Adjustable Lighting Device with Telescopic Optic and Heat Sink
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Solution Overview
Problem
Lighting devices with moveable LED components face challenges in heat dissipation, leading to reduced brightness due to inefficient heat transfer, and adjustable fixtures often block light or restrict beam direction.
Innovation Solution
An adjustable lighting device with a heat sink and optic assembly that allows for telescopic adjustment of the optic within the housing, enabling focus and direction changes while maintaining effective heat dissipation through a heat sink and base connector for easy installation and potential smart lighting features.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the LED component is mounted on a moveable structure to adjust light beam direction, then the lighting device becomes adjustable, but heat transfer efficiency deteriorates leading to reduced brightness
Solution Approach 1:
The lighting device is divided into separate functional modules: a stationary heat sink with LED mounted directly to it, and a separate moveable optic assembly that can pivot independently. This segmentation allows the heat dissipation function to remain fixed and efficient while the optic assembly provides adjustable beam direction without compromising thermal performance.
Solution Approach 2:
A pivot mechanism acts as an intermediary between the stationary heat sink/LED assembly and the moveable optic. This intermediary allows the optic to be positioned at various angles relative to the light source without requiring the LED itself to be moveable, thus maintaining direct thermal contact between LED and heat sink while achieving beam direction adjustment.
2Illumination intensity
If the LED is mounted directly to a fixed fixture housing for heat dissipation, then brightness is improved, but the ability to adjust light direction is lost
Solution Approach 1:
The device is segmented into a fixed mounting portion (heat sink with LED) and a moveable optic portion. The heat sink is fixed to the fixture housing for optimal heat dissipation, while the optic assembly is mounted on a pivot mechanism that allows independent angular adjustment, thereby achieving both fixed thermal performance and adjustable optical direction.
Solution Approach 2:
The optic assembly is designed with dynamic adjustability through a pivot mechanism, allowing the optic to be repositioned to various angles. This dynamic capability is isolated from the fixed thermal management system, enabling the LED to remain stationary and thermally efficient while the optic provides adaptable beam direction control.
3Adaptability or versatility
If a moveable fixture head is used to adjust light direction, then adaptability is improved, but light loss increases due to blocking by the bezel or housing
Solution Approach 1:
The optic assembly is extracted from the traditional enclosed fixture head design and positioned externally on the heat sink. This extraction allows the optic to be adjusted to various angles without being constrained or blocked by a housing bezel, eliminating light loss while maintaining adjustability. The optic can be positioned optimally for each angle without interference from structural elements.
Solution Approach 2:
The adjustment mechanism utilizes angular positioning in three-dimensional space rather than linear movement within a constrained housing. The optic can pivot to various angles and positions around the light source, accessing optical paths that would otherwise be blocked by a traditional fixture head bezel, thereby reducing light loss while maintaining full adjustability.
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 solution enhances light focus and direction adjustability while maintaining brightness by efficient heat transfer, allowing for easy conversion of standard lighting applications to adjustable ones with potential smart capabilities.
Implementation Method 1
the brightness of an LED light source is at least partially related to the speed in which heat can be transferred away from the LED component
Implementation Method 2
an optic assembly configured to pivot an optic about the light source
Implementation Method 3
The optic is configured to be telescopically adjusted within the optic assembly to adjust a focal point between the light source and the optic
Data Source
AI summary
A lighting device assembly includes: a heat sink; a light source attached to one end of the heat sink; an optic assembly to pivot an optic about the light source; and a housing member having a cavity in which at least a portion of the optic assembly is received. The optic is to be telescopically adjusted within the optic assembly to adjust a focal point between the light source and the optic.