Vehicle Illumination Device With Segmented Reflectors
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Solution Overview
Problem
Conventional vehicle illumination devices suffer from reduced optical efficiency due to light being irradiated through a narrow area, leading to decreased light intensity and effectiveness in illuminating the road ahead, especially in adverse weather conditions.
Innovation Solution
The illumination device incorporates a light source, a heat dissipation part, a reflector, a first and second additional reflector, and a shield, along with a lens, where the first additional reflector protrudes forward to reflect light towards the second additional reflector, enhancing light distribution and reducing losses by allowing light to directly reach the lens, thereby improving optical efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a conventional reflector is used to reflect light from the light source, then light is directed forward, but the light only reaches the lens through a narrow area resulting in reduced optical efficiency
Solution Approach 1:
The reflector is divided into multiple segments: a main reflector (first reflector) for general light reflection and additional reflectors (second and third reflectors) for specific light redirection. This segmentation allows each segment to optimize its function, with the additional reflectors capturing and redirecting light that would otherwise be lost, thereby improving optical efficiency without significantly complicating the overall structure
Solution Approach 2:
The additional reflectors are positioned at different spatial locations and angles relative to the light source and lens. The second reflector is positioned to receive light from the light source and redirect it to the lens, while the third reflector is positioned to receive light from the second reflector and further redirect it. This multi-dimensional arrangement allows light to reach the lens from multiple paths and angles, increasing the effective light collection area and improving optical efficiency
2Device complexity
If the light is irradiated through a narrow area to maintain structural simplicity, then the device is easier to manufacture, but the light intensity and illumination effectiveness are reduced
Solution Approach 1:
Different regions of the optical system are assigned different functions: the main reflector handles general light collection and direction, while the additional reflectors are specifically positioned and shaped to capture and redirect light to specific areas of the lens. This local optimization ensures that each part contributes maximally to the overall light intensity at the lens, improving illumination effectiveness without requiring a complete redesign of the entire system
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 configuration enhances light intensity and maintains it over a longer distance, improving night vision and optical efficiency by minimizing light loss and optimizing beam angles up to 80 degrees, resulting in better illumination during both low and high beam states.
Implementation Method 1
a reflector installed on the rear surface of the light source and configured to reflect light irradiated from the light source forward
Implementation Method 2
a first additional reflector protruding forward from an upper end of the reflector, and configured to reflect the light irradiated from the light source part
Implementation Method 3
a second additional reflector mounted on the heat dissipation part, and configured to reflect the light reflected by the first additional reflector
Data Source
AI summary
An illumination device for a vehicle may include: a light source part; a heat dissipation part mounted on the light source part, and configured to dissipate heat generated from the light source part; a reflector covering the top of the light source part, and configured to reflect the light irradiated from the light source part; a first additional reflector protruding forward from an upper end of the reflector, and configured to reflect the light irradiated from the light source part; a second additional reflector mounted on the heat dissipation part, and configured to reflect the light reflected by the first additional reflector; a shield part configured to pass or block the light reflected by the second additional reflector; and a lens part through which the light reflected by the reflector and the second additional reflector passes.