Sensor Housing Heat Sink Radial Dissipation Thermal Isolation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
LED luminaires face challenges in thermal management, as sensors and components generate heat, leading to potential damage and performance degradation, especially when temperatures exceed 85°C, and thermal energy can induce noise in sensors.
Innovation Solution
The integration of a heat sink within sensor housings and modules that are thermally isolated from other heat-generating components in the luminaire, using structures like fins, projections, and tabs for effective heat dissipation and insulation, maintaining sensor temperatures between 25-85°C or closer to ambient temperature.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If sensors and heat-generating components are integrated in the same luminaire, then device functionality is improved, but temperature increases and sensor reliability deteriorates
Solution Approach 1:
The luminaire is segmented into distinct thermal zones: a first heat sink for LED heat dissipation, a second heat sink for driver component heat dissipation, and a third heat sink for sensor heat dissipation. These heat sinks are thermally isolated from each other, allowing each component to operate in its optimal temperature range while maintaining integrated functionality within the same luminaire housing.
2Temperature
If heat sink structures are added to dissipate sensor heat, then temperature control is improved, but device complexity increases
Solution Approach 1:
The sensor housing structure is merged with the third heat sink, integrating the sensor mounting function and heat dissipation function into a single unified component. This eliminates the need for separate sensor housing and heat sink parts, reducing assembly complexity while maintaining effective thermal management for the sensor.
3Stability of the object's composition
If thermal isolation structures are implemented, then sensor temperature stability is improved, but manufacturing complexity increases
Solution Approach 1:
Thermal isolation structures (such as thermal barriers or insulating materials) are implemented as intermediary elements between the heat-generating components (LEDs and drivers) and the sensor. These intermediaries block thermal pathways while allowing the sensor housing with integrated heat sink to be manufactured using standard processes, balancing thermal stability with manufacturing ease.
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 solution effectively dissipates heat from sensors, prevents damage, and reduces noise-induced performance issues, ensuring reliable operation of sensors within LED luminaires even at elevated temperatures.
Implementation Method 1
a heat sink in thermal communication with the housing. The heat sink is configured to dissipate heat from the sensor and/or associated electronics
Implementation Method 2
The heat sink can employ any number and design of heat dissipating structures including, but not limited to, fins, projections, tabs, splines, tines, pins, needles, or steps or any combination thereof
Implementation Method 3
the sensor housing and integrated heat sink are thermally isolated from the other heat generating elements in the luminaire
Data Source
AI summary
Sensor housings, modules, and luminaires comprising the same are provided. The sensor housings and modules set forth herein have improved heat sinking abilities for dissipating heat from a sensor while simultaneously facilitating thermal isolation of the sensor. Briefly, a sensor housing described herein comprises a cavity for housing a sensor and a heat sink. The heat sink is configured to dissipate heat from the sensor housing and thermally isolate the sensor housing from other heat generating components, such as other portions of a luminaire.