Muaj ob hom kev tshaj tawm ob tog: ob-sided hanging advertising machines thiab ob-sided ntsug advertising tshuab.
Nws yog ib qho kev tshaj tawm neeg uas ua ntawv uas tau siv rau sab hauv tsev thiab ntsib ob sab hauv tsev thiab sab nraum zoov. Yog li ntawd, qhov ci ntawm ob lub vijtsam txawv.
Vim tias lub vijtsam sab nraud yog rau cov zaub sab nraud, nws xav tau qhov ci siab dua: 800cd / m2.
cd / m2 yog chav tsev ntawm luminous siv, yog ib qho ntawm 7 qhov yooj yim units ntawm International System of Units (SI). Abbreviated li "kan", cim cd.
Sab hauv brightness: 400cd / m2
Lub tshuab tshaj tawm ob sab ntsug yog tsim los siv sab hauv tsev yam tsis muaj kev cuam tshuam los ntawm lwm qhov chaw teeb pom kev zoo, yog li qhov ci ntawm nws lub vijtsam ob sab yog feem ntau zoo ib yam, sib sau ua ke ntawm 400cd / m2.
