| 摘要 |
PROBLEM TO BE SOLVED: To provide a lighting installation which may be made thinner in thickness in spite of use of cold cathode fluorescent tubes of the light installation in which signboards for advertisement, various kinds of films, etc., to be used for illumination are used and is long in life and is free of illumination unevenness which having high brightness. SOLUTION: This lighting installation is constituted to illuminate an object for illumination from its rear with the transmitted light from the cold cathode fluorescent tubes 2 having electrodes at each of both ends in the axial direction of the tubes by impressing high-frequency voltages from inverter circuits to the fluorescent tubes 2. A plurality of the fluorescent tubes 2 are disposed in nearly parallel to each other and circuit boards 14 formed with the inverter circuits are disposed at each one-side end of a plurality of the fluorescent tubes 2 or near the same and the high-frequency output side output terminals Vo of the inverter circuits are connected to the electrodes disposed to each one-side end of the fluorescent tubes 2. |
