1. Fixed lamps.

A luminaire that cannot be easily moved from one place to another, which can only be moved with the aid of a tool or used in hard-to-reach places. Fixed lamps include ceiling lamps, chandeliers, wall lamps, etc. Chandeliers are generally lamps suspended on the ceiling and are the most commonly used universal lighting, with direct, indirect, downward lighting and uniform astigmatism. The size of the chandelier and the number of lamp holders are related to the size of the room.

The chandelier is generally 500~1000 mm away from the ceiling, and the center of the light source is preferably 750 mm away from the ceiling. It can also be higher or lower according to specific needs. Ceiling light is a type of light that is directly mounted on the ceiling surface. There are several types of lamps such as downward projection lamps, astigmatism and comprehensive lighting. The light source includes incandescent ceiling lamps and fluorescent lamps ceiling lamps.

The disadvantage is that it is prone to glare. It is widely used because the floor height of the general residential building is relatively low.

However, the shape, layout and combination, structural form and materials used of the ceiling lamp should be considered according to the use requirements, ceiling structure and aesthetic requirements. The size of the lamps and lanterns should be adapted to the indoor space, and the structure must be safe and reliable. Wall sconces are lamps that are mounted on the wall. It is a light fixture for interior decoration and supplementary lighting. Because the distance from the ground is not high, low-power bulbs are generally used.

The height of the lamp itself is 450~800 mm for the large one and 275~450 mm for the small one. The diameter of the lampshade is Ф150~250 mm for large ones and 110~130 mm for small ones. The distance that the lamps jump over the wall is generally 95~400 mm. The light source power commonly used in wall lamps is 100-watt and 150-watt incandescent bulbs for large ones, and 40-watt and 60-watt incandescent bulbs for small ones. It is also possible to directly replace incandescent bulbs with compact fluorescent lamps.