Duct Cooling System for Image Sensor Heat Dissipation
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Solution Overview
Problem
Conventional image capturing apparatuses face challenges in effectively dissipating heat generated by high-performance image sensors and recording media, leading to reduced performance due to increased temperature, especially when compacted in smaller sizes.
Innovation Solution
The apparatus incorporates a duct-based cooling system with a fan that directs air flow through ducts connected to circuit boards via elastic heat transfer members, ensuring efficient heat dissipation without increasing the device's size, and includes a rib-shaped member within the duct to enhance airflow and heat transfer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the image capturing apparatus is reduced in size, then the device becomes more compact, but the space for arranging circuit boards is reduced and heat dissipation becomes more difficult
Solution Approach 1:
The duct is integrated into the medium card holder structure, with the air flow passage nested within the holder body. The rib-shaped member is positioned inside the duct, creating a nested arrangement that maximizes heat dissipation efficiency without increasing the overall device volume. The duct connects to both the medium card holder and the image sensor, forming a nested cooling system that serves multiple components simultaneously.
2Productivity
If higher transfer rate is used for the medium card, then the recording capacity is improved, but the power consumption increases and generates more heat
Solution Approach 1:
The duct acts as an intermediary heat transfer channel between the medium card and the external environment. Air is drawn through the duct, which is thermally connected to the medium card holder, allowing heat to be carried away from the medium card. The rib-shaped member enhances this intermediary heat transfer process by increasing the surface area for heat exchange without interfering with the data transfer function.
3Temperature
If a fan and duct system is added for heat dissipation, then the cooling performance is improved, but the device complexity increases
Solution Approach 1:
The duct is merged with the medium card holder structure, eliminating the need for separate housing components. The air flow passage is integrated into the holder body, and the rib-shaped member is incorporated as part of the duct assembly. This merging reduces the number of discrete parts and simplifies the overall cooling system while maintaining effective heat dissipation performance.
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 configuration effectively cools both the image sensor and recording media, maintaining performance while minimizing the apparatus's size, by efficiently transferring heat away from critical components and preventing overheating.
Implementation Method 1
a first duct that is connected to one surface of the first circuit board via a first elastic heat transfer member, a second duct that is connected to another surface of the first circuit board via a second elastic heat transfer member
Implementation Method 2
a fan that causes air to flow in the air flow passage in the duct
Implementation Method 3
a rib-shaped member provided within the duct to enhance airflow and heat transfer
Data Source
AI summary
An image capturing apparatus that is improved in performance for cooling an apparatus body and a recording medium. The image capturing apparatus includes an image sensor, a circuit board disposed substantially parallel to the image sensor, and a cooling unit configured to cool at least one of the image sensor and the circuit board. The cooling unit includes a duct having an air flow passage crossing an optical axis of the image sensor, and a fan that causes air to flow in the air flow passage in the duct. An air inlet port and an air outlet port of the duct are disposed adjacent to each other such that the air outlet port does not face toward the air inlet port.