Home appliance having light emitting module
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Solution Overview
Problem
Current light emitting modules in home appliances, such as washing machines and refrigerators, suffer from poor light purity, uneven light distribution, and high costs due to the use of complex structures and expensive transparent or translucent light guide members, leading to unsatisfactory visual effects.
Innovation Solution
A light emitting module with a simple structure comprising a base, a light source, and a light shield with a diffuse reflection area and a light transmission area, where the light shield externally shields the light source, allowing light to be reflected and transmitted through a transparent or translucent protection cover, eliminating direct irradiation and providing uniform soft light.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a point light source with light guide member or diffusion plate is used, then light can be diffused, but light intensity is sacrificed and light purity becomes poor
Solution Approach 1:
The patent extracts and eliminates the light guide member and diffusion plate from the traditional lighting structure. By removing these intermediate components, the light source directly illuminates the interior cavity, preserving light intensity and purity while significantly simplifying the overall structure.
Solution Approach 2:
The lighting system is segmented into distinct functional zones: a light-shielding area that blocks direct light from the source, and a light-transmitting area that allows diffused light to pass through. This segmentation enables precise control over light distribution without requiring complex diffusion materials.
2Illumination intensity
If a point light source with light guide member is used, then light can be distributed, but bright spots cannot be avoided and light distribution becomes uneven
Solution Approach 1:
The light shield is designed with spatially varying properties: a light-shielding area with high opacity to block direct light, and a light-transmitting area with controlled transparency to allow diffused light passage. This local differentiation of optical properties achieves uniform light distribution without complex assembly requirements.
3Illumination intensity
If transparent or translucent light guide member or diffusion plate is used, then light can be diffused, but the price becomes relatively high
Solution Approach 1:
The patent replaces expensive transparent or translucent light guide members and diffusion plates with a simple light shield structure made from cost-effective materials. The light shield achieves the same light diffusion effect through geometric design and selective opacity rather than requiring costly optical materials.
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 achieves high light purity, low intensity attenuation, and uniform brightness without bright spots, reducing assembly complexity and costs, while ensuring the light is soft and non-dazzling, with integrated components like LED strips and control panels for easy control of light characteristics.
Implementation Method 1
the base has a diffuse reflection area that receives illumination from the light source, an outer part opposite to the diffuse reflection area has a light transmission area, and a light ray emitted by the light source passes through the light transmission area after being reflected by the diffuse reflection area
Implementation Method 2
the light shield comprises a light-shielding area, wherein the light-shielding area externally shields the entire light source to prevent the light ray emitted by the light source from directly emitting outside the light shield
Data Source
Figure 1
Figure 2A~2B
Figure 3A~3B
AI summary
A home appliance having a light emitting module (10), comprising a housing assembly (100), wherein the light emitting module (10) is located on the housing assembly (100), the light emitting module (10) includes a base (2), a light source (4) and a light shield (6), the light source (4) is located between the base (2) and the light shield (6), the base (2) has a diffuse reflection area (26) that receives illumination from the light source (4), an outer part opposite to the diffuse reflection area (26) has a light transmission area (8), and a light ray emitted by the light source (4) passes through the light transmission area (8) after being reflected by the diffuse reflection area (26). By using principles of diffuse reflection and shielding, light emitted has high purity, low light intensity attenuation, and a uniform and soft color in a light emitting area.