| 摘要 |
An object of the present invention is to provide fluorescent lamps used as a light source for liquid crystal display devices, which have excellent characteristics in terms of preventing solarization, the properties for blocking ultraviolet rays, and the physical and thermal strength, and preventing scratching. The present invention provides fluorescent lamps made of glass containing 55.0% to 75.0% of SiO2; 10.0% to 25.0% of B2O3; 1.0% to 10.0% of Al2O3; 0% to 3.8% of Na2O; 0% to 3.0% of Li2O; 3.0% to 10.0% of K2O; 3.2% to 16.0% of Na2O+Li2O+K2O; 0.5% to 8% of TiO2; 0.1% to 5% of CeO2; 0.6% to 8.1% of TiO2+CeO2; 0.001% to 0.05% of Fe2O3; 0% to 0.7% of Sb2O3; 0.1% to 3.0% of SnO2; and 0.5% to 10.0% of at least one rare earth element selected from the group consisting of Gd, Y, La, Yb and Lu by weight, and is characterized in that the coefficient of linear expansion in a temperature range of 30° C. to 380° C. is 34x10-7/° C. to 58x10-7/° C.
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