Directional Speaker Guide Tube for Slim Display Thickness
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing display apparatuses face challenges in reducing thickness while maintaining surround sound effects, as they need to accommodate speakers and printed circuit boards, limiting design slimness.
Innovation Solution
A directional speaker design featuring a driver unit, a guide tube with decreasing cross-sectional areas and sound radiation holes, and a cap with a V-shaped groove to enhance sound directivity and reduce noise, allowing for efficient sound radiation and surround sound effects even when speakers are placed centrally.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If speakers are arranged at rear portions of the display unit to provide surround sound effects, then surround sound quality is improved, but the display unit thickness increases to accommodate the speakers
Solution Approach 1:
The speaker system is segmented into multiple independent directional speakers distributed at different positions (front, rear, side portions) of the display unit. Each directional speaker operates as a separate sound radiation unit with its own guide tube, allowing surround sound effects to be achieved through spatial distribution rather than requiring thick rear housing for conventional speakers
Solution Approach 2:
The invention transitions from conventional omnidirectional sound radiation to directional sound radiation by introducing guide tubes that control sound propagation in specific directions. This dimensional control of sound waves allows speakers to be placed at various positions including thin edge portions while maintaining effective surround sound coverage
2Shape
If the display unit thickness is reduced for slim design, then aesthetic appearance is improved, but the ability to accommodate speakers and PCBs is reduced
Solution Approach 1:
The guide tube structure extends sound radiation in a directional manner along the length of the tube, allowing speakers to be positioned at various locations including the thin edge portions of the display unit. This directional propagation enables effective sound output without requiring increased thickness at speaker locations
Solution Approach 2:
Different portions of the display unit are assigned different functions: front speakers for dialogue, rear speakers for surround effects, and edge portion directional speakers for additional spatial audio. This local optimization allows each region to contribute to overall sound quality without requiring uniform thickness increase throughout the display unit
3Length of stationary object
If conventional speakers are used in thin display units, then display slimness is maintained, but surround sound effects are degraded
Solution Approach 1:
The audio system is divided into multiple independent directional speaker units positioned at different locations (front, rear, side portions) of the display unit. Each unit uses a guide tube to radiate sound in a specific direction, creating spatially distributed surround sound effects that compensate for the thin profile of the display unit
Solution Approach 2:
The guide tube structure enables sound to propagate directionally along the tube's length, allowing speakers to be effectively positioned at various locations including the thin edge portions of the display unit. This creates three-dimensional sound spatialization without requiring increased physical thickness
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 directional speaker effectively radiates sound with improved directivity, maintaining surround sound effects without increasing the overall thickness of the display unit, enabling slim and efficient display designs.
Implementation Method 1
a guide tube having a hollow tube shape with a first end and a second end that is open, the guide tube configured to guide the sound generated by the driver and received via the first end
Implementation Method 2
the cap has a groove in a V-shape on an inner surface facing the second end of the guide tube to allow sounds that reach the groove to destructively interfere with each other
Data Source
Figure 1
Figure 2
Figure 3
AI summary
A directional speaker and a display apparatus having the same are provided. In particular, the display apparatus includes a pair of directional speakers as a surround sound speaker, wherein each directional speaker includes a driver to generate sound and a guide tube provided with sound radiated holes linearly aligned on one surface thereof.