The present invention is a rotary billboard that can improve the advertising effect by attracting the attention of consumers and seeing the ad text in any position by rotating the billboard installed on the upper plate of the display case displaying products in the daily necessities store. It relates to a showcase provided with, the shelf 10 is installed on the upper plate (2) of the showcase (1) made to be suitable for displaying the product according to the life necessities to be released and emits light by the supply of electrical energy; An end shaft 20 which is fixed to the upper plate 2 and is cut in a vertical direction so that a sharp end thereof can be positioned at the center of the upper plate 10; The phrase or character symbolizing the product displayed on the display case 1 in the cylindrical shape of the lower side is printed on the side plate 31, the dimple groove 33 formed around the upper plate 32 is the end of the shaft 20. It is mounted on the lower end is spaced apart from the upper plate (2) of the showcase (1), the air discharge hole 34 through which the air heated by the heat exchanger 20 is discharged dimple groove (33) It is formed in a radial shape with respect to the center, the air discharge hole (34) by using a rotating billboard 30 made of a fan blade 35 to form a predetermined inclination angle can utilize the entire side plate of the billboard Efficient use of, of course, has the advantage of eliminating the crudeness of the ad text; As the billboard is rotated, it attracts the eyes of the consumers and at the same time, the text can be viewed at any position, thereby enhancing the advertising effect; It is very useful to increase the product value of the showcase.
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