Door Mirror Turn Lamp Light Guide Design
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Solution Overview
Problem
Conventional door mirrors with turn lamps require a large number of light-emitting diodes and have complex shapes, leading to increased components, difficult assembly, and high costs, while also compromising design and visibility.
Innovation Solution
A turn lamp design featuring a base housing, light source unit, inner housing with a long solid light guide, and a diffused reflection generator that includes a non-smooth surface, reflection film, or inclined light source, and a curved light guide to enhance light distribution and visibility with a reduced number of light sources.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a large number of light-emitting diodes are used to illuminate the entire front area of the door mirror, then visibility and design properties are improved, but the number of components increases, assembly becomes difficult, and cost increases
Solution Approach 1:
A light guide is introduced as an intermediary component between the light source and the door mirror surface. The light guide receives light from a single LED positioned at its longitudinal end and distributes this light along its length, illuminating the entire front area of the door mirror without requiring multiple LEDs. This mediator approach resolves the contradiction by enabling full-area illumination while maintaining a simple single-component light source configuration.
Solution Approach 2:
The patent replaces a mechanical system consisting of multiple discrete light-emitting components with an optical system using a light guide. Instead of mechanically arranging multiple LEDs across the door mirror surface, the invention uses optical principles (light transmission and distribution through the light guide) to achieve the same illumination effect with a single light source, thereby reducing component count and assembly complexity.
2Illumination intensity
If multiple light sources are arranged across the door mirror, then light distribution is improved, but the shape and structure become complicated
Solution Approach 1:
The light guide serves as an intermediary that internalizes the light distribution function within a single component. Rather than distributing multiple light sources across the door mirror structure, the light guide concentrates the light distribution mechanism within its own longitudinal structure, allowing uniform illumination without complicating the overall door mirror shape.
Solution Approach 2:
The invention merges the light distribution function into the light guide component itself. The light guide combines light transmission, light distribution, and structural support functions into a single integrated element, eliminating the need for separate light source arrangements and reducing overall structural complexity.
3Illumination intensity
If a complex structure with multiple components is used to achieve full-area illumination, then visibility is improved, but manufacturing and assembly become difficult and costly
Solution Approach 1:
The light guide acts as a intermediary that simplifies manufacturing by consolidating multiple functions into one component. Instead of manufacturing and assembling multiple light sources and their supporting structures, the light guide can be manufactured as a single piece (e.g., through injection molding) and installed as one component, dramatically improving ease of manufacture and assembly.
Solution Approach 2:
The light guide performs multiple functions simultaneously: it transmits light from the source, distributes light along the door mirror surface, provides structural support, and defines the illumination pattern. This multi-functionality reduces the total number of components that need to be manufactured and assembled, thereby improving ease of manufacture.
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 simplifies the construction, reduces costs, and enhances both visibility and design properties by efficiently distributing light across the entire area with a smaller number of light sources, improving the overall performance and aesthetics of the turn lamp.
Implementation Method 1
an inner housing provided with a long and solid light guide
Implementation Method 2
a diffused reflection generator that is structured such that light from the light source leaks out long from the light guide
Data Source
AI summary
A turn lamp includes a base housing; a light source unit incorporated with a light source and housed in the base housing; an inner housing provided with a long and solid light guide; a lens cover that covers the base housing; and a diffused reflection generator that is structured such that light from the light source leaks out long from the light guide.