圆柱形灯罩用来安装标准80mm开孔的暗装筒射灯

三款，

1.长圆柱，前半部分圆柱用来装灯，后半部分装控制器。

2.短圆柱，前半部分圆柱用来装灯，后半部分装控制器。

3.圆锥，灯和控制器直接装在一起。

两部分咬合力是比较大的，一般来说不需要螺丝组合。

A cylindrical lampshade is used to install concealed cylindrical spotlights with standard 80mm openings
Three options,
1. Long cylinder, the front half of the cylinder is used to hold the lamp, and the back half is used to hold the controller.
2. Short cylinder, the first half of the cylinder is used to hold the lamp, and the second half is used to hold the controller.
3. The cone, lamp, and controller are directly installed together.
The bite force between the two parts is relatively large, and generally no screw combination is required.