Retro Reflector Cooling System for Lamp Heat Management
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Solution Overview
Problem
Existing illumination systems for moving head lighting fixtures face challenges in efficient cooling, as the cooling air becomes heated while passing over the main reflector, reducing its ability to effectively remove heat from the light source and potentially adding heat instead, and the systems are costly due to complex assembly requirements.
Innovation Solution
A reflector and cooling system design featuring a retro reflector with integrated air inlets and outlets allows for direct, cold cooling air to be directed to the light source while preventing heated air from reaching other parts, and a one-piece retro reflector body integrates cooling and light filtering functions, reducing manufacturing costs and light loss.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If cooling air is provided to cool the light source, then the light source temperature is reduced, but the cooling air becomes heated while passing over the main reflector and can add heat to the light source instead of removing it
Solution Approach 1:
The cooling system is segmented into separate zones: a first cooling air flow path directed at the light source, and a second cooling air flow path for the main reflector. This segmentation prevents heated air from the reflector from contaminating the cooling air for the light source, maintaining cooling efficiency.
Solution Approach 2:
Different cooling strategies are applied to different parts of the system. The light source receives cold cooling air directly from the environment, while the main reflector is cooled by a separate air flow that can be heated without affecting the light source cooling effectiveness.
2Illumination intensity
If a retro reflector is added to increase light intensity, then the light coupling through the optical gate is improved, but the system complexity and manufacturing cost increase
Solution Approach 1:
The retro reflector is merged with the cooling system by integrating air inlet and outlet openings directly into the retro reflector structure. This combining of functions reduces the number of separate components and simplifies assembly while maintaining both light reflection and cooling capabilities.
3Reliability
If multiple components are assembled to achieve cooling and light reflection functions, then the system performance is improved, but the manufacturing cost and assembly complexity increase
Solution Approach 1:
The retro reflector is designed to serve multiple functions simultaneously: it acts as a light reflector to increase intensity, provides structural support, and incorporates cooling air inlet and outlet openings. This multi-functionality reduces the total component count and simplifies manufacturing.
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 design enhances cooling efficiency by ensuring cold air directly reaches the light source, reduces heating of other parts, and simplifies manufacturing by integrating components, thus improving performance and cost-effectiveness.
Implementation Method 1
a retro reflector arranged outside and facing the main reflector and which is adapted to reflect a part of the light generated by the light source back towards the main reflector
Implementation Method 2
a main reflector wherein the light source is arranged and which is adapted to reflect a part of the light generated by the light source along an optical axis
Implementation Method 3
cooling means adapted to cool the light source, and wherein the cooling means comprises a first blower adapted to blow cooling air towards the light source
Data Source
AI summary
The present invention relates to main reflector (115, 215) and cooling system where a light source (109, 209) has been arranged in a main reflector (115, 215) and where cooling air is provided to the light source. The reflector and cooling system comprises a retro reflector (117, 217) arranged outside and facing the main reflector (115, 215) and the retro reflector comprises air inlets (125, 225) for providing cooling air towards the light source and air outlets (127,227) for dissipating heated cooling air from the light source. The system further comprises a separation plate (248) having an aperture (259) between the main reflector and the retro reflector, said separation plate dividing the housing of the system in a first housing compartment (252) where the main reflector is located, and a second housing compartment (256) where the retro reflector is located. The system further comprises a first blower (123, 223) and a second blower (244) to blow cooling air for cooling the light source.