Dew and frost resistant signs

Details Dew and frost resistant signs Dew and frost resistant signs

G - Physics

09

F

G09F 7/00 (2006.01) G09F 13/16 (2006.01)

Patent

CA 2082062

2082062 9119281 PCTABS00008 Signs comprising an outer layer (12) having indicia thereon and a thermal reservoir (16) behind the outer layer. The thermal reservoir (16) contains at least one phase change material that, during periods of falling ambient temperature, yields a latent heat of transition thereby tending to maintain the temperature of the outer layer above what it otherwise would have been. As a result of such higher temperatre, the outer layer of the sign is more resistant to formation of dew or frost thereon and retains a greater degree of legibility.

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