Neon light is a type of gas discharge lighting in which an electric current is passed through a glass tube filled with a noble gas (usually neon). This creates a brightly colored glow, often used for advertising, decorative applications, and art installations .
How does neon lighting work?
🔹 An electrical voltage is applied across two electrodes at either end of a glass tube .
🔹 The tube is filled with neon gas or another noble gas such as argon, krypton, or xenon.
🔹 The electrons collide with the gas atoms, causing them to absorb energy and then emit light .
🔹 The color of the light depends on the gas used and any phosphor coatings on the inside of the tube .
Colors of neon light and gases used
| Gas | Colour |
|---|---|
| Neon (Ne) | Bright red/orange |
| Argon (Ar) + mercury | Blue/purple |
| Helium (He) | Yellow/white |
| Krypton (Kr) | Green/white |
| Xenon (Xe) | Blue/white |
| With phosphor coating | Various colors such as pink, green and purple |
💡 Neon itself only emits red light , but by using other gases or coatings, different colors can be produced.
Benefits of neon lighting
✅ Unique appearance – Classic, eye-catching neon signage that cannot be matched by other technologies.
✅ Long Lifespan – Neon lights can last 15-20 years without replacement.
✅ Flexible design – Glass tubes can be bent into all kinds of shapes.
✅ Good visibility – Neon lights are very bright, even in fog or rain.
Neon vs. LED neon
Due to energy consumption and maintenance costs, classic neon lighting is increasingly being replaced by LED neon , which has a similar appearance but:
- Less energy consumed
- Produces less heat
- More flexible in installation and maintenance
However, classic neon remains popular for high-end applications and an authentic retro look.
Where is neon light used?
🏢 Advertising & facade lighting – Bars, restaurants, shops and casinos.
🎨 Art & Interior Design – Neon art and decorative elements.
🚗 Automotive Industry – Custom car lighting and underglow.
🎭 Theatre & Film Industry – Nostalgic and Artistic Applications.
Conclusion
Neon lighting is a classic and iconic light source with a distinctive glow. While LED neon is now a popular alternative, true neon remains a timeless choice for eye-catching and stylish lighting.