Modular Troffer Fixture Heat Sink with Conduit
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Solution Overview
Problem
Troffer-style lighting fixtures face challenges in managing heat dissipation, especially with high-power LEDs, as modern structures have reduced plenum space and increased temperatures, making it difficult to efficiently cool the fixtures.
Innovation Solution
A modular troffer-style lighting assembly featuring an elongated heat sink with a conduit for electrical conductors and a reflector with parallel rails for structural support, allowing for efficient thermal dissipation and easy connection of multiple units, with end caps housing electronics for power management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If heat sink is exposed to ambient environment for thermal dissipation, then thermal management is improved, but insulation integrity may be compromised
Solution Approach 1:
The housing is divided into multiple sections: an exposed heat sink portion for thermal dissipation, an insulated portion for thermal protection, and a transition portion connecting them. This segmentation allows different parts of the housing to serve different thermal functions simultaneously.
Solution Approach 2:
Different portions of the housing have different thermal properties - the heat sink portion is thermally conductive and exposed to ambient air for heat dissipation, while the insulated portion has thermal insulation properties to prevent heat loss in other areas. This local differentiation of thermal quality resolves the contradiction.
2Ease of operation
If modular design is implemented for easy connection, then ease of installation is improved, but structural complexity increases
Solution Approach 1:
The lighting fixture is divided into multiple modular units that can be connected in series. Each unit has standardized connection interfaces with mounting structures that enable easy attachment and detachment, simplifying installation while maintaining structural integrity.
Solution Approach 2:
The modular units are designed with universal connection interfaces and standardized mounting structures that can be used across different units. This universality allows for easy installation and flexibility in configuration without requiring specialized connection methods for each unit.
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 solution effectively manages heat dissipation by exposing the heat sink to the ambient environment, improving thermal management and preventing improper insulation, thus enhancing the reliability and safety of high-power LED lighting systems.
Implementation Method 1
an elongated heat sink proximate to the light source, the heat sink exposing a heat dissipation surface to an ambient environment
Implementation Method 2
the heat sink exposing a heat dissipation surface to an ambient environment
Implementation Method 3
a reflector proximate to the heat sink, the reflector comprising a surface facing the heat sink and a back surface
Data Source
AI summary
A modular troffer-style fixture particularly well-suited for use with solid state light sources. The fixture comprises a reflector that includes parallel rails running along its length, providing a mount mechanism and structural support. An exposed heat sink is disposed proximate to the reflector. The portion of the heat sink facing the reflector functions as a mount surface for the light sources. The heat sink is hollow through the center in the longitudinal direction. The hollow portion defines a conduit through which electrical conductors can be run to power light emitters. One or more light sources disposed along the heat sink mount surface emit light toward the reflector where it can be mixed and/or shaped before it is emitted from the troffer as useful light. End caps are arranged at both ends of the reflector and heat sink, allowing for the easy connection of multiple units in a serial arrangement.