The Main Components Of Neon Signs
Neon lamp is a kind of cold-cathode glow discharge tube. Its radiation spectrum has a strong ability to penetrate the atmosphere. It can be processed and bent into any geometric shape to meet the design requirements. Through electronic program control, patterns and characters that can change colors are welcomed by people.
The bright, beautiful, and dynamic characteristics of neon lights are irreplaceable by any electric light source at present, and they are leading the way in the continuous emergence and competition of various new light sources.
Since the neon lamp is a cold cathode glow discharge, the service life of a qualified neon lamp can reach 20,000--30,000 hours.
The main components of neon signs:
(1) In terms of specifications: there are Ø6, Ø7, Ø8, Ø9, Ø10, Ø12, Ø15, Ø18, Ø20m/m and other thicknesses.
(2) Divided by glass material:
① Sodium glass tubes (or lime glass tubes) are poor in stability, easily deteriorated after being exposed to moisture, efflorescent (weathered), and have poor fastness and are prone to bursting. At present, the use of this material in our country accounts for about 80%.
② Lead glass tube (also known as red lead glass tube) is better than sodium glass in terms of thermal properties, mechanical properties, electrical properties, chemical stability, vacuum performance and optical properties, and its weather resistance and service life are much higher than sodium glass. This kind of lead glass tube is mostly used in general use, and the current usage in my country has reached about 20-30%. All manufacturers who pursue good quality use lead tubes to make neon lights. Lead glass is divided into heavy lead glass, medium lead glass and light lead glass according to the lead content.
③Colored glass tube, this kind of glass tube has been filled with dye when drawing the glass tube, and the produced glass tube is already a colored glass tube.
(3) Divided by phosphor material coated inside neon tubes:
① Most of the neon tubes currently in use are sprayed with "ordinary fluorescent powder", which is relatively cheap and can generally meet the requirements of various colors.
② "Three primary colors" phosphors (also known as rare earth phosphors) are better in brightness, chroma, and freshness than ordinary phosphors.
(4) The process of spraying phosphor is divided into two types: water coating and glue coating.
①Water coating is to use alcohol, ketone solution mixed phosphor to spray on the inner wall of the lamp tube and let it dry naturally.
② Glue coating means spraying with glue mixed with fluorescent powder, and then drying in an oven. Its viscosity and fastness are much better than water-coated powder tubes.
At present, most advanced countries use trichrome glue-coated leaded glass tubes to make neon lights, and some manufacturers in our country currently use this kind of neon light tubes.
