G - Physics – 05 – F
Patent
G - Physics
05
F
G05F 1/00 (2006.01) H05B 41/24 (2006.01) H05B 41/282 (2006.01)
Patent
CA 2301288
An "exit" sign lighting system comprising, in combination, a housing having the word EXIT formed in an opening wall (OP) thereof, a translucent member (TPM) in said opening, a gas discharge device (13), such as a fluorescent tube, is driven from a source (26) of a low-voltage, high-frequency square wave voltage having a pair of output terminals and an LC free circuit connecting the low-voltage, high-frequency square wave voltage to the gas discharge device to non-thermionically excite and illuminate the gas discharge device, and thereby illuminate the translucent member and the word EXIT. The low voltage is from about 2 volts to about 90 volts and the frequency is from about 75 kHz to about 3.5 MHz.
Un système d'éclairage de panneau de "sortie" comprend, conjointement avec un boîtier dans une paroi à ouverture (OP) duquel le mot SORTIE est formé, un élément translucide (TPM) dans ladite ouverture, un dispositif à décharge gazeuse (13), comme un tube fluorescent. Ledit dispositif à décharge gazeuse est excité par une source de basse tension (26), de tension carrée haute fréquence dotée d'une paire de bornes de sortie et d'un circuit LC libre envoyant la tension carrée haute fréquence, basse tension au dispositif à décharge gazeuse de sorte que ce dernier soit excité de manière non thermoionique et soit éclairé, et que l'élément translucide et le mot SORTIE soient éclairés. La tension basse est comprise entre environ 2 volts et environ 90 volts et la fréquence entre environ 75 kHz à environ 3,5 MHz.
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Parra Jorge M.
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