The chimney is the arc screen board, upside inserts the fish hypogastric the aperture, lower part inserts in the lamp panel, may control rotates opens and closes, adjusts the luminosity willfully.

灯罩为弧形屏板，上部插入鱼腹下的开口，下部插入灯盘内，可左右转动开合，任意调节光度。