Lamp Reflector Shade Airflow Cooling Design
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Solution Overview
Problem
Conventional optical projector lamps experience low heat-dissipating efficiency, leading to high temperatures and potential deformation of the shade due to inadequate airflow exit paths.
Innovation Solution
The design includes a reflector with a first opening and a bottom portion, where the lampwick is disposed, and a shade connected to the bottom portion with a first inlet and outlet, allowing airflow between the reflector and shade to exit through an acute angle, enhancing heat dissipation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If the first air flow flows into the space between the reflector and the shade, then the cooling effect is improved, but the air flow does not easily flow out and the temperature of the side opposite to the airflow generator becomes high
Solution Approach 1:
The shade is divided into multiple parts: a first shade portion covering part of the reflector, and a second shade portion extending from the first shade portion away from the reflector. The first air inlet is formed in the first shade portion, and the first air outlet is formed in the second shade portion. This segmentation allows the air flow to enter through the first inlet, cool the reflector, and exit through the first outlet positioned at the opposite side, creating an effective cooling path that resolves the contradiction between cooling effect and heat-dissipating efficiency.
Solution Approach 2:
The air outlet is positioned in a different spatial dimension (the second shade portion extending away from the reflector) rather than directly opposite the air inlet. This dimensional arrangement allows the cooled air to naturally rise and exit through the upper portion, creating a convection current that improves heat dissipation efficiency while maintaining effective cooling of the reflector surface.
2Illumination intensity
If the shade covers a part of the reflector, then the light control is improved, but the shade is easily deformed due to high temperature
Solution Approach 1:
The shade is segmented into a first shade portion and a second shade portion, with the first air inlet formed in the first shade portion and the first air outlet formed in the second shade portion. This segmentation allows strategic placement of air flow paths through the shade structure, cooling critical areas while maintaining light control functionality, thereby preventing deformation without compromising illumination control.
Solution Approach 2:
The first air flow acts as an intermediary cooling medium that passes through the shade structure. The air flow enters through the first inlet, absorbs heat from the reflector and shade components, and exits through the first outlet. This intermediary cooling process reduces the temperature of the shade, preventing deformation while allowing the shade to maintain its light control function.
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 reduces the temperature of the reflector and shade, preventing deformation and improving heat-dissipating efficiency compared to conventional designs.
Implementation Method 1
A first air flow is adapted to flow into the space between the reflector and the shade through the first inlet. At least one part of the first air flow flows through the first outlet along a first flowing direction.
Data Source
AI summary
A lamp includes a lampwick, a reflector, and a shade. The reflector has an opening and a bottom portion opposite to the opening. The lampwick is disposed at the bottom portion and passes through the bottom portion and at least one part of the lampwick is disposed in the reflector. The shade disposed outside the reflector covers a part of the reflector. The shade connected to the bottom portion has an inlet and an outlet. The inlet and the outlet are disposed at two opposite sides of the reflector respectively. An air flow flows into the space between the reflector and the shade through the inlet. At least one part of the air flow flows through the outlet along a flowing direction. An included angle defined between the flowing direction and a transmitting direction of an illumination light beam formed by the reflector is an acute angle.