Polymer LED Fixture Frame with Removable Optical Unit

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Solution Overview

Problem

Existing outdoor LED lighting fixtures face challenges with corrosion resistance, mechanical durability, and environmental impact due to the use of aluminum frames, which also limit thermal management and increase maintenance costs, while plastic frames have limitations in durability and recyclability.

Innovation Solution

A lighting fixture with a self-supporting monocoque frame made of roto-molded polymeric material, featuring an integrated mechanical attachment and adaptation flange for a removable optical group, providing enhanced mechanical resistance and reduced environmental impact, along with a system to prevent electrostatic discharges and maintain equipotential conductive casing.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Temperature

If aluminum frames are used for outdoor LED lighting fixtures, then thermal dissipation performance is improved, but corrosion resistance and mechanical durability are worsened

Engineering Contradiction:

Improvethermal dissipation performanceVSAvoidcorrosion resistance and mechanical durability

Core Design Contradiction:

TemperatureVSReliability

Solution Approach 1:

The patent uses polymeric material as a composite alternative to traditional aluminum frames, achieving both corrosion resistance and adequate thermal management through the composite structure and design optimizations

Inventive Principle:

Principle #40Composite materials

2Reliability

If aluminum frames with anti-corrosion treatment are used, then corrosion resistance is improved, but environmental impact and maintenance costs increase

Engineering Contradiction:

Improvecorrosion resistanceVSAvoidenvironmental impact and maintenance costs

Core Design Contradiction:

ReliabilityVSObject-generated harmful factors

Solution Approach 1:

The patent employs polymeric frames that eliminate the need for anti-corrosion treatments and reduce maintenance requirements, though the frame may have a shorter service life compared to treated aluminum

Inventive Principle:

Principle #27Cheap short-living objects (Disposable)

Solution Approach 2:

The patent changes the material parameter from metal to polymer, fundamentally altering the corrosion behavior and maintenance characteristics of the lighting fixture frame

Inventive Principle:

Principle #35Parameter changes

3Reliability

If plastic frames are used, then corrosion resistance and weight are improved, but mechanical durability and recyclability are worsened

Engineering Contradiction:

Improvecorrosion resistanceVSAvoidmechanical durability

Core Design Contradiction:

ReliabilityVSStrength

Solution Approach 1:

The patent uses specifically engineered polymeric materials with enhanced mechanical properties, potentially incorporating reinforcement or composite structures to improve durability while maintaining the corrosion-resistant polymer base

Inventive Principle:

Principle #40Composite materials

4Temperature

If the optical unit is integrated with the frame, then thermal dissipation is improved, but adaptability and ease of maintenance are worsened

Engineering Contradiction:

Improvethermal dissipationVSAvoidadaptability and ease of maintenance

Core Design Contradiction:

TemperatureVSAdaptability or versatility

Solution Approach 1:

The patent divides the lighting fixture into separable modules - the frame and the optical unit - allowing the optical unit to be independently removed and replaced while maintaining thermal management capabilities through the frame structure

Inventive Principle:

Principle #1Segmentation

Data Source

PatentEP4431797A1LED lighting fixture with frame made of polymer material and removable light source, with high mechanical resistance and low environmental impact

Publication Date: 2024.09.18 NITEKO SRL

Figure 1a~1d
Figure 2a~2f
Figure 2g~2m

AI summary

The object of the invention is a LED lighting fixture comprising an optical unit (2), a cover (1) in which a coupling flange (38) is integrated, in which said optical unit (2) is removably fixed to the said coupling flange (38) and said cover (1) are made of polymeric material.