US1746024A - Electroluminescent tube beacon - Google Patents

Electroluminescent tube beacon Download PDF

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Publication number
US1746024A
US1746024A US349587A US34958729A US1746024A US 1746024 A US1746024 A US 1746024A US 349587 A US349587 A US 349587A US 34958729 A US34958729 A US 34958729A US 1746024 A US1746024 A US 1746024A
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United States
Prior art keywords
tube
beacon
electroluminescent
diameter
cylinder
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US349587A
Inventor
Sr Alfred L Brandt
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FLEXLUME Corp
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FLEXLUME CORP
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by FLEXLUME CORP filed Critical FLEXLUME CORP
Priority to US349587A priority Critical patent/US1746024A/en
Application granted granted Critical
Publication of US1746024A publication Critical patent/US1746024A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00—Gas-discharge or vapour-discharge lamps
    • H01J61/02—Details
    • H01J61/30—Vessels; Containers
    • H01J61/32—Special longitudinal shape, e.g. for advertising purposes
    • H01J61/327—"Compact"-lamps, i.e. lamps having a folded discharge path

Definitions

  • This invention relates to improvements in electroluminescent or neon tube constructions proposing a construction which is particularly useful as a beacon in airports and the like.
  • the principal object of this invention is to eliminate the need of tubes of increased diameter together with their attendant objections.
  • a further object is to secure increased brilliancy of light by a construction involving a neon tube of ordinary or standard diameter and current capacity.
  • a still further object is to provide a simple sturdy construction which may be readily cleaned.
  • Figure 2 is a section along line 2-2 of Fig. 1.
  • the display portion of an electroluminescent tube 1 is formed with a series of closely spaced convolutions 2.
  • These convolutions may be of any suitable form but preferably are made in the form of a spiral, the spirals preferably being of uniform diameter. While this tube may be of various diameters, a tube of rela:
  • this band of light when illuminated and viewed from a distance, appears as a single broad band of light having the same effect as a single tube of a diameter equal to the diameter of the spirals but of considerably greater brilliance.
  • the breadth of this band of light may be, and preferably is, increased by the provision of one or more mirrors extending adjacent to the tube. In the construction shown, two mirrors 3 and 4 are utilized, these being placed at either side of the tube and supported in any suitable manner.
  • the spirally formed tube 1 has a pronounced measure of flexibility and, in accordance with the invention, is enclosed within, and supported by, a substantially rigid glass cylinder 5.
  • the opposite ends of the cylin der 5 preferably are joined to the walls of the tube 1 thereby preventing the access of dirt to the spiral portion 2 of, the tube while the intermediate portion of the cylinder preferably engages the spiral portion 2 at various points along its length tosupport the same.
  • the cylinder 5 affords the necessary rigidity of the structure notwithstanding the flexibility of the spiral portion 2.
  • the brilliancy of the tube may be increased by providing the rear half of the cylinder 5 with a mirrored coating. While such coating might be placed on the outer surface of the cylinder 5, it preferably would be placed on the inner side of the cylinder where it would be protected against dirt and the elements. Instead of a coating, strictly so-called, a bright plate of metal might be used and secured to either the outer or inner face of the.
  • an electroluminescent tube hav-' ing a disp a, portion arranged in the form of a spiral an a substantially rigid sleeve enclosing said spiral portion and engaging the same to support it at points along'its length.

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  • Electroluminescent Light Sources (AREA)
  • Road Signs Or Road Markings (AREA)

