Material of downlight
1. The maximum size of household downlights should not exceed 2.5 inches, and a 5W energy-saving lamp is sufficient.
2. LED downlight are a recent addition and can be used as a substitute for ordinary downlight. The light is better than ordinary ones, but the disadvantage of one is that if one or two light points are damaged, they cannot be replaced.
3. There are also many types of materials for cylinder lamp covers, such as iron surface, pure aluminum, die-casting, etc. Generally speaking, iron surface cylinder lamps
The price is cheap, pure aluminum and die-casting materials are relatively expensive, but they are more durable. Iron faced cylinders are commonly used in engineering
Lamp, but it is recommended to use a non rusting cover for the tube lamp in home decoration.
The tube lamp head is an important component, and the main material of the lamp head is ceramic. The spring inside is the most important
Yes, there are two types: copper sheet and aluminum sheet. Good brands use aluminum sheet and install springs under the contact points
To enhance contact. Another thing is the power cord for the lamp head. A good brand uses a three wire wiring lamp head (three wire is the live wire),
Some brands may come with wiring terminals, which is also a basic way to distinguish between good brands and ordinary brands
The method.
Reflective cups are generally made of two types: sand cups and light cups. The material is aluminum, which will not change color and has better reflectivity.
Some small manufacturers use plastic spraying to make it. This new process looks good, but after a period of time, it will become darker and even worse
Until it turns black. The identification method is to check the neatness of the cut. Aluminum is cut neatly, while spraying is the opposite.
