Refrigerated Display Lighting Layout for Uniform Shelf Illumination
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Solution Overview
Problem
Conventional refrigerated sales furniture experiences inefficient and costly illumination, leading to difficulties in identifying and reading products, especially in the lower and upper regions of the presentation space due to illumination gaps.
Innovation Solution
The use of two types of light units with different horizontal light distribution angles, where the first type projects light rays with a wider angle to illuminate the lower goods presentation space area and the second type with a narrower angle to illuminate the upper area, ensuring uniform illumination across the front edges without gaps.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If conventional light units with single light distribution angle are used, then device complexity is reduced, but illumination uniformity deteriorates causing gaps in lower and upper regions
Solution Approach 1:
The illumination system is segmented into two distinct types of light units: first type light units with wider horizontal light distribution angle for lower goods presentation space area, and second type light units with narrower horizontal light distribution angle for upper goods presentation space area. This segmentation allows each light unit type to be optimized for its specific zone, eliminating illumination gaps while maintaining manageable device complexity through standardized unit designs.
2Illumination intensity
If light units are arranged to illuminate all regions, then illumination coverage is improved, but energy consumption increases
Solution Approach 1:
Different light distribution characteristics are applied to different spatial zones: first type light units with wider horizontal light distribution angle are used in the lower goods presentation space area where broader coverage is needed, while second type light units with narrower horizontal light distribution angle are used in the upper goods presentation space area. This local quality approach ensures adequate illumination coverage throughout the refrigerated goods presentation space while optimizing energy consumption by matching light distribution to actual spatial requirements.
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 provides uniform and energy-efficient illumination, ensuring that all products are well-illuminated and readable, reducing energy costs and eliminating illumination gaps, particularly in the critical middle regions.
Implementation Method 1
at least one light unit of a first type arranged at each vertical beam of the front frame in front of the lower goods presentation space area and at least one light unit of a second type arranged at each vertical beam of the front frame in front of the upper goods presentation space area, wherein the light units of the first type are configured to project light rays with a wider horizontal light distribution angle range than the light units of the second type
Data Source
Figure 1(a)~1(c)
Figure 2
Figure 3
AI summary
A refrigerated sales furniture (2) comprises a refrigerated goods presentation space; at least one opening providing access to the refrigerated goods presentation space; a front frame comprising a lower beam, an upper beam, and a least a left outermost vertical beam (16) and a right outermost vertical beam; the goods presentation space comprising a lower goods presentation space area (8) extending from a rear portion of the refrigerated goods presentation space to a lower goods presentation space area front edge (40), and an upper goods presentation space area (12) extending from a rear portion of the refrigerated goods presentation space to an upper goods presentation space area front edge (14), the lower goods presentation space area front edge (10) being closer to the front frame than the upper goods presentation space area front edge (14); and at least one light unit of a first type (6) arranged at each vertical beam (16, 18) of the front frame in front of the lower goods presentation space area (8) and at least one light unit of a second type (1) arranged at each vertical beam (16, 18) of the front frame in front of the upper goods presentation space area (12), wherein the light units of the first type (11) are configured to project light rays with a wider horizontal light distribution angle range than the light units of the second type; wherein the light units of the first type (6) are arranged at the vertical beams (16, 18) such that the horizontally outermost light rays projected by respective horizontally adjacent light units (6) intersect in a plane corresponding to the lower goods presentation space area front edge (10) or in front of such plane, so as to illuminate the whole width of the lower goods presentation space area front edge (10); and wherein the light units of the second type (11) are arranged at the vertical beams (16, 18) such that the horizontally outermost light rays projected by respective adjacent light units (11) intersect in a plane corresponding to the upper goods presentation space area front edge (14) or in front of such plane, so as to illuminate the whole width of the upper goods presentation space area front edge (14).