Patent ID: 7441928
Filing Date: 2008-10-28
Classification: F21S,F21Y

Abstract:
1. A lighting device having a first side and a second side comprising: at least one LED light source having at least one LED chip and an optical axis, the LED light source configured to impart a certain directivity to light emitted in a forward direction from the LED chip in a direction of the optical axis; a first reflector disposed in front of the LED light source and upwards with respect to the optical axis when viewed from a front of the device, the first reflector extending forward and above the optical axis in an inclined manner from the first side to a second side so as to reflect part of light emitted from an upper part of the LED light source with respect to the optical axis; a second reflector disposed substantially in parallel with, and below, the first reflector, the second reflector configured to reflect light received from the first reflector; a third reflector disposed in front of the LED light source and downwards with respect to the optical axis when viewed from a front of the device, the third reflector extending forward and below the optical axis in an inclined manner from the second side to the first side so as to reflect at least a portion of light emitted from a lower part of the LED light source with respect to the optical axis; and a fourth reflector disposed substantially in parallel with, and above, the third reflector, the fourth reflector configured to reflect light received from the third reflector.