1.LED lights

LED lights have the advantages of small size, low power consumption, long life, non-toxic and environmental protection. The disadvantage is that constant current drive is required, and the heat dissipation process is not easy and the light decays easily. The light effect is relatively low, and the color will be missing.

Luminous efficiency: 60 ～ 120lm / w; Service life: 30,000-550,000 hours; Market price: Relatively expensive.

LED light purchase: see solder joints, FPC quality, cleanliness, packaging, labels, accessories, etc.

2.Energy-saving lamps

The advantages of energy-saving lamps are small size, energy saving, and longer life than incandescent lamps. The disadvantage is that the color rendering index is low, which will cause serious discoloration when looking at things; it is fragile and adds mercury, which pollutes the environment, and the ballast generates a certain amount of electromagnetic radiation when it generates transient high pressure.

Luminous efficiency: 50 ～ 100lm / w; Service life: 8000 to 10000 hours; Market price: Cheap.

Purchase of energy-saving lamps: Select the certification mark of authority, look at the package, model, appearance, and interchangeable lamps.

3.Fluorescent lights

It is also called fluorescent lamp, which has the advantages of energy saving and more colors. The disadvantage is that the color is relatively poor, and harmful elements such as mercury are harmful to the environment. In addition, ultraviolet radiation and strobes can damage the eyes.

Luminous efficiency: 40 ~ 60lm / w; Lifetime: 3000 ~ 4000 hours; Market price: relatively cheap.

Fluorescent lamp purchase: see specifications, appearance coordination, lamp luminous color, labeling, instructions and so on.

4.Halogen lamps

Commonly known as lamp cups, cup lights, spotlights, halogen gas such as iodine or bromine is injected into the bulb. At high temperature, the sublimated tungsten wire chemically reacts with the halogen. The cooled tungsten will re-solidify on the tungsten wire to form a balanced cycle. Simple, low cost, easy to adjust and control brightness, and good color rendering. The disadvantages are short service life, low luminous efficiency, and the filament is prone to failure at high temperatures for a long time.

Luminous efficiency: 19 ~ 21lm / w; Lifetime: 3000 to 4000 hours; Price range: Medium.

5. Incandescent

It consists of tungsten wire, glass bulb and lamp cap. The advantage is that all lamps have the best color rendering, the closest to natural light, and the price is very cheap. The disadvantage is that the power consumption is large and the life is short. Most of the electricity is used for heating and the performance is low. Now it has basically been eliminated by the market.

Luminous efficiency: 10-15lm / w; Service life: Generally about 1000 hours; Market price: Very cheap.