Light source structure for signal indication lamp

• US 5,642,933 A
• Filed: 09/14/1995
• Issued: 07/01/1997
• Est. Priority Date: 12/29/1993
• Status: Expired due to Term

• Current Assignee: PATLITE Corporation. (Inaba Denkisangyo Company Limited)
• Original Assignee: PATLITE Corporation. (Inaba Denkisangyo Company Limited)
• Inventors: Hitora, Shozo
• Primary Examiner(s): CARIASO, ALAN B
• Application Number:
  US08/527,892
• Time in Patent Office: 656 Days
• Field of Search: 362/240, 362/241-247, 362/249, 362/252, 362/297, 362/346-348, 362/800, 362/61, 362/80, 362/307, 362/293
• US Class Current: 362/243
• CPC Class Codes: F21S 43/14 Light emitting diodes [LED]
• CPC Class Codes: F21S 43/15 Strips of light sources
• 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 7/0008 providing for indirect lighting
• CPC Class Codes: F21V 7/09 with a combination of different curvatures
• CPC Class Codes: F21V 7/10 Construction
• CPC Class Codes: F21V 9/08 for producing coloured light, e.g. monochromatic; for reducing intensity of light with provision for controlling the colour F21V9/40
• 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 2103/33 annular
• CPC Class Codes: F21Y 2115/10 Light-emitting diodes [LED]
• CPC Class Codes: Y10S 362/80 Light emitting diode

Abstract

A light source structure for a signal indication lamp including a plurality of LEDs and light reflection members. The light reflection member reflects light emitted from the LEDs and projected as signal light in various colors so as to indicate conditions of machines, danger and the like. The light reflection members are provided with spaces in between and disposed within an effective view angle of the LEDs so that light from the LEDs is reflected by the reflection members toward a specified projection direction and is recognized in the same number as that of the reflection members.

Claims

1. A light source structure for a signal indication lamp comprising light emitting diodes and a plurality of reflector members for reflecting a light from said light emitting diodes to a predetermined angle of projection said reflector members being spacedly provided at a predetermined distance from one another and disposed within an effective emission angle of said light emitting diodes, and wherein a plurality of said light emitting diodes are circularly disposed, and a plurality of said reflector members are formed in a stepwise fashion so that signal light is projected through a diffusion filter that covers a circumference of said reflector members.

3. A light source structure for a signal indication lamp according to any one of claim 1 and claim 2, wherein each of said plurality of reflector members has an integrally formed an light emitting diode supporting member for regulating an emission angle of said light emitting diode.

2. A light source structure for a signal indication lamp comprising light emitting diodes and a plurality of reflector members for reflecting a light from said light emitting diodes to a predetermined angle of projection, said reflector members being spacedly provided at a predetermined distance from one another and disposed within an effective emission angle of said light emitting diodes, and wherein a plurality of said light emitting diodes are disposed in a polygonal fashion, and a plurality of said reflector members are disposed in a polygonal fashion and formed in a stepwise fashion so that a signal light is projected through a diffusion filter that covers a circumference of said reflector members.