FIELD: lighting.
SUBSTANCE: invention relates to lighting and can be used in lighting device (1), comprising exit window (2) and light source substrate (3) arranged to carry at least one solid-state light source (4) arranged to emit light through exit window (2). Exit window (2) is shaped to allow a front surface of light source substrate (3) to be brought into physical contact with a surface of the exit window facing light source substrate (3), thereby enabling thermal contact between light source substrate (3) and exit window (2).
EFFECT: technical result is improved heat transfer.
8 cl, 4 dwg
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