Serpentine Ventilation Structure for Outdoor Electronic Device Waterproofing

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Solution Overview

Problem

Electronic devices installed outdoors face challenges in maintaining waterproofing while ensuring effective heat dissipation, as closed casings can hinder airflow and increase the risk of water intrusion.

Innovation Solution

The electronic device incorporates a ventilation structure with a serpentine-shaped ventilation channel and barriers that direct airflow for heat dissipation while preventing water entry, featuring a first opening for air discharge and a second opening for airflow intake, with barriers arranged to overlap and guide air flow effectively.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a closed casing is used to prevent water intrusion, then waterproof capability is improved, but heat dissipation performance deteriorates

Engineering Contradiction:

Improvewaterproof capabilityVSAvoidheat dissipation performance

Core Design Contradiction:

ReliabilityVSTemperature

Solution Approach 1:

The ventilation structure is segmented into multiple barriers (first barrier, second barrier, third barrier) arranged in sequence within the ventilation channel. These barriers divide the airflow path into multiple segments that wind through the channel, creating a serpentine flow pattern. This segmentation allows the structure to maintain waterproofing while enabling controlled airflow for heat dissipation.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The barriers are nested within the ventilation channel, with each barrier positioned at specific locations along the channel's extending direction. The first barrier, second barrier, and third barrier are arranged concentrically within the channel space, creating a compact multi-layered structure that maximizes water blocking while maintaining airflow pathways.

Inventive Principle:

Principle #7Nested doll (Nesting)

2Temperature

If a ventilation structure is added to improve heat dissipation, then heat dissipation performance is improved, but water intrusion risk increases

Engineering Contradiction:

Improveheat dissipation performanceVSAvoidwaterproof capability

Core Design Contradiction:

TemperatureVSReliability

Solution Approach 1:

The barriers serve as intermediary elements within the ventilation channel that mediate between the external environment and the internal airflow path. These barriers selectively allow airflow to pass through while blocking water, acting as a protective intermediary that enables heat dissipation without compromising waterproofing.

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

Different portions of the ventilation channel have different local qualities through the strategic placement of barriers at specific locations. The barriers are positioned at critical points where water intrusion is most likely, while maintaining open passages for airflow. This localized differentiation allows the structure to be waterproof where needed while remaining ventilated where required.

Inventive Principle:

Principle #3Local quality

3Reliability

If multiple barriers are added to prevent water intrusion, then waterproof capability is improved, but device complexity increases

Engineering Contradiction:

Improvewaterproof capabilityVSAvoidventilation structure complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The first barrier, second barrier, and third barrier are merged into a single integrated ventilation structure that functions as one cohesive unit. Rather than being separate components, these barriers are combined within the ventilation channel to work together as a unified water-blocking system, reducing overall structural complexity while maintaining effective waterproofing.

Inventive Principle:

Principle #5Merging (Combining)

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 enhances heat dissipation while minimizing water intrusion, thereby protecting the device from environmental damage and maintaining operational performance in outdoor conditions.

Implementation Method 1

a ventilation channel connected between the first opening and the second opening

Methodology Applied

Scientific EffectAirflow: Convection

Implementation Method 2

The first barrier, the second barrier, and the third barrier at least partially overlap in an extending direction of the ventilation channel

Methodology Applied

Scientific EffectWater blocking: Physical Containment

Data Source

PatentUS20230126904A1Electronic device

Publication Date: 2023.04.27 INNOLUX CORP

AI summary

An electronic device is provided. The electronic device includes a casing and a ventilation structure. The ventilation structure is located on the casing and has a first opening, a second opening, and a ventilation channel connected between the first opening and the second opening. The ventilation structure includes a first barrier, a second barrier, and a third barrier located in the ventilation channel. The second barrier is located between the first barrier and the third barrier, and the first barrier, the second barrier, and the third barrier at least partially overlap in an extending direction of the ventilation channel.