Analysis of the parameters of the LED bulb and the guide of the purchase guide

Introduction: LED lamp is widely used, we need to pay attention to the use of LED lighting in the process of what? For consumers, how to choose suitable lighting? This article will introduce one by one.

A general judgment of the six parameters of LED:

1, luminous flux (PHI) unit is lumen (LM)

Note: the luminous flux is determined directly by the chip brand, and all of our bulbs are supplied by the Taiwan chip light macro brand.

2, the color temperature (k) unit is Kelvin

3, color rendering (RA) color rendering index

4 and the light efficiency (LM / W)

5, power factor

6, cooling effect

Need to comply with the six parameters of the lamp, the basic is to determine the quality of a lamp!

Two, power selection

LED bulb, professionally known as LED bulb bulb, it is the most common household power for 3W, 5W, 7W, 9W, works with 12W, 18W, 21W, 24W, and even greater power, 40W, 80W, 120W, 150W, etc..

3W lighting is generally used in the above table lamp, bedside lamp.

5W bulbs are usually used on the floor lamp.

7W light bulb is usually a garage, nanny room, etc..

Personal suggestions: like the living room of the large chandelier, usually with 3W majority, because it may be used on a light bulb 6-30, the number of light source determines his brightness. Like the top of the table lamp, it is recommended to choose a larger power bulb, according to my understanding of Taobao, many vendors have power in the presence of false W number.

Three, the choice of lamp holder

A lamp holder bayonet and screw etc., commonly used are E27, E14, E26 lamp, which belongs to screw socket, the letter E said Edison threaded screw socket or cap, integer numbers represent behind the socket external diameter, unit is mm. So E27 said outside diameter screw cap 27mm, E14 outside diameter screw cap 14mm, Never mind LED lamp power and the lamp size, the same power LED lamp can use E27 lamp holder, the lamp can also be used E14, where E27 is the most commonly used head lamp.

There are B22 lamp, B22 lamp holder is a kind of lamp, the lamp cap is connected to the end of the wire, for the installation of light bulbs with the interface, is to fix the lamp on the lamp holder, so that the lamp and the power of the components connected to the lamp.

Electric light source mainly uses lamp holder, lamp holder naming method. Related symbols: B bayonet base, B behind the digital representation of shell diameter, such as: B22D/25 * 26-- with a two contact piece, a diameter of about 22mm bayonet; a total length of about 25mm, the skirt diameter is about 26mm.