Projector Bulb Airflow Guide With Gravity-Responsive Flapper
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Solution Overview
Problem
Conventional projector airflow guiding devices fail to effectively minimize the temperature difference between the upper and lower portions of a bulb, leading to reduced service life, especially when the projector is used upside down.
Innovation Solution
A guiding device with a flapper mechanism that adjusts airflow direction based on gravity to ensure the second airflow primarily cools the upper portion of the bulb, reducing temperature disparities regardless of the projector's orientation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If a fixed baffle is disposed on the lower portion of the second outlet to guide airflow toward the upper portion of the bulb, then the temperature difference between upper and lower portions is reduced when the projector is upright, but the temperature difference increases when the projector is used upside down
Solution Approach 1:
The patent replaces the fixed baffle with a movable flapper that can dynamically adjust its position based on the direction of gravity. The flapper is hinged and free to move, allowing it to automatically reorient itself when the projector changes orientation, thus maintaining effective cooling of the upper bulb portion in both upright and upside-down positions
Solution Approach 2:
The flapper utilizes the force of gravity and airflow pressure to automatically position itself in the correct orientation without requiring external control mechanisms. When the projector is upright, the flapper hangs downward; when inverted, it automatically flips to hang in the opposite direction, self-adjusting to maintain proper airflow direction toward the bulb's upper portion
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 effectively prolongs the service life of the bulb by uniformly cooling the upper and lower portions, maintaining temperature balance in various usage positions.
Implementation Method 1
The flapper moves along a direction of gravity to partially cover the second outlet so that the second airflow flows toward a portion of the bulb away from the direction of gravity
Data Source
AI summary
A guiding device and a projector comprising the same are provided. The projector comprises a blower and a bulb. The blower is used for cooling the bulb. The guiding device is disposed between the blower and the bulb, and comprises a body and a flapper. The body of the guiding device is formed with a first outlet and a second outlet. The first outlet and the second outlet are adapted to guide the blower to form a first airflow and a second airflow, respectively. The flapper is disposed in the second outlet and moves along a direction of gravity to partially cover the second outlet to force the second airflow to flow towards a portion of the bulb away from the direction of gravity.