Lighting Apparatus Forced Convection Cooling
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Solution Overview
Problem
Existing lighting apparatuses with image projecting functions do not adequately address heat dissipation from semiconductor light-emitting elements and circuit components, leading to reduced luminous efficiency and lifespan due to internal temperature increases from multiple heat sources.
Innovation Solution
A lighting apparatus with a fan system that creates an air flow path within the housing to efficiently dissipate heat from the light-emitting element and projector by using air intake and outlet positions that allow air to pass through the illumination light source and projector, enhancing cooling efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple heat sources (illumination light source and projector) are installed in the housing, then the lighting apparatus can provide both illumination and image projection functions, but the internal temperature rises due to heat generation from multiple sources, reducing luminous efficiency and lifetime of components
Solution Approach 1:
The housing internal space is segmented into multiple regions: an upper region containing the fan and air outlet for heat dissipation, and a lower region containing the illumination light source and projector. This spatial segmentation allows heat sources to be separated from the exhaust path while maintaining their functional integration.
Solution Approach 2:
A forced convection cooling system using a fan is implemented to create controlled air flow through the housing. Air is drawn in from the lower portion, passes through the heat-generating components, and is exhausted from the upper portion, efficiently removing heat from both the illumination light source and projector.
2Loss of energy
If air flow path is designed to pass through illumination light source and projector, then heat dissipation efficiency is improved, but the housing structure becomes more complex with specific air intake and outlet positioning requirements
Solution Approach 1:
The housing structure serves multiple functions simultaneously: it provides mechanical support for components, defines the air flow path for cooling, and acts as a thermal management system. The air intake and outlet positions are integrated into the housing design rather than being separate components, reducing overall system complexity.
Solution Approach 2:
The cooling system is merged with the housing structure itself. The housing walls and partitions are designed to guide air flow, and the air intake/outlet openings are incorporated directly into the housing rather than requiring separate ducts or channels. This integration eliminates the need for additional cooling-specific components.
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 reduces adverse heat effects, improving the practical use and lifespan of the lighting apparatus by efficiently dissipating heat from multiple sources, thereby maintaining image quality and component longevity.
Implementation Method 1
a fan disposed in an upper portion inside the housing, wherein air intake and air outlet are formed at such positions in the housing that air flow generated by the fan is sucked from a lower portion of the housing, passes upward through a vicinity of the illumination light source and the projector, and is exhausted from the upper portion of the housing
Data Source
AI summary
A lighting apparatus which is held in a state of being suspended from a mounting bracket fixed to a ceiling surface and emits illumination light is provided, and the lighting apparatus includes: an illumination light source for generating the illumination light disposed inside a housing; a projector disposed in an inner space of the housing and configured to project an image onto a projection surface; and a lint disposed in an upper portion inside the housing, wherein an air intake and an air outlet are formed at such positions in the housing that air flow generated by the fan is sucked from a lower portion of the housing, passes upward through a vicinity of the illumination light source and the projector, and is exhausted from the upper portion of the housing.