The advantage of the present invention is that it can overcome the simplicity of the existing billboard, which is the advantage of being able to advertise 24 hours a day.;It is possible to use images after sunset, and in particular, it is possible to break out the promotion of one-sided products of the existing advertisement by inserting advertisements with public interest in a timely manner. Also, It has the advantage of attracting attention.;In addition, before the sunset, it is possible to advertise using a billboard that is installed between the screen protective glass and the screen, and it is a great advantage that the public interest advertisement and the promotion of products and companies can be performed simultaneously using the rotation principle.;In order to export to the screen, the existing image method is largely limited to the place, but in the outdoor image advertisement, a normal image can be seen by projecting the image of the image on the back side of the screen using a mirror. By using mirrors, the space is reduced by half.;It is much cheaper to install and maintain than existing outdoor advertising products (Panafrex, neon sign, billboard, etc.), and the number of times the advertisement is reached to consumers is much larger than TV advertisement. Consumers also prefer dynamic advertising rather than static advertising. In terms of advertisers, advertisers can advertise to consumers in a specific area, and the cost is much cheaper than other outdoor advertising.
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