Optical semiconductor lighting apparatus

• US 8,801,231 B2
• Filed: 01/24/2013
• Issued: 08/12/2014
• Est. Priority Date: 08/06/2010
• Status: Expired due to Fees

• Current Assignee: Posco Led Company Ltd. (TMS Co., Ltd.)
• Original Assignee: Posco Led Company Ltd. (TMS Co., Ltd.)
• Inventors: Kim, Dong-Soo, Kang, Seok-Jin, Jeong, Min-A
• Primary Examiner(s): Lee, Diane
• Assistant Examiner(s): Sufleta, II, Gerald J
• Application Number:
  US13/748,981
• Publication Number:
  US 20130128588A1
• Time in Patent Office: 565 Days
• Field of Search: 362/249.02, 362/294, 362/311.02, 362/800, 362/547, 362/218, 362/264, 362/345, 361/695, 361/697, 361/703, 361/704, 361/707, 361/709
• US Class Current: 362/294
• CPC Class Codes: F21S 8/026 intended to be recessed in a ceiling or like overhead structure, e.g. suspended ceiling
• CPC Class Codes: F21V 23/0457 the sensor sensing the operating status of the lighting device, e.g. to detect failure of a light source or to provide feedback to the device
• CPC Class Codes: F21V 29/505 of reflectors
• CPC Class Codes: F21V 29/507 of means for protecting lighting devices from damage, e.g. housings
• CPC Class Codes: F21V 29/67 characterised by the arrangement of fans
• 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 29/78 with helically or spirally arranged fins or blades
• CPC Class Codes: F21V 29/83 the elements having apertures, ducts or channels, e.g. heat radiation holes
• CPC Class Codes: F21Y 2105/10 comprising a two-dimensional array of point-like light-generating elements
• CPC Class Codes: F21Y 2115/10 Light-emitting diodes [LED]

Abstract

An optical semiconductor lighting apparatus including a housing with a first end portion and a second end portion that is open, a light source module disposed in the housing, a fan disposed adjacent to the light source module in the housing, the fan rotating in a first direction to blow air toward the light source module, and a reflector disposed adjacent to the second end portion of the housing, the reflector enhancing an illumination scope. A moving path, in which at least a portion of the air drawn into the housing by the fan externally flows through the light source module, is formed in the housing.

Claims

1. An optical semiconductor lighting apparatus, comprising:

a housing comprising a first end portion and a second end portion, wherein the first and second end portions comprise two separate pieces forming a plurality of outer vents therebetween;

a light source module disposed inside the housing, the light source module comprising a plurality of optical semiconductor elements;

a reflector forming at least a portion of the second end portion of the housing, wherein;

the reflector comprises a first surface configured to reflect light emitted from the light source module and a second surface formed opposite to the first surface;

the second surface is exposed to ambient air; and

the reflector is coupled to a plurality of end portion supports disposed on the second end portion, each of the end portion supports being separated from one another by the plurality of outer vents, respectively;

a fan disposed inside the housing adjacent to the light source module, wherein;

the fan is disposed above the plurality of outer vents with respect to air flow from the fan;

the fan is configured to rotate in a first direction whereby air is blown through the plurality of outer vents towards the light source module and is ejected over the second surface of the reflector;

an inner vent disposed in a base plate along an axis that is at an acute angle with respect to a vertical line, the inner vent being disposed between the light source module and the outer vent.

2. The optical semiconductor lighting apparatus of claim 1, wherein the plurality of outer vents is formed so that the fan moves air drawn into inside of the housing toward an exterior surface of the reflector.

3. The optical semiconductor lighting apparatus of claim 2, wherein the plurality of outer vents is formed to be inclined along the exterior surface of the reflector.

4. The optical semiconductor lighting apparatus ef-any of claim 1, further comprising a dust collecting module configured to collect dust in air contained in the reflector.

5. The optical semiconductor lighting apparatus of any of claim 1, further comprising a heat sink configured to dissipate heat generated from the light source module.

6. The optical semiconductor lighting apparatus of claim 1, wherein each outer vent of the plurality of outer vents is at least partially enclosed by a side surface of an end portion support of the plurality of end portion supports.

7. The optical semiconductor lighting apparatus of claim 1, wherein the housing extends in a first direction, the plurality of end portion supports extend in the first direction, and the plurality of outer vents are respectively disposed between the plurality of end portion supports along a second direction substantially perpendicular to the first direction.

8. The optical semiconductor lighting apparatus of claim 1, wherein the fan is configured to prevent dust, air entrained particulates, and foreign substances from penetrating into the optical semiconductor lighting apparatus or adhering to the second surface of the reflector.

9. The optical semiconductor lighting apparatus of claim 1, wherein an obtuse angle is formed by the housing, one end portion support, and the second surface of the reflector along the outer extremity of the optical semiconductor lighting apparatus.