吸(xi)(xi)(xi)頂燈(deng)能(neng)直(zhi)接吸(xi)(xi)(xi)附在(zai)(zai)天花板上(shang),光(guang)源(yuan)多以白(bai)熾燈(deng)為(wei)主,照(zhao)明(ming)方式(shi)一(yi)般為(wei)向(xiang)下(xia)投射(she)(she)、散(san)光(guang)、全(quan)面照(zhao)明(ming)等。選(xuan)(xuan)(xuan)(xuan)擇吸(xi)(xi)(xi)頂燈(deng)尺(chi)寸時,先要(yao)考慮(lv)吸(xi)(xi)(xi)頂燈(deng)用(yong)在(zai)(zai)什(shen)么范圍。如果(guo)(guo)用(yong)作客廳光(guang)源(yuan),要(yao)選(xuan)(xuan)(xuan)(xuan)擇散(san)光(guang)或者全(quan)面照(zhao)明(ming)型的(de);餐(can)廳多選(xuan)(xuan)(xuan)(xuan)擇向(xiang)下(xia)投射(she)(she)照(zhao)明(ming)方式(shi);臥室(shi)光(guang)源(yuan)需要(yao)柔和,可選(xuan)(xuan)(xuan)(xuan)用(yong)散(san)光(guang)照(zhao)明(ming)。其次(ci)要(yao)考慮(lv)照(zhao)明(ming)面積。舉例(li)來說(shuo),如果(guo)(guo)照(zhao)明(ming)面積在(zai)(zai)15平(ping)米(mi)左右,那么吸(xi)(xi)(xi)頂燈(deng)直(zhi)徑(jing)在(zai)(zai)40cm為(wei)佳(jia);如果(guo)(guo)照(zhao)明(ming)面積在(zai)(zai)20—35平(ping)米(mi),則(ze)吸(xi)(xi)(xi)頂燈(deng)選(xuan)(xuan)(xuan)(xuan)擇直(zhi)徑(jing)60—70cm比(bi)較(jiao)合適。更(geng)大的(de)空(kong)間可以選(xuan)(xuan)(xuan)(xuan)擇兩個吸(xi)(xi)(xi)頂燈(deng),采用(yong)雙照(zhao)明(ming)模(mo)式(shi)。