The present invention relates to a three-dimensional decorative writing instrument, and more particularly, by forming a lenticular screen on which the various pictures, photographs, advertisement contents, etc. are printed and displayed on the outer surface of the writing instrument, the novel and more excellent decorativeness by the three-dimensional aesthetic effect of the lenticular plate. It relates to a writing instrument to have.;The present invention is made of a flat portion (5) for attaching the lenticular plate to a part of the body (1) of the writing instrument, and the flat portion (5) by making a lenticular plate in which various pictures, photographs, characters, etc. are printed and displayed in three dimensions It consists of a three-dimensional decorative plate (4) coupled to.;The present invention can provide a writing instrument that enhances the added value as a promotional product and a product with a more aesthetic effect and a novel decoration by the three-dimensional visual effect in the design of the writing instrument to satisfy the various purchase desires of consumers.;Writing instruments combined with three-dimensional writing instruments, writing instruments, three-dimensional writing instruments, ballpoint pens, decorative pens, three-dimensional decoration
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