Guitar Case Speaker Placement for Wiring Reduction
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Solution Overview
Problem
Existing guitar cases with integrated amplifier and speaker units face challenges in space constraints, design flexibility, and wiring length due to the speaker's placement between guitar body concave portions, limiting their applicability and performance capabilities.
Innovation Solution
A guitar case design with the speaker unit positioned in the panel portion facing the guitar neck, an adjustable operation unit, a connector unit with multiple input jacks, and a power supply unit, including batteries or solar cells, allowing for flexible positioning and power options, and a folding stand for stable erection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the speaker unit is disposed in the space between concave portions of the guitar body, then the guitar case can be compact, but sufficient space is not available and applicability to existing cases is limited
Solution Approach 1:
The patent transitions from placing the speaker unit in the horizontal plane between guitar body concavities to positioning it vertically on the rear surface of the neck portion. This dimensional shift exploits the unused vertical space on the back of the case, providing sufficient room for the speaker while maintaining compatibility with existing guitar case geometries.
Solution Approach 2:
The patent separates the speaker unit placement from the guitar body concave portions and relocates it to the neck portion area. This segmentation allows independent optimization of speaker space without being constrained by the guitar body's shape, enabling broader applicability to existing cases.
2Stability of the object's composition
If the speaker unit position is specified by guitar shape toward the bottom, then layout is constrained, but design freedom is reduced and wiring length increases
Solution Approach 1:
By moving the speaker unit from the bottom horizontal position to the vertical rear surface of the neck portion, the patent reduces the distance to the amplifier unit. This dimensional relocation optimizes both structural stability and minimizes wiring length, thereby reducing overall device complexity.
Solution Approach 2:
The patent concentrates the speaker unit and amplifier unit in close proximity on the rear surface of the neck portion. This local clustering improves structural stability while minimizing the distance between components, thereby reducing wiring length and complexity.
3Power
If separate loudspeaker apparatus is used with guitar, then amplification capability is sufficient, but equipment quantity increases and transportation becomes difficult
Solution Approach 1:
The patent integrates the amplifier unit and speaker unit directly into the guitar case structure, merging previously separate components (guitar case, amplifier, speaker) into a single unified system. This consolidation maintains full amplification capability while eliminating the need for separate loudspeaker apparatus, thereby reducing equipment quantity and simplifying transportation.
Solution Approach 2:
The guitar case is designed to serve multiple functions: protecting the guitar, housing the amplifier unit, and mounting the speaker unit. This multi-functionality eliminates the need for separate dedicated amplifier and speaker equipment, reducing overall device complexity while maintaining adequate power and amplification capabilities.
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
Enhances applicability to existing guitar cases, provides design freedom for amplifier and speaker placement, shortens wiring, enables optimal live performance with balanced sound output, and allows for self-powered operation without relying on external sound engineers.
Implementation Method 1
a solar cell
Data Source
Figure 1
Figure 2~3
Figure 4
AI summary
An objective of the present invention is to allow ease of application and improve overall utility, even with existing guitar cases, and to increase the degrees of freedom in layout designs. A guitar case comprises: a speaker unit (4), further comprising either one speaker or two or more speakers (4a, 4b), which is disposed in a panel part (2n) of a case main body (2) wherein the neck part (Gn) of a guitar (G) is housed, and which the rear face (Gnr) of the neck part (Gn) faces; an adjustment console unit (5) which is disposed in the case main body (2) located near the speaker unit (4), is connected to an amplifier unit (3), and allows at least operation from outside; a connector part (6) which is disposed in the case main body (2), is connected to an input part (3i) of the amplifier unit (3), and includes at least a microphone jack (6a) to which a microphone (Ma) can be connected; and a power supply unit (7) which supplies DC power to the amplifier unit (3).