Image Capturing Apparatus Heat Dissipation Duct Design
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Solution Overview
Problem
Image capturing apparatuses face challenges in heat dissipation, leading to potential component malfunction and performance deterioration due to increased heat generation, especially in high-temperature environments, and existing solutions either allow dust entry or increase the device size.
Innovation Solution
An image capturing apparatus with a control circuit, display panel, and heat dissipation fan arrangement that includes a duct with ventilation holes and a centrifugal fan, which effectively directs airflow through heat sources while preventing dust entry and maintaining a compact size.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If a fan is arranged on the bottom surface to exhaust air in a gap between heatsinks, then heat dissipation performance is improved, but dust and dirt easily enter the apparatus from the outside
Solution Approach 1:
The ventilation system is segmented into separate intake and exhaust paths. The exhaust path is positioned on the bottom surface while the intake path is positioned on the rear surface, physically separating the dust-prone exhaust opening from the clean air intake, thus preventing dust entry while maintaining heat dissipation performance
Solution Approach 2:
The duct structure acts as an intermediary component that guides air flow from the rear surface intake through the heatsink gap to the bottom surface exhaust. This intermediary pathway ensures that exhaust air is directed away from the intake, preventing dust from being drawn back into the apparatus
2Temperature
If an L-shaped heatsink and duct including a blower fan is arranged between image capturing element and main board, then heat dissipation is improved, but size of the apparatus is increased
Solution Approach 1:
The ventilation holes are positioned on the bottom surface and rear surface, utilizing the vertical and depth dimensions of the apparatus rather than only the horizontal plane. This three-dimensional arrangement allows effective heat dissipation without requiring additional horizontal space, thus avoiding an increase in apparatus size
Solution Approach 2:
The duct structure is designed to nest within the existing internal space of the apparatus, utilizing the gap between the image capturing element board and the bottom surface. This nested arrangement integrates the heat dissipation system into the existing structure without adding external volume
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 solution provides enhanced heat dissipation performance, suppressing temperature rise and ensuring reliable operation, as demonstrated by reduced temperatures of heat sources within the apparatus.
Implementation Method 1
a heat dissipation structure that performs forced air cooling using a fan
Implementation Method 2
a duct...passes through an area among the image capturing element board, the control circuit board, and the bottom surface side of the exterior member
Data Source
AI summary
An image capturing apparatus, including an image capturing element and having an optical axis, includes a control circuit to control the image capturing apparatus, a display panel arranged on a rear surface side of an exterior member, and a heat dissipation fan arranged on a bottom surface side of the exterior member. An image capturing element board, a control circuit board, and the display panel are arranged in a direction of the optical axis. A duct, extending from a first ventilation hole to a second ventilation hole formed to face the first ventilation hole across the optical axis, passes through an area among the image capturing element board, the control circuit board, and the bottom surface side of the exterior member. The heat dissipation fan is arranged inside the duct arranged in the area, the control circuit board, and the bottom surface side of the exterior member.