1,246,309. Electroluminescence. M. PANERAI, and G. PANERAI. 9 Dec., 1968 [7 Dec., 1967; 28 Feb., 1968; 6 March, 1968; 11 July, 1968; 16 Oct., 1968], No. 58488/68. Heading C4S. [Also in Division G5] A display device comprises a plurality of light transmitting rods 6 extending through a pack of light-transmitting plates 1, an electroluminescent light source 17 supplying light via the plates and means 7 for directing said light along a selection of the rods to provide a visible character. The light is directed by notches in the rods and each plate provides a separate character. The rods may be of circular, triangular, quadrangular or polygonal crosssection and the light may be directed by a length of rod of decreased cross-section obtained by hot stretching. Alternatively, each rod can comprise a plurality of coaxial lengths each having one end bent towards a light source (Fig. 20, not shown).
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