Rotating Light Emitter Heat Sink Assembly for Beam Redirection

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Solution Overview

Problem

Traditional lighting systems face challenges in efficiently managing heat dissipation and adjusting light direction without altering the fixture's external appearance or mounting configuration, particularly in compact designs with high lumen output.

Innovation Solution

A light fixture design featuring rotationally adjustable light emitter assemblies with a fixed primary heat sink and synchronization mechanism, allowing for precise illumination beam adjustment and thermal management without changing the housing or mounting position.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If traditional lighting systems change the mounting angle or reposition the housing to achieve desired beam direction, then light direction control is improved, but device complexity and mounting system prominence increase

Engineering Contradiction:

Improvelight direction controlVSAvoidmounting system complexity

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent applies the dynamics principle by making the light emitter assembly rotatable within the housing, allowing the beam direction to be dynamically adjusted without changing the mounting angle. The light emitter assembly can rotate about a rotation axis, enabling flexible light direction control while keeping the housing stationary and simplifying the mounting system.

Inventive Principle:

Principle #15Dynamics

2Temperature

If conventional heat sinks are used to manage heat dissipation, then thermal management is improved, but device size and design flexibility are reduced

Engineering Contradiction:

Improveheat dissipation efficiencyVSAvoidfixture size

Core Design Contradiction:

TemperatureVSVolume of moving object

Solution Approach 1:

The patent applies dynamics by making the heat sink rotate together with the light emitter assembly. This allows the heat sink to be compact and integrated within the rotating assembly rather than requiring a large stationary heat sink structure. The rotating heat sink maintains thermal contact with the light emitter while enabling compact fixture design.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The patent applies the nesting principle by integrating the heat sink within the rotating light emitter assembly structure. The heat sink is positioned to be thermally coupled to the light emitter and rotates with it, effectively nesting the thermal management component within the existing assembly rather than adding external heat dissipation structures.

Inventive Principle:

Principle #7Nested doll (Nesting)

3Adaptability or versatility

If light emitter assemblies are made rotationally adjustable for beam direction control, then adaptability is improved, but thermal management complexity increases

Engineering Contradiction:

Improvebeam direction adjustmentVSAvoidthermal management complexity

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent applies dynamics by synchronizing the rotation of the light emitter assembly with the rotation of the heat sink. Both components rotate together about the same rotation axis, which simplifies thermal management by ensuring continuous thermal contact during rotation rather than requiring complex thermal management systems for moving parts.

Inventive Principle:

Principle #15Dynamics

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 efficient thermal management and adjustable light beam direction in a compact, aesthetically appealing design, suitable for various applications with improved flexibility and longevity.

Implementation Method 1

A fixed primary heat sink within the housing provides thermally conductive surfaces that maintain contact with the intermediate heat sinks throughout their range of rotation

Methodology Applied

Scientific EffectThermal conduction: Conduction (thermal)

Data Source

PatentUS12553590B1Synchronized light board and heat sink rotation for illumination beam redirection

Publication Date: 2026.02.17 RAB LIGHTING INC

AI summary

Illustrative embodiments of a light fixture are disclosed that feature a housing and an internal optical module. The optical module includes one or more light emitter assemblies that are rotationally adjustable and a fixed primary heat sink. Each light emitter assembly includes a light emitter member, an intermediate rotatable heat sink, and an optional optic. The primary heat sink within the housing provides thermally conductive surfaces that maintain contact with the intermediate heat sinks throughout their range of rotation with the light emitter members. A synchronization mechanism ensures coordinated rotation of the light emitter assemblies. The fixture may also include a lens that encloses the optical module within the housing and an actuator for adjusting the rotation of the light emitters from outside the housing. The design allows for efficient thermal management and adjustable light beam direction with no change in position of the external housing or the mounting structure.