Pivotable LED Light Cartridge with Worm Gear Adjustment
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Solution Overview
Problem
Existing LED lighting fixtures face challenges in precisely positioning and securing LEDs and PCBs, managing heat dissipation, and maintaining aesthetics, particularly in directing and controlling light emission effectively.
Innovation Solution
A pivotable LED lighting system with a housing and pivotable light cartridges featuring radially-extending ribs and a rotatable worm gear for precise light direction, integrated heat dissipation, and a secure mounting mechanism.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If LEDs and PCBs are precisely positioned and secured in the housing, then light direction control is improved, but device complexity increases
Solution Approach 1:
The patent implements a pivotable light cartridge assembly that allows dynamic adjustment of LED array orientation. The cartridge can rotate about a pivot axis, enabling the light direction to be changed without complex repositioning mechanisms. This dynamic structure simplifies the overall positioning system while maintaining precise light direction control.
2Temperature
If heat dissipation structures are added to the LED lighting system, then thermal management is improved, but aesthetics are compromised
Solution Approach 1:
The patent integrates the heat dissipation function directly into the light cartridge housing structure. The housing serves dual purposes: as a structural component that holds and positions the LED array, and as a heat sink with integrated fin structures for thermal management. This merging of functions eliminates the need for separate, potentially aesthetically compromising heat dissipation components.
3Use of energy by moving object
If conventional lighting fixtures are retrofitted with LEDs, then energy efficiency is improved, but manufacturing precision requirements increase
Solution Approach 1:
The patent divides the LED lighting system into modular components: a light cartridge containing the LED array and PCB, a housing, and a pivot mechanism. This segmentation allows each component to be manufactured and assembled independently with standard tolerances, reducing the overall manufacturing precision requirements compared to integrating all components into a single fixed structure.
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
The system allows for efficient light direction, effective heat dissipation, and improved aesthetics by enabling precise pivoting of LEDs and PCBs within the housing, enhancing the overall performance and longevity of LED lighting fixtures.
Implementation Method 1
A typical means of dissipating heat from an LED lighting system includes a heat sink adjacent to the source of heat having one or more Surfaces, and a means for dissipating heat
Implementation Method 2
The heat sink surface(s) and the surface of the fins provide a flow path surface over which a fluid, most likely air, will flow to facilitate heat dissipation
Implementation Method 3
A typical refractor is an optic or lens that is associated with one or a plurality of the LEDs, to bend the emitted light into a desired direction or directions
Implementation Method 4
A reflector can be positioned over a single LED, to shape the emitted light that reflects off of its surface into a desired direction or pattern
Data Source
AI summary
A lighting apparatus having a pivotable light cartridge for positioning and directing the light output of a plurality of light sources, the light cartridge including an elongated base oriented along the longitudinal axis, a pivot at the opposed first and second ends of the light cartridge along the longitudinal axis, a plurality of light sources, and an longitudinal wall extending from the lateral edge of the base, the wall including a plurality of spaced-apart, radially-extending ribs, each having a distal edge. A rotatable worm gear having a helical thread is positioned in mechanical engagement with a portion of the distal edges of the plurality of ribs, so that rotation of the worm gear with a hand tool effects pivoting of the light cartridge along the longitudinal axis.