Light Guide Display Illumination for Uniform LED Lighting
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Solution Overview
Problem
Conventional lighting systems for product displays using LEDs create unsightly spots and halos, detracting from the aesthetic presentation of products.
Innovation Solution
A lighting system comprising a translucent guide that collects and diffuses light from LEDs, eliminating spots and halos by reflecting and diffusing light to create a homogeneous illuminated zone, using materials like polycarbonate, polymethyl methacrylate, or glass, with a reflective surface and adjustable protuberances or grooves to control light distribution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If multiple LEDs are used to illuminate products, then illumination intensity is improved, but spots and halos appear on the illuminated zone
Solution Approach 1:
The patent introduces a light guide as an intermediary component between the LED light source and the products. The light guide collects light from the LED and redistributes it along its length, transforming the concentrated light output into a distributed illumination pattern that eliminates spots and halos while maintaining intensity.
Solution Approach 2:
The patent transitions from point-source illumination (LED directly illuminating products) to line-source illumination (light guide extending along a line). This dimensional change from a point source to an extended linear source distributes the light over a larger area, eliminating the concentrated spots and halos while providing uniform illumination.
2Object-affected harmful factors
If a light guide is used to eliminate spots and halos, then aesthetic presentation is improved, but device complexity increases
Solution Approach 1:
The patent employs a light guide that can be implemented as a thin, flexible component with simple geometric features (protuberances or grooves). This approach adds minimal structural complexity while achieving the desired light distribution effect, as the light guide can be a simple extruded profile rather than a complex multi-component assembly.
3Area of stationary object
If multiple LEDs are used for illumination, then coverage area is improved, but energy consumption increases
Solution Approach 1:
The patent segments the light distribution function from the light generation function. A single LED generates light, and the light guide segments this light into multiple distributed output points along its length, achieving wide area coverage with minimal energy consumption by eliminating the need for multiple separate LED sources.
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 provides a visually appealing, homogeneous illuminated zone that enhances product presentation while reducing energy consumption and environmental impact by using a single LED, offering significant energy savings and improved aesthetics.
Implementation Method 1
an upper surface (56) suitable for downwardly reflecting at least part of the light located inside the guide and forming a reflected light
Implementation Method 2
a lower surface (58) suitable for allowing at least part of the reflected light to pass and forming a diffused light
Data Source
AI summary
A sales or test display, comprising, in the assembled state, a lower level (14) for receiving products, a lighting system (16), and an upper level on which the lighting system is fastened, the lighting system comprising:a base (24),a printed circuit board (22) including a light-emitting diode suitable for emitting a light (L1), anda guide (26) made from a translucent material extending along a line (L), and located opposite the light-emitting diode to conduct said light,the guide (26) comprising:an upper surface for downwardly reflecting at least part of the light (L1) and forming a reflected light, anda lower surface for allowing at least part of the reflected light to pass and forming a diffused light (L3), the guide being configured to form an illuminated zone (20) on the lower level.