A luminous electric display unit is disclosed in which glass tubing containing inert gas such as neon is entirely or substantially enclosed within a protective housing, thereby providing protection both for the glass tubing and the public.
CROSS REFERENCE TO RELATED APPLICATIONS
This application is a continuation-in-part of U.S. patent application Ser. No. 09/299,895, filed Apr. 27, 1999, now U.S. Pat. No. 6,192,610, which is a continuation-in-part of U.S. patent application Ser. No. 08/819,821, filed Mar. 18, 1997, now abandoned, and is a continuation-in-part of U.S. patent application Ser. No. 08/570,103, filed Dec. 11, 1995, now abandoned which is a continuation of U.S. patent application Ser. No. 08/262,007, filed Jun. 17, 1994, now U.S. Pat. No. 5,533,286.
