One-and-a-half-hour one-year electricity fee three five

A few days ago, a TV station's lighting division said that there are now many kinds of LED lights on the market that are more energy-efficient than energy-saving lamps. He is planning to replace the mother's downlight with an LED spotlight.

"Even if the LED lights are on for 24 hours, they will only need to pay for electricity for a month, so that the elderly will be safer at night."

In addition, in the next five years, Hangzhou LED output value can reach 20 billion yuan, has been listed as one of the ten strategic emerging industries in Hangzhou.

What is this LED light in the end? Really power-saving? Is it cost-effective to replace energy-saving lamps with LED lights?

Turn on the light for 10 hours a day

LED lamp can use 13 years

The full name of the LED is Light Emitting Diode, a semiconductor light-emitting diode that can directly convert electrical energy into visible light, which is more efficient than energy-saving lamps. Therefore, it is more energy-efficient and environmentally friendly.

The LDE lamp had been in existence since the 1960s. The earliest red light came out, and later it had a green light. It was mainly used in dashboards and decorations. Now widely used in mobile phones, computers and cars.

"At the beginning of the 90's, foreign countries developed high-brightness LED blue light, so that LED has been able to mix with other colors of the three primary colors - red, green, blue, into the home lighting becomes possible." Huang Jingyun, professor of materials from Zhejiang University said.

Brightness, 1 watt LED lamp brightness equivalent to 2 watts of energy-saving lamps, and 90% of the electrical energy into visible light, less heat;

Compared to energy-saving, 5-watt LED lamp consumes 5 hours in 1000 hours, and the lighting brightness is equal, 10-watt energy-saving lamp consumes 10 hours in 1000 hours;

Compared with the life span, the service life of the energy-saving lamp is 8000 hours. The LED lamp can reach 50,000 hours - equivalent to 10 hours a day. It can be used for 13 years. The LED lamp has no filament and you do not need to worry about breaking the bulb.

Compared with environmental protection, ordinary lamps, including energy-saving lamps, contain mercury. The mercury contained in dozens of bulbs can contaminate the entire West Lake, and LED lamps do not.

More than health, energy-saving lamps emit ultraviolet and infrared rays when they are glowing, and LED lamps do not radiate.