Speaker Flow Guiding Surface for Projector Heat Dissipation

Solution Overview

Problem

Special-shaped projectors often experience poor airflow and reduced heat dissipation due to the placement of speakers and other components near the optical engine, leading to increased manufacturing costs and size when additional airflow guiding structures are used.

Innovation Solution

The projection apparatus incorporates a speaker with a flow guiding surface inclined toward the air outlet, guiding airflow generated by the airflow generating unit to exit smoothly through the air outlet, thereby enhancing heat dissipation without the need for additional airflow guiding structures.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Volume of moving object

If speakers and components are placed near the optical engine in special-shaped projectors, then the projector can be compact and multifunctional, but airflow becomes poor and heat dissipation capability is reduced

Engineering Contradiction:

Improveprojector sizeVSAvoidheat dissipation capability

Core Design Contradiction:

Volume of moving objectVSReliability

Solution Approach 1:

The speaker is integrated with the airflow guiding function by designing its surface as inclined toward the air outlet. This merging of functions allows the speaker to both emit sound and guide airflow simultaneously, eliminating the need for separate airflow guiding structures while maintaining compact projector size and effective heat dissipation

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The speaker is designed to serve multiple purposes: it acts as both an audio output device and an airflow guiding structure. The inclined surface of the speaker directs airflow toward the air outlet, enabling a single component to fulfill both acoustic and thermal management functions

Inventive Principle:

Principle #6Universality (Multi-functionality)

2Reliability

If additional airflow guiding structures are added to improve airflow, then heat dissipation capability is enhanced, but manufacturing cost increases and overall size increases

Engineering Contradiction:

Improveheat dissipation capabilityVSAvoidairflow guiding structure

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The speaker is integrated with the airflow guiding function by designing its surface as inclined toward the air outlet. This merging of functions allows the speaker to both emit sound and guide airflow simultaneously, eliminating the need for separate airflow guiding structures while maintaining compact projector size and effective heat dissipation

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The speaker is designed to serve multiple purposes: it acts as both an audio output device and an airflow guiding structure. The inclined surface of the speaker directs airflow toward the air outlet, enabling a single component to fulfill both acoustic and thermal management functions

Inventive Principle:

Principle #6Universality (Multi-functionality)

3Volume of moving object

If the airflow generating unit is positioned near the speaker, then compact layout is achieved, but wind noise is generated and interferes with audio output

Engineering Contradiction:

Improveprojector layout compactnessVSAvoidwind noise

Core Design Contradiction:

Volume of moving objectVSObject-generated harmful factors

Solution Approach 1:

The airflow that would normally create harmful wind noise is redirected through the speaker's inclined surface toward the air outlet. This converts the potentially harmful airflow into a beneficial force that simultaneously cools the projection module and disperses wind noise away from the speaker, eliminating the trade-off between compact layout and noise control

Inventive Principle:

Principle #22Blessing in disguise (Convert harm into benefit)

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

This design improves airflow efficiency, reduces backflow, and enhances heat dissipation while minimizing manufacturing costs and maintaining a compact size, also dispersing wind noise effectively by directing airflow through the speaker.

Implementation Method 1

The airflow generating unit is disposed in the casing and configured to generate airflow

Methodology Applied

Scientific EffectAirflow generation: Fan

Implementation Method 2

the airflow generated by the airflow generating unit passes through the speaker first and then to the outside of the casing, so that wind noise of the airflow is dispersed by a diaphragm inside the speaker bouncing in multiple directions

Methodology Applied

Scientific EffectSound wave dispersion: Sound

Data Source

PatentUS12235570B2Projection apparatus having speaker

Publication Date: 2025.02.25 CORETRONIC CORPORATION

AI summary

The disclosure provides a projection apparatus, which includes a casing, a projection module, at least one airflow generating unit, and at least one speaker. The casing has at least one air outlet. The projection module is disposed in the casing and configured to project an image beam outside the casing. The airflow generating unit is disposed in the casing and configured to generate airflow. The speaker is disposed in the casing, and the airflow generating unit is located between the projection module and the speaker. The speaker has at least one flow guiding surface, and the flow guiding surface is inclined toward the air outlet to guide the airflow toward the air outlet. The projection apparatus has a favorable heat dissipation capability and may reduce the noise generated by the airflow generating unit.