Lighting assembly for mail sorting system

• US 5,521,365 A
• Filed: 09/06/1994
• Issued: 05/28/1996
• Est. Priority Date: 09/06/1994
• Status: Expired due to Term

• Current Assignee: Tritek Technologies, Inc.
• Original Assignee: Promar, Incorporated
• Inventors: Malatesta, James
• Primary Examiner(s): Shepperd, John
• Assistant Examiner(s): LEE, MICHAEL GUNYOUNG
• Application Number:
  US08/300,754
• Time in Patent Office: 630 Days
• Field of Search: 235/454, 235/462, 235/472, 362/373, 362/250, 362/427, 209/584, 209/900, 209/934, 209/939
• US Class Current: 235/454
• CPC Class Codes: G06K 7/14 using light without selection of wavelength, e.g. sensing reflected white light G06K7/10831 - G06K7/1097 take precedence
• CPC Class Codes: Y10S 209/90 Sorting flat-type mail

Abstract

A mail sorting system includes a transport surface on which the items of mail are moved in series past a reading station having an aperture where information on the items of mail is read by a reader to assist in the sorting of the mail. The lighting assembly is mounted in the reading station. The lighting assembly includes at least one light or light emitter which directs a path of light toward the aperture. A light diffusion partition is mounted between the light emitter and the aperture for diffusing the path of light before it reaches the aperture. The lighting assembly is mounted displaced from the reader with the light emitter at an angle to the reader to provide the reader with a clear, unobstructed view of the aperture and with the path of light from the light emitter being deflected away from the reader.

Claims

1. In a mail sorting system having a transport assembly for transporting items of mail seriatim past a reading station having an aperture where information on the items of mail is read by a reader to assist in the sorting of the mail, the improvement being in that a guide surface is mounted in said reading station, an aperture plate mounted juxtaposed said guide surface whereby items of mail are conveyed seriatim through said reading station and pass between said guide surface and said aperture plate, an aperture in said aperture plate for selectively exposing the information on the items of mail as the information is disposed at said aperture, said reader having a path of view directed to said aperture, a light assembly mounted in said reading station, said light assembly including at least one light emitter mounted for directing a path of light toward said aperture, a diffuser partition between said light emitter and said aperture for diffusing the path of light before the path of light reaches said aperture, said reader and said lighting assembly being mounted on the same side of said aperture plate as each other, and said lighting assembly being mounted displaced from said reader and at an angle to said reader to provide said reader with a clear unobstructed view of said aperture with the path of light from said emitter being deflected away from said reader.

2. The system of claim 1 wherein said lighting assembly includes an enclosure, said light emitter being mounted within said enclosure, said diffuser partition being mounted to said enclosure, and an air circulating system for circulating air through said enclosure for cooling said light emitter.

3. The system of claim 2 wherein a plurality of said light emitters is mounted in said enclosure.

4. The system of claim 3 wherein each of said light emitters is a halogen light.

5. The system of claim 4 wherein said enclosure has an open front end, and said diffuser partition being mounted at and closing said front end.

6. The system of claim 5 wherein said air circulating system includes a fan mounted in said enclosure remote from said halogen lights at the back end of said enclosure, an inlet grill mounted to said back end of said enclosure for permitting air to be drawn into said enclosure by said fan, and exhaust vents in said enclosure whereby the air drawn into said enclosure may circulate around said halogen lights and be discharged through said exhaust vents.

7. The system of claim 1 wherein said mail sorting system is a high speed automated mail sorting system, and said aperture plate having structure to deflect each item of mail as it passes said aperture.

8. The system of claim 7 wherein said reader is an optical character reader and bar code reader.

9. In a mail sorting system having a transport assembly for transporting items of mail seriatim past a reading station having an aperture where information on the items of mail is read by a reader to assist in the sorting of the mail, the improvement being in that a light assembly is mounted in said reading station, said light assembly including at least one light emitter mounted for directing a path of light toward said aperture, a diffuser partition between said light emitter and said aperture for diffusing the path of light before the path of light reaches said aperture, said lighting assembly being mounted displaced from said reader and at an angle to said reader to provide said reader with a clear unobstructed view of said aperture with the path of light from said emitter being deflected away from said reader, said lighting assembly including an enclosure, said light emitter being mounted within said enclosure, said diffuser partition being mounted to said enclosure, an air circulating system for circulating air through said enclosure for cooling said light emitter, a plurality of said light emitters being mounted in said enclosure, and each of said light emitters being adjustably mounted in its orientation in said enclosure.

10. The system of claim 9 wherein each of said light emitters is rotationally and slidably mounted in said enclosure.

11. In a mail sorting system having a transport assembly for transporting items of mail seriatim past a reading station having an aperture where information on the items of mail is read by a reader to assist in the sorting of the mail, the improvement being in that a light assembly is mounted in said reading station, said light assembly including at least one light emitter mounted for directing a path of light toward said aperture, a diffuser partition between said light emitter and said aperture for diffusing the path of light before the path of light reaches said aperture, said lighting assembly being mounted displaced from said reader and at an angle to said reader to provide said reader with a clear unobstructed view of said aperture with the path of light from said emitter being deflected away from said reader, said lighting assembly including an enclosure, said light emitter being mounted within said enclosure, said diffuser partition being mounted to said enclosure, an air circulating system for circulating air through said enclosure for cooling said light emitter, a plurality of said light emitters being mounted in said enclosure, each of said light emitters being a halogen light, a pair of sockets mounted to said enclosure, a post mounted to and spanning said sockets, each of said halogen lights being mounted to a bracket, each of said brackets being mounted to a mounting block, each of said mounting blocks being mounted on said post, and selective fastening means on each of said mounting blocks to permit each of said mounting blocks to be selectively rotated and slidably moved on said posts.

12. The system of claim 11 wherein said mail sorting system is a high speed automated mail sorting system, an aperture plate being mounted at said aperture, and said aperture plate having structure to deflect each item of mail as it passes said aperture.

13. The system of claim 12 wherein said reader is an optical character reader and bar code reader.

14. In a method of automatically sorting mail in a high speed automated mail sorting system wherein items of mail are moved seriatim past a reading station having an aperture, wherein information on the items of mail is read by a reader to assist in the sorting of mail, the improvement being in conveying the items of mail seriatim through the reading station by passing the items between a guide surface and an aperture plate, selectively exposing the information on the items of mail through the aperture which is located in the aperture plate, mounting a light source and a diffuser partition in the reading station on the same side of the aperture plate as the reader, directing a path of light through the diffuser partition at the reading station with the path of light being directed at an angle to the line of view of the reader so that the reader has an unobstructed view of the aperture, and deflecting the path of light away from the reader upon reaching the aperture.