There are generally four kinds of light sources for table lamps: incandescent lamps, halogen tungsten lamps, fluorescent lamps and LED. What are the advantages and disadvantages of these light sources used in desk lamps?
Escent lamp, also known as light tube) with high efficiency, close to 40%, the heat generated by the same brightness of the incandescent lamp is only 1/6. In many places, especially the air conditioning market, summer building will use fluorescent lighting to save electricity. Small fluorescent lamps (energy-saving light bulbs) and the fluorescent lamp start the electronic combination, using standard light bulb interface, to replace the ordinary incandescent bulbs.
A 26 watt energy-saving light bulb, a brightness of 11 watts, 15 watts of heat. The same brightness 11 watt incandescent lamp power is four times, up to 100 watts; heat up to 90 watts. Six times, a lot of Home Furnishing lights in is still a common incandescent lamp. The halogen bulb in recent years has become the more popular, especially the need to focus on the light source, such as Home Furnishing spotlights, car headlights, often use a halogen bulb. Good halogen bulb can reach 15% efficiency. For example, a 60 watt halogen lamp, the brightness can be equivalent to an ordinary 100 watt light bulb is a halogen bulb. But the small size of operation when the temperature is very high. In Home Furnishing applications need special protection, to prevent fires. As for outdoor street lighting with sodium lamp (Sodium vapor lamp) is the most common. Low pressure sodium lamp is issued by the dull orange light, but its efficiency is not Constant height is about fifteen times higher than that of ordinary light bulb. The color efficiency of high pressure sodium lamp is slightly lower, but the color is more abundant
