CATHODE-RAY FLUORESCENT LAMP Russian patent published in 2005 - IPC

FIELD: lighting engineering; lighting devices and components of color, monochromatic, dynamic, and static video displays, data display panels.

SUBSTANCE: novelty is that device incorporating fluorescent anode disposed in evacuated bulb and provided with high-voltage bushing, modulator with diaphragm and lead, as well as cathode and modulator fastening and aligning members has its fastening and aligning members made of or covered with conducting material except for insulating regions of minimal size sufficient to eliminate electrical breakdown at operating voltages across anode, modulator, and cathode; conducting regions of these members are electrically connected to modulator and cathode leads or to separate leads. Cathode can be made of bundle of carbon fibers with fibrils at ends, 250 to 1000 Å in length, 20 to 59 Å in diameter, placed in conducting sheath electrically connected to cathode lead, or in insulating sheath covered with conducting material throughout bundle length except for electron-emitting fiber bundle end. Fastening and aligning members may be provided with at least one aligning washer; contact assembly of cathode can be made of conducting material applied to end of carbon fiber bundle opposing electron-emitting end and metal ring rigidly coupled with aligning washer by means of conducting supports.

EFFECT: enhanced stability and service life of fluorescent lamps.

3 cl, 2 dwg