Moistureproof decorative bulb for christmas decorations

A decorative bulb having:

• a bulb casing whose lower end is a male-threaded end;
• a bulblet with a filament therein;
• a hollow bulblet socket having a hollow middle interior and two through holes in a lower interior of said bulblet socket;
• a flexible rod disposed on an upper outer periphery of said bulblet socket;
• a casing socket having an outer sleeve which has a lower protruded end and upper inner female threads and an inner sleeve which has a snap fastener disposed on an upper outer periphery of said inner sleeve;
• a lower end of said inner sleeve connected and disposed in said outer sleeve;
• said bulblet socket being inserted into said inner sleeve;
• an upper portion of said bulblet being inserted in said bulb casing;
• a lower portion of said bulblet being inserted in said bulblet socket;
• a central hole formed in a central portion of said inner sleeve;
• two ends of said filament being bent outside said bulblet socket via said through holes respectively to contact a corresponding copper cathode and copper anode which are connected to two corresponding wires respectively;
• a cover with a central protruded post and two recess holes;
• said wires being drawn out from said inner sleeve to said recess holes respectively;
• said female threads engaging with said male-threaded end tightly to position said male-threaded end between said inner sleeve and said outer sleeve;
• said protruded end of said outer sleeve being inserted into said cover;
• said inner sleeve having a separator which is disposed in an inner lower portion of said inner sleeve;
• and
• said inner sleeve higher than said outer sleeve at a predetermined height.