This creation is a kind of related aquarium illumination device of what, and owner wants to be installed with illuminating module in the accommodating space of one lamp holder of what, and what lamp holder at least side is equipped with opening, and the what opening group is equipped with capping. Thereby, when the damage of its illuminating module of lighting device, user can open lamp base part side sealing cover, make its opening open, illuminating module is open outside extraction what by lamp holder again, with convenience, to damage, alternatively illuminating module is replaced, according to this, whole group lighting device need not be renewed, reach saving maintenance cost and avoid the benefits such as the improper waste of material resource.本創作係有關於一種水族箱照明裝置，係主要於一燈座之容置空間內容設發光模組，且於燈座至少一側設有開口，並於該開口組設有封蓋。藉此，當照明裝置其發光模組損壞時，使用者便可打開燈座側邊封蓋，使其開口敞開，再將發光模組由燈座開口抽出於外，以便利對損換之發光模組進行更換，依此，即無須將整組照明裝置換新，達到節省維修成本及避免物料資源不當浪費等效益。
