Protective jewelry display device

Abstract

A protective display device comprising a hollow transparent tube; an article for sale or display placed inside the tube; two covers respectively closing openings at both ends of the tube; a disposable blocking material closing and locking connecting portions between each end of the tubes and each of the two covers; at least one observation window passing through walls of the tube to facilitate measurement and observation of the article for sale or display.

I claim: 
     
         1 . A protective display device comprising a hollow transparent tube; an article for sale or display placed inside the tube; two covers respectively closing openings at both ends of the tube; a disposable blocking material closing and locking connecting portions between each end of the tubes and each of the two covers; at least one observation window passing through walls of the tube to facilitate measurement and observation of the article for sale or display. 
     
     
         2 . The device of  claim 1  wherein said disposable blocking material is a sealing wax or a lead seal. 
     
     
         3 . The device of  claim 1  wherein the tube is a flexible or rigid pipe. 
     
     
         4 . The device of  claim 1  wherein the tube is made of plastics or organic glasses. 
     
     
         5 . The device of  claim 1  wherein each of the two covers is integrally connected to each of the two ends of the hollow tube through a slot structure. 
     
     
         6 . The device of  claim 1  wherein the number of the observation windows is one to three. 
     
     
         7 . The device of  claim 1  wherein the observation window is of a circular, oval or elongated shape. 
     
     
         8 . The device of  claim 1  wherein the article for sale of display is a jewelry product. 
     
     
         9 . The device of  claim 8  wherein the jewelry product is made of pearls or gemstones.