PURPOSE: To improve the transmission function of a display in a specific place by enabling the display on a display body to be recognized from a constant area through holes of a honeycomb structure.

CONSTITUTION: The honeycomb structure 4 has many partition walls formed in the thickness direction of a support plate 3 and many parallel through holes are formed of the partition walls. Further, an annular illumination lamp 5 is fitted to a support plate groove 3b and the display board 6 is further fitted on the rear side. Therefore, the display on the display board 6 can be recognized only from the specific area with light transmitted in one direction from the transparent surface of the honeycomb structure through the through holes. Consequently, when a person enters the area from outside, characters, symbols, etc., on the display body which can not be recognized so far can be seen with the eyes and the display recognizing function is increased at the point of time.