Surface light source assembly and refrigerator having the same
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Solution Overview
Problem
Current surface light source assemblies in refrigerators suffer from non-uniform lighting due to the formation of through holes, leading to bright or dark spots and shadows, which compromise illumination efficiency, especially in super-wide models.
Innovation Solution
The surface light source assembly adjusts the diameter and density of light guide spots around the through hole, with specific adjustments in the first and second regions near the upper and lower edges of the hole to maintain uniform brightness, and includes a supplemental light source for luminosity compensation, along with anti-collision frames to prevent damage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a through hole is formed in the light guide plate to fix devices on the rear wall, then device mounting is enabled, but non-uniform light rays appear around the through hole creating bright and dark spots
Solution Approach 1:
The patent applies local quality by differentiating the light guide spot parameters in different regions around the through hole. Specifically, the first region (upper edge) has smaller diameter spots with lower density, while the second region (lower edge) has larger diameter spots with lower density, compared to the peripheral regions. This localized variation compensates for the light disruption caused by the through hole, maintaining overall lighting uniformity while enabling device mounting.
2Quantity of substance
If more articles are placed on the shelf, then storage capacity is increased, but the existing top lighting lamp creates shadows at the edge or lower part of the compartment
Solution Approach 1:
The patent transitions from a single point light source at the top to a distributed surface light source across the rear wall. By transforming the lighting from a vertical single-point illumination to a horizontal surface-level illumination, the light can reach edge and lower areas of the compartment that were previously in shadow, thereby improving lighting coverage as storage capacity increases.
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 ensures uniform lighting across the entire light guide plate, eliminating shadows and bright spots, and allows for the proper mounting of cantilever shelves, achieving integral lighting and structural integrity.
Implementation Method 1
a light guide plate which is vertically illuminated by the light source
Implementation Method 2
the entire light guide plate emits uniform and soft light
Data Source
AI summary
The present invention discloses a surface light source assembly and a refrigerator having the same. The surface light source assembly comprises: a light source and a light guide plate which is vertically illuminated by the light source, wherein the light source is provided along a first side of the light guide plate; a plurality of light guide spots is provided at a front surface of the light guide plate, a through hole is vertically formed in the middle of the light guide plate; a first region is provided at a position close to the upper edge of the through hole, the diameter and density of the light guide spots in the first region are less than the diameter and density of the light guide spots in the peripheral region of the first region.