Self-de-icing LED Signal

Details

• Creators:
  Cai, Hongyi ; Schrock, Steven ; Fitzsimmons, Eric J.
• Corporate Creators:
  University of Kansas. Dept. of Civil, Environmental and Architectural Engineering ; Kansas State University Transportation Center
• Corporate Contributors:
  Kansas Department of Transportation. Bureau of Research
• Subject/TRT Terms:
  • At grade intersections
  • Deicing
  • Field tests
  • Light emitting diodes
  • Prototypes
  • Railroad signals
  • Signalized intersections
  • Validation
  • Snow and ice control
  • Winter maintenance
  More +
• Publication/ Report Number:
  FHWA-KS-22-04
• Resource Type:
  Tech Report
• Geographical Coverage:
  United States
• Edition:
  August 2016–June 2022
• Corporate Publisher:
  Kansas Department of Transportation. Bureau of Research
• Abstract:
  This Pooled Fund project Transportation Pooled Fund Study TPF-5(351) was aimed at developing and demonstrating a new type of self-de-icing LED signal for highway intersections as a replacement for existing LED signal lights that remain too cold to prevent snow, sleet, and ice buildup on the lens and could cause accidents in snowy conditions. The self-de-icing LED signals adopt a novel system architecture of “Integrated Light and Heat Arrangement of Low Profile Light-Emitting Diode Fixture” (Patent No. US 10,215,441 B2) or “Heated Lens Lighting Arrangement” (Patent No. US 10,253,965 B2, US 9,851,086 B2) for integrative solid-state lighting and heating. The heat generated by the LEDs is harvested by the passive heat exchanger and stored there to continuously heat the signal lens in wintery conditions.
• Format:
  PDF
• Funding:
  C2094 ; RE-0721-01 ; TPF-5 (351)
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/62342/dot_62342_DS1.pdf
• File Type:
  [PDF - 12.53 MB]
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha256:fb988679cfc13219eaea079eaa30bfeb244ab1419861abf7af2ff4a7228f5641