Freezer Lighting Device with Stepped Light-Transmitting Member
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Solution Overview
Problem
Conventional freezers typically have a single light source installed at the top, which inadequately illuminates items on the middle and lower shelves, causing inconvenience, especially in larger capacity freezers.
Innovation Solution
A lighting device with a light-transmitting member having distinct portions for the upper, middle, and lower sections, utilizing LENS optical properties and stepped surfaces to achieve even illumination, including a heat dissipation system and rotatable mounting for adaptability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single light source is installed at the top of the freezer, then the structure is simple and installation is easy, but the illumination uniformity across different shelves is poor
Solution Approach 1:
The light-transmitting member is divided into multiple light-transmitting portions (first, second, third portions) corresponding to different vertical zones of the freezer. Each portion directs light to a specific shelf region, segmenting the illumination function to achieve uniform lighting across upper, middle, and lower shelves without adding multiple light sources.
Solution Approach 2:
The patent introduces a stepped surface structure with different heights on the light-transmitting member. This vertical dimension variation allows light to be directed at different angles to multiple shelves, transforming a single-point light source into a multi-directional illumination system that covers the entire freezer volume uniformly.
2Illumination intensity
If multiple light sources are installed to illuminate all shelves, then the illumination uniformity improves, but the device complexity and cost increase
Solution Approach 1:
The light-transmitting member acts as an intermediary between the single light source and the multiple shelves. It receives light from one source and redistributes it to different vertical zones through its stepped structure and multiple light-transmitting portions, achieving multi-zone illumination without requiring multiple light sources.
Solution Approach 2:
The patent changes the geometric parameters of the light-transmitting member by creating stepped surfaces with different heights and multiple light-transmitting portions. This parameter modification allows a single light source to effectively illuminate multiple shelves at different vertical positions, replacing the need for multiple light sources.
3Ease of manufacture
If the light-emitting surface is made flat, then the manufacturing is simple, but the light distribution to lower shelves is insufficient
Solution Approach 1:
The light-emitting surface is transformed from a flat plane to a stepped surface with varying heights. This three-dimensional structure enables light to be directed at different angles to reach lower shelves effectively, solving the insufficient light distribution problem while maintaining manufacturing feasibility through standard molding processes.
4Illumination intensity
If the third light-transmitting portion uses a stepped surface, then the illumination to lower shelves improves, but the manufacturing complexity increases
Solution Approach 1:
The stepped surface is segmented into discrete steps corresponding to different light-transmitting portions. This segmentation allows the complex three-dimensional shape to be manufactured using standard injection molding techniques with simple mold inserts, reducing actual manufacturing complexity while achieving the desired light distribution to lower shelves.
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 lighting device provides uniform and enhanced illumination across all shelves, allowing for independent installation and adjustable angles, ensuring optimal visibility without increasing the number of light sources, thus improving user convenience.
Implementation Method 1
the refraction of the light-transmitting member with LENS optical properties, visual effects of multiplier increase of light spots thus can be obtained inside of the freezer
Implementation Method 2
The light-transmitting member is made of a material with LENS optical properties according to the present disclosure
Implementation Method 3
Frosting treatment can eliminate the problem of yellow circles generated around the edges after refraction of the light-transmitting member with the LENS optical properties, thereby making the illumination color more uniform
Data Source
AI summary
A lighting device suitable for freezers includes a housing and a light source arranged in the housing. The lighting device further includes a light-transmitting member arranged within the light-emitting range of the light source. The light-transmitting member includes a first light-transmitting portion for irradiating the upper portion of the freezer, a second light-transmitting portion for irradiating the middle of the freezer, and a third light-transmitting portion for irradiating the lower portion of the freezer. The light-emitting surfaces of the first light-transmitting portion and the second light-transmitting portion are planes and the light-emitting surface of the third light-transmitting portion is in form of a stepped surface. The lighting device of the present disclosure makes items in the freezer irradiated more evenly, significantly convenient for the users.