Light sources on the street - it's lights, house lights, fountains, monuments, lighting near the shops, restaurants, parking lots, in landscape design. The light can be of different color and power.
The street lamps are often used discharge lamps. They are well suited for this purpose. Consider the types of lamps and more turn to other possible sources of light for the street.
Incandescent lamps
Incandescent lamps - an option that is being phased out, even in everyday life, not to mention the street lighting. There are a number of reasons.
Bulbs get very hot - most of the energy is released as heat. They spend a lot of electricity, it does not give light, bright enough for the street. The price is low, but they are not for long - an average of 1,000 hours.
discharge lamps
But this type of lamps for street lighting is perfect. This is the main area of their application.
Light is released from the electric discharge in a gaseous medium or a metal vapor. The gas enters the pressurized glass flask. Often used in street lighting lamps with inert gases: neon, argon, xenon and others.
There are many advantages of HID lamps.
Compared with incandescent lamps are long - up to 10,000 hours.
Withstand severe weather conditions, temperature extremes. Frosts are not afraid of.
High power and luminous efficiency is 10 times higher than incandescent lamps
Cons too.
To turn on, you need a trigger.
On heating lamp until it reaches operating brightness, it takes up to 5 minutes.
Light flickers.
Important! In the presence of mercury and metal vapor should be wary: to protect against damage, end of life disposed.
There are several types of gas discharge lamps.
mercury
The electrical discharge takes place in mercury vapor. There are low and high pressure. The second option is just used for street lighting. On average, the lamp is up to 4000 hours.
This type is characterized by low energy efficiency, the bulb heats up. Lamps are unsafe due to mercury vapor, modern light sources do not use this type.
sodium
The electrical discharge takes place in sodium vapor. Give light yellow, highly visible in foggy weather. Isolated high and low pressure lamps. High performance, are up to 30 000 hours. They are not the best color quality, use restrictions:
on the roads;
parking lots;
in warehouses, industrial facilities;
in the courts;
in parks, gardens.
Metal
Give a bright light of different shades of white. For outdoor lighting increasingly choosing cool. There are compact, which can be used in everyday life, and large, for street lighting. Metal halide lamps are used for lighting of buildings, in arenas and stadiums. Serve up to 10 000 hours. The lamps are made of quartz and ceramic technologies. The latter are more expensive: they last longer, a little brighter light.
induction lamps
They relate to the discharge electrodeless. The work is based on the principle of electromagnetic induction. The gas discharge occurs in the field of an electromagnet, eliminating the conductive electrodes. The glass flask is no cartridge and no metallic elements. Operate such lamps up to 150 000 hours. Characterized by high light output, while the little heated.
LED bulbs
Environmentally friendly, serve up to 80 000 hours, durable and bright. Save energy - this is their main advantage. But not always convenient to use in street lighting. By size, most of them are suitable for indoor installation. These lamps are not adapted to certain external conditions. So, they do not like high temperatures, require cooling systems.
In the online store "Island Light" you will find lamps, including colored bulbs of different shapes. Choose a model of large manufacturers for safe street lighting.
