Closed LED Strip Illumination Device Uniform Brightness
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Solution Overview
Problem
The existing surface light emitting illumination devices face complexities in manufacturing due to the use of edge frames and standardized LED strips, leading to uneven light intensity and shading issues, particularly when the interval between the first and last LED chips differs from other intervals, affecting the quality of surface light emission.
Innovation Solution
A surface light emitting illumination device using a closed LED strip with a channel formed in the light guide panel, where the LED strip is inserted in a circular form, and a fixing band with elastic curved parts is used to secure the strip, ensuring uniform light distribution by positioning the rear surface of the flexible substrate above the first chip and employing light shielding layers to prevent light emission towards the substrate.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If an edge frame is used to fix the LED strip to the light guide panel, then the LED strip can be securely fixed, but the manufacturing process becomes complicated
Solution Approach 1:
The patent removes the edge frame component entirely from the structure. Instead of using a separate edge frame to fix the LED strip, the LED strip is directly mounted to the light guide panel surface, eliminating the need for edge frame manufacturing and assembly processes while maintaining secure fixation
Solution Approach 2:
The fixing function previously performed by the edge frame is merged directly into the light guide panel structure. The LED strip is fixed directly to the panel surface, combining the support and fixation functions into a single integrated structure, thereby simplifying the overall device
2Ease of manufacture
If a standardized LED strip with constant interval between LED chips is used, then the LED strip can be easily manufactured, but uneven light intensity and shading occur when mounted on light guide panels of various sizes
Solution Approach 1:
The patent changes the interval parameter of LED chips along the strip to be non-uniform. Specifically, the interval between LED chips is adjusted based on their position, with different intervals in different sections of the strip, allowing compensation for variations in light guide panel sizes and shapes to achieve uniform light emission
Solution Approach 2:
Different sections of the LED strip have different chip intervals tailored to local requirements. The patent applies local quality by making the interval between LED chips vary at different positions along the strip, optimizing light distribution for specific mounting scenarios rather than using a uniform interval throughout
3Adaptability or versatility
If the interval between the first and last LED chips is larger than other intervals, then the LED strip can accommodate various panel sizes, but light intensity decreases at the ends causing shading
Solution Approach 1:
The patent modifies the interval parameter of LED chips to create a non-uniform distribution pattern. By adjusting the intervals between adjacent LED chips along the strip, the design compensates for the reduced light intensity at endpoint intervals, maintaining overall uniformity while preserving adaptability to various panel sizes
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 configuration simplifies the manufacturing process and enhances the quality of surface light emission by eliminating shading and maintaining uniform brightness, even with varying LED chip intervals, thus improving the overall illumination quality.
Implementation Method 1
an LED strip on which a plurality of LED chips are mounted
Implementation Method 2
light emitted from the LED strip is introduced into the light guide panel, is reflected from the bottom
Implementation Method 3
is diffused through the pattern
Implementation Method 4
a fixing band inserted in the channel to fix the LED strip so that the LED strip is not separated from the channel
Data Source
AI summary
Provided is a surface light emitting illumination device including: a light guide panel on which a fine pattern is formed; a channel formed in a closed curve shape inside an edge of the light guide panel; an LED strip inserted in the channel, in which a plurality of LED chips are mounted on a flexible substrate at regular intervals; a fixing band inserted in the channel to fix the LED strip so that the LED strip is not separated from the channel; a channel communication part formed in the light guide panel to communicate with the channel.