Bracket-Based LED Lighting Thermal and Optical Management

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Solution Overview

Problem

The integration of LEDs into light fixtures poses challenges such as thermal management and undesirable aesthetics, particularly due to their smaller footprint and point source characteristics, which existing designs struggle to address effectively.

Innovation Solution

The use of bracket-based LED light sources that are geometrically shaped and configured to position LEDs for optimal optical distribution and thermal management, including heat sink brackets with integral routing and lead apertures for efficient heat dissipation and flexible mounting options to adjust light distribution.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Use of energy by moving object

If LEDs are used as light sources in fixtures, then energy efficiency and longevity are improved, but thermal management becomes more challenging due to concentrated heat generation

Engineering Contradiction:

Improveenergy efficiencyVSAvoidthermal management

Core Design Contradiction:

Use of energy by moving objectVSTemperature

Solution Approach 1:

The patent divides the heat dissipation function into separate components: heat sink brackets with fins that segment the heat transfer path, allowing distributed thermal management across multiple surfaces and areas, effectively managing the concentrated heat from LED point sources

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent introduces heat sink brackets as intermediary components between the LED light sources and the fixture housing. These brackets act as thermal mediators, conducting heat away from the LEDs through integrated heat sinks with fin structures that increase surface area for efficient heat dissipation

Inventive Principle:

Principle #24Intermediary (Mediator)

2Area of stationary object

If LEDs are positioned closer together to reduce footprint, then device size is reduced, but light distribution uniformity deteriorates due to point source characteristics

Engineering Contradiction:

Improvelight source footprintVSAvoidlight distribution uniformity

Core Design Contradiction:

Area of stationary objectVSIllumination intensity

Solution Approach 1:

The patent transitions from planar light source arrangement to three-dimensional spatial distribution by mounting LEDs on vertically oriented heat sink brackets at different heights and angles, creating multi-dimensional light distribution that achieves uniform illumination despite reduced footprint

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

Solution Approach 2:

The patent employs asymmetric positioning of LED modules on brackets with varying angles and orientations, strategically placing light sources at non-uniform intervals and angles to optimize light distribution patterns and eliminate the uniform spacing limitations of traditional linear arrangements

Inventive Principle:

Principle #4Asymmetry

3Ease of manufacture

If fixed light source position is used with reflector optimization, then manufacturing simplicity is maintained, but adaptability to different lighting requirements is reduced

Engineering Contradiction:

Improvemanufacturing simplicityVSAvoidlight distribution adaptability

Core Design Contradiction:

Ease of manufactureVSAdaptability or versatility

Solution Approach 1:

The patent introduces adjustable and reconfigurable bracket systems that allow dynamic repositioning of LED modules, enabling the same fixture to adapt to different lighting requirements through simple bracket angle adjustments or module reconfiguration without complex control systems

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The patent designs universal heat sink brackets with standardized mounting interfaces and adjustable positioning features that can accommodate different LED module types and configurations, allowing a single bracket design to serve multiple lighting application requirements

Inventive Principle:

Principle #6Universality (Multi-functionality)

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 configuration allows for improved thermal management and adjustable light distribution, achieving performance comparable to traditional light sources like HID systems while maintaining a uniform and aesthetically pleasing appearance.

Implementation Method 1

the bracket-based LED light source includes a bracket that is shaped to thermally disburse heat radiating from the LED light source

Methodology Applied

Scientific EffectThermal conduction: Conduction (thermal)

Data Source

PatentUS8511852B1Systems, methods, and devices for providing bracket-based LED lighting solutions for light fixtures

Publication Date: 2013.08.20 SIGNIFY HOLDING BV

AI summary

Systems, methods, and devices of the invention are directed to a light fixture that includes a housing with a bottom wall, a front wall, a back wall, two side walls, and an aperture, a reflector connected to the housing, and one or more bracket-based LED light sources segments connected to at least one of the front wall, the back wall, or the two side walls of the housing. In some embodiments of the invention, the housing is a wall mount housing. In some embodiments of the invention the bracket-based LED light source includes a bracket shaped to position the LED light source to emit a particular optical distribution from the aperture of the housing, and/or the bracket is shaped to thermally disburse heat radiating from the LED light source. In other embodiments of the invention, a portion of a bracket of at least one bracket-based LED light source is flexible.