Vehicle Lamp Unit with Segmented Light Source Arrays
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Solution Overview
Problem
Conventional vehicle head lamps provide fixed directional lighting, failing to adapt to varying ambient conditions such as fog, heavy rain, or sloping roads, leading to inadequate visibility and inefficient energy use.
Innovation Solution
A lamp unit with multiple light source arrays on substrates of different thermal conductivities, individually driven by an electronic control unit based on sensor data, allowing for dynamic beam patterns and luminosity adjustments to match driving conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional head lamps use fixed directional lighting, then the structure is simple and energy consumption is low, but visibility is insufficient in varying ambient conditions such as fog, heavy rain, or sloping roads
Solution Approach 1:
The head lamp is divided into multiple light source arrays (first light source array, second light source array, third light source array) that can be independently controlled. Each array can be selectively activated based on driving conditions, allowing the system to provide appropriate lighting for fog, heavy rain, sloping roads, or normal conditions without requiring a completely different lamp design for each scenario.
Solution Approach 2:
The lighting system transitions from fixed directional lighting to dynamic, adjustable lighting patterns. The electronic control unit adjusts which light source arrays are activated and at what intensity based on real-time driving conditions, enabling the lighting pattern to adapt dynamically to ambient conditions such as fog, heavy rain, or sloping roads.
2Adaptability or versatility
If conventional head lamps provide fixed lighting patterns, then the device complexity is low, but the lighting pattern cannot reflect changes according to ambient conditions
Solution Approach 1:
The lighting control system is segmented into multiple independently controllable light source arrays, each associated with specific driving conditions. The electronic control unit contains separate control logic for each array (first control logic, second control logic, third control logic), which simplifies the overall control architecture while enabling complex adaptive behavior through modular condition-based activation.
Solution Approach 2:
The system uses sensor data as feedback to determine ambient conditions and automatically adjusts the lighting pattern accordingly. The electronic control unit receives information about driving conditions and selects appropriate light source arrays to activate, creating a closed-loop system that adapts lighting based on real-time environmental feedback without requiring manual intervention.
3Illumination intensity
If conventional head lamps are configured for medium and long distance lighting, then long distance visibility is improved, but energy efficiency is reduced in urban environments with good ambient lighting
Solution Approach 1:
The lighting system dynamically adjusts its output based on ambient conditions. In urban environments with good ambient lighting, the system activates only the first light source array for short-distance lighting, reducing energy consumption. When long-distance visibility is required (e.g., on highways or in dark rural areas), the system activates additional arrays (second and third arrays) to provide extended illumination, optimizing the balance between visibility and energy efficiency.
Solution Approach 2:
The system changes the operational parameters of the lighting system by selectively activating different light source arrays based on ambient conditions. This allows the lighting intensity and coverage area to be adjusted according to environmental requirements, providing high-intensity long-distance lighting only when necessary while using lower-intensity short-distance lighting for routine urban driving conditions.
4Reliability
If conventional head lamps light only the front of the vehicle, then the structure is simple, but visibility is inadequate when the vehicle is tilted on sloping or curved roads
Solution Approach 1:
The lighting system uses multiple segmented light source arrays positioned at different locations and orientations. When the vehicle is tilted on sloping or curved roads, the electronic control unit selectively activates specific arrays (e.g., second light source array for medium distance, third light source array for long distance) that provide appropriate illumination angles and coverage areas to compensate for the vehicle's tilted position, maintaining visibility without requiring mechanical adjustment mechanisms.
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
Enhances visibility and safety by providing optimal lighting patterns for various driving scenarios, improving energy efficiency and reducing glare for both the driver and other road users.
Implementation Method 1
The LED is a device which converts an electrical signal into infrared ray or light by using compound semiconductor characteristics
Data Source
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AI summary
A lamp unit may be provided that includes: a first substrate (100); a second substrate (200) disposed on the first substrate (100); and a plurality of light sources (300) disposed on the second substrate (200). At least two light source arrays (310, 330) are provided, in each of which a plurality of the light sources (310-n, 330-n) are disposed in a row. At least a first light source array (310) and a second light source array (330) among the light source arrays are individually driven.