Illuminated Push Switch Case for Uniform Light Distribution
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Solution Overview
Problem
Existing push switches suffer from uneven illumination and insufficient illuminability, which hinders their usability in dark environments.
Innovation Solution
A push switch design incorporating a light-transmitting case with a light incident surface and emergent surface, along with a light diffusion structure and reflection structure, functions as a light guide to improve illuminability, and an illuminated switch device with a light source emitting light towards the push switch enhances this illumination.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a conventional push switch design is used, then the structure is simple, but the illumination is uneven and insufficient
Solution Approach 1:
The case is divided into multiple functional surfaces: a light incident surface for receiving light and a light emergent surface for emitting light. This segmentation allows the case to function as a light guide, directing light from the light source to illuminate the key top uniformly and effectively resolving the uneven illumination issue without requiring complex additional components.
Solution Approach 2:
The case serves multiple functions: it provides structural support, protects internal components, and acts as a light guide to distribute illumination. By integrating the light guide function into the case itself, the invention avoids adding separate complex illumination structures, thus maintaining simplicity while achieving uniform illumination.
2Illumination intensity
If no light guide structure is used, then the device is simple, but the illuminability is insufficient
Solution Approach 1:
The light guide function is merged with the case structure itself. The case is designed with specific optical surfaces (light incident surface and light emergent surface) that enable it to guide and distribute light effectively. This integration eliminates the need for separate light guide components, achieving high illuminability while keeping the device structure simple.
Solution Approach 2:
The case serves itself by performing both structural and optical functions. Instead of requiring external light guide components, the case's own structure is optimized to guide light from the light source to the key top, making the system self-sufficient and reducing overall complexity.
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 design achieves uniform and enhanced illumination across the push switch, improving usability in dark conditions and ensuring even light distribution, thereby addressing the issues of uneven illumination and low illuminability.
Implementation Method 1
The case has a light-transmitting property. The case has a light incident surface and a light emergent surface. The light incident surface is a surface on which light is incident. The light emergent surface is a surface through which at least part of the light that has entered through the light incident surface emerges.
Data Source
AI summary
A push switch includes a case, a fixed contact member, a moving contact member, and a protective sheet. The case has a first surface with a recess and a second surface opposite from the first surface. The fixed contact member includes a fixed contact in the recess and a terminal on an outer surface of the case. The moving contact member is in the recess and includes a moving contact to contact with the fixed contact when the switch is subjected to a press operation. The protective sheet covers the recess. The case has a light-transmitting property and has a light incident surface and a light emergent surface. Light is incident on the light incident surface. At least part of the light that has entered through the light incident surface emerges through the light emergent surface.