Lamp cooling system

• US 5,458,505 A
• Filed: 02/03/1994
• Issued: 10/17/1995
• Est. Priority Date: 02/03/1994
• Status: Expired due to Fees

• Current Assignee: Jay H. Prager
• Original Assignee: Jay H. Prager
• Inventors: Prager, Jay H.
• Primary Examiner(s): Bradley, P. Austin
• Assistant Examiner(s): Knapp, Jeffrey T.
• Application Number:
  US08/190,841
• Time in Patent Office: 621 Days
• Field of Search: 439/485, 439/487, 361/697, 361/695
• US Class Current: 439/485
• CPC Class Codes: F21V 19/006 of point-like light sources, e.g. incandescent or halogen lamps, with screw-threaded or bayonet base of sources having contact pins, wires or blades F21V19/0005; of LEDs or sources mounted on printed-circuit board F21V19/001
• CPC Class Codes: F21V 23/02 the elements being transformers, impedances or power supply units, e.g. a transformer with a rectifier
• CPC Class Codes: F21V 29/67 characterised by the arrangement of fans
• CPC Class Codes: F21V 29/74 with fins or blades
• CPC Class Codes: F21V 29/83 the elements having apertures, ducts or channels, e.g. heat radiation holes
• CPC Class Codes: H01R 33/9453 for screw type coupling devices

Abstract

Lamp cooler housing contains a lamp socket and a heat sink in association with an internal lamp socket. The heat sink carries fins thereon. A motor-driven fan in the housing moves air across the internal lamp socket and fins for their cooling. Electronics may be mounted in the housing for powering the fan motor and/or the lamp. The moving air also passes across these electronics for the cooling thereof.

Claims

1. A lamp cooling system comprising:

a housing, said housing having a plug thereon for connection to an electric power supply;

a receptacle on said housing, said receptacle being sized to support and electrically connect an electric light bulb having first electrical characteristics;

an electric motor having second electrical characteristics and a fan connected to be driven by said electric motor, said electric motor and said fan both being within said housing, said fan being positioned so that it causes air to cool said receptacle; and

means in said housing connected to said plug, said receptacle and said motor for receiving electric power from said plug and delivering electric power of first electrical characteristics to said receptacle and deliver electric power of second and different electrical characteristics to said motor.

2. A lamp cooling system comprising:

a housing, said housing having a plug thereon for connection to an electric power supply;

a receptacle on said housing, said receptacle being sized to support and electrically connect an electric light bulb;

a heat sink in said housing, said heat sink being thermally connected to said receptacle, said heat sink having fins thereon for heat dissipation;

an electric motor and a fan connected to be driven by said electric motor, said electric motor and said fan both being within said housing, said fan being positioned so that it causes air to move across said fins of said heat sink to cool said heat sink and said receptacle; and

an electric power converter within said housing, said electric power converter being connected to said plug and to said motor for supplying electric power to said fan motor, said electronic converter being positioned to be cooled by air moved by said fan.

3. The lamp cooling system of claim 2 wherein said converter supplies direct current to said fan motor.

4. The lamp cooling system of claim 2 wherein there is a fan step within said housing and there is a fan support board mounted on said fan step, said motor being mounted on said fan support board, said fan support board having at least one opening therethrough to permit air delivered by said fan to pass through said fan support board.

5. The lamp cooling system of claim 2 wherein said heat sink has metal fingers thereon extending adjacent said receptacle, said metal fingers being positioned to engage upon a light bulb engaged in said receptacle.

6. The lamp cooling system of claim 2 wherein there is a heat sink step within said housing and said heat sink has a platform and said heat sink platform rests on said heat sink step, said heat sink platform having at least one opening therethrough so that air moved by said fan moves through said heat sink platform.

7. The lamp cooling system of claim 6 wherein there is a fan step within said housing and there is a fan support board mounted on said fan step, said motor being mounted on said fan support board, said fan support board having at least one opening therethrough to permit air delivered by said fan to pass through said fan support board.

8. The lamp cooling system of claim 7 wherein said plug is a screw-threaded plug and said receptacle is a screw-threaded receptacle.

