How to choose the right LED lighting?

Hits:Updated:2017-02-22 14:02:37【Print】

First, roughly determine the good and bad LED parameters of the six:
1, luminous flux (Φ) unit is lumen (lm)
Note: luminous flux directly from the chip brand decision, our light bulbs are all provided by the Taiwan chip Guanghong brand.
2, color temperature (k) unit is Kelvin
3, color (ra) color rendering index
4, light source efficiency (lm / w)
5, the power of the power factor
6, cooling effect
Need to meet the six parameters of the lights, the basic can determine a good or bad lamp!
Second, the power of choice
LED bulbs, professional known as LED bulb, it is the most common home power of 3W, 5W, 7W, 9W, the project with 12W, 18W, 21W, 24W, or even greater power, 40W, 80W, 120W , 150W and so on.
3W bulbs are generally used in the table lamp, bedside lamp above.
5W bulbs are generally used in the floor lamp above.
7W bulbs are generally garage, nanny room and so on.
Personal construction: like the living room in the big chandelier, generally with 3W majority, because it is a lamp above may use 6-30 bulbs, the number of light source determines his brightness. Like the table lamp \ floor lamp above, Larger bulb, as far as I know Taobao, many vendors have the power to have false W number of existence.
Third, the lamp selection
There are E27, E14, E26 and so on. These are all screwdriver lampholders, the letter E stands for Eddie thread's spiral lampholder or lamp, and the number on the back represents the outside of the lampholder. The integer value in mm, in mm.
So E27 said outside diameter of 27mm screw cap, E14 said outside diameter of 14mm screw cap, LED lamp power and lamp size does not matter, the same power LED bulbs can be used E27 lamp, can also be used E14 lamp, which E27 is the most commonly used lamp.
There B22 lamp holder, B22 lamp is a kind of lamp, the lamp is connected to the end of the light line, for the installation of the lamp with the interface, is the lamp fixed to the lamp holder, so that lights and power connected to the lamp parts.
Electric light source mainly uses lamp holder, lamp holder naming method. The meaning of the relevant symbols: B bayonet lamp, B after the figures that the diameter of the shell, such as: B22D / 25 × 26 - refers to a two-contact, diameter of about 22mm bayonet lamp; total length of about 25mm, Skirt diameter of about 26mm.