| 摘要 |
PURPOSE:To prevent uneven brightness from being generated during lighting by fitting a phosphor film molded previously in a sheet form to the inner surface of a glass bulb. CONSTITUTION:A fluorescent lamp is formed by first molding a phosphor film 7 in a sheet form with even thicknesses, then working the phosphor film 7 in a roll shape in accordance with the inner diameter of the glass bulb 1 of a required lamp, inserting the phosphor film in the glass bulb 1, and sticking it to the inner surface of the glass bulb 1. The phosphor film 7 is molded by the three-layer structure method in which a phosphor 8 is sandwiched using transparent thin films 9 and 10 such as silicate oxide or the sheet forming method in which the phosphor is fixed using binder such as polyethylene oxide. |
