Vehicle Head Lamp Single Projection Unit ADB DBL Integration
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Solution Overview
Problem
Existing vehicle head lamps typically have a single projection unit, limiting the integration of adaptive driving beam (ADB) and dynamic bending light (DBL) units, which restricts design flexibility, increases manufacturing complexity, and costs due to multiple swivel actuators.
Innovation Solution
A vehicular head lamp design incorporating a single projection unit with a base, upper and lower light sources, reflectors, and a shield system that allows for both ADB and DBL functionality using a single swivel actuator, reducing component count and simplifying manufacturing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple projection units (ADB and DBL) are integrated into a single head lamp, then functional versatility is improved, but device complexity increases due to multiple swivel actuators and components
Solution Approach 1:
The patent merges the ADB projection unit and DBL projection unit into a single integrated head lamp assembly, sharing common components including the housing, base, light sources, reflectors, and shield structures. This consolidation reduces the number of separate actuators and simplifies the overall system architecture while maintaining both ADB and DBL functionalities
Solution Approach 2:
The single head lamp assembly is designed to perform multiple functions by incorporating both ADB (Adaptive Driving Beam) and DBL (Dynamic Bending Light) projection capabilities. The shared optical components and control systems enable the unit to adapt to different driving conditions and road geometries, providing universal functionality across multiple lighting modes
2Adaptability or versatility
If multiple projection units are integrated into a single head lamp, then design freedom is improved, but manufacturing complexity increases
Solution Approach 1:
By combining ADB and DBL projection units into a single manufacturable assembly with shared components (housing, base, reflectors, shields), the patent enables streamlined production processes. The integrated design allows for unified manufacturing and assembly operations, reducing the complexity of producing multiple separate units while maintaining design flexibility
3Device complexity
If multiple projection units are integrated into a single head lamp, then component count is reduced, but manufacturing precision requirements increase
Solution Approach 1:
The patent employs distinct shield structures (shield main body and shield protrusion) with specific geometric configurations tailored to control light distribution for different functions. The shield main body is positioned to block light from the first light source, while the shield protrusion controls light from the second light source, with each shield element optimized for its specific lighting function to achieve precise beam patterns
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
Enables efficient integration of ADB and DBL units within a single projection unit, enhancing design freedom, reducing manufacturing complexity, and lowering costs by utilizing a single swivel actuator and fewer components.
Implementation Method 1
an upper reflector extending from the upper surface of the base, the upper reflector being configured to reflect light emitted from the first light source in a forward direction
Implementation Method 2
a lower reflector extending from the lower surface of the base, the lower reflector being configured to reflect incident light emitted from the second light in the forward direction
Data Source
AI summary
A head lamp includes a plate-shaped base supported in a housing. A first light source is disposed on an upper surface of the base. A second light source is disposed on a lower surface of the base. An upper reflector extends from the upper surface of the base and is configured to reflect incident light emitted from the first light source in a forward direction. A lower reflector extends from the lower surface of the base and is configured to reflect light emitted from the second light source in the forward direction. A shield main body extends from an end of the base and is configured to: block a portion of light reflected from the upper reflector and the lower reflector, and form a beam pattern. A shield protrusion protrudes from the shield main body and is configured to block another portion of the light reflected by the lower reflector.