Display lighting arrangement having several LEDS

Adjacent light sources, or alternatively groups of sources which within each group illuminate the same part of the window with a light strength which is not less than e.g. 10 per cent of the max. The illuminated part of the window can be wholly or partly obstructed by material, the degree of transmi...

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Bibliographische Detailangaben
Hauptverfasser:	GUSTAV WESTERLUND, STIG LEOPOLD BERGLUND
Format:	Patent
Sprache:	eng ; swe
Schlagworte:	ADVERTISING BLASTING CRYPTOGRAPHY DISPLAY DISPLAYING EDUCATION FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMSTHEREOF HEATING LABELS OR NAME-PLATES LIGHTING MECHANICAL ENGINEERING PHYSICS SEALS SIGNS STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHERARTICLES, NOT OTHERWISE PROVIDED FOR WEAPONS
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Beschreibung
Zusammenfassung:	Adjacent light sources, or alternatively groups of sources which within each group illuminate the same part of the window with a light strength which is not less than e.g. 10 per cent of the max. The illuminated part of the window can be wholly or partly obstructed by material, the degree of transmission and colour permeability of which can vary over the window and possibly also in time. The light diffusion angle is between 5 to 120 degrees, and the light sources are uniformly inclinclinedat an angle which is between 0.05 and 0.2 times the angle of diffusion. The groups of light sources are of different colours, but which together produce a mainly white light. They are fed with a pulsating current, the pulse frequency being greater than approx. 200 Hz The window light diffusion in a horizontal direction is approx. 1.3 to 2 times greater than that vertically downwards.