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Summary:The invention discloses a propaganda device which comprises a propaganda column, a hollow stand column used for supporting the propaganda column and a heat conduction copper rod used for conducting heat to the underground. The propaganda column comprises a lamp box, propaganda canvas which is arranged in front of the lamp box and printed with propaganda content, a light source assembly which is arranged in the lamp box and is used for illuminating the propaganda canvas, and a rechargeable storage battery for supplying power to the light source assembly; the lamp box is supported by the hollow stand column. The heat-conducting copper rod penetrates through the hollow upright post, the upper end of the heat-conducting copper rod extends into the lamp box, and the lower end of the heat-conducting copper rod extends out of the lower end of the hollow upright post and is buried underground. The lamp box has the advantages that the heat conduction copper rod is arranged for heat conduction and heat dissipation, hea
Bibliography:Application Number: CN202311704738