Fluorescent reflector lamp assembly

• US 4,939,420 A
• Filed: 05/23/1988
• Issued: 07/03/1990
• Est. Priority Date: 04/06/1987
• Status: Expired due to Fees

• Current Assignee: Kenneth S. Lim
• Original Assignee: Kenneth S. Lim
• Inventors: Lim, Kenneth S.
• Primary Examiner(s): Boudreau, Leo H.
• Assistant Examiner(s): Razavi, Michael
• Application Number:
  US07/197,704
• Time in Patent Office: 771 Days
• Field of Search: 313/318, 313/315, 313/317, 313/313, 315/58, 315/57, 315/56, 315/59, 315/91, 315/71, 336/90, 362/437
• US Class Current: 315/58
• CPC Class Codes: F21V 19/0095 of U-shaped tubular light sources, e.g. compact fluorescent tubes
• 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 29/70 characterised by passive heat-dissipating elements, e.g. heat-sinks
• CPC Class Codes: F21V 29/74 with fins or blades
• CPC Class Codes: F21V 29/89 Metals
• CPC Class Codes: F21Y 2103/37 U-shaped
• CPC Class Codes: H01J 61/025 Associated optical elements
• CPC Class Codes: H01J 61/325 U-shaped lamps
• CPC Class Codes: H01J 61/327 "Compact"-lamps, i.e. lamps having a folded discharge path
• CPC Class Codes: H01J 9/247 specially adapted for gas-discharge lamps

Abstract

A ballast transformer for fluorescent reflector lamp assemblies used in screw-type sockets for conventional incandescent bulbs.

Claims

1. A fluorescent reflector lamp assembly for use in screw-type sockets in recessed lighting applications comprising:

a generally cylindrical base connector adapted to engage screw-type sockets for incandescent bulbs;

a ballast housing connected to the base connector to define a generally annular enclosure for containing a reactance ballast, the generally annular enclosure providing a central recess which is generally rectangular;

a reflector member formed of substantially heat-conductive material and having a reflective shell with a surface formed of a reflective material to reflect heat and light;

a reactance ballast transformer mounted within the annular enclosure, the reactance ballast transformer including a ballast core formed of two generally U-shaped laminated members mounted with the ends of their legs opposite one another and of windings wound about the opposing legs of the U-shaped laminated members; and

receiving means mounted within said central recess to receive the base of the reflector member and a fluorescent illuminator tube assembly in heat-conducting contact with a substantial area of the reflector base whereby heat is dissipated from the reactance ballast transformer and illuminator tube assembly by conduction while light and heat are reflected from the reflective interior surface of the reflector member.