Vehicle Lamp PCB Integration for Stable Multi-Segment LED Control
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The communication error between the lamp driving module and the multi-segment LED array in vehicle lamps is increased due to the length of the cord connecting them, leading to failures in forming a desired light distribution pattern.
Innovation Solution
Integrating the light source mounting board and the control circuit board using a board-to-board connector, eliminating the need for a cord and reducing the communication line length, thereby enhancing communication reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a cord is used to electrically connect the lamp driving module and the multi-segment LED array, then the components can be separately positioned, but the communication line length increases causing higher error rates
Solution Approach 1:
The lamp driving module and multi-segment LED array are integrated into a single unified structure where the control circuit is positioned adjacent to the LED array. This eliminates the cord connection and reduces the communication line length to minimal traces on the circuit board, thereby maintaining component positioning flexibility while significantly improving communication reliability and reducing error rates.
2Temperature
If the control circuit is positioned away from the light source, then heat generation from the control circuit does not affect the light source, but the communication line becomes longer increasing error likelihood
Solution Approach 1:
The system is segmented into distinct functional zones within the integrated structure: the light source mounting area with thermal management features, and the control circuit area with heat dissipation pathways. This segmentation allows the control circuit to be positioned adjacent to the light source for minimal communication line length while maintaining thermal independence through physical and thermal design separations, thus achieving both short communication lines and temperature control.
3Ease of manufacture
If a cord connection is used between the lamp driving module and LED array, then assembly is simplified, but the cord is prone to movement and bending causing communication errors
Solution Approach 1:
The lamp driving module and multi-segment LED array are merged into an integrated assembly where the control circuit is mounted on the same substrate or housing as the LED array. This integration eliminates the cord connection entirely, replacing it with rigid or flexible PCB traces that are immune to movement and bending. The integrated design maintains assembly simplicity through modular construction while ensuring communication stability by eliminating the vulnerable cord interface.
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 integration of the boards via a board-to-board connector reduces noise, signal attenuation, and communication errors, ensuring a reliable formation of the desired light distribution pattern.
Implementation Method 1
an optical component that deflects light emitted from the light source
Data Source
AI summary
A vehicle lamp includes a light source mounting board mounted with a multi-segment LED array, a control circuit board mounted with a circuit for controlling light emission of the multi-segment LED array, and a projection lens that deflects light emitted from the multi-segment LED array. The light source mounting board and the control circuit board are disposed to be integrated together.