LED bulbs are designed to replace incandescent spherical energy-saving products, such products currently on the market, mostly in less than 10 watts (1 watt to 10 watts specifications), to replace the bulb wattage at 60 watts and below .
The light efficiency of LED bulbs in the market are from 60-100 lm/W, CRI 60-90, 2700 -6500k color temperature, life 20,000-50,000 hours , all manufacturers of LED light indicators are not the same, for the species, many brands of LED lighting products, how do we choose the LED lamps do they need? General customers may not understand some of LED lamps expertise in order to make the average person to understand the performance of LED lamps, the following will make some brief.
1, LED bulb light efficiency is an integrated LED light-emitting efficiency finished it at the rated voltage, the LED lights emit a total luminous flux divided by the total power consumption of the LED light, that is, the values? Obtained LED lights integrated luminous efficiency, with lumens / watt that higher values? Indicate that the light energy better. The more power, you should select lumens / watt high LED lamps.
2, LED bulb color rendering index of 100 is generally considered :80-100, the color is good, 50-60 —- 79 CRI general, <50, the color is poor. Should be selected high CRI LED lamps.
3, LED bulb Color temperature is measured in Kelvin (K), the red light source color temperature of about 800 — 900K, yellow-white color temperature of about 3000K or so, about a white light source color temperature of about 5500K, the color temperature of the light source in a light blue 8000 — 12000K. Color temperature selection according to individual preferences, some people like to warm, then the color temperature of about 3000K lights on for him, like daylight people 5000K — 6500K color temperature of light can meet his requirements. Like the cool colors of the election 8000 — 12000K LED lights
4, LED bulb lamp life refers to the new light emitted luminous flux of 100%, after a period of use, the light-emitting efficiency to drop down to the moment when 70% of the initial luminous flux, that is, the lamp life hours number, select the number of hours lamp life course, the longer the better.
5, LED bulb temperature, generally permit 25 ℃ — 30 ℃, specific to the LED light heat sink temperature: ambient temperature plus temperature rise is permitted on the heat sink temperature. When the ambient temperature is 37 ℃, LED lamp heat sink temperature of 37 +30 = 67 ℃, if you exceed this temperature, the temperature rise permitted this lamp is substandard. LED lamp operating temperature is the enemy, of course, the smaller the better heating, indicating a high luminous efficiency of LED lights, LED lights in the selection of the same lamp power can be lit simultaneously for comparison. The other is the LED light heat sink temperature warming faster Description LED light thermal conductivity, high efficiency, low thermal resistance.
6, in addition to the above indicators, selected LED bulb should be selected on the eyes no glare, soft lighting some, that the eye will not feel uncomfortable to see the light, it is best to have its milky lampshade LED lights emit light softer.
7, LED lamps in use switching power supply will not have any impact on the lights, switch lights will not affect the number of life, which is the biggest difference with the fluorescent lamps.