Vehicle Interior Lamp Reflector for Uniform Light Distribution
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Solution Overview
Problem
Conventional indoor illumination lamps for vehicle interiors face increased costs and complexity when using multiple light emitting diodes or integral light guide plates to achieve even light distribution across the lens, necessitating a solution that enhances light emission without these components.
Innovation Solution
An indoor illumination lamp design featuring a housing with openings, a lens, a chamber surrounding the lens, a light emitting diode positioned at the chamber corner, and a reflector on the inner chamber face to evenly distribute light across the lens without increasing light source volume or using a light guide plate.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If multiple light emitting diodes are arranged to achieve even light distribution across the lens, then the light emission uniformity is improved, but the cost increases and the device complexity increases
Solution Approach 1:
A reflector is introduced as an intermediary component between the single light emitting diode and the lens. The reflector redirects light that would otherwise be lost, directing it toward the lens to achieve more uniform light distribution across the entire lens area without requiring multiple LEDs or complex light guide plates
2Illumination intensity
If a light guide plate is integrally arranged inside the lens to achieve even light distribution, then the light emission uniformity is improved, but the device complexity increases
Solution Approach 1:
The complex light guide plate component is extracted and removed from the system. Instead, a simpler reflector structure is used to achieve the same light distribution effect, maintaining manufacturing simplicity while achieving uniform light emission across the lens
3Illumination intensity
If the light emission volume of light emitting diodes is increased to achieve even light distribution across the lens, then the light emission uniformity is improved, but the cost increases
Solution Approach 1:
The optical parameters of the system are changed by introducing a reflector with specific geometric characteristics. This allows the existing light emitting diode to illuminate the entire lens area more effectively by redirecting light paths, achieving uniform illumination without increasing the light emission volume or incurring additional costs
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
This design allows for even light emission across the entire lens area, enhancing light distribution efficiency and preventing dust entry while maintaining a simple structure and cost-effectiveness.
Implementation Method 1
a reflector arranged on an inner face in the chamber
Data Source
AI summary
An indoor illumination lamp includes a housing to be attached to an interior ceiling of a vehicle and provided with an opening, an interior light lens arranged at the opening of the housing, a chamber provided in the housing and surrounding the opening where the interior light lens is arranged, a light emitting diode arranged at a corner of the chamber and capable of emitting light toward the interior light lens, and a reflector arranged on an inner face in the chamber.