LIGHTING METHOD FOR AN LED LIGHTING APPARATUS

• US 20140218922A1
• Filed: 04/04/2014
• Published: 08/07/2014
• Est. Priority Date: 10/05/2011
• Status: Abandoned Application

• Current Assignee: KMW Incorporated
• Original Assignee: KMW Incorporated
• Inventors: Kim, Duk Yong
• Application Number:
  US14/245,434
• Publication Number:
  US 20140218922A1
• Time in Patent Office: Days
• US Class Current: 362/249.02
• CPC Class Codes: F21S 8/086 with lighting device attached sideways of the standard, e.g. for roads and highways
• CPC Class Codes: F21W 2131/103 of streets or roads
• CPC Class Codes: F21Y 2105/10 comprising a two-dimensional array of point-like light-generating elements
• CPC Class Codes: F21Y 2115/10 Light-emitting diodes [LED]

Abstract

The present invention relates to a lighting method for an LED lighting apparatus, in which e.g. an LED for illuminating an edge of a light distribution pattern far away from a street lamp has a relatively larger illumination angle and a smaller radiation angle, and an LED for illuminating the center of a light distribution pattern near the street lamp and an edge of a light distribution pattern adjacent to the street lamp has a relatively smaller illumination angle and a smaller radiation angle. Thus, each LED illuminates different areas of the road, thereby ensuring the uniformity of illumination of an overall light distribution pattern.

Claims

1. A lighting method, wherein a plurality of LEDs illuminate divided patterns of light distribution patterns, and the divided light distribution patterns are illuminated by adjusting illumination angles and radiation angles of light radiated from the LEDs.

2. The lighting method of claim 1, wherein the light distribution patterns are divided such that areas of the light distribution patterns which are more distant from the LEDS are smaller.

3. The lighting method of claim 2, wherein the distribution patterns are divided to have rectangular or square shapes.

4. The lighting method of claim 1, wherein the illumination angles of the LEDs illuminating the light distribution patterns which are more distant from the LEDs are larger.

5. The lighting method of claim 1, wherein the radiation angles of the LEDs illuminating the light distribution patterns which are more distant from the LEDs are smaller.