Light Source Module Cooling via Directed Airflow
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Solution Overview
Problem
Existing light source modules fail to effectively cool the light source base and electric connections, leading to increased temperatures that cause oxidation and corrosion, reducing the lifespan of lamps, and existing cooling methods either generate excessive noise or are inefficient in temperature reduction.
Innovation Solution
A light source module with a dichroic reflector and a dish-formed heat sink that creates air gaps perpendicular to the center axis, combined with a blower system generating oppositely directed forced air streams through tubes and ducts to direct airflow directly to the light source base and top connections, creating turbulent airflow for enhanced cooling and reducing noise.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If cooling fins surround the reflector, then heat removal is improved, but infrared light is absorbed in the cooling fins and conducted towards the lamp base, increasing temperature and reducing lamp lifetime
Solution Approach 1:
The harmful function of the cooling fins absorbing infrared light and conducting heat to the lamp base is eliminated by replacing them with a dish-formed heat sink that directs heat away from the lamp base through radial airflow paths
Solution Approach 2:
A dichroic reflector is introduced as an intermediary component that reflects infrared light away from the lamp base while allowing visible light to pass through, preventing the heat transfer problem caused by conventional cooling fins
2Temperature
If a fan generates an air stream that surrounds the lamp base, then cooling is improved, but the air stream may carry infrared radiation towards the lamp base, increasing temperature
Solution Approach 1:
The dichroic reflector serves as a mediator that separates the cooling airflow from the infrared radiation path, allowing the fan to cool the lamp base without the airflow carrying harmful infrared radiation towards it
3Stability of the object's composition
If cooling fins are connected mechanically to the reflector, then structural stability is improved, but airflow between the reflector and cooling fins is blocked, reducing cooling efficiency
Solution Approach 1:
The heat sink is segmented into multiple dish-shaped elements arranged radially around the lamp base, creating gaps between them that allow free airflow while maintaining structural stability through the radial configuration
Solution Approach 2:
The cooling structure transitions from a planar fin configuration to a three-dimensional radial dish arrangement, creating volumetric airflow paths that improve cooling efficiency while maintaining structural integrity
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 the temperature of the light source base and electric connections, increasing the lamp's lifespan by up to 50% while minimizing noise and ensuring efficient cooling of optical components, and the use of air gaps and turbulent airflow enhances heat dissipation and reduces infrared radiation impact.
Implementation Method 1
at least one forced air stream is generated by a blower system, which blower system is placed in the light fixture housing, which blower system is connected through at least one tubes, which tubes ends in ducts, which ducts direct an air stream in a direction towards the light source
Implementation Method 2
a dichroic reflector, where at least one heat sink is surrounding the dichroic reflector
Implementation Method 3
A part of the infrared light that is absorbed in the outer reflector is radiated again at lower frequencies and partly towards the lamp base
Implementation Method 4
which heat sink forms air gab between the dish formed heat sink and the dichroic reflector
Implementation Method 5
which dishes are formed to achieve air gabs there between, which air gabs between the dishes are directed mostly perpendicularly to a centre axis for the light source module
Data Source
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AI summary
The present invention relates to a method for generating an air stream for cooling a light source and to a light source module for a light fixture, which light source module comprises cooling means for cooling the light source and the light source base. The object of the invention is to achieve highly effective cooling of a lamp in a light fixture or a projector. This can be achieved by a light source module if at least one forced air streams generated by a blower system, which blower system can be placed in the light fixture housing, which blower system can be connected through a tube, which tube can end in a duct, which duct direct a air stream in a direction towards the light source. By using a tube for the connection between the blowing unit and the actual place where air stream is to be used for cooling, it is possible that the blowing system can be operating in a place where it is possible for the inlet of suction the air into the blowing unit can be placed in a relatively cool place. This leads to the blowing of air with a temperature as low as possible.