Rotary Fan Heat Dissipation Duct Overlap Design
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Solution Overview
Problem
Image capturing apparatuses face challenges in achieving efficient heat dissipation while maintaining a compact size, particularly when the distance from the air inlet port to the fan is insufficient, leading to reduced heat discharging efficiency and increased product size due to the need for improved heat dissipation structures.
Innovation Solution
The implementation of a rotary fan with a suction port and discharge port, combined with a heat dissipation duct featuring intake and exhaust openings, intake-side fins, and a unique duct structure that allows for efficient air flow and heat transfer, ensuring that the projected shadows of the fins and fan overlap, optimizing air flow paths and reducing the apparatus's size.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If the distance from air inlet port to fan is increased to improve heat dissipation efficiency, then heat discharging efficiency is improved, but the apparatus size increases
Solution Approach 1:
The patent applies dimensionality change by arranging the intake-side fins in an overlapping projection relationship with the fan along the rotational axis direction, and extending the fins in the air discharge direction beyond the fan's end position. This spatial arrangement allows the air inlet opening and fan suction port to communicate effectively without requiring increased distance, thus improving heat dissipation efficiency while maintaining compact apparatus size.
2Loss of energy
If a duct is extended rearward and upward to improve heat dissipation performance, then heat dissipation efficiency is improved, but the apparatus size increases due to dead space
Solution Approach 1:
The patent utilizes the gripping portion space by arranging the fan and duct structure within the existing apparatus volume. The intake-side fins extend in the air discharge direction to overlap with the fan projection, effectively using the three-dimensional space without creating dead space, thereby improving heat dissipation performance while avoiding apparatus size increase.
Solution Approach 2:
The gripping portion, which would otherwise be dead space, is made functional by integrating the fan and duct structure within it. This allows the gripping portion to serve dual purposes: maintaining its original function while also housing the heat dissipation components, thus improving heat dissipation without increasing overall apparatus size.
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 enhances heat dissipation efficiency while preventing an increase in size, allowing for effective cooling of heat-generating components within a compact design.
Implementation Method 1
a rotary fan that includes a suction port and a discharge port and is rotated to draw air from the suction port and discharge air from the discharge port
Implementation Method 2
a heat dissipation duct for cooling the processing circuit board
Implementation Method 3
heat dissipation duct including an intake opening, an exhaust opening, and intake-side fins
Data Source
AI summary
An image capturing apparatus improved in heat dissipation efficiency while avoiding increase in size. A rotary fan is rotated to draw air from a suction port and discharge air from a discharge port. A heat dissipation duct includes an intake opening, a discharge opening, intake-side fins, an intake-side duct portion, and an exhaust-side duct portion. Projected shadows of at least part of the intake-side fins and at least part of the rotary fan overlap each other, as viewed from a direction of a rotational axis of the rotary fan. Ends of the intake-side fins toward the intake opening and the exhaust opening are closer thereto than ends of the rotary fan toward the same, respectively. The intake opening and the suction port of the rotary fan communicate with each other via a space adjacent to the end of the intake-side fins toward the discharge opening.