Patent ID: 9016890
Filing Date: 2015-04-28
Classification: F21K,F21V,F21Y,Y10T

Abstract:
1. An optical semiconductor-based lighting apparatus comprising: an elongated light-transmitting tube having a hollow circular cross-section; and a plurality of optical semiconductor modules arranged along a circumference of the light-transmitting tube and separated from each other in a cross-sectional view of the light-transmitting tube, each of the optical semiconductor modules being placed on a point, which is not on a central axis line of light emitted from other optical semiconductor modules, so as not to face the other optical semiconductor modules, the plurality of optical semiconductor modules comprising a first optical semiconductor module placed at an upper portion of a cross-sectional view of the light-transmitting tube, such that an angle defined between a tangential line to the light-transmitting tube and the central axis line of light becomes 90 degrees, and emitting light downwards beneath the light-transmitting tube, and second and third optical semiconductor modules slantly placed at opposite lower sides of the light-transmitting tube so as not to face the first optical semiconductor module and emitting light upwards, wherein the light-transmitting tube comprises at least three slit pieces separated from one another, and each of the optical semiconductor modules is assembled to a mounting gap between adjacent slit pieces, wherein each of the optical semiconductor modules comprises a base exposed through the mounting gap, a PCB coupled to the base and placed within the light-transmitting tube, and an array of semiconductor optical devices mounted on the PCB, and wherein the base is formed at opposite sides thereof with connection grooves corresponding to edges of each of the slit pieces such that the edges of each of the slit pieces are respectively fitted into the connection grooves.