Vehicle Lamp Antenna Pattern Layout for Lighting and NFC Integration
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Solution Overview
Problem
Existing lighting devices do not effectively integrate antenna patterns for both lighting and communication functions, leading to potential performance deterioration and space constraints for separate communication antennas.
Innovation Solution
A lighting device with an integrated antenna pattern, where the antenna is sealed within a resin layer or reflective member, allowing for both lighting and communication functions while preventing performance deterioration and optimizing space usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a separate communication antenna is installed, then communication function is achieved, but device complexity and space requirements increase
Solution Approach 1:
The patent combines the communication antenna function with the existing lighting device structure. The antenna pattern is formed using the wiring layer of the substrate or additional conductive patterns integrated into the same plane as the lighting components, eliminating the need for a separate antenna installation.
Solution Approach 2:
The lighting device structure is designed to serve multiple functions: it provides lighting through LED modules and simultaneously functions as a communication antenna. The wiring layers and conductive structures that form part of the lighting circuitry are configured to also create effective antenna patterns for wireless communication.
2Adaptability or versatility
If antenna pattern is added to lighting device, then communication function is integrated, but manufacturing complexity increases
Solution Approach 1:
The antenna pattern is formed using the same wiring layer materials and manufacturing processes already employed for the lighting circuitry. Conductive traces and connection paths required for LED operation are configured to simultaneously create effective antenna patterns, utilizing existing manufacturing capabilities without adding separate antenna fabrication steps.
3Reliability
If antenna pattern is disposed between reflective member and substrate, then communication performance is improved, but light extraction efficiency may be affected
Solution Approach 1:
The antenna pattern is strategically positioned in specific regions between the reflective member and substrate where it does not interfere with the primary light extraction paths. The design ensures that antenna conductors are located in areas that minimize shadowing or blocking of light while maintaining effective antenna radiation patterns for communication.
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 enables efficient lighting and communication through a single device, improves reliability, and enhances space utilization by eliminating the need for separate communication antennas.
Implementation Method 1
a reflective member disposed between the resin layer and the substrate
Implementation Method 2
an antenna pattern disposed in a first region between the reflective member and the substrate
Data Source
AI summary
The lighting device disclosed at an embodiment includes a substrate; a plurality of light sources arranged on the substrate; a resin layer scaling the plurality of light sources; a reflective member disposed between the resin layer and the substrate; and an antenna pattern disposed in a first region between the reflective member and the substrate.