The invention discloses an underwater sightseeing submersible. The underwater sightseeing submersible comprises an L-shaped vehicle body and a diving helmet, a circular groove is formed in the upper end of the left side of the vehicle body, an oxygen tank is inserted into the circular groove in a sealed mode, a square groove communicating with the circular groove is formed in the lower end of thecircular groove, a mounting base is arranged in the square groove, first springs are jointly and fixedly connected between the mounting base and the inner bottom wall of the square groove, movable grooves are formed in the inner walls of the two sides of the square groove, rotating rods are rotatably connected to the front inner walls and the rear inner walls of the movable grooves, limiting strips are fixedly connected to the two sides of the front face and the two sides of the rear face of the mounting base up and down at intervals, and a sliding rod is rotationally and slidably connected between every two limiting strips which are arranged up and down. The underwater sightseeing submersible has the advantages that good diving playing experience can be provided for tourists through the submersible, the oxygen tank on the submersible can be rapidly replaced, the replacement time is shortened, when oxygen and power of the submersible are insufficient, a warning lamp located on the seasurface flashes so that workers can conveniently come into notice, and the safety of the submersible is improved.

本发明公开了一种水下观光潜水器，包括呈L形的车体和潜水头盔，所述车体左侧上端开设有圆槽，所述圆槽内密封插设有氧气罐，所述圆槽下端开设有与之连通的方形槽，所述方形槽内设有安装座，所述安装座与方形槽内底壁之间共同固定连接有第一弹簧，所述方形槽两侧内壁上均开设有活动槽，所述活动槽的前后内壁共同转动连接有转动杆，所述安装座前后两面的两侧均上下间隔固定连接有限位条，两个上下设置的所述限位条之间转动并滑动连接有滑杆。优点在于：通过本潜水器可为游客提供良好的下潜游玩体验，可快速的更换潜水器上的氧气罐，减少了更换时间，当潜水器的氧气和动力不足时位于海面的警示灯闪亮，方便工作人员注意，提高潜水器的安全性。