Elastic Lamp Positioning Device for Backlight Shock Resistance
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Solution Overview
Problem
Conventional lamp-positioning devices in backlight modules face issues with shock vulnerability, size tolerance deviations, and inefficient heat dispersion, leading to potential damage and increased assembly time and costs due to manufacturing variations.
Innovation Solution
A lamp-positioning device with elastic upper and lower arms, featuring protrusions and a bulge portion, designed to securely hold lamps with reduced contact area and accommodate size variations, enhancing stability and heat management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the holding space is made smaller to securely hold the lamp, then the lamp is tightly grasped and less likely to move during vibration, but the lamp may easily crack or break due to excessive force and heat accumulation occurs
Solution Approach 1:
The patent employs elastic arms (30) with arch-shaped structures that can flexibly adapt to the lamp's position. The arms contain protrusions (31) that contact the lamp while the elastic material allows controlled deformation, providing secure holding without excessive rigid force that would cause cracking or heat accumulation.
Solution Approach 2:
The patent utilizes the elastic properties of the arm material and the geometric parameters of the arch shape to create a holding mechanism that dynamically adjusts its grip. The elastic deformation allows the holding space to maintain contact with the lamp while accommodating thermal expansion and vibration without transmitting excessive force.
2Ease of manufacture
If the holding space is made larger to accommodate manufacturing tolerance, then the lamp can be easily inserted, but excessive space occurs between the holding space and the lamp causing the lamp to move during high frequency vibration and create noises
Solution Approach 1:
The patent transforms the static holding space into a dynamic system where the elastic arms can deform in response to vibration and position variations. The arch-shaped arms with protrusions provide a flexible constraint that maintains lamp stability during vibration while allowing easy insertion during assembly, resolving the contradiction between assembly ease and operational stability.
3Ease of operation
If the lamp port is enlarged to facilitate lamp insertion, then the lamp can be easily placed, but the lamp-holding device cannot hold the lamp firmly and the lamp may escape through the lamp port due to vibration and shock
Solution Approach 1:
The elastic arms form a flexible constraint system where the arch structure and protrusions create a secure retention mechanism. The lamp port is designed to guide the lamp during insertion, while the elastic arms subsequently deform to grip the lamp firmly, preventing escape during vibration and shock while maintaining ease of insertion.
4Device complexity
If conventional rigid lamp-holding devices are used, then the structure is simple and manufacturing is easy, but the lamp is vulnerable to vibration and shock causing the lamp to crack or deviate
Solution Approach 1:
The patent replaces rigid holding structures with elastic arms that have arch-shaped geometries. These flexible arms can absorb vibration and shock through elastic deformation, protecting the lamp from damage while maintaining a relatively simple overall device structure. The protrusions on the arms provide targeted contact points for secure holding.
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 device effectively reduces shock impact, stabilizes lamps, and compensates for manufacturing tolerances, resulting in longer lamp life, reduced assembly time, and improved product quality by providing a secure and efficient light distribution system.
Implementation Method 1
At least one of the upper arm (300) and the lower arm (500) is elastic
Data Source
AI summary
The present invention provides a lamp positioning device and a backlight module using the lamp positioning device for holding lamps. The lamp positioning device includes an upper arm and a lower arm, wherein a holding space is formed between the upper arm and the lower arm for accommodating the lamp. Furthermore, at least one of the upper arm and the lower arm has elasticity and thus can provide the lamp with resistance against shock in order to avoid being cracked or shattered.