Cabin lamp

• US 6,595,656 B2
• Filed: 10/12/2001
• Issued: 07/22/2003
• Est. Priority Date: 10/13/2000
• Status: Expired due to Fees

• Current Assignee: Koito Manufacturing Company Limited
• Original Assignee: Koito Manufacturing Company Limited
• Inventors: Yoda, Takashi
• Primary Examiner(s): O'Shea, Sandra
• Assistant Examiner(s): Tsidulko, Mark
• Application Number:
  US09/976,689
• Publication Number:
  US 20020145871A1
• Time in Patent Office: 648 Days
• Field of Search: 362/187, 362/488, 362/489, 362/490, 362/544, 362/545, 362/237, 362/240, 362/241, 362/244, 362/246, 362/249, 439/332, 439/337, 439/616, 439/671
• US Class Current: 362/187
• CPC Class Codes: B60Q 3/44 Spotlighting, e.g. reading lamps
• CPC Class Codes: F21K 9/20 Light sources comprising attachment means
• CPC Class Codes: F21V 21/30 Pivoted housings or frames
• CPC Class Codes: F21W 2106/00 Interior vehicle lighting devices
• CPC Class Codes: F21Y 2115/10 Light-emitting diodes [LED]

Abstract

A cabin lamp used in, for instance, an airplane having an LED module that is attached to a lamp housing and connected via a connector to a feeder element provided in the lamp housing. The LED module has a printed circuit board and a plurality of reflectors that are installed in a frame-shaped bezel detachably attached to a front end portion of the lamp housing. The printed circuit board is mounted with a plurality of light emitting diodes (LEDs), and the reflectors surround each of the LEDs so as to reflect the light from the LEDs substantially forward.

Claims

1. An LED module for replacing a cabin lamp having an incandescent bulb which is installed in a lamp housing, said LED module detachably attached to said lamp housing and electrically connected via an electrical connector to an electric feeder element for said incandescent bulb provided in said lamp housing, said LED module being comprised of:

a frame-shaped bezel for detachably attaching said LED module to said lamp housing,

a printed circuit board which is installed in said bezel and is provided thereon with a plurality of light emitting diodes (LEDs), and

a plurality of reflectors which are installed in said bezel and surround said LEDs separately so as to reflect a light from each of said plurality of said LEDs substantially forward.

2. An LED module according to claim 1, wherein said electrical connector is shaped as a cap for an incandescent bulb and is comprised of:

a cylindrical element made of conductive metal,

connector pins protruding from an external side surface of said cylindrical element, and

an electrical feeder terminal disposed at one end of said cylindrical element, said electrical feeder terminal being insulated with respect to said cylindrical element.

3. An LED module according to claim 1, wherein said plurality of reflectors are filled with transparent synthetic resin;

and

wherein protruding condenser steps are provided in direct light ray regions of a surface of said transparent synthetic resin where light from said LEDs is directly projected, and a plurality of fisheye steps are provided in a reflected ray region where light from said LEDs roach after being reflected by said reflectors.

4. An LED module according to claim 2, wherein said plurality of reflectors are fined with transparent synthetic resin;

and wherein protruding condenser steps are provided in direct light ray regions of a surface of said transparent synthetic resin where light from said LEDs is directly projected, and a plurality of fisheye steps are provided in a reflected ray region where light from said LEDs reach alter being reflected by said reflectors.