d92cb313_u__Seoul___Patent_applications__Description
[Patent application number] 20150022999 [Published] 01-22-2015 [Description] 
LIGHTING DEVICE AND METHOD FOR MANUFACTURING THE SAME - A lighting device in which a heat sink and a cover are formed by co-extrusion and a manufacturing method for the same are provided. The heat sink and the cover may be co-extruded. A shape control portion may be formed at the heat sink to control a shape of a seating portion to seat a circuit substrate during extrusion of the heat sink. In addition, a light characteristic control portion may be provided between a light emitting diode (LED) and the cover to control characteristic of light generated from the LED.
Yu, Seoul - Patent applications