Speaker Light Guide Assembly That Preserves Acoustic Output

Resolve Bottlenecks,
Find Innovative Solutions
Generate Solutions

Solution Overview

Problem

Existing illumination systems for vehicles and consumer products often obstruct sound output and degrade acoustic performance, lacking integration with speaker assemblies while providing customizable and aesthetically pleasing illumination.

Innovation Solution

A light guide assembly for speaker assemblies featuring a translucent light guide with downward posts, removably connected light boxes containing programmable LEDs, and a low-profile design to minimize interference with sound waves, allowing coordinated illumination with speaker operation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Illumination intensity

If illumination components are added to speaker assemblies, then visual appeal and aesthetics are enhanced, but sound output may be obstructed and acoustic performance degraded

Engineering Contradiction:
ImproveilluminationVSAvoidsound obstruction
Core Design Contradiction:
Illumination intensityVSObject-affected harmful factors

Solution Approach 1:

The light guide assembly is segmented into separate functional zones: illumination-generating sections at the ends and a central acoustic passage in the middle. This segmentation allows light to be emitted from the ends while sound passes freely through the central portion, resolving the contradiction between illumination and sound output.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

Different portions of the light guide assembly have different functional properties: the end portions are designed for light emission with translucent or transparent material, while the central portion is designed for acoustic transmission with openings or translucent material. This local differentiation allows each zone to optimize its specific function without interfering with the other.

Inventive Principle:
Principle #3Local quality

2Adaptability or versatility

If a light guide assembly is integrated with speaker assembly, then coordinated illumination with speaker operation is achieved, but device complexity increases

Engineering Contradiction:
Improvecoordinated illumination controlVSAvoidassembly integration
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The light guide assembly serves multiple functions: it generates illumination, transmits sound, and can be controlled to coordinate with speaker operation. The same structural components (light guide body, end portions) serve both optical and acoustic functions, reducing overall system complexity despite the coordinated control capability.

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

Solution Approach 2:

The illumination system and speaker assembly are merged into a single integrated unit where the light guide assembly is positioned to overlay the speaker assembly. This merging allows coordinated control while sharing common mounting structures and control systems, managing the complexity through integration rather than separate systems.

Inventive Principle:
Principle #5Merging (Combining)

3Ease of operation

If light boxes are removably connected to light guide, then ease of installation and maintenance is improved, but connection reliability may be reduced

Engineering Contradiction:
Improveinstallation and maintenanceVSAvoidconnection stability
Core Design Contradiction:
Ease of operationVSReliability

Solution Approach 1:

The connection between light boxes and light guide transitions from static permanent attachment to dynamic removable connection. This allows the system to adapt between ease of installation/maintenance (when removed) and operational reliability (when connected), with the connection state changing based on operational needs rather than being fixed.

Inventive Principle:
Principle #15Dynamics

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

Preserves sound quality and provides customizable illumination without obstructing sound output, offering a modular and aesthetically pleasing solution for vehicles and consumer products.

Implementation Method 1

each light box having a light source disposed therein for illuminating the light guide

Methodology Applied
Scientific EffectLight Emitting Diode: Light Emitting Diode

Implementation Method 2

a light guide including an elongated body having end portions with a central portion therebetween

Methodology Applied
Scientific EffectOptical Fibre: Optical Fibre

Implementation Method 3

The light guide includes prisms on the body to control light emitted from the light guide

Methodology Applied
Scientific EffectRefraction: Refraction

Implementation Method 4

The light guide includes prisms on the body to control light emitted from the light guide

Methodology Applied
Scientific EffectReflection: Reflection

Implementation Method 5

The posts include mask elements including one of mirror plating or opaque end caps to prevent light leakage from the end portions of the light guide

Methodology Applied
Scientific EffectAbsorption (EM radiation): Absorption (EM radiation)

Data Source

PatentUS20250370178A1Light guide assembly for use with speaker assembly
Publication Date: 2025.12.04 HARMAN BECKER AUTOMOTIVE SYST GMBH
  • US20250370178A1 patent drawing
  • US20250370178A1 patent drawing
  • US20250370178A1 patent drawing

AI summary

A light guide assembly for use with a speaker assembly includes a light guide including an elongated body having end portions with a central portion therebetween, the body having a post depending downwardly from each end portion. The light guide assembly further includes light boxes removably connectable to the posts, each light box having a light source disposed therein for illuminating the light guide, wherein illumination of the light guide by the light source is controlled in coordination with an operation of the speaker assembly.