Adaptive Automotive Lamp Driver for LED Specification Variations
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Solution Overview
Problem
Automotive lamp devices using LEDs with different specifications require changing the lamp driver module to supply appropriate voltages and currents, leading to instability in operation.
Innovation Solution
An automotive lamp device with a lamp housing and a driver circuit that includes a setting unit to adjust the voltage and current levels according to the specifications of the LED, allowing the same lamp driver module to operate LEDs with varying specifications without the need for replacement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If LEDs with different specifications are used in the lamp, then design flexibility and space efficiency are improved, but the lamp driver module must be changed to supply appropriate voltages and currents, reducing operational stability
Solution Approach 1:
The patent applies parameter changes by enabling the lamp driver module to adjust its output voltage and current parameters dynamically based on the specific LED specifications detected in the lamp. The controller modifies operating parameters (voltage, current levels) to match different LED types, allowing a single driver module to accommodate various LED specifications without requiring module changes, thus maintaining operational stability while supporting design flexibility
Solution Approach 2:
The patent implements dynamics by creating an adaptive lamp driver module with a controller that can dynamically adjust its output characteristics in response to different LED specifications. The system transitions from a static, fixed-parameter driver to a dynamic, adjustable driver that automatically adapts its voltage and current output based on real-time detection of LED properties, enabling universal compatibility while ensuring stable operation across different LED types
2Reliability
If a single lamp driver module is used for all LED specifications, then operational stability is improved, but the ability to supply appropriate voltages and currents to LEDs with different specifications deteriorates
Solution Approach 1:
The patent applies feedback by implementing a detection mechanism that monitors LED specifications and feeds this information back to the controller, which then adjusts the output voltage and current accordingly. This closed-loop feedback system enables the single lamp driver module to automatically adapt to different LED types, maintaining operational stability while achieving compatibility with various LED specifications through real-time parameter adjustment based on detected conditions
3Illumination intensity
If incandescent lamps are used as position lamps, then lighting function is provided, but space efficiency is reduced and replacement frequency increases due to limited life span
Solution Approach 1:
The patent applies this principle by replacing traditional incandescent position lamps with LEDs, which have significantly longer operational lifespans. Although LEDs require different electrical characteristics, the invention enables a single adaptable driver module to support various LED types, eliminating the need for frequent replacements while maintaining compact design. The solution trades the simplicity of incandescent bulbs for the longevity and space efficiency of LEDs, with the added benefit of reduced maintenance frequency
Data Source
AI summary
An automotive lamp device is provided. The automotive lamp device includes a lamp housing into which a first lamp or a second lamp is inserted and which includes a plurality of lines, and a lamp driver module which is connected to a first line among the plurality of lines, supplies a first level of voltage and/or current to the first lamp if the first lamp is inserted into the lamp housing, and supplies a second level of voltage and/or current to the second lamp if the second lamp is inserted into the lamp housing.