then measurement precision is improved, but the device structure becomes more complex
Solution Approach 1:
The circuit board itself serves the dual function of supporting the temperature sensor and providing the mounting structure. The temperature sensor utilizes the circuit board's physical presence and thermal properties to achieve accurate measurement without requiring additional complex positioning mechanisms or structures.
3Ease of operation
If the temperature detection device is made external to the electronic device, then ease of operation is improved by avoiding interference with internal components, but heat conduction efficiency may be reduced
Solution Approach 1:
The temperature detection is moved to an external dimension - the circuit board is positioned adjacent to the LED module rather than inside it. This spatial arrangement allows the temperature sensor to detect heat through the circuit board material without being embedded within the LED module, maintaining measurement accuracy while preserving internal component arrangement flexibility.
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 quick and accurate temperature measurement of light source modules, avoiding interference with internal device components and reinforcing structural strength to prevent external damage and inaccuracies.
Implementation Method 1
the temperature sensor and the light source module forms a heat conduction path
Data Source
AI summary
A temperature detection device includes a circuit board, a temperature sensor, and at least one signal transmission line. The temperature sensor is disposed on the circuit board and overlapped with a light source module, and the temperature sensor and the light source module forms a heat conduction path. The signal transmission line is connected to the circuit board to output a sensing signal of the temperature sensor.