LED-BASED LIGHTING FIXTURE PURPOSED FOR SURFACE ILLUMINATION WITH IMPROVED HEAT DISSIPATION AND FABRICABILITY Russian patent published in 2013 - IPC F21S4/00 

FIELD: electricity.

SUBSTANCE: LED-based lighting fixture (100) represents a unit made of a number of light-emitting diodes (LED) connected thermally to a heat sink (120), which forms a part of a body (105). The primary optical element (170) placed inside of a pressure-imparting element (174) is located higher and compensated optically with each LED (168). The combined secondary optical element (130) that forms the other part of the body is located higher and is connected to other pressure-imparting element (174) by means of compression. The force applied to the second optical element (130) is transferred through pressure-imparting elements so that it presses LED element to heat sink (120) thus facilitating heat transmission. LED unit can be fixed in the body without use of adhesive. The secondary optical element can be installed so that it does not apply direct force to any primary optical element thus decreasing any optical deviation. Assembly method is specified when mechanical and/or thermal attachment of respective components is attained by means of force transfer from one component to another.

EFFECT: improvement of lighting efficiency and fabricability.

27 cl, 3 tbl, 19 dwg