Polygonal Lampshade for Wide-Angle LED Lighting
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Solution Overview
Problem
Conventional linear LED lighting devices have limited angular illumination capabilities and high fabrication costs due to the need for specialized textured structures or diffusers, which restrict their application and efficiency.
Innovation Solution
A wide-angle linear LED lighting device is designed with a polygonal lampshade, a base, and at least two LED modules, where the included angle between the base and the installation part of the polygonal lampshade and the height of the raised part are optimized to widen the beam angle, increasing backside energy and spatial background brightness, and enhancing anti-glare functionality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If conventional linear LED lighting devices use textured structures or diffusers to achieve desired light patterns, then light distribution is improved, but fabrication cost increases
Solution Approach 1:
The patent merges the lampshade and diffuser into a single integrated lampshade structure with specific geometric shapes (prism, cone, or cylinder). This eliminates the need for separate diffuser components while maintaining light diffusion functionality, thereby reducing fabrication cost and simplifying manufacturing processes.
Solution Approach 2:
The lampshade is designed to serve multiple functions: it provides structural support, defines the device appearance, and simultaneously acts as a diffuser to distribute light. This multi-functionality eliminates the need for additional dedicated diffuser components, reducing overall device complexity and manufacturing cost.
2Illumination intensity
If conventional linear LED lighting devices use specialized textured structures to produce desired light patterns, then light pattern quality is improved, but device complexity increases
Solution Approach 1:
The patent combines the structural component (lampshade) and optical component (diffuser) into a single integrated element. The lampshade's geometric shape itself provides the light diffusion function, eliminating the need for separate textured structures or diffuser components, thereby reducing device complexity.
Solution Approach 2:
The patent achieves different light patterns by changing the geometric parameters of the lampshade (shape, angle, height) rather than adding complex textured structures. By adjusting parameters like the prism angle or cone angle, various light distribution patterns can be obtained, simplifying the overall device structure.
3Ease of manufacture
If conventional linear LED lighting devices have limited angular illumination capabilities, then manufacturing is simpler, but luminous efficiency is unsatisfied
Solution Approach 1:
The patent achieves wide-angle illumination by changing the geometric parameters of the lampshade, specifically using prism shapes with specific angles (e.g., 60 degrees) or conical shapes. These parameter adjustments enable light to be distributed over a wider angular range, improving luminous efficiency while maintaining manufacturing simplicity through standard geometric forms.
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 achieves improved light-outputting characteristics with increased beam angles and uniform light scattering, enhancing backside energy and spatial background brightness while reducing fabrication costs by eliminating the need for additional diffusers and complex structures.
Implementation Method 1
the light beams emitted by the at least two LED modules are scattered at a wide angle
Data Source
Figure 1A
Figure 1B~1B(d)
Figure 2A
AI summary
A wide-angle linear LED lighting device (3, 4) includes a polygonal lampshade (30, 40), a base (32, 42) and at least two LED modules (31, 41). The polygonal lampshade (30, 40) includes at least two lateral parts (30a, 30b, 40a, 40b) and an installation part (30d, 40c). The base (32, 42) is disposed within the polygonal lampshade (30, 40) and disposed on an inner surface (30d1) of the installation part (30d, 40c). There is an included angle (θ) between the base (32, 42) and the inner surface (30d1) of the installation part (30d, 40c). The at least two LED modules (31, 41) are disposed on the base (32, 42). The light beams emitted by the at least two LED modules (31, 41) are outputted from different lateral parts (30a, 30b, 40a, 40b) of the polygonal lampshade (30, 40). The light-outputting characteristics of the wide-angle linear LED lighting device (3, 4) are correlated with the included angle (θ) and the at least two LED modules (31,41).