Cabin lamp

• US 20020145871A1
• Filed: 10/13/2001
• Published: 10/10/2002
• Est. Priority Date: 10/13/2000
• Status: Active Grant

• Current Assignee: Koito Manufacturing Company Limited
• Original Assignee: Koito Manufacturing Company Limited
• Inventors: Yoda, Takashi
• Granted Patent: US 6,595,656 B2
• Time in Patent Office: Days
• US Class Current: 362/241
• 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 comprising 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 is comprised of 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. A cabin lamp comprising:

a lamp housing; and

an LED module detachably attached to said lamp housing and connected via a connector to a feeder element provided in said lamp housing, said LED module being comprised of;

a frame-shaped bezel,

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 said LED substantially forward.

2. A cabin lamp according to claim 1, wherein said connector shaped as a cap for a bulb is comprised of:

a cylindrical element made of conductive metal,

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

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

3. A cabin lamp 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 reach after being reflected by said reflectors.

4. A cabin lamp according to claim 2, 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 reach after being reflected by said reflectors.