Recessed Downlight Fixture with Three-Degree Adjustment Mechanism
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Solution Overview
Problem
Conventional recessed downlight fixtures lack adjustable light source capabilities, making it difficult to optimize their placement in crowded ceiling spaces, especially when retrofitting from incandescent or fluorescent to LED fixtures, which require different illumination patterns and adjustments.
Innovation Solution
The development of a recessed downlight fixture with a foldable ring and levers that allow for three degrees of adjustment (rotation, tilt, and recess) to accommodate various ceiling configurations and illumination patterns, enabling universal adjustment without modifying existing ceiling or installation brackets, suitable for both retrofit and new construction applications.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If conventional recessed downlight fixtures are installed in crowded ceiling spaces, then the fixtures can be mounted using existing ceiling joists, but the light source cannot be adjusted relative to the fixture, making optimal placement difficult
Solution Approach 1:
The patent implements a dynamic adjustment mechanism that allows the light source to be repositioned relative to the fixture housing in three degrees of freedom (rotation, tilt, and recess). This dynamic capability enables the light source to be adjusted to optimal positions even when the fixture itself is constrained by crowded ceiling spaces or suboptimal installation locations.
Solution Approach 2:
The fixture is divided into separable components: the housing, the light source assembly, and the adjustment mechanism. This segmentation allows independent adjustment of the light source position without moving the entire fixture, resolving the contradiction between ease of operation and device complexity by localizing the adjustment functionality.
2Adaptability or versatility
If recessed downlight fixtures are installed in retrofit applications, then existing ceiling openings can be utilized, but the fixtures lack the capability to accommodate different illumination patterns required by LED lighting
Solution Approach 1:
The adjustment mechanism provides universal adaptability for different illumination patterns and lighting applications. The same fixture design with three-degree-of-freedom adjustment can accommodate various LED configurations and illumination requirements, making it versatile for both retrofit and new construction applications without requiring application-specific customization.
Solution Approach 2:
The dynamic adjustment mechanism allows the fixture to adapt to different illumination patterns after installation. The light source can be repositioned to create various beam angles and coverage patterns, providing the adaptability needed for LED retrofit applications while maintaining a standardized fixture design.
3Reliability
If the light source is fixed in conventional fixtures, then the fixture structure is simple, but optimal illumination cannot be achieved when the fixture is placed in suboptimal locations due to crowded ceiling spaces
Solution Approach 1:
The three-degree-of-freedom adjustment mechanism enables the light source to be dynamically repositioned to achieve optimal illumination quality regardless of the fixture's installation location. This dynamic capability ensures reliable illumination performance even when ceiling spaces are crowded and prevent ideal fixture placement.
Solution Approach 2:
The adjustment mechanism changes the spatial parameters of the light source position (x, y, z coordinates and orientation angles) to optimize illumination quality. By allowing continuous adjustment of these parameters, the system ensures reliable illumination performance across various installation scenarios without requiring a more complex overall fixture design.
Data Source
AI summary
A recessed downlight fixture and method for installation is provided. The recessed downlight fixture can be installed in a retrofit application, after a ceiling is installed, through a pre-existing opening in that ceiling. Alternatively, a recessed downlight fixture according to a second embodiment can be installed before a ceiling is present. In either embodiment, the light source coupled to, for example, a heat sink, can be universally moved in three degrees of movement, rotationally, along a tilt axis, or further within the ceiling to increase or decrease the recess. All such universal adjustments can take place through and below the ceiling opening during or after installation.