Signal warning and displaying lamp

• US 5,769,532 A
• Filed: 12/12/1996
• Issued: 06/23/1998
• Est. Priority Date: 12/15/1995
• Status: Expired due to Fees

• Current Assignee: PATLITE Corporation. (Inaba Denkisangyo Company Limited)
• Original Assignee: PATLITE Corporation. (Inaba Denkisangyo Company Limited)
• Inventors: Sasaki, Hiroki
• Primary Examiner(s): Sember, Thomas M.
• Application Number:
  US08/764,045
• Time in Patent Office: 558 Days
• Field of Search: 362/800, 362/241, 362/247, 362/249, 362/363, 362/355, 362/356, 362/351, 362/297, 362/346, 362/307, 362/311
• US Class Current: 362/237
• CPC Class Codes: F21S 2/005 of modular construction
• CPC Class Codes: F21S 8/083 of bollard type, i.e. with lighting fixture integrated into the standard or mounted on top of it and having substantially the same diameter
• CPC Class Codes: F21V 7/0091 using total internal reflection
• CPC Class Codes: F21W 2111/00 Use or application of lighting devices or systems for signalling, marking or indicating, not provided for in codes F21W2102/00 – F21W2107/00
• CPC Class Codes: F21W 2111/02 for roads, paths or the like
• CPC Class Codes: F21W 2111/04 for waterways
• CPC Class Codes: F21Y 2115/10 Light-emitting diodes [LED]
• CPC Class Codes: Y10S 362/80 Light emitting diode

Abstract

A signaling lamp including a hollow cylindrical supporting column made from a light-transmitting material which has a central portion bulged outwardly so that the interior surfaces are made into reflective surfaces. LEDs are arranged in rows so as to face each other above and below the reflective surfaces, and the supporting column and the LEDs are surrounded by a globe which has diffusing lenses. The light from the LEDs is reflected toward the circumference by the reflective surfaces and is projected into the surrounding area via the globe.

Claims

1. A signal warning and displaying lamp characterized in that a hollow cylindrical supporting column consisting of a light-transmitting material is installed in an upright position in a center of said signal warning and displaying lamp, a central portion of said supporting column is expanded so that interior surfaces of said central portion are made into reflective surfaces, LEDs are arranged in rows so as to face each other above and below the column, signal light from above and below is reflected in a circumferential direction by said reflective surfaces, and said signal light passes through a diffusing lens of a globe which surrounds an entire lamp assembly and is displayed to a surrounding area.

2. A signal warning and displaying lamp comprising:

a hollow cylindrical column made of a light-transmitting material, an interior of said cylindrical column being provided with a bulged portion at substantially a center thereof with respect to an axis of said cylindrical column, thus forming reflective surfaces on said bulged portion;

stand means integrally formed at both ends of said cylindrical column,

a plurality of LEDs provided circularly on each of said stand means so that light from said LEDs advances into said column from both ends of said cylindrical column and are reflected by said reflective surfaces of said bulged portion so as to advance outward of said cylindrical column; and

a cylindrical globe means provided so as to surround at least said cylindrical column, said cylindrical globe being provided with a light diffusing means on a circumferential surface thereof.

3. A signal warning and displaying lamp according to claim 2, further comprising a connecting means provided on each of said stand means so that a plurality of said lamps are stacked together in a direction of the axis of said cylindrical column via said connecting means.

4. A signal warning and displaying lamp according to claim 2, wherein said LEDs are focusing type LEDs, each having a diffusion angle of approximately 5 degrees.