Light emitting sign and display surface therefor

Details Light emitting sign and display surface therefor Light emitting sign and display surface therefor

2011-05-10

2011-05-10

Hoge, Gary C (Department: 3611)

Card, picture, or sign exhibiting

Illuminated sign

Luminescent

C040S546000, C362S084000, C362S293000

Reexamination Certificate

active

07937865

ABSTRACT:
A light emitting sign comprising a light emitting display surface including at least one phosphor, and at least one radiation source configured to irradiate the display surface with excitation energy such that the phosphor emits light of a selected color. The sign further comprises a filter which is substantially transparent to light emitted by the display surface, filtering other colors of light. The display surface may be configured into a shape of a character, a symbol, or a device. Alternatively, a mask having at least one window substantially transparent to the emitted light and/or at least one light blocking region may be provided in which the window and/or light blocking region define a character, a symbol, or a device.

REFERENCES:
patent: 3504214 (1970-03-01), Cox et al.
patent: 6250767 (2001-06-01), Kusafuka et al.
patent: 6299338 (2001-10-01), Levinson et al.
patent: 6883926 (2005-04-01), Wojnarowski
patent: 2003/0218180 (2003-11-01), Fujiwara
patent: 2003/0227007 (2003-12-01), Ezuhara et al.
patent: 2006/0001037 (2006-01-01), Schardt et al.

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