Description

e 4, 3 A. L. BRANDT. SR 1,746,024
' I ELECTROLUMINESCENT TUBE BEACON Filed March 25, 1929 Patented Feb. 4, 1930 UNITED STATES PATENT OFFICE ALFRED L. BRANDT, SR., OF BUFFALO, NEW YORK, ASSIGNOR TO FLEXLUME CORPO- RATION, OF TONAWANDA, NEW YORK, A. CORPORATION OF NEW YORK ELECTROLUMINESCENT TUBE BEACON Application filed March 25, 1929. Serial No. 849,587.
This invention relates to improvements in electroluminescent or neon tube constructions proposing a construction which is particularly useful as a beacon in airports and the like.
The use of neon or other electroluminescent tubes as beacons is particularly desirable in airports due, among other things, to the fogpenetrating powers of the light emanating from the tubes. In order to increase the amount of the light, it has been proposed to increase the diameter of the tubes. While this may be easily accomplished, it has the objections of necessitating a special transformer to accommodate the increased current requirement and of increasing the number of tube breakdowns due to the heat evolved within the tube as a result of the increased current.
Furthermore, with a tube of increased diameter, the brilliancy of light is decreased with- I in practical current values.
The principal object of this invention is to eliminate the need of tubes of increased diameter together with their attendant objections.
A further object is to secure increased brilliancy of light by a construction involving a neon tube of ordinary or standard diameter and current capacity.
A still further object is to provide a simple sturdy construction which may be readily cleaned.
An embodiment of the invention is illustrated in the accompanying drawings, where- Figure 1 is a plan view of the construction.
Figure 2 is a section along line 2-2 of Fig. 1.
In accordance with my invention, the display portion of an electroluminescent tube 1 is formed with a series of closely spaced convolutions 2. These convolutions may be of any suitable form but preferably are made in the form of a spiral, the spirals preferably being of uniform diameter. While this tube may be of various diameters, a tube of rela:
tively small diameter, as compared with ordinary or standard diameters, is preferred. A
tube of this form, when illuminated and viewed from a distance, appears as a single broad band of light having the same effect as a single tube of a diameter equal to the diameter of the spirals but of considerably greater brilliance. I The breadth of this band of light may be, and preferably is, increased by the provision of one or more mirrors extending adjacent to the tube. In the construction shown, two mirrors 3 and 4 are utilized, these being placed at either side of the tube and supported in any suitable manner.
The spirally formed tube 1 has a pronounced measure of flexibility and, in accordance with the invention, is enclosed within, and supported by, a substantially rigid glass cylinder 5. The opposite ends of the cylin der 5 preferably are joined to the walls of the tube 1 thereby preventing the access of dirt to the spiral portion 2 of, the tube while the intermediate portion of the cylinder preferably engages the spiral portion 2 at various points along its length tosupport the same. Obviously, to clean the tube it is only necessary to clean the outer walls of the cylinder which may be readily accomplished. Furthermore, the cylinder 5 affords the necessary rigidity of the structure notwithstanding the flexibility of the spiral portion 2.
In constructions where the use of the mirrors 3 and 4 is not desired or necessary, the brilliancy of the tube may be increased by providing the rear half of the cylinder 5 with a mirrored coating. While such coating might be placed on the outer surface of the cylinder 5, it preferably would be placed on the inner side of the cylinder where it would be protected against dirt and the elements. Instead of a coating, strictly so-called, a bright plate of metal might be used and secured to either the outer or inner face of the.
2. A construction of the class described,
comprisin an electroluminescent tube hav-' ing a disp a, portion arranged in the form of a spiral an a substantially rigid sleeve enclosing said spiral portion and engaging the same to support it at points along'its length.
In testimony whereof I aflix my signature.
ALFRED L. BRANDT, SR.
US349587A 1929-03-25 1929-03-25 Electroluminescent tube beacon Expired - Lifetime US1746024A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US349587A US1746024A (en) 1929-03-25 1929-03-25 Electroluminescent tube beacon

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US349587A US1746024A (en) 1929-03-25 1929-03-25 Electroluminescent tube beacon

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US1746024A true US1746024A (en) 1930-02-04

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2434980A (en) * 1943-08-20 1948-01-27 Maxwell M Bilofsky Combination illuminating and sterilizing lamp
US3764844A (en) * 1972-04-28 1973-10-09 A Schmidt Gas discharge lamp and method for making same
US20030019145A1 (en) * 2000-09-18 2003-01-30 W.C. Bradley/Zebco Holdings, Inc. Battery powered lighted rod
US20040022052A1 (en) * 2002-06-14 2004-02-05 Tseng-Lu Chien Tubular electro-luminescent light incorporated with device(S)
US20080121823A1 (en) * 2006-11-07 2008-05-29 Lennox Manufacturing Inc. Ultraviolet lamp with absorptive barrier
US20080266833A1 (en) * 2005-07-22 2008-10-30 Thomas Jeffery A Illuminated Rigid Body Using Contiguously Illuminated Light Source
USD757324S1 (en) * 2014-04-14 2016-05-24 Cree, Inc. Linear shelf light fixture with reflectors

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2434980A (en) * 1943-08-20 1948-01-27 Maxwell M Bilofsky Combination illuminating and sterilizing lamp
US3764844A (en) * 1972-04-28 1973-10-09 A Schmidt Gas discharge lamp and method for making same
US20030019145A1 (en) * 2000-09-18 2003-01-30 W.C. Bradley/Zebco Holdings, Inc. Battery powered lighted rod
US7051470B2 (en) * 2000-09-18 2006-05-30 W.C. Bradley/Zebco Holdings, Inc. Battery powered lighted rod
US20040022052A1 (en) * 2002-06-14 2004-02-05 Tseng-Lu Chien Tubular electro-luminescent light incorporated with device(S)
US6945663B2 (en) * 2002-06-14 2005-09-20 Tseng-Lu Chien Tubular electro-luminescent light incorporated with device(s)
US20080266833A1 (en) * 2005-07-22 2008-10-30 Thomas Jeffery A Illuminated Rigid Body Using Contiguously Illuminated Light Source
US20080121823A1 (en) * 2006-11-07 2008-05-29 Lennox Manufacturing Inc. Ultraviolet lamp with absorptive barrier
US7566359B2 (en) 2006-11-07 2009-07-28 Lennox Manufacturing Inc. Ultraviolet lamp with absorptive barrier
USD757324S1 (en) * 2014-04-14 2016-05-24 Cree, Inc. Linear shelf light fixture with reflectors

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