Media Chassis Heat Bridge and Shield for Passive Cooling
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Solution Overview
Problem
Conventional media devices face challenges in effectively transferring heat away from integrated circuit chips or insulating components due to spatial constraints and noise considerations, particularly in low-profile designs where active cooling systems like fans are inefficient and thermal insulation methods are inadequate.
Innovation Solution
A thermally conductive chassis with integrated heat bridges and heat shields that protrude from the internal surface to dissipate heat externally and shield adjacent components from thermal energy, respectively, allowing for efficient heat management without the need for fans.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If conventional fan systems are used for cooling, then heat dissipation is achieved, but spatial envelope requirements increase and device profile becomes larger
Solution Approach 1:
The patent merges the cooling function with the chassis structure itself by integrating heat sinks directly into the housing panels. The chassis panels are designed with internal cavities and fin structures that serve dual purposes: structural support and thermal dissipation. This eliminates the need for separate fan systems and reduces overall device volume.
Solution Approach 2:
The chassis structure provides its own cooling capability through thermally conductive materials and geometric designs that facilitate passive heat dissipation. The housing acts as its own heat sink, eliminating dependence on external active cooling components and reducing spatial requirements.
2Temperature
If conventional fan systems are used for cooling, then heat dissipation is achieved, but device complexity and noise increase
Solution Approach 1:
The cooling system operates passively without mechanical components. The chassis structure itself, with its thermally conductive materials and geometric features, provides the cooling function without requiring fans, motors, or control systems, thereby reducing device complexity and eliminating noise.
Solution Approach 2:
The patent replaces the mechanical fan-based cooling system with a thermal conduction-based passive cooling system. Heat is dissipated through thermally conductive chassis materials and geometric heat sink structures rather than through mechanical air movement, eliminating moving parts and reducing system complexity.
3Object-affected harmful factors
If thermal insulation methods are used, then component insulation is achieved, but heat transfer effectiveness decreases
Solution Approach 1:
The patent applies different thermal properties to different regions of the chassis. Thermally conductive materials and heat sink structures are positioned near heat-generating components to facilitate heat extraction, while thermally insulating regions are positioned near sensitive components to protect them from heat. This localized thermal management achieves both heat transfer and insulation effectiveness.
Solution Approach 2:
The chassis is segmented into different thermal zones with distinct thermal characteristics. Heat sinks and conductive pathways are strategically positioned in specific regions to manage heat flow, while insulating barriers are placed in other regions to protect sensitive components. This segmentation allows simultaneous heat dissipation and component protection.
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 solution enables effective heat dissipation and protection of components from thermal damage, maintaining high-quality media content delivery in compact, low-profile devices while reducing noise and spatial requirements.
Implementation Method 1
a heat bridge integrally formed with the chassis and protruding from the internal surface, the heat bridge arranged proximate the die to receive thermal energy from the die, the heat bridge in thermal, conductive cooperation with the chassis to transfer the received thermal energy to the external surface of the chassis for dissipation into the environment
Implementation Method 2
a heat shield coupled to the chassis and configured to protrude from the internal surface by an amount that sufficiently shields the electronic component from radiated thermal energy generated by the die
Data Source
AI summary
A media content receiving device, such as a set top box, includes a chassis that incorporates a heat bridge, a heat shield or both. The heat bridge may take the form of a structural wall coupled to, but preferably integrated with, the chassis to facilitate conductive heat transfer into a chassis panel. The heat bridge may be configured to receive heat radiated from a chip having a die to be cooled. The heat shield may take the form of a wall-type structure protruding from a chassis panel. For example, the heat shield may extend from a top panel of the chassis in a fin-like or flange-like manner to provide a thermal barrier between adjacent electrical components arranged on a circuit board. While the heat shield protects the adjacent component from potential thermal damage or degradation, it may also operate to transfer heat into the chassis.