Thermal Modeling of Outdoor Digital Displays Under Different Brightness Outputs

• Published in: IEEE transactions on components, packaging, and manufacturing technology (2011) Vol. 10; no. 6; pp. 949 - 955
• Main Authors: Kim, Jeho, Michael Brown, J., O'Connor, Kevin, Diaz, Marcos, Joshi, Yogendra
• Format: Journal Article
• Language: English
• Published: Piscataway IEEE 01.06.2020; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: Backlight; Brightness; Computational fluid dynamics; computational fluid dynamics (CFD); Computer simulation; Cooling; direct-lit; Displays; Glass; heat transfer (HT); light emitting diode (LED); Light emitting diodes; liquid crystal display (LCD); Liquid crystal displays; Mathematical models; MRI; outdoor digital display; Product design; Prototyping; Software; solar irradiance; Testing; Thermal analysis; Thermal design; thermal model
• ISSN: 2156-3950; 2156-3985
• DOI: 10.1109/TCPMT.2020.2993521

The thermal design process for electronic products often minimizes the use of computational fluid dynamics and heat transfer (CFD/HT) software in favor of quick prototyping and testing to determine the thermal characteristics of the product. For large-scale products with many thermal challenges, such a strategy can be impractical due to the high cost of prototyping cycles, time constraints, and inevitable iterations involved. In such cases, thorough CFD/HT models developed early in the design process are valuable for driving the product design. Based on this idea, the study examines thermal performance of 55" outdoor digital displays using CFD/HT tools and a prediction under hazardous outdoor condition is made for two different brightness outputs. The prediction is extrapolated and validated through the outdoor testing and simulation comparisons. It is shown that CFD/HT software can be used as a means of making conservative design choices.