LED light

• US 7,524,089 B2
• Filed: 02/03/2005
• Issued: 04/28/2009
• Est. Priority Date: 02/06/2004
• Status: Expired due to Fees

• Current Assignee: Daejin DMP Co., Ltd.
• Original Assignee: Daejin DMP Co., Ltd.
• Inventors: Park, Chang Sik
• Primary Examiner(s): Choi; Jacob Y
• Application Number:
  US11/048,888
• Publication Number:
  US 20050174780A1
• Time in Patent Office: 1,545 Days
• Field of Search: 362/800, 362/545, 362/546, 362/547, 362/549, 362/294, 362/295, 362/300, 362/310, 362/311
• US Class Current: 362/294
• CPC Class Codes: F21K 9/232 specially adapted for generating an essentially omnidirectional light distribution, e.g. with a glass bulb
• 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 29/506 of globes, bowls or cover glasses
• CPC Class Codes: F21V 29/507 of means for protecting lighting devices from damage, e.g. housings
• CPC Class Codes: F21V 29/677 the fans being used for discharging
• CPC Class Codes: F21V 29/773 the planes containing the fins or blades having the direction of the light emitting axis
• CPC Class Codes: F21V 29/83 the elements having apertures, ducts or channels, e.g. heat radiation holes
• CPC Class Codes: F21V 29/89 Metals
• CPC Class Codes: F21V 3/02 characterised by the shape
• CPC Class Codes: F21Y 2107/20 on convex supports or substrates, e.g. on the outer surface of spheres
• CPC Class Codes: F21Y 2115/10 Light-emitting diodes [LED]

Abstract

Disclosed herein is an LED light. The LED light comprises a socket electrically connected to a receptacle, and a cooling fan for forcibly circulating air. The cooling fan is received in a main body, which has a plurality of radial partition walls formed on the outer peripheral surface thereof in such a manner as to be spaced apart from one another with a gap having a slit shape for ventilation. A plurality of LEDs is attached to the outer periphery and/or the inner leading edge of the main body. A circuit board is provided to control the light such that an alternating current supplied from the socket is rectified into a direct current, which is supplied to the cooling fan and the LED.

Claims

1. An LED light comprising:

a socket for electrical connection with a receptacle;

a cooling fan including fan blades for forcibly circulating air;

a main body receiving said cooling fan, said main body being generally cylindrical and ring-shaped, said main body having a plurality of radial partition walls which receive the circulating air therebetween for cooling said main body, said main body having a ceiling extending across an upper portion which is depressed inwardly to form a depression which is closer to the upper portion of said main body than to said socket;

a plurality of LEDs received in said depression and provided on said ceiling, said ceiling being located between said LEDs and said cooling fan;

a lens located at a periphery of said main body and covering said plurality of LEDs; and

a circuit board controlled such that an alternating current supplied from said socket is rectified into a direct current, which is supplied to said cooling fan and said LEDs, said circuit board being located beneath said fan with said fan blades received within said main body,

wherein said cooling fan is provided inside said main body to blow the air towards said ceiling, and

wherein said radial partition walls are provided on a side of said main body and include gaps in said radial partition walls to discharge the blown air towards the side of said main body.

2. The LED light according to claim 1, wherein said radial partition walls are air-communicated along only the outer periphery.

4. The LED light according to claim 1, wherein the gaps have a slit shape.

5. The LED light according to claim 1, wherein each of said radial partition walls have a main surface extending parallel to a radius of said main body.

6. The LED light according to claim 1 or 3, wherein said lens is transparent.

3. An LED light comprising:

a socket for electrical connection with a receptacle;

a cooling fan including fan blades for forcibly circulating air;

a main body receiving said cooling fan, said main body being generally conical, said main body having a plurality of radial partition walls for ventilation which receive the circulating air therebetween for cooling said main body, said radial partition walls being bounded by at least one circumferential wall surrounding a side of said cooling fan;

a plurality of LEDs attached to an outer surface of said circumferential wall;

a lens located at a periphery of said main body and covering said plurality of LEDs; and

a circuit board controlled such that an alternating current supplied from said socket is rectified into a direct current, which is supplied to said cooling fan and said LEDs, said circuit board being located beneath said fan with said fan blades received within said main body,

wherein said LEDs include an LED pack, which includes plural sets of LEDs, and

wherein said cooling fan is provided inside said main body to blow the air towards said lens.

7. The LED light according to claim 3, wherein said radial partition walls are air-communicated along only the leading end of said main body.