FIELD: background projection device. SUBSTANCE: the light source for use in a liquid crystal background projection device used as a projection device may be extracted on the side of the front part. The liquid crystal background projection device used as a projection device has an adjusting device for the light source located in the front part for installation of the lamp casing in it, containing a lamp as a light source. The lamp casing made in the form of a socket is installed in the light source adjusting device. A means with indication of the procedure of replacement of the lamp casing is provided on the front part of the lamp casing. EFFECT: enhanced efficiency of the device. 25 cl, 6 dwg
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