Sealed LED light bulb

• US 20080080187A1
• Filed: 09/28/2006
• Published: 04/03/2008
• Est. Priority Date: 09/28/2006
• Status: Abandoned Application

• Current Assignee: R & M Ledlite, LLC
• Original Assignee: R & M Ledlite, LLC
• Inventors: Purinton, Richard S.
• Application Number:
  US11/529,193
• Publication Number:
  US 20080080187A1
• Time in Patent Office: Days
• US Class Current: 362/294
• CPC Class Codes: F21K 9/00 Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
• CPC Class Codes: F21K 9/23 Retrofit light sources for lighting devices with a single fitting for each light source, e.g. for substitution of incandescent lamps with bayonet or threaded fittings
• CPC Class Codes: F21K 9/238 Arrangement or mounting of circuit elements integrated in the light source
• CPC Class Codes: F21V 23/002 Arrangements of cables or conductors inside a lighting device, e.g. means for guiding along parts of the housing or in a pivoting arm
• CPC Class Codes: F21V 23/006 the substrate being distinct from the light source holder
• CPC Class Codes: F21V 3/02 characterised by the shape
• CPC Class Codes: F21V 3/061 the material being glass
• CPC Class Codes: F21V 31/005 Sealing arrangements therefor
• CPC Class Codes: F21Y 2115/10 Light-emitting diodes [LED]

Abstract

The present invention is directed to a hermetically sealed LED light bulb with internal photo control circuit to be used in remote locations and harsh environments. The internal photo control circuit provides for either, a single LED or an array of LED'"'"'s to turn on or off depending on the ambient light level. A hermetically sealed LED light bulb will include an internal photo control circuit including an LED and phototransistor mounted on a circuit board sealed by a glass dome connected to a base. The base of the sealed light bulb will have a variety of conventional attachment means including bayonet and threaded connection. With minor adjustments in the control circuit, the sealed LED light bulb will be available in variety of conventional voltages. A polymer or rubber sleeve will be provided to insure a sealed connection at the base.

Claims

1. A sealed light emitting diode (LED) light bulb comprising:

(a) a base having an integral expanded diameter shell with a flat lower surface, and one or more electrical contact points;

(b) an LED light source and a phototransistor both electrically mounted to a metal clad printed circuit board, and a two-sided printed circuit board having an upper side and a lower side;

(c) a fiberglass insulator and a Mylar insulator; and

(d) a protective cover dome

whereby said metal clad printed circuit board is in electrical communication with said two-sided printed circuit board and said two-sided circuit board is in electrical communication with said one or more electrical contacts on said base, and

further whereby said fiberglass insulator is sandwiched between said metal clad printed circuit board, said Mylar insulator is sandwiched between said two-sided printed circuit board and said flat lower surface of said integral expanded diameter shell, with said shell hermetically sealed to said protective cover dome, forming a sealed bulb, thereby protecting all of the electrical circuitry, the LED and the phototransistor inside the sealed bulb.

2. The sealed LED bulb according to claim 1, wherein said base having an integral expanded diameter shell with a flat lower surface, and one or more electrical contact points, includes a base adaptable to any conventional light bulb receiver.

3. The sealed LED bulb according to claim 2, wherein said base includes a bayonet base having a single contact point.

4. The sealed LED bulb according to claim 2, wherein said base includes a bayonet base having a two or more contact points.

5. The sealed LED bulb according to claim 2, wherein said base is a screw type threaded base having one or more contact points.

6. The sealed LED bulb according to claim 2, wherein said base is a push-in type base having one or more contact points.

7. The sealed LED bulb according to claim 1, wherein said LED light source is any conventional LED light source.

8. The sealed LED bulb according to claim 7, wherein said LED light source is a domed top LED.

9. The sealed LED bulb according to claim 7, wherein said LED light source is a conical top LED.

10. The sealed LED bulb according to claim 1, wherein said protective dome cover is translucent or opaque, clear or colored.

11. A method for making a sealed LED bulb comprising the steps of:

(a) providing a base having an integral expanded diameter shell with a flat lower surface, and one or more electrical contact points;

(b) providing an LED light source and a phototransistor both electrically mounted to a metal clad printed circuit board, and a two-sided printed circuit board having an upper side and a lower side;

(c) providing a fiberglass insulator and a Mylar insulator;

(d) providing a protective cover dome;

(e) wiring said metal clad printed circuit board in electrical communication with said two-sided printed circuit board and wiring said two-sided circuit board in electrical communication with said one or more electrical contacts on said base;

(f) positioning said fiberglass insulator between said metal clad printed circuit board;

(g) positioning said Mylar insulator between said two-sided printed circuit board and said flat lower surface of said integral expanded diameter shell;

(h) hermetically sealing said shell to said protective cover dome, forming a sealed bulb, thereby protecting all of the electrical circuitry, the LED and the phototransistor inside the sealed bulb.

12. The method for making a sealed LED bulb according to claim 11, wherein said step of providing a base having an integral expanded diameter shell with a flat lower surface, and one or more electrical contact points, includes the step of providing a base adaptable to any conventional light bulb receiver.

13. The method for making a sealed LED bulb according to claim 12, wherein said step of providing a base having an integral expanded diameter shell with a flat lower surface, and one or more electrical contact points, includes the step of providing a base wherein said base includes a bayonet base having a single contact point.

14. The method for making a sealed LED bulb according to claim 12, wherein said step of providing a base having an integral expanded diameter shell with a flat lower surface, and one or more electrical contact points, includes the step of providing a base wherein said base includes a bayonet base having a two or more contact points.

15. The method for making a sealed LED bulb according to claim 12, wherein said step of providing a base having an integral expanded diameter shell with a flat lower surface, and one or more electrical contact points, includes the step of providing a base, wherein said base is a screw type threaded base having one or more contact points.

16. The method for making a sealed LED bulb according to claim 12, wherein said step of providing a base having an integral expanded diameter shell with a flat lower surface, and one or more electrical contact points, includes the step of providing a base, wherein said base is a push-in type base having one or more contact points.

17. The method for making a sealed LED bulb according to claim 11, wherein said step of providing an LED light source and a phototransistor both electrically mounted to a metal clad printed circuit board further includes the step of providing any conventional LED light source.

18. The method for making a sealed LED bulb according to claim 17, wherein said step of providing an LED light source and a phototransistor both electrically mounted to a metal clad printed circuit board further includes the step of providing a domed top LED.

19. The method for making a sealed LED bulb according to claim 17, wherein said step of providing an LED light source and a phototransistor both electrically mounted to a metal clad printed circuit board further includes the step of providing a conical top LED.

20. The method for making a sealed LED bulb according to claim 11, wherein said step of providing a protective cover dome further includes the step of providing a protective cover dome that is translucent or opaque, clear or colored.