Linear LED Fixture with Rotated Multicolor Diodes

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Solution Overview

Problem

Conventional LED lighting fixtures with multicolor LEDs suffer from varying color perception due to diode spacing and require large clusters, which limit resolution and increase manufacturing complexity and cost, while also being aesthetically unappealing.

Innovation Solution

A linear LED lighting fixture with a central axis featuring multiple adjacent multicolor LEDs, each rotated 180° relative to the next, and spaced 5 mm to 25 mm apart, to enhance viewing angle and resolution, using a printed circuit board with a groove for mounting and potting material for securement.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If multicolor LED's are mounted in clusters of four with 180° rotation to improve viewing angle, then color perception consistency improves, but device complexity and manufacturing cost increase

Engineering Contradiction:
Improvecolor perception consistencyVSAvoidmanufacturing complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The invention divides the LED structure into two separate monochrome LED's (one red, one green) instead of using clusters of multicolor LED's. Each monochrome LED emits a single color, eliminating the need for complex rotational arrangements while achieving consistent color perception from all viewing angles.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The invention combines multiple monochrome LED's (red and green) into a single linear housing to create a multicolor lighting fixture. This merging approach achieves the color versatility of multicolor LED's without requiring the complex cluster arrangements and 180° rotations of conventional designs.

Inventive Principle:
Principle #5Merging (Combining)

2Reliability

If clusters of four multicolor LED's are used to improve viewing angle, then color consistency improves, but resolution is limited due to 100 mm spacing

Engineering Contradiction:
Improvecolor consistencyVSAvoidresolution
Core Design Contradiction:
ReliabilityVSMeasurement precision

Solution Approach 1:

The invention uses multiple discrete monochrome LED's spaced along a linear housing, with each LED positioned at specific intervals. This segmentation allows for finer spatial resolution compared to large clusters, while maintaining color consistency through the use of dedicated monochrome emitters at each position.

Inventive Principle:
Principle #1Segmentation

3Reliability

If large clusters of multicolor LED's are used to improve viewing angle, then color perception consistency improves, but aesthetic appeal deteriorates

Engineering Contradiction:
Improvecolor perception consistencyVSAvoidaesthetic appeal
Core Design Contradiction:
ReliabilityVSShape

Solution Approach 1:

The invention distributes multiple small monochrome LED's along a linear housing rather than using large dense clusters. This creates a more aesthetically pleasing linear appearance while maintaining color consistency through the strategic placement of red and green LED's at different positions along the line.

Inventive Principle:
Principle #1Segmentation

4Reliability

If clusters of four multicolor LED's are used to improve viewing angle, then color consistency improves, but manufacturing cost increases

Engineering Contradiction:
Improvecolor consistencyVSAvoidmanufacturing cost
Core Design Contradiction:
ReliabilityVSEase of manufacture

Solution Approach 1:

The invention uses standard monochrome LED components rather than specialized multicolor LED's, which are typically more expensive. By segmenting the color emission into separate monochrome LED's, the design leverages the economies of scale and lower cost of individual color LED's while achieving the same visual effect.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The invention combines inexpensive monochrome LED's into a multicolor lighting system, achieving color versatility through a more cost-effective approach than using multicolor LED's. The linear housing integrates multiple LED's and their mounting structures in a standardized configuration that reduces overall manufacturing complexity and cost.

Inventive Principle:
Principle #5Merging (Combining)

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 improves the viewing angle and resolution of LED lighting fixtures, simplifies manufacturing, and reduces costs while maintaining aesthetic appeal by utilizing a linear mounting member with closely spaced, rotationally oriented multicolor LEDs.

Implementation Method 1

a first LED diode configured to emit light having a first color mounted on the first end portion, an opposing second end portion, and a second LED diode configured to emit light having a second color mounted on the second end portion

Methodology Applied
Scientific EffectElectroluminescence: Electroluminescence

Data Source

PatentEP2856008B1Linear LED lighting fixture with improved viewing angle
Publication Date: 2017.12.13 REVOLUTION DISPLAY LLC
  • EP2856008B1 patent drawingFigure 1
  • EP2856008B1 patent drawingFigure 2
  • EP2856008B1 patent drawingFigure 3

AI summary

Disclosed is an LED lighting fixture that includes a linear lighting mounting member having a first longitudinal axis and a plurality of adjacent multicolor LEDs, such as RGB LEDs, operably connected to the linear mounting member along the first axis. Each multicolor LED has a first end portion, a first LED diode configured to emit light having a first color mounted on the first end portion, an opposing second end portion, and a second LED diode configured to emit light having a second color disposed at the second, the first LED diode spaced apart from the second LED diode along a second longitudinal axis, and the orientation of each multicolor LED rotated 180° in relation to the orientation of the adjacent multicolor LED.