LED Lamp Contact Breaking Means for Safe Removal
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Solution Overview
Problem
Existing LED lamps pose a risk of electric shock during installation and removal due to the presence of a current path, unlike traditional fluorescent lamps, which are de-energized and have high impedance, making them safer to handle.
Innovation Solution
The LED lamp design features a first and second lamp cap with contact breaking means that disconnect the electrical connection when the lamp is removed from the fixture, ensuring no current path is present, thus reducing the risk of electric shock. This is achieved through a switching member that moves from a connected to a disconnected state, with a locking device and spring element ensuring safe operation and easy activation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If LED lamps are used for retrofit applications, then energy efficiency and luminous flux are improved, but the risk of electric shock during installation and removal increases due to the presence of a current path
Solution Approach 1:
The contact breaking means is configured to automatically disconnect the electrical connection between lamp caps when the LED lamp is removed from the fixture, before the user can touch the contact elements. This preliminary action of breaking the circuit eliminates the hazardous voltage presence during handling, resolving the electric shock risk while maintaining LED energy efficiency benefits
Solution Approach 2:
The contact breaking means acts as an intermediary mechanism between the connected and disconnected states of the lamp. It includes a switching member with connected and disconnected positions, controlled by a control element (such as a spring or cam mechanism), that mediates the electrical connection status based on the lamp's installation state, ensuring safety during retrofit operations
2Object-affected harmful factors
If contact breaking means are added to ensure safety during removal, then the risk of electric shock is reduced, but the device complexity increases
Solution Approach 1:
The contact breaking means is integrated into the existing lamp cap structure, merging the safety function with the electrical connection components. The switching member is incorporated within the lamp cap housing, and the control element utilizes the mechanical movement already present during lamp installation and removal, combining multiple functions into a unified structure that minimizes additional complexity
Solution Approach 2:
The contact breaking means operates automatically based on the lamp's installation state without requiring user intervention. The spring-loaded or cam-controlled switching mechanism self-activates when the lamp is inserted or removed from the fixture, providing safety functionality through self-service operation that reduces the need for additional control systems or user actions
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 provides enhanced safety during the installation and removal of LED lamps by ensuring no hazardous voltage is present when handling the lamp caps, allowing for safe retrofitting without altering the existing fixture, thereby reducing the risk of electric shock and enhancing user safety.
Implementation Method 1
The contact breaking means further comprise a spring element, biasing said switching member towards said disconnected state
Data Source
AI summary
An LED lamp(1) is provided, having at least one LED unit (4) arranged in a housing(2),a first (5, 5', 5'', 5''') and a second (6) lamp cap being arranged spaced from each other on opposing ends of the housing(2),said lamp caps (5, 5', 5'', 5''', 6) each comprising at least one contact element for connecting said LED unit (4) with a lamp fixture. To enhance the safety of the LED lamp (1) during removal of the lamp (1) from the fixture, said first lamp cap (5, 5', 5'', 5''') comprises contact breaking means(40, 40', 40''), configured to electrically disconnect said contact elements of said first(5, 5', 5'', 5''')and second (6) lamp caps from each other when said LED lamp (1) is removed from said lamp fixture.