Refrigerator Door Transmissive Panel for Low-Light Visibility

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Solution Overview

Problem

Refrigerators lack an aesthetically appealing design that utilizes light emission to enhance visibility in low-light conditions, making it difficult for users to recognize patterns and positions in dark environments.

Innovation Solution

Incorporating a transmissive part in the exterior member and a light-emitting unit that emits light through a decoration member, allowing the light to pass through and illuminate the exterior, thereby improving the refrigerator's aesthetic appearance and user recognition in low-light conditions.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Illumination intensity

If a refrigerator has a simple exterior design without light-emitting components, then the device complexity is low and manufacturing is easier, but the aesthetic appearance and user recognition in dark environments deteriorates

Engineering Contradiction:
Improvevisibility in dark environmentsVSAvoidstructure complexity
Core Design Contradiction:
Illumination intensityVSDevice complexity

Solution Approach 1:

The patent merges the decoration member and exterior member into a single integrated component. The decoration member is positioned at the rear of the exterior member, creating a combined structure that eliminates the need for separate lighting components while achieving the light transmission effect. This integration resolves the contradiction by reducing device complexity while maintaining illumination functionality.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The exterior member serves multiple functions: it provides structural coverage, enables light transmission through its transmissive part, and displays decorative patterns. By making the exterior member multi-functional, the patent eliminates the need for additional dedicated lighting components, thereby reducing device complexity while improving visibility and aesthetic appearance in dark environments.

Inventive Principle:
Principle #6Universality (Multi-functionality)

2Illumination intensity

If a refrigerator uses opaque exterior materials, then manufacturing is simpler and material costs are lower, but the ability to transmit light and display patterns deteriorates

Engineering Contradiction:
Improvelight transmission capabilityVSAvoidmanufacturing simplicity
Core Design Contradiction:
Illumination intensityVSEase of manufacture

Solution Approach 1:

The exterior member is designed with a transmissive part that has different optical properties from other portions. This local quality change allows light to pass through specific areas while maintaining structural integrity and aesthetic appearance. The transmissive part can be a transparent or translucent region within the exterior member, enabling pattern display and light transmission without requiring complete transparency of the entire component.

Inventive Principle:
Principle #3Local quality

3Ease of operation

If a refrigerator lacks light-emitting components, then energy consumption is lower and the device is simpler, but user recognition of position and handle in dark states deteriorates

Engineering Contradiction:
Improveuser recognition in dark stateVSAvoidenergy consumption
Core Design Contradiction:
Ease of operationVSUse of energy by moving object

Solution Approach 1:

The decoration member with its transmissive part serves the dual purpose of aesthetic decoration and functional illumination. When light sources inside the refrigerator illuminate the interior, the light passes through the transmissive part of the exterior member, automatically providing external illumination without requiring additional energy-consuming light-emitting components. The structure serves itself by using existing light sources for both internal illumination and external visibility.

Inventive Principle:
Principle #25Self-service

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 solution enhances the refrigerator's aesthetic appeal by providing a light source that illuminates patterns and improves user recognition of the refrigerator's position and handle in dark environments, serving as an indoor light source.

Implementation Method 1

a light-emitting unit for emitting light so that the decoration member can be easily recognized from the outside

Methodology Applied
Scientific EffectLight emission: Light Emitting Diode

Implementation Method 2

an exterior member which partially defines the appearance of the refrigerator and has a transmissive part through which light is passed

Methodology Applied
Scientific EffectLight transmission: Refraction

Data Source

PatentEP2245402B1Refrigerator and door thereof
Publication Date: 2018.09.12 LG ELECTRONICS INC
  • EP2245402B1 patent drawingFigure 1
  • EP2245402B1 patent drawingFigure 2~4
  • EP2245402B1 patent drawingFigure 5~7

AI summary

This present embodiment relates to a refrigerator. The refrigerator includes an exterior member which defines the appearance of the refrigerator and in which a transmissive part, through which light is passed, is formed; a decoration member provided at a rear side of the exterior member; and a light-emitting unit which emits light toward the decoration member.