High efficiency light for use in a traffic signal light, using LED's

• US 6,019,493 A
• Filed: 03/13/1998
• Issued: 02/01/2000
• Est. Priority Date: 03/13/1998
• Status: Expired due to Fees

• Current Assignee: Chan-Chuan Tai, Kuo, Jeffrey, Kwo-Sou Huang
• Original Assignee: Chan-Chuan Tai, Kuo, Jeffrey, Kwo-Sou Huang
• Inventors: Kuo, Jeffrey, Huang, Kwo-Sou, Tai, Chan-Chuan
• Primary Examiner(s): O'Shea, Sandra
• Assistant Examiner(s): Negron, Ismael
• Application Number:
  US09/042,004
• Time in Patent Office: 690 Days
• Field of Search: 362/800, 362/458, 362/227, 362/236, 362/242-246, 362/268, 362/331-336, 362/267, 362/311, 362/326, 340/907, 116/63 R, 359/542, 359/534
• US Class Current: 362/335
• CPC Class Codes: F21V 5/008 Combination of two or more successive refractors along an optical axis
• CPC Class Codes: F21V 5/04 of lens shape
• CPC Class Codes: F21W 2111/02 for roads, paths or the like
• CPC Class Codes: F21Y 2115/10 Light-emitting diodes [LED]
• CPC Class Codes: G08G 1/095 Traffic lights

Abstract

A high efficiency light which includes a conical lamp shade having a light reflecting inside wall, a circuit board mounted on inside the lamp shade and holding a set of LEDs, a hemispherical inner lens covered on the circuit board over the LEDs inside the lamp shade, the hemispherical inner lens having a center convex lens portion and a plurality of annular convex lens portions around the center convex lens portion, a flat intermediate lens covered on the front open side of the lamp shade, the flat intermediate lens having a center convex lens portion and a plurality of annular biconvex lens portions around the center convex lens portion, and a hollow rounded outer lens mounted on the front open side of the lamp shade over the flat intermediate lens and sealed by a packing ring, the hollow rounded outer lens having a center convex lens portion, a plurality of annular convex lens portions around the center convex lens portion, and a plurality of beehive-like convex lens portions around the annular convex lens portion.

Claims

1. A high efficiency light comprising:

a lamp shade, having a hollow conical shape, an inside wall coated with a layer of light reflecting substance, a front open side, and a bottom side;

a holder fastened to the bottom side of said lamp shade;

a circuit board mounted on said holder inside said lamp shade, said circuit board having a top side coated with a layer of light reflecting substance, a set of light emitting diodes installed in the top side thereof, and a power save control circuit for controlling the operation of said light emitting diodes;

a hemispherical inner lens mounted on said circuit board over said light emitting diodes inside said lamp shade, said hemispherical inner lens comprising a center convex lens portion at the center, and a plurality of annular convex lens portions around the center convex lens portion thereof;

a flat intermediate lens mounted on the front open side of said lamp shade, said flat intermediate lens having a center convex lens portion, and a plurality of annular biconvex lens portions around the center convex lens portion thereof; and

a hollow rounded outer lens mounted on the front open side of said lamp shade over said flat intermediate lens and sealed by a packing ring, said hollow rounded outer lens comprising a center convex lens portion at the center, a plurality of annular convex lens portions around the center convex lens portion thereof, and a plurality of beehive-like convex lens portions around the annular convex lens portion thereof.

2. The high efficiency light of claim 1 which is installed in a signal light bracket and used as a signal light.