The spherical LED lamp is designed to replace incandescent lamps energy-saving products, currently on the market such products mostly at 10 watts ( 1 watts to 10 watts or less between the specifications ), can replace the bulb wattage of 60 watts at and below.
The market sale of the LED lights integrated optical effects in 80---100 lumens / watt, color index between 70---90, temperature 2700---6500k, life 20000 - - - 50000 hours, various manufacturers of LED light indicators is not the same, for variety, many brands of LED lamp products, how to choose their own needs LED lamps? The customer may not understand LED lamps for some professional knowledge, in order to enable people understand the LED lamps performance index, following some simple introduction.
In 1, LED lamp integrated light effect refers to a finished LED light emitting efficiency, it is under the rated voltage, the LED lamp of total luminous flux is divided by the total power consumption of LED lamps, the numerical value is the LED lamp integrated luminous efficiency, with lumens / watt said, the higher the value the lamp energy saving effect is better. Also more power, should choose the lumens / Watt High LED lamps.
2, color index is 100, is generally believed that: 80-100, 50----79, good color, color and general, < 50, the color of the poor. Should high color-rendering index LED lamps.
In 3, the color temperature of the unit for Kelvin ( K ), Led cabinet light red light source color temperature of approximately 800---900K, yellow-white color temperature of the light source is about 3000K, a white light source color temperature is about 5500K, blue light source color temperature in 8000---12000K. The color temperature of the light source selection according to the preferences of each, some people like the warm tone, then around 3000K color lamp for him, like the daylight color 5000K---6500K color lamp can meet his requirements. Like cold colors, choose 8000---12000K LED lamp
In 4, LED lamp life refers to the new light emitted by the luminous flux as 100, after a period of use, the lamp luminous efficiency to drop, when falling to the initial luminous flux 70, namely the life-span of the lamp hours, selection of lamps of course hours longer and better life.
5, you LED temperature rise, the general permit 25 degrees - 30 degrees C, specific to the LED lamp radiator temperature: temperature plus licensing temperature rise is the heat sink temperature. When the environment temperature is 37 DEG C, LED lamp radiator temperature 37+30 = 67 C, if more than this temperature, the temperature rise is this lamp license is not qualified. Temperature is LED lights work of the enemy, and of course the heating as small as possible, LED lamp with high luminous efficiency, in the selection of LED lamp can be used for the same power to the lamps are lighted at the same time to compare. Another is the LED lamp radiator temperature warming faster LED lamp with high heat conduction efficiency, small thermal resistance.
As one of the conditions, but also can be used to measure LED illuminance illuminance meter, choose a high, all LED lights in this highly test, LED lights just lit when the measured illumination, 30 minutes or 60 minutes after the test-retest illumination, illumination invariant or changes in the small lamp is better, change big description of the heat lamp is not good, large heat resistance, temperature increase of the chip, the luminous efficiency resulted in decreased intensity becomes smaller, the lamp can be used.
In 6, LED tube replacement fluorescent lamp to note, the current domestic production of LED lamp are without heat sink, the LED lamp radiation condition is not good, ordinary 30 watt fluorescent lamp length LED lamp power of only 17 digging around, light emitting element is to use a small straw hat LED assembled in long PCB the printed circuit board, through the electronic seal glue fixed in the transparent plastic tube. The author thinks the LED lamp¡¯s life may not meet the specified life hours, preferably with radiator LED lamp, using up more reliable, has been abroad with aluminum radiator LED tube product. Believe that China will develop this radiator LED lamp, meet the needs of various users.
In addition to the above indexes, LED lamp should be selected for the eyes no glare, soft lighting some of that light, eyes will not feel uncomfortable, it is better to have milky white shade LED lamp which emits light softer. LED Cup Light
In 7, LED lights in the use of switching power supply of light caused any effect, switch lamp frequency does not affect the life, this is the biggest difference with the fluorescent lamp, LED lamp is an advantage.
