Streetlight Luminaire Canopy Venting for Wireless Heat Dissipation
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Solution Overview
Problem
Existing luminaires for streetlights, particularly those using LED systems, face challenges in efficiently managing heat dissipation and integrating wireless connectivity without compromising performance and efficiency.
Innovation Solution
The luminaire design incorporates a canopy enclosure that houses an antenna system and wireless module, with heatsinks and air inlets/outlets for thermal management, and a planar element for heat distribution, enhancing heat dissipation and wireless functionality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a wireless module and antenna system are integrated into the luminaire, then wireless connectivity functionality is improved, but heat dissipation becomes more difficult due to additional heat sources and enclosed space
Solution Approach 1:
The wireless module and antenna system are nested within the canopy enclosure that already exists for housing the light source. The canopy enclosure serves dual purposes: providing structural support/protection for the light source and creating a controlled environment for the wireless components. This nesting approach allows integration of additional functionality without requiring separate external housing, thereby managing heat within a unified thermal management framework.
Solution Approach 2:
A dedicated heatsink is introduced as an intermediary thermal management component specifically for the wireless module. This heatsink acts as a mediator between the wireless module (heat source) and the surrounding air/enclosure, facilitating efficient heat transfer. The heatsink provides a controlled thermal pathway that prevents heat buildup around the wireless components while maintaining their operational integrity.
2Reliability
If the canopy enclosure is designed to house wireless components, then wireless signal transmission is improved through better shielding and positioning, but heat accumulation increases due to the enclosed volume
Solution Approach 1:
The canopy enclosure is designed with continuous thermal management features including heatsinks with extended surfaces and strategically positioned air inlets/outlets. These features ensure continuous heat dissipation throughout operation, preventing heat accumulation even as the enclosure provides stable housing for wireless components. The continuous thermal action maintains reliable wireless signal transmission without energy loss from heat buildup.
Solution Approach 2:
The heatsink design utilizes dimensional extension by incorporating fins and extended surfaces that project into the canopy enclosure volume. This dimensional approach increases the effective heat dissipation surface area without compromising the enclosed volume needed for wireless component housing and signal transmission. The extended thermal surfaces operate in the spatial dimension to manage heat while preserving the functional enclosure.
3Temperature
If heatsinks with extended fins are used for thermal management, then heat dissipation efficiency is improved, but the internal volume available for wireless components is reduced
Solution Approach 1:
The canopy enclosure is designed with localized thermal management zones where heatsinks with extended fins are strategically positioned in specific areas. This local quality approach concentrates heat dissipation features in regions optimized for thermal performance while preserving other areas of the enclosure for wireless component housing. The differentiated spatial zones allow simultaneous achievement of efficient heat dissipation and adequate volume for wireless components.
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 design effectively dissipates heat and provides reliable wireless connectivity, improving thermal management and functionality of streetlight luminaires.
Implementation Method 1
a first heatsink comprising a first set of fins... a second heatsink, at least partly housed by the canopy enclosure, in thermal contact with the wireless module
Implementation Method 2
one or more air inlets, for allowing the passage of external air into the canopy, and one or more air outlets for allowing the passage of internal air, being external air drawn through the air inlets and heated by the first and/or second heatsinks
Data Source
Figure 1
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AI summary
An outdoor luminaire with wireless functionality. A canopy is coupled to an uppermost surface or portion of a luminaire housing containing a light source. The volume bounded by the canopy and the luminaire housing defines a canopy enclosure. This canopy enclosure encloses a portion of a first heatsink (for the luminaire housing), a wireless module, an antenna system and a second heatsink for the wireless module. The canopy also comprises one or more air inlets and one or more air outlets, to allow air to flow into and out of the canopy enclosure. The first heatsink comprises one or more fins that extend toward an upper portion of the canopy.