LED ACADEMY>1. LED´s Basics>2. LED´s Optics>3. LED´s Thermal>
- 3.1 Introduction
- 3.2 Heat transfer introduction
- 3.3 Power conversion
- 3.4 LED performance
- 3.5 Thermal design of LED-based luminaire
- 3.6 Cooling system
- 3.7 Thermal design of passive cooling
- 4.1 Cold lumens versus hot lumens
- 4.2 Driving LEDs
- 4.3 LED connection
- 4.4 LED driver
- 4.5 LED driver additional features
- 5.1 High Efficacy
- 5.2 Controllability
- 5.3 Size
- 5.4 Directionality
- 5.5 Durability
- 5.6 Low-temperature operation
- 5.7 Instant on, frequent switching
- 5.8 No UV emissions
- 5.9 Environmental impact
- 5.10 Reliability and lifetime
- 6.1 The Right Light Application
- 6.2 Presentation and retail shop, shopping mall
- 6.3 Industry and engineering, outdoor workplaces
- 6.4 Office and communication
- 6.5 Hotel and gastro
- 6.6 Architecture, facade, city marketing and visual presentation
- 6.7 Road path and square
- 6.8 House, flat and living area
- 6.9 Emergency lighting
- 7.1 High brightness LED market
- 7.2 Lighting Efficiency Comparison
- 7.3 HB LED
- 7.4 LED luminaire cost track
- 7.5 LED retrofits versus LED luminaires
3.5 Thermal design of LED-based luminaire
From the thermal design point of view, typical LED-based luminaire consists of an LED light source, a printed circuit board (PCB) and a cooling system. The LED light source incorporates semiconductor die (active part), optics, casing, and heat slug which is used to withdraw the heat away from the die. Heat slug is soldered to the PCB (mostly metal core PCB – MCPCB).
Figure 3.5.1 shows simplified setup of typical LED luminaire being simulated with basic input/output parameters.
Figure 3.5.1: Simplified setup of typical LED luminaire being simulated with basic input/output parameters.
 |
 |