Replaceable Lamp Module with Dismantling Mechanism
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Solution Overview
Problem
Conventional lamp modules for large size LCDs require disassembly of the lamp tube unit by pulling the wire connected to the CCFL, leading to increased failure possibilities during Hi-pot tests and risks of lamp cable burnout.
Innovation Solution
A replaceable lamp module with a dismantling mechanism on the reflector allows for disassembly without pulling the wire, featuring a design with a first, second, and third side forming a sink for the lamp tube and incorporating flexible pads to secure the wire ends, enabling force application at the dismantling mechanism for detachment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the lamp tube unit is disassembled by pulling the wire connected to the CCFL, then the lamp tube unit can be detached from the LCD, but the wire connection may be damaged causing failure in Hi-pot test or lamp cable burnout
Solution Approach 1:
The patent extracts the detachment function from the wire connection by introducing a dedicated dismantling mechanism on the reflector. The dismantling mechanism includes a protrusion that can be pulled to detach the entire lamp module assembly from the LCD, while the wire remains connected to the CCFL. This separates the detachment operation from the wire connection, allowing easy disassembly without risking wire damage.
2Reliability
If a dismantling mechanism is added to the reflector, then the wire connection reliability is improved, but the device complexity increases
Solution Approach 1:
The patent merges the dismantling mechanism with the existing reflector structure. The protrusion for detachment is integrated onto the reflector body, and the rubber cushion is attached to the same component. This combination approach adds the necessary detachment function while minimizing structural complexity, as the reflector serves dual purposes: light reflection and providing the detachment interface.
Solution Approach 2:
The reflector is designed with multi-functionality: it reflects light from the CCFL, provides structural support for the lamp module, and incorporates the dismantling mechanism for detachment. The protrusion on the reflector serves both as a structural element and as the detachment interface, reducing the need for separate components.
3Reliability
If the lamp module is designed to be detachable without pulling the wire, then the risk of lamp cable burnout is reduced, but the manufacturing precision requirements increase
Solution Approach 1:
The patent uses a rubber cushion attached to the reflector as part of the dismantling mechanism. The rubber material provides flexibility and tolerance for positioning variations, allowing the protrusion to engage with the corresponding recess in the LCD bezel without requiring extremely tight manufacturing tolerances. The elastic properties of rubber accommodate minor dimensional variations.
Solution Approach 2:
The dismantling mechanism combines rigid and flexible materials: the reflector body (rigid) provides the protrusion structure, while the rubber cushion (flexible) provides the interface with the LCD bezel. This composite approach allows the rigid portion to maintain precise geometry while the flexible rubber absorbs positioning variations, reducing overall manufacturing precision requirements.
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 design reduces the risk of wire damage and lamp cable burnout, simplifying the replacement process and minimizing failure possibilities during disassembly.
Implementation Method 1
a reflector... reflecting light from the lamp tube
Data Source
AI summary
A lamp module for use in a liquid crystal display includes a lamp tube, a reflector, a dismantling mechanism disposed on the reflector. The reflector comprises a first side, a second side, and a third side forming a sink, for accommodating the lamp tube and reflecting light from the lamp tube. The dismantling mechanism disposed on the reflector and outside a bezel of the liquid crystal display when the lamp module is assembled to the liquid crystal display. The lamp module is capable of being disassembled from the bezel of the liquid crystal display by applying a force on the dismantling mechanism.