Neon Lamp

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Neon lamp

Consists of a glass tube from which the air is extracted and neon gas added. The tube glows when current flows through it.

Neon Lamp


a low-pressure gas-discharge light source in which visible radiation is produced by a discharge in a neon atmosphere. The best-known neon lamps are the glow-discharge signal lamps, in which the orange-red luminescence of the discharge regions adjacent to the cathode is used. The lamps are filled with a mixture of neon and helium. To decrease the discharge voltage, a small quantity of argon is introduced into the gas mixture, and the surface of the cathode may be coated with a thin layer of an activating substance. The lamps operate on alternating or direct current. Their power is 0.01 to 10 watts (W), their light flux is 0.02 to 5 lumens (lm), and their current ranges from fractions of a milliampere (mA) to 20–30 mA. In cold-cathode neon lamps used in advertising (fluorescent lamps), the glow of the positive column of the glow discharge is used.

Neon arc lamps with a heater cathode are used as airport beacons; their power is of the order of 500 W, and their luminous efficiency is up to 10 lm/W. They operate reliably at ambient temperatures from —40° to 40°C. The luminous efficiency of mercuryless, fluorescent neon arc lights (about 25 lm/W) exceeds that of red-fluorescent mercury lamps by a factor of 3 and is determined by the visible radiation of the positive discharge column and the fluorescence of a phosphor layer (such as Y2O3 or activated europium) deposited on the walls of the tube. The lighting and electrical parameters of fluorescent neon lamps, in contrast to those of fluorescent mercury lamps, do not depend on the ambient temperature.


neon lamp

1. A cold-cathode lamp whose principal light radiation is due to passage of an electric current through neon gas.
2. Any cold-cathode glass-tubing lamp, such as that used for electric signs, regardless of the type of gas that fills the lamp or the presence of phosphors or filters to control color.
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Table--1 Producers of bulbs and neon lamps and capacity, 2003 Name of Total Prod.
Before it was introduced in the country, electric lamp producers produced only electric bulbs and neon lamps (fluorescent lamps).
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A line of miniature neon lamps that operate directly from 110/220V AC for use as indicators in switches and fuse boxes in appliances and instruments has been introduced by Gilway Technical Lamp.
Exemplifying its strategic direction, Highway Holdings said that during the past year, it received about $4 million in orders from the LCS subsidiary of Osram/Siemens to produce metal cases for electronic switching gear used in neon lamps, many of which go to the US market under the Sylvania brand, an Osram subsidiary.
Of industrial waste, green waste, rubble and neon lamps and fluorescent lamps,
Neon lamps from 1/25W to 1/2W feature: wire terminal, single/double contact, bayonet, flanged and candelabra screw bases.
Lighted switches feature both AC-powered neon lamps and DC-powered tungsten filament lamps.
Supply of neon lamps and for RATP buses with minimum and maximum estimate with no obligation by reference consumption.