Audio Device Slit Housing Integrating Sound and Light Emission

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Solution Overview

Problem

Existing residential fire alarms primarily rely on sound alerts, which may not be sufficient for quick evacuation, especially in cases where the alarm sound is not heard, such as in hearing-impaired individuals or during emergencies in complete darkness, potentially delaying evacuation.

Innovation Solution

An audio device that integrates both sound and illuminating light alerts, where a control unit determines the presence of a fire and triggers both a loudspeaker for alarm sounds and LEDs for illuminating the evacuation route, housed in a design that minimizes the visibility of sound and light emission holes, allowing for quicker evacuation without compromising aesthetics.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Loss of time

If additional alert capability (illuminating light) is provided besides sound alarm, then evacuation time is reduced, but cosmetic appearance is affected

Engineering Contradiction:
Improveevacuation timeVSAvoidcosmetic appearance
Core Design Contradiction:
Loss of timeVSShape

Solution Approach 1:

The patent combines the sound hole and window hole into a single integrated slit structure on the front wall. This merging of functional elements (sound emission and light emission) into one aesthetic unit allows the device to provide both auditory and visual alerts while maintaining a clean, unified appearance that does not compromise cosmetic aesthetics.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The patent transitions from traditional separate circular holes to a linear slit dimension, creating a modern, sleek appearance. By arranging the sound hole and window hole along the length of the slit rather than placing them as separate circular openings, the design achieves a more contemporary aesthetic while maintaining both functional requirements.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

2Adaptability or versatility

If traditional separate sound hole and window hole are provided, then sound and light can be emitted, but cosmetic appearance is compromised

Engineering Contradiction:
Improvealert capabilityVSAvoidcosmetic appearance
Core Design Contradiction:
Adaptability or versatilityVSShape

Solution Approach 1:

The patent merges the sound hole and window hole into a single slit structure, allowing both sound and light emission functions to coexist within one integrated opening. This combination maintains versatility in alert capabilities while presenting a unified, aesthetically pleasing appearance that avoids the visual clutter of multiple separate holes.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The slit structure serves multiple functions simultaneously: it acts as a sound outlet for the loudspeaker and as a light outlet for the illuminating LED. This multi-functionality allows a single structural element to fulfill multiple alert purposes, reducing the need for separate dedicated openings and thereby preserving cosmetic appearance.

Inventive Principle:
Principle #6Universality (Multi-functionality)

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 facilitates faster evacuation by providing both auditory and visual alerts, reducing the time to recognize the emergency and locate the exit, even in dark or noisy conditions, while maintaining a cosmetic appearance that is not significantly affected.

Implementation Method 1

a loudspeaker to emit an alarm sound and a voice warning message

Methodology Applied
Scientific EffectElectroacoustic conversion:

Implementation Method 2

an illuminating unit including at least one light-emitting diode (LED) to emit illuminating light that irradiates a surrounding region

Methodology Applied
Scientific EffectElectroluminescence: Electroluminescence

Data Source

PatentEP3779907B1Audio device
Publication Date: 2022.07.06 PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO LTD
  • EP3779907B1 patent drawingFigure 1
  • EP3779907B1 patent drawingFigure 2A~2B
  • EP3779907B1 patent drawingFigure 3

AI summary

An object of the present disclosure is to contribute to evacuating a person in a shorter time while reducing the chances of affecting the cosmetic appearance. An audio device (1) includes a control unit, a first emission unit (11), a second emission unit, and a housing (4). The control unit determines, in accordance with information provided about a particular event, whether the particular event is present. The first emission unit (11) emits a sound to alert a person to the presence of the particular event. The second emission unit emits illuminating light. The housing (4) includes: a base portion to be fixed onto a structural component (C1); and a front wall portion (4B) provided in front of the base portion. The front wall portion (4B) has a slit (9) provided through a front surface (40) thereof and recessed toward the base portion. The slit (9) has: a sound hole (H1) provided in a first region (91) of an inner surface (90) thereof to let the sound come out of the housing (4); and a window hole (H2) provided in a second region (92) of the inner surface (90) thereof to let the illuminating light come out of the housing (4).