LED array with a multi-directional, multi-functional light reflector

• US 20010009510A1
• Filed: 02/23/2001
• Published: 07/26/2001
• Est. Priority Date: 05/27/1999
• Status: Abandoned Application

• Current Assignee: LEDtronics Incorporated
• Original Assignee: LEDtronics Incorporated
• Inventors: Lodhie, Pervaiz
• Application Number:
  US09/789,873
• Publication Number:
  US 20010009510A1
• Time in Patent Office: Days
• US Class Current: 362/247
• CPC Class Codes: F21V 19/003 Fastening of light source holders, e.g. of circuit boards or substrates holding light sources
• CPC Class Codes: F21V 7/05 plane
• CPC Class Codes: F21V 7/10 Construction
• CPC Class Codes: F21V 7/18 with provision for folding or collapsing
• CPC Class Codes: F21Y 2115/10 Light-emitting diodes [LED]
• CPC Class Codes: G07F 17/3211 Display means
• CPC Class Codes: G07F 19/20 Automatic teller machines [ATMs]
• CPC Class Codes: G07F 19/201 Accessories of ATMs
• CPC Class Codes: G07F 19/205 Housing aspects of ATMs
• CPC Class Codes: G07F 9/02 Devices for alarm or indication, e.g. when empty; Advertising arrangements in coin-freed apparatus alarms or warning devices indicating the interruption of flow to be metered G07F15/10
• CPC Class Codes: Y10S 362/80 Light emitting diode

Abstract

A light source particularly suited for a display in a dispensing machine. The light source includes an array of light emitting diodes (LEDs) mounted on a printed circuit board (PCB) with a multi-directional, multi-functional reflector disposed about the PCB. The reflector reflects the LED light in multi-directions and serves to provide a more uniform light intensity throughout the illuminated surface. The reflector also encloses the total light radiation to a predefined surface area.

Claims

1. A light source comprising:

a printed circuit board;

a light emitting diode mounted on said printed circuit board; and

a reflector disposed on said printed circuit board, said reflector having a flap surface and a planar surface for reflecting light from said light emitting diode.

2. The light source of

claim 1

further comprising a resistor mounted on said printed circuit board.

3. The light source of

claim 1

further comprising a voltage regulator mounted on said printed circuit board.

4. The light source of

claim 1

further comprising a resistor and a voltage regulator mounted on said printed circuit board.

5. The light source of

claim 1

wherein said planar surface is rectangular in shape.

6. The light source of

claim 1

wherein said reflector planar surface is provided with means for allowing installation of said reflector onto said printed circuit board with said light emitting diode mounted on said printed circuit board.

7. The light source of

claim 1

further including a display opening member having a border portion wherein said reflector fits into said display opening member and engages said border portion.

8. A light source comprising:

a printed circuit board;

at least three light emitting diodes mounted on said printed circuit board in spaced relationship;

a reflector disposed on said printed circuit board, said reflector having four flaps extending from a planar surface for reflecting light from said light emitting diodes.

9. The light source of

claim 8

further comprising a resistor and a voltage regulator mounted on said printed circuit board.

10. The light source of

claim 8

wherein at least two light emitting diodes are parallel to said planar surface.

11. The light source of

claim 8

wherein a light emitting diode is perpendicular to said planar surface.

15. The light source of

claim 10

wherein at least one light emitting diode is perpendicular to said planar surface.

12. A light source comprising:

a printed circuit board;

at least two light emitting diodes mounted on said printed circuit board; and

a reflector disposed on said printed circuit board, said reflector having a flap section extending from a planar surface for reflecting light from said light emitting diodes.

13. The light source of

claim 12

further comprising a resistor and a voltage regulator mounted on said printed circuit board.

14. The light source of

claim 12

wherein at least one light emitting diode is parallel to said planar surface.