Video Recorder Housing with Integrated Cooling Channels

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Solution Overview

Problem

Video recorders in vehicular environments face challenges in protecting data from heat build-up and liquid intrusion while maintaining accessibility and reducing part count for ease of serviceability.

Innovation Solution

A video recorder design featuring a main chassis housing, top cover, and bezel configuration that forms channels for airflow and liquid diversion, integrating a fin arrangement for improved cooling, drip protection, and RF shielding, with a pivoting door for user interface access and lock mechanism for secure USB port operation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If the video recorder is mounted for ease of access to user interface features, then user accessibility is improved, but protection against heat build-up and liquid intrusion is compromised

Engineering Contradiction:

Improveuser accessibilityVSAvoidprotection against heat and liquid

Core Design Contradiction:

Ease of operationVSReliability

Solution Approach 1:

The housing is divided into separate sections: a main body containing electronics and storage, a removable top cover for user interface access, and integrated fin structures. This segmentation allows the user interface to be accessible while the main electronics remain protected in a sealed compartment.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Heat sinks and fin structures act as intermediary thermal management components that conduct heat away from sensitive electronics without requiring direct exposure of the electronics to the external environment. The fins serve as a thermal interface between the internal electronics and external air.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Reliability

If robust protection against heat build-up and liquid intrusion is implemented, then data protection is improved, but accessibility to data via user interface is reduced

Engineering Contradiction:

Improvedata protectionVSAvoiddata accessibility

Core Design Contradiction:

ReliabilityVSEase of operation

Solution Approach 1:

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The top cover is designed to be removable or pivotable, transforming from a static sealed structure to a dynamic configuration that allows temporary access. This enables the interface to switch between protected and accessible states as needed.

Inventive Principle:

Principle #15Dynamics

3Ease of repair

If piece part count is reduced for ease of serviceability, then maintenance becomes easier, but integration of cooling and protection features becomes more complex

Engineering Contradiction:

ImproveserviceabilityVSAvoidintegration of cooling and protection

Core Design Contradiction:

Ease of repairVSDevice complexity

Solution Approach 1:

Multiple functions are merged into single components: the top cover integrates both drip diversion channels and cooling fin structures, the housing combines RF shielding with structural protection, and heat sinks are integrated directly into the housing rather than being separate assemblies. This reduces part count while maintaining functionality.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

Components are designed to perform multiple functions: the fin structures serve both as cooling elements and drip diversion channels, the housing provides both structural support and RF shielding, and the top cover integrates both user interface access and environmental protection features.

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 design provides effective ventilation for cooling, protection against liquid intrusion, and reduced RF emissions, while ensuring easy access to user interfaces and minimizing piece part count for enhanced serviceability and data protection.

Implementation Method 1

A video recorder design featuring a main chassis housing, top cover, and bezel configuration that forms channels for airflow and liquid diversion, integrating a fin arrangement for improved cooling

Methodology Applied

Scientific EffectConvection: Convection

Implementation Method 2

integrating a fin arrangement for improved cooling

Methodology Applied

Scientific EffectThermal radiation: Thermal Radiation

Implementation Method 3

The channels provide for liquid to be diverted away from the fan intake openings

Methodology Applied

Scientific EffectGravity: Gravitation

Implementation Method 4

integrating a fin arrangement for improved cooling, drip protection, and RF shielding

Methodology Applied

Scientific EffectElectromagnetic shielding: Faraday Cage

Data Source

PatentUS11330736B1Video recorder with cooling and drip protection

Publication Date: 2022.05.10 MOTOROLA SOLUTIONS INC

AI summary

A video recorder (100) is configured and assembled to provide improved ventilation for cooling and improved protection against liquid intrusion. The video recorder is formed of a main chassis housing, a top cover, and a bezel for coupling the top cover to the main chassis housing. Once assembled, channels are formed which provide paths for both liquid egress and airflow intake. The channels allow airflow into fan intake openings located within a top portion of the main chassis housing. The channels further provide for liquid to be diverted away from the fan intake openings.