Improved structure of carbon dioxide generator is disclosed, which provides a better efficacy in use for mosquito catching. The disclosed provides a machine body having an upper cover installed with a light source, a carbon dioxide generator installed inside, a heater and a fan. The carbon dioxide generator has a carrying disc and a covering body, wherein the carrying disc is arranged with yeast fermentation broth while photocatalyst is coated at the inner edge of side plate of the machine body. Accordingly, the disclosed structure is able to kill mosquitoes effectively by attracting mosquitoes through carbon dioxide generated by fermentation of the yeast fermentation broth in the carrying disc and light emitted photocatalyst and then distributed by the fan, the attracted mosquitoes are inhaled through the inhaled current generated by the fan, and the heater will evaporate the mosquitoes and gradually dry out the water inside them.本發明係一種二氧化碳產生器之結構改良,乃使捕蚊裝置得更佳之實用功效。主要係機體具有上蓋,上蓋設有光源,機體內設有二氧化碳產生器、加熱器及風扇,該二氧化碳產生器具有承載盤及蓋體,其中該承載盤設有酵母菌發酵液,該機體之側板內緣塗佈有光觸媒,透過上述結構,承載盤內之酵母菌發酵液發酵及光源照射光觸媒產生二氧化碳並由風扇排出吸引蚊蟲,而風扇產生之吸入氣流將蚊蟲吸入機體,而加熱器將蚊蟲體內水分蒸發逐漸風乾,而得抑制蚊蟲之實用功效。「本發明」100‧‧‧二氧化碳產生器之結構改良10‧‧‧上蓋11‧‧‧光源20‧‧‧機體21‧‧‧漸縮部22‧‧‧側板30‧‧‧二氧化碳產生器31‧‧‧蓋體32‧‧‧承載盤33‧‧‧把手40‧‧‧加熱器50‧‧‧抽取盒60‧‧‧風扇
