Inflatable article with an illuminating device

An inflatable article comprising:

• a gas-tight hollow body having a rounded wall which encloses a first space;
• an illuminating device mounted inside said hollow body and occupying a portion of said first space, said illuminating device including containing means which has a base bonded sealingly and integrally to said rounded wall and which confines a second space hermetically sealed from a remaining portion of said first space, said base having at least a part exposed from said rounded wall and an opening formed in said part for access to said second space, said containing means further including a primary mounting seat which is formed integrally with said base and which has an inner wall that defines a cavity therethrough in communication with said opening and an annular groove formed in said inner wall, said containing means further including a tubular secondary mounting seat disposed in said cavity and having an annular outward flange press-fitted into said annular groove of said primary mounting seat so as to form a first gas-tight seal between said primary and secondary mounting seats, wherein
• said illuminating device further has electric circuit means which is received in said second space and which includes:
• a light emitting element disposed interiorly of said opening and formed with a first electric terminal and a second electric terminal;
• a power source disposed between said opening and said light emitting element and having a negative electrode proximate to said opening and a positive electrode in electrical contact with said first electric terminal of said light emitting element;
• and a conductive member extending axially and outwardly of said power source and having a lower end connected to said second electric terminal of said light emitting element and an upper end disposed to be more proximate to said opening than said negative electrode;
• a conductive cap closing said opening and movable axially relative to said primary mounting seat between a conducting position and a non-conducting position;
• and
• a conductive biasing member disposed between said cap and said negative electrode such that, when said conductive cap is in said conducting position, said cap engages said upper end of said conductive member against biasing action of said biasing member, and when said cap is in said non-conducting position, said cap is spaced apart from said upper end of said conductive member so as to deactivate said light emitting element.