The utility model relates to a photocatalyst mosquito catching lamp device, which comprises: a box body, which is a plate body around which a holding space is formed, the upper and lower ends of which are respectively provided with an upper cover plate, forming an upper cover of the air inflow hole and a movable lower cover which is combined with the lower opening and has the lower air outflow hole； a photocatalyst, which is coated on the box body； a fan, which is arranged on the upper part of the box body； at least one luminous body A filter screen is arranged on the movable lower cover.The upper cover is provided with at least one hook hole； further, the box body is provided with at least one bending part with slots on both sides corresponding to the air inflow hole.With this structure, the box body can be coated with photocatalyst and the fan and filter screen can be arranged on the box body. The luminescent body is arranged on the upper end of the fan. The luminescent body irradiates the photocatalyst to attract mosquitoes. The fan sucks the mosquitoes into the filter screen arranged on the box body.一種光觸媒捕蚊燈裝置，包括︰一盒體，係為一圍繞形成具有一容置空間之板體，其上、下端分別設有上蓋板並形成多數空氣流入孔之一上蓋及蓋合於所形成下開口之具有下空氣流出孔之一活動下蓋；一光觸媒，塗佈於盒體；一風扇，設於盒體上段；至少一發光體，係設於風扇上端並對應塗佈於盒體之光觸媒；一濾網，設於活動下蓋。又上蓋設有至少一卡勾孔；更進一步，盒體對應空氣流入孔設有兩側具有縫槽之至少一彎折部。藉此結構，能提供自己動手做並將盒體塗佈光觸媒及將風扇、濾網設於盒體，發光體設於風扇上端，發光體照射光觸媒吸引蚊蟲，風扇將蚊蟲吸入盒體所設濾網。
