Electric bulb for identification lamp

• US 5,921,660 A
• Filed: 12/30/1997
• Issued: 07/13/1999
• Est. Priority Date: 01/02/1997
• Status: Expired due to Fees

• Current Assignee: William Yu
• Original Assignee: William Yu
• Inventors: Yu, William
• Primary Examiner(s): O'Shea, Sandra
• Assistant Examiner(s): HONEYMAN, MARSHALL S
• Application Number:
  US09/000,869
• Time in Patent Office: 560 Days
• Field of Search: 362/226, 362/269, 362/800, 362/227, 362/806, 362/427, 362/249, 215/321
• US Class Current: 362/249.03
• CPC Class Codes: F21K 9/232 specially adapted for generating an essentially omnidirectional light distribution, e.g. with a glass bulb
• CPC Class Codes: F21K 9/64 using wavelength conversion means distinct or spaced from the light-generating element, e.g. a remote phosphor layer
• CPC Class Codes: F21Y 2115/10 Light-emitting diodes [LED]
• CPC Class Codes: H05B 45/357 specially adapted for retrofit LED light sources
• CPC Class Codes: Y10S 362/80 Light emitting diode

Abstract

An electric bulb for identification lamp comprising a bulb head, a bulb body, a plurality of light emitting diodes (LEDs) setting over the peripheral surface surrounding said bulb body, and a power supply unit to feed said LEDs, wherein, said power supply unit is set within said bulb body, and said bulb further comprises a connector with one end fixed connected to said bulb head, while another end rotably connected to said bulb body by apply a proper torque. Therefore, the advantages of such bulb are low power consumption and long lift-time, as well as light distribution well with emitting direction adjustable by rotating its body to show a noticeable identification with soft light to the viewers from both side. It also applicable for any lamps where the adjustment of light emitting direction is required.

Claims

1. A bulb for an identification lamps, said bulb comprising:

a bulb head;

a bulb body, said bulb body having a plurality of light emitting diodes surrounding said bulb body,

a power simply unit connected to said light emitting diodes and set within said bulb body, a connection end of said bulb body, said connection end having a pair of clutching slots and a ring slot, said ring slot having at least one lug, and

a connector, said connector having one end fixedly connected to said bulb head and a second end rotatably connected to said bulb body, said connector having an inner surface with a convex ring and a boss, which join with said ring slot on said connection end of said bulb body to limit rotation of said bulb.

2. A bulb for an identification lamps, said bulb comprising:

a bulb head;

a bulb body, said bulb body having a plurality of light emitting diodes surrounding said bulb body,

a connection end, said connection end having a wide section surface and a ring slot around said wide section surface, said connection end having a narrow section surface and a lug on said narrow section surface, and

a connector, said connector having a cylindrical inner surface, said connector having a plurality of spring claws and a boss formed on said cylindrical inner surface, said spring claws clutching at said ring slot to enable said bulb to be rotated relative to said connector and stopped by engagement of said lug and said boss.