Lamp Driver Module EMI Shielding via Integrated Housing
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Solution Overview
Problem
Existing LED lamps face challenges in controlling electromagnetic interference (EMI) from their driver modules, which can impact other electronic devices and are difficult to integrate into smaller fixtures due to bulkiness and increased design complexity.
Innovation Solution
The solution involves a lamp design where the driver module is coupled with a heat dissipation module within a lamp shell, utilizing a mounting module to establish a reliable electrical connection, either through solder paste or a leaf spring, to enhance EMI shielding without adding bulk or complexity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If EMI suppression units are added to control electromagnetic interference, then EMI shielding performance is improved, but device volume increases and becomes too bulky for smaller lamps
Solution Approach 1:
The patent combines the EMI shielding function with the existing driver module housing structure. The housing is designed to enclose the driver circuit board and integrate EMI shielding components directly into the housing structure, merging the shielding function with the structural housing rather than adding separate bulky suppression units.
Solution Approach 2:
The driver module housing serves multiple functions simultaneously: it provides structural support, thermal management, and EMI shielding. The housing is designed as a multi-functional component that integrates EMI shielding properties into the existing structural element, eliminating the need for additional dedicated shielding components.
2Object-affected harmful factors
If driver module is integrated with lamp shell to improve EMI shielding, then EMI radiation shielding is improved, but device complexity increases
Solution Approach 1:
The mounting structure is designed to combine multiple functions into a single integrated component. The housing structure integrates the mounting features, EMI shielding, and structural support functions, reducing the number of separate components and simplifying the overall assembly process.
Solution Approach 2:
The driver module is designed as a separate, self-contained unit with integrated EMI shielding and mounting features. This segmentation allows the driver module to be pre-assembled and tested independently, then easily installed into the lamp shell, reducing the complexity of the overall assembly process.
3Object-affected harmful factors
If PCB anti-interference design is used to control EMI, then EMI control is achieved, but design cost and board complexity increase
Solution Approach 1:
The EMI control function is extracted from the PCB design and relocated to the housing structure. Instead of implementing complex EMI control measures on the PCB, the patent uses the housing as an EMI shield, separating the EMI control function from the circuit board design and simplifying the PCB layout requirements.
Solution Approach 2:
The housing structure serves as an intermediary EMI shield between the driver circuit board and the external environment. This intermediary shielding approach protects the PCB from EMI without requiring complex PCB design modifications, as the housing provides the primary EMI control barrier.
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
This approach effectively improves EMI radiation shielding performance while maintaining a compact design, reducing installation costs and complexity, making it suitable for various lamp types, including LED, OLED, and HID lamps.
Implementation Method 1
the driver module and the heat dissipation module of the lamp shell are electrically connected
Data Source
AI summary
The present invention provides a lamp, comprising a lamp shell, which comprises a base configured to connect an external power supply and a heat dissipation module coupled to the base, wherein an interior chamber is defined within the lamp shell; a light source; and a driver module coupled to the light source, with at least part of the driver module located within the interior chamber, the driver module is configured to regulate current provided to the light source. The lamp shell comprises a mounting module configured to receive a mounting part of the driver module to fasten the driver module to the lamp shell, the driver module and the heat dissipation module of the lamp shell are electrically connected.