Integrated Shield-Gasket Member for LED Light Direction
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Solution Overview
Problem
Existing LED lighting fixtures face challenges in directing light efficiently with minimal 'light spillage' to non-preferential areas, while being cost-effective and environmentally protected, as they often require complex shielding and gasket layers that are difficult to manufacture and maintain.
Innovation Solution
An integrated shield-gasket member with a shield portion and a planar gasket portion is positioned over the LED package and secondary lens, featuring a shield-member aperture aligned with the light path, facilitating directional light distribution and providing a weather-proof seal, with a reflective surface and drainage gaps for improved performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If separate shield and gasket layers are used in LED fixtures, then directional light control is achieved, but manufacturing complexity and cost increase
Solution Approach 1:
The patent combines the shield layer and gasket layer into a single integrated shield-gasket member. This member includes a shield portion for directional light control and a gasket portion for sealing, eliminating the need for separate components. The integration reduces manufacturing steps, lowers costs, and simplifies assembly while maintaining both directional lighting performance and environmental sealing.
2Illumination intensity
If multiple LEDs are used to light large areas, then high level light output is achieved, but protection against environmental factors becomes more difficult
Solution Approach 1:
The shield-gasket member serves multiple functions simultaneously: it provides directional light shielding through the shield portion, environmental sealing through the gasket portion, and structural support for the LED modules. This multi-functional design protects all LEDs within the fixture from environmental factors like moisture and dust while maintaining high light output for large area illumination.
3Illumination intensity
If complex shielding and gasket layers are used, then light distribution control is improved, but ease of manufacture decreases
Solution Approach 1:
By merging the shield and gasket into one integrated member with precise geometric features, the patent achieves complex light distribution control without requiring multiple separate components. The shield portion directs light to preferential areas while the gasket portion provides sealing, all in a single manufacturable piece that simplifies production and assembly processes.
4Illumination intensity
If separate shield and gasket components are used, then light distribution effectiveness is improved, but manufacturing cost increases
Solution Approach 1:
The integration of shield and gasket functions into a single member eliminates the need for separate procurement, inventory management, and assembly of multiple components. This reduces manufacturing costs while maintaining effective light distribution control through the carefully designed shield portion geometry and sealing capability of the gasket portion.
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 effectively redirects a high percentage of light towards a preferential side, minimizing trespass light on non-preferential areas, while being cost-effective and environmentally resistant, with improved manufacturing accuracy and light distribution efficiency.
Implementation Method 1
The shield-gasket member has a shield portion and a substantially planar gasket portion thereabout... effectively redirects a high percentage of light towards a preferential side, minimizing trespass light on non-preferential areas
Implementation Method 2
providing a weather-proof seal... providing a weather-proof seal
Implementation Method 3
a secondary lens member over the primary lens which establishes a light path therebetween
Implementation Method 4
The substantially annular shield portion includes at least one gap to facilitate drainage of water
Data Source
AI summary
An LED apparatus for illumination toward a preferential side in a downward and outward direction including a shield-gasket member in the form of a layer positioned over LED packages and secondary lens members. The shield-gasket member has a shield portion and a substantially planar gasket portion thereabout. In preferred embodiments the shield portion extends over a part of the lens portion of the secondary lens member. A cover preferably secures the shield-gasket member with respect to the secondary lens member, the primary lens and the LED package, the shield-gasket member is preferably sandwiched between the cover and the flange of the secondary lens member.