9. The lamp cooling system of claim 6 wherein said heat sink has metal fingers thereon extending adjacent said receptacle, said metal fingers being positioned to engage upon a light bulb engaged in said receptacle.

10. A lamp cooling system comprising:

a housing, said housing having a plug thereon and having a receptacle therein, said plug being sized and positioned to be connected to an electric power supply, said receptacle in said housing being sized to receive and power a lamp bulb of first electrical characteristics;

an electric motor of second and different electrical characteristics, fan blades mechanically connected to said electric motor to be actuated when said electric motor is energized, both said motor and said fan blades being within said housing, said fan blades being positioned to move air past said receptacle within said housing to cool said receptacle within said housing; and

means in said housing connected to said plug, to said motor and to said receptacle for receiving electric power from said plug and delivering electric power of first characteristics to said lamp receptacle and electric power of second and different electrical characteristics to said fan motor.

11. The lamp cooling system of claim 10 wherein there is a fan support board in said housing, said electric motor being mounted on said fan support board, said fan support board having openings therethrough to permit flow of air therepast.

12. The lamp cooling system of claim 10 wherein there is a heat sink plate in said housing, said heat sink plate being in thermal communication with said receptacle in said housing, fins on said heat sink plate adjacent said receptacle, said fins being within said housing and wherein said heat sink plate engages on a shoulder within said housing to position said heat sink plate and said fins in said housing.

13. The lamp cooling system of claim 12 wherein there is a fan support board in said housing, said electric motor being mounted on said fan support board, said fan support board having openings therethrough to permit flow of air therepast.

14. The lamp cooling system of claim 13 wherein there is a shoulder in said housing and said fan support board rests on said shoulder.

23. The lamp cooling system of claim 10 wherein said housing has threads thereon and a lamp cover has a base thereon, said base being in threaded engagement with said housing to position and retain said lamp cover over a lamp bulb in said lamp receptacle.

24. The lamp cooling system of claim 23 wherein said lamp cover base has openings therein so that air moved by said fan passes through said lamp cover base.

15. A lamp cooling system comprising:

a housing, said housing having a plug thereon and having a receptacle therein, said plug being sized and positioned to be connected to an electric power supply, said receptacle in said housing being sized to receive and power a lamp bulb;

a heat sink in said housing, said heat sink being in thermal communication with said receptacle in said housing, fins on said heat sink plate adjacent said receptacle, said fins being within said housing;

an electric motor, fan blades mechanically connected to said electric motor to be actuated when said electric motor is energized, both said motor and said fan blades being within said housing, said fan blades being positioned to move air across said fins and past said receptacle within said housing to cool said receptacle within said housing; and

a power converter in said housing, said power converter being connected to said plug to be energized by said plug, said power converter being connected to said motor to supply power thereto.

16. The lamp cooling system of claim 15 wherein said power converter is mounted on a board and said board engages on a shoulder in said housing, said board having openings therethrough so that air moved by said fan passes through said converter support board and past said power converter to cool said power converter.

17. The lamp cooling system of claim 15 wherein said heat sink plate engages on a shoulder within said housing to position said heat sink plate and said fins in said housing.

18. The lamp cooling system of claim 17 wherein there is a fan support board in said housing, said electric motor being mounted on said fan support board, said fan support board having openings therethrough to permit flow of air therepast.

19. The lamp cooling system of claim 15 wherein said lamp receptacle in said housing is sized to receive a halogen lamp and said power converter is connected to supply power to said lamp receptacle.

20. The lamp cooling system of claim 19 wherein said cooling fins extend adjacent said lamp receptacle and adjacent a halogen lamp inserted in said lamp receptacle.

21. The lamp cooling system of claim 20 wherein said housing has threads thereon and a lamp cover has a base thereon, said base being in threaded engagement with said housing to position and retain said lamp cover over a lamp bulb in said lamp receptacle.

22. The lamp cooling system of claim 21 wherein said lamp cover base has openings therein so that air moved by said fan passes through said lamp cover base.