Non-round Retrofit LED Fixture with Rotatable Luminaire

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Solution Overview

Problem

Conventional recessed LED lighting fixtures are typically round, making it difficult to mount non-round LED light fixtures in desired orientations during retrofit installations, as architectural installations are not designed to accommodate non-round fixtures.

Innovation Solution

A non-round LED light fixture with a rotatable luminaire and attachment assembly, including fasteners and a rotary connector, allows for orientation adjustment during installation by attaching to a recessed electrical connection enclosure, enabling secure mounting in various orientations.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If round light fixtures are used for retrofit installation, then installation compatibility with existing recessed enclosures is improved, but orientation flexibility is worsened

Engineering Contradiction:
Improveinstallation compatibilityVSAvoidorientation flexibility
Core Design Contradiction:
Adaptability or versatilityVSEase of operation

Solution Approach 1:

The patent applies the dynamics principle by making the luminaire rotatable relative to the mounting member through a rotary connector mechanism. This allows the fixture to be dynamically adjusted to different orientations after installation, transforming a static mounting system into a dynamic one that can adapt to various lighting direction requirements while maintaining compatibility with standard round recessed enclosures

Inventive Principle:
Principle #15Dynamics

2Ease of operation

If non-round LED light fixtures are used, then orientation flexibility is improved, but installation difficulty is worsened due to inability to mount in desired orientations

Engineering Contradiction:
Improveorientation flexibilityVSAvoidinstallation difficulty
Core Design Contradiction:
Ease of operationVSEase of manufacture

Solution Approach 1:

The patent applies segmentation by dividing the lighting fixture into separable components: a mounting member that attaches to the recessed enclosure and a luminaire that can rotate relative to it. This segmentation allows the mounting portion to remain simple and compatible with existing installations while the luminaire portion provides orientation flexibility through rotation, resolving the installation difficulty associated with non-round fixtures

Inventive Principle:
Principle #1Segmentation

3Adaptability or versatility

If a rotatable luminaire with rotary connector is added, then orientation adjustment capability is improved, but device complexity is worsened

Engineering Contradiction:
Improveorientation adjustment capabilityVSAvoiddevice complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent applies universality by designing the mounting member and rotary connector to perform multiple functions: mechanical attachment to the recessed enclosure, electrical connection to power the LED luminaire, and enabling rotation for orientation adjustment. By combining these functions into integrated components, the patent adds orientation capability without proportionally increasing overall device complexity

Inventive Principle:
Principle #6Universality (Multi-functionality)

Data Source

PatentUS9557022B2Non-round retrofit recessed LED lighting fixture
Publication Date: 2017.01.31 FEIT ELECTRIC CO INC
  • US9557022B2 patent drawing
  • US9557022B2 patent drawing
  • US9557022B2 patent drawing

AI summary

A light emitting diode (LED) light fixture for attachment to a recessed electrical connection enclosure includes a luminaire with a frame having a non-round form. The light fixture includes a luminaire rotatably joined to a mounting member at a rotary connector. The mounting member has least one fastener for attaching the mounting member to a mounting fixture of the recessed electrical connection enclosure. The luminaire may be rotated relative to the mounting member attached to the mounting fixture of the recessed electrical connection enclosure, to orient the non-round frame of the luminaire in a desired orientation. The mounting member may be a mounting bar, and may include first and second fasteners at opposite ends of the mounting bar. Various types of fasteners may be employed for attachment to the mounting fixture of the recessed electrical connection enclosure, such as torsion springs, tension clips, J-box bracket clips, and twist-and-lock fasteners.