Display Backlight Board Bar Fixing Layout to Avoid Power Line Interference
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Solution Overview
Problem
Existing display apparatuses face challenges in efficiently fixing the light source board to the bottom chassis, affecting product durability, performance, manufacturing efficiency, and increasing costs, while also posing interference risks with power supply lines.
Innovation Solution
The display apparatus incorporates a structure with board bars and bar fixers that securely attach to the bottom chassis, ensuring the light sources are spaced to avoid interference with power supply lines, enhancing durability and manufacturing efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a conventional light source board fixing structure is used, then the light source board can be attached to the bottom chassis, but the fixing efficiency is low and manufacturing costs increase
Solution Approach 1:
The light source board is divided into multiple board bars that are spaced apart from each other, allowing independent fixing of each bar to the bottom chassis. This segmentation enables simplified attachment structures for each bar while maintaining overall board functionality, directly addressing the fixing efficiency and complexity contradiction.
Solution Approach 2:
Board fixers are introduced as intermediary components to couple the board bars to the bottom chassis. These fixers serve as mediators that simplify the attachment process, enabling efficient fixing without requiring complex direct coupling mechanisms between the board bars and chassis.
2Ease of manufacture
If the coupling portion is positioned centrally on the board bar, then fixing is simplified, but it interferes with the power supply line
Solution Approach 1:
The coupling portion is extracted from the central position of the board bar and relocated to an off-center position. This extraction removes the interfering element from the power supply line path while preserving the simplified fixing functionality, resolving the contradiction between fixing simplicity and power line interference.
Solution Approach 2:
The coupling portion is positioned asymmetrically on the board bar rather than at the center, creating an asymmetric layout that avoids the power supply line routing path. This asymmetric positioning maintains fixing simplicity while eliminating harmful interference with the power supply system.
3Area of stationary object
If light sources are mounted close together on the board bar, then space is utilized efficiently, but heat dissipation and reliability are compromised
Solution Approach 1:
Different spatial zones on the board bar are assigned different functions: light sources are mounted at specific locations optimized for both space utilization and heat dissipation, while the coupling portion occupies a separate zone. This local quality differentiation ensures reliable light source operation without compromising space efficiency.
Data Source
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AI summary
A display apparatus includes: a display panel; light sources configured to emit light; a plurality of board bars on which the light sources are mounted, the plurality of board bars being spaced apart from each other along a first direction and extending in a second direction; a bottom chassis; and a plurality of bar fixers configured to fix the plurality of board bars to the bottom chassis. Each of the plurality of board bars includes: a central extending portion extending in a center of each board bar in the second direction; and a coupling portion located on the central extending portion of each of the plurality of board bars and located on one side in the first direction with respect to one light source among the light sources mounted on each of the plurality of board bars. Each of the plurality of bar fixers are disposed on each coupling portion.