LED Frame Reflector Protrusion for Uniform Light Distribution
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Solution Overview
Problem
Conventional light emitting diode (LED) devices face challenges in achieving optimal light distribution and glare reduction, with existing designs often resulting in uneven lighting and reduced effectiveness due to limitations in reflector geometry and light orientation.
Innovation Solution
The proposed light emitting device incorporates a frame with a reflector and a reflective protrusion that projects towards an opening, where the reflective protrusion's orientation and surface roughness adjust the light emission angle, enhancing optical uniformity and reducing glare, while allowing for easy exchange of LEDs without disassembling the device.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a conventional reflector design is used, then the device structure is simple, but the light distribution is uneven and glare is not reduced
Solution Approach 1:
The reflector is segmented into multiple functional zones: a first reflective surface for primary light reflection, a second reflective surface at an angle to redirect light, and a reflective protrusion with a reflective top surface. This segmentation allows each zone to control specific light directions, achieving uniform light distribution and glare reduction while maintaining manufacturing feasibility through modular design
Solution Approach 2:
Different portions of the reflector are designed with different geometric properties and orientations. The first reflective surface has a specific inclination angle, the second reflective surface is angled differently, and the reflective protrusion has a distinct orientation. This local differentiation optimizes light reflection paths in different regions, improving overall light distribution uniformity
2Productivity
If LEDs are arranged close together to increase luminous output, then the light source density increases, but the distance between LEDs becomes too small for easy replacement
Solution Approach 1:
The LED array is segmented into individually replaceable units mounted on the frame, with each LED or LED group accessible from the opening side. This modular segmentation allows high LED density for increased luminous output while maintaining ease of replacement by accessing individual segments through the opening without disassembling the entire device
Solution Approach 2:
The design utilizes the depth dimension by positioning LEDs at different distances from the opening and arranging them in multiple rows. This three-dimensional arrangement increases the effective luminous output while maintaining adequate access space for replacement operations through the opening
3Object-affected harmful factors
If the reflective protrusion is added to control light orientation, then glare is reduced, but the device structure becomes more complex
Solution Approach 1:
The reflector structure is segmented into the base reflector body and a separate reflective protrusion element. This protrusion can be independently manufactured and attached to the reflector, allowing glare control functionality to be added without redesigning the entire reflector structure, thus minimizing overall device complexity
Solution Approach 2:
The reflective protrusion acts as an intermediary element between the main reflector and the opening. It receives light from the LED and redirects it at specific angles to reduce glare, serving as a dedicated functional component that addresses glare reduction without requiring fundamental changes to the overall device architecture
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
This design improves lighting uniformity, reduces glare, and extends the device's operational life by minimizing the impact of failed LEDs, thereby enhancing user experience and reducing manufacturing costs.
Implementation Method 1
light emitted from at least one light emitting diode is reflected by the reflector through the opening
Data Source
AI summary
A light emitting device includes: a frame having an opening; at least one light emitting diode (LED) disposed on the frame; a reflector disposed on the frame; and a reflective protrusion projecting from the reflector, wherein light emitted from at least one light emitting diode is reflected by the reflector through the opening, wherein the vertical axis of the reflective protrusion is perpendicular to a plane formed by extending the upper surface of the frame, wherein the upper surface of the frame contacts the reflector, and wherein a distance between two LEDs with one LED placed therebetween is greater than a distance between one LED and the reflector. Because a light source is disposed on the frame of the light emitting device, it is possible to easily exchange the light source of the light emitting diode by removing and attaching the frame without disassembling the entire lighting device.