Lamp construction

• US 4,772,991 A
• Filed: 07/02/1987
• Issued: 09/20/1988
• Est. Priority Date: 07/02/1987
• Status: Expired due to Fees

• Current Assignee: Coleman Wood
• Original Assignee: Coleman Wood
• Inventors: Wood, Coleman
• Primary Examiner(s): Dority, Jr., Carroll B.
• Application Number:
  US07/069,111
• Time in Patent Office: 446 Days
• Field of Search: 362/285, 362/287, 362/418, 362/419, 362/426, 362/427
• US Class Current: 362/287
• CPC Class Codes: F21S 6/003 for task lighting, e.g. for reading or desk work, e.g. angle poise lamps
• CPC Class Codes: F21V 21/30 Pivoted housings or frames
• 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 23/04 the elements being switches safety devices F21V25/00

Abstract

In a lamp, a construction is set forth including a low voltage power source including an adjustable supply to a transformer in a base wherein the transformer is connected with a pair of coextensive arms. The arms are preferably made of metal and are the conductors. The voltage level is intrinsically safe. The arms extend to remotely support a housing with a bulb therein. The housing has a pair of oppositely positioned sockets and the arm supports miniature banana plugs which stab into the sockets to provide electrical current for bulb operation and to also serve as a pivot for the housing. In addition, a greater measure of freedom is obtained by incorporating a pivot wherein the arms pivotally connect with a second pair of coextensive arms to provide an added degree of freedom.

Claims

1. A lighting system providing illumination from a low voltage power source, the system comprising:

(a) a base supporting a low voltage power source;

(b) a pair of coextensive arms extending from said base and acting as electrical current carriers so that low voltage power is delivered through said coextensive arms;

(c) a second pair of coextensive arms spaced from one another;

(d) a pair of brackets joined to said second pair of arms;

made of electrically non-conductive material wherein said pivot means rotationally join said first pair are connected to said first pair of arms to power source, through said first arms, through said pivot means and to said second arms.

2. The apparatus of claim 1 wherein said bracket is printed circuit board material and has conductor paths formed thereon as a metal ply affixed to a face thereof.

3. The apparatus of claim 2 wherein said first pair of arms are conductive metal and said second pair of arms are conductive metal.

4. The apparatus of claim 3 wherein said bracket comprises a pair of spaced sheet insulators.

5. The apparatus of claim 4 wherein said spaced sheet insulator members are bolted to said first and second pairs of arms.

6. The apparatus of claim 5 wherein said pivot means comprise electrically conductive members extending from said bracket means.

7. The structure of claim 2 including a generally square housing a bulb in said housing wherein said housing includes means for directing light from said housing;

8. The apparatus of claim 7 wherein said housing incorporates an internal mounting plate supporting a lamp base adapted to receive said bulb therein, and said base and bulb are positioned relative to a light reflector in said housing to direct light out of said housing from said bulb.

9. The apparatus of claim 8 wherein said housing has an open side and a parallel back side positioning in said light reflector to direct light out of said housing.

10. The apparatus of claim 9 wherein said housing has a surrounding wall between said open side and closed side and said surrounding wall supports said two pivot means opposite of one another on a pair of L-shaped mounting brackets appended to the end of said arms.

11. The application of claim 10 wherein said mounting brackets are insulated electrically to define two separate current flow paths for said bulb.

12. The apparatus of claim 1 wherein said pivot means includes:

(a) an end portion of a first arm of said first pair of arms;

(b) an end portion of a first arm of said second pair of arms;

(c) conductive metal contacting areas on said arm end portions; and

(d) bolt and cooperative threaded nut means clamping said end portions to one of said brackets to create an electrical pathway therethrough.