Prism-Based Lighting for Electric Parking Brake Switch Visibility
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Solution Overview
Problem
Conventional electric parking brake switch lighting systems fail to effectively illuminate the operation space at night due to the positioning of the light source, which results in reduced visibility during low lighting conditions.
Innovation Solution
A lighting system for electric parking brake switches that incorporates a prism within the switch to refract and scatter light from a light source, ensuring illumination of the operation space, along with protrusions on the prism surface to enhance light distribution and a barrier layer to minimize light loss, allowing the light to travel vertically and uniformly illuminate the operation space.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If conventional scattering methods using bending portions are used, then light can be scattered to the switch, but both installation space and operation space cannot be illuminated with one light source
Solution Approach 1:
Different surfaces of the prism are designed with different optical properties. The first surface has a specific refractive angle for redirecting light, while the second surface has scattering portions that distribute light uniformly across the operation space, creating localized functional zones on a single component
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 significantly improves the visibility of the operation space during night driving or low lighting, enhancing operational convenience and aesthetics while utilizing existing light sources, thus eliminating the need for additional lighting components.
Implementation Method 1
one surface of the prism is exposed to and faces the operation space to allow light, which enters from a bottom surface, to transmit through the prism, exits through an upper end surface of the prism, and vertically travels upward, and to allow the light to refract within the prism to travel toward the operation space
Implementation Method 2
The prism may have protrusions on one surface thereof which may be exposed toward the operation space. In this configuration, the light which is incident onto the protrusions may be configured to scatter and travel vertically toward the operation space
Data Source
AI summary
Disclosed is a lighting system for an electric parking brake switch. The lighting system includes a panel in which an installation space and an operation space are formed at an upper portion thereof. In addition the system includes a switch that is installed in the installation space and is shaft coupled to perform pivotal motion. Furthermore, a prism is installed within the switch wherein one surface is exposed toward the operation space. The prism is configured to allow light which enters from underside bottom surface to pass therethrough and travel vertically upward after exiting from an upper surface, and to refract within thereof and then travel toward the operation space. Additionally, a light source is disposed at a lower end portion of the panel and is configured to emit light to the prism.