LED Lighting Structure for Glare Control and Dark-Zone Reduction
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Solution Overview
Problem
Existing LED lighting devices suffer from high light loss, high material costs, poor glare control, and formation of dark zones due to the design of light guide plates and grilles, which affect efficiency and cost-effectiveness.
Innovation Solution
An LED lighting device design featuring a seat with a bottom and side portion, a first optical member covering the bottom portion, a first light source on the bottom, and a second light source on the side, with integrated optical members and a reflector to control glare by reflecting light multiple times before emission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a light guide plate and diffusion plate are used to emit light, then light emission is achieved, but light loss is large and cost is high
Solution Approach 1:
The patent removes the light guide plate and diffusion plate from the traditional panel lamp structure, extracting the problematic components that caused high light loss and high cost. Instead, it uses a direct emission structure with LED light strips mounted on the bottom frame, eliminating the need for these intermediate optical components and thereby reducing light loss and manufacturing cost.
Solution Approach 2:
The patent replaces expensive light guide plates with a simpler, more cost-effective direct emission structure. By using LED light strips that emit light directly without requiring expensive optical components, the solution achieves cost reduction while maintaining acceptable light emission performance.
2Illumination intensity
If a grille is used to control light emission, then light directionality is achieved, but dark zones are formed and light loss increases
Solution Approach 1:
The patent removes the grille component from the lighting structure, extracting the element that creates dark zones and light loss. Instead of using a grille to control light direction, it employs LED light strips with inherent directional emission characteristics, eliminating the need for additional light-blocking components and thereby reducing light loss and preventing dark zone formation.
3Illumination intensity
If a light guide plate is used, then light transmission is achieved, but cost is high
Solution Approach 1:
The patent extracts and removes the expensive light guide plate from the structure, replacing it with a simpler direct emission system using LED light strips mounted directly on the bottom frame. This eliminates the need for costly optical components while maintaining light transmission functionality through the LED strips' inherent emission properties.
Solution Approach 2:
The patent substitutes expensive light guide plates with inexpensive LED light strips that provide equivalent or superior light transmission and emission performance. This component replacement significantly reduces manufacturing cost while maintaining or improving light transmission efficiency.
4Illumination intensity
If a grille lamp structure is used, then light emission is achieved, but height control is difficult and packaging cost increases
Solution Approach 1:
The patent removes the grille component and simplifies the overall structure to a bottom-frame mounted LED light strip configuration. This extraction of the grille and associated structural elements enables better height control and reduces packaging dimensions, thereby lowering packaging and transportation costs.
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 design achieves improved light emission efficiency, reduced glare, and cost-effectiveness by minimizing direct light emission and utilizing optical complementarity to avoid dark zones, while controlling packaging and transportation costs.
Implementation Method 1
a first light source, disposed between the bottom portion of the seat and the first optical member; and a second light source, disposed on the side portion of the seat
Implementation Method 2
the first optical member at least reflects light emitted by the second light source
Data Source
AI summary
An LED lighting device includes a seat (1), a first optical member (3), a first light source (21) and a second light source (22). The seat (1) includes a bottom portion (11) and a side portion (12). The first optical member (3) is disposed on the seat (1) and covers the bottom portion (11). The first light source (21) is disposed between the bottom portion (11) of the seat (1) and the first optical member (3). The second light source (22) is disposed on the side portion (12) of the seat (1).