Vehicular Lamp Reflector Unit with Inclined Border Lines
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Solution Overview
Problem
Existing vehicular lamp devices inadequately illuminate the short sides of a horizontal rectangular lamp body, as light sources are centered, leading to insufficient light emission from the left and right short sides.
Innovation Solution
A vehicular lamp device with a reflector unit featuring contiguously arranged long and short side reflectors, where one light source is positioned at the center, and border lines between reflectors are inclined, allowing irradiation light to efficiently reach both long and short side reflectors, expanding the light-emitting area with a minimal number of light sources.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If light sources are disposed toward the center of the lamp body, then the structure is simplified and fewer light sources are needed, but the outer portions of the lamp body in the vehicle width direction do not sufficiently emit light
Solution Approach 1:
The reflector unit is segmented into multiple reflector portions (first reflector portion for long sides, second reflector portion for short sides) that are contiguously arranged. Each reflector portion is specifically oriented to direct light toward its corresponding lamp body side, enabling comprehensive illumination with a single centrally-disposed light source.
Solution Approach 2:
The reflector portions are configured with asymmetric orientations - the first reflector portions face the long sides while the second reflector portions face the short sides. This asymmetric arrangement ensures that light from the central source is effectively distributed to all four sides of the rectangular lamp body, particularly addressing the previously under-illuminated short sides.
2Illumination intensity
If multiple light sources are disposed at different positions to illuminate all sides, then sufficient light emission from all portions is achieved, but the device structure becomes more complex and weight increases
Solution Approach 1:
Multiple reflector functions are merged into a single integrated reflector unit that contains both the first reflector portions (for long sides) and the second reflector portions (for short sides). This unified structure enables one light source to illuminate all four sides of the lamp body, eliminating the need for multiple separate light sources and reducing overall device weight.
Solution Approach 2:
The single light source positioned at the center serves multiple functions by illuminating all four sides of the lamp body through the contiguously arranged reflector portions. This multi-functional approach replaces what would traditionally require four separate light sources, one for each side, thereby reducing weight while maintaining comprehensive illumination.
3Illumination intensity
If multiple light sources are used to illuminate all sides of the lamp body, then sufficient light emission is achieved, but the device structure and number of components increase
Solution Approach 1:
The reflector unit is segmented into multiple reflector portions (first reflector portion for long sides, second reflector portion for short sides) that are contiguously arranged. Each reflector portion is specifically oriented to direct light toward its corresponding lamp body side, enabling comprehensive illumination with a single centrally-disposed light source.
Solution Approach 2:
Multiple reflector functions are merged into a single integrated reflector unit that contains both the first reflector portions (for long sides) and the second reflector portions (for short sides). This unified structure enables one light source to illuminate all four sides of the lamp body, eliminating the need for multiple separate light sources and reducing overall device weight.
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 ensures efficient light emission along both long and short sides of the lamp body, reducing the number of light sources required and enhancing the light-emitting area, while also simplifying the device structure and reducing weight.
Implementation Method 1
reflects irradiation light (C) of light sources (51) with a reflector unit (43) for outward irradiation
Data Source
AI summary
A vehicular lamp device includes a horizontal rectangular lamp body and reflects irradiation light of light sources with a reflector unit for outward irradiation via an outer lens. Four reflector portions of the reflector unit have long side reflectors and short side reflectors. The long side reflectors are contiguously arranged in the long side direction at the positions toward the long sides of the lamp device. The short side reflectors are contiguously arranged in the short side direction at the positions toward the short sides of the lamp device. Light sources are each positioned toward the center of each reflector portion in front view of the lamp device. Border lines between the long side reflectors and short side reflectors are formed along inclined lines inclined to extend from near the light sources relative to the long side direction.