OPTICAL SEMICONDUCTOR LIGHTING APPARATUS

• US 20120033419A1
• Filed: 08/05/2011
• Published: 02/09/2012
• Est. Priority Date: 08/06/2010
• Status: Abandoned Application

• 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
• Application Number:
  US13/198,963
• Publication Number:
  US 20120033419A1
• Time in Patent Office: Days
• US Class Current: 362/235
• 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 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, and wherein 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.

2. The optical semiconductor lighting apparatus of claim 1, further comprising:

a heat sink dissipating heat generated by the light source module, and the heat sink, comprising;

is a base plate having a vent forming the moving path; and

a heat dissipation protrusion protruding from the base plate.

3. The optical semiconductor lighting apparatus of claim 1, wherein the light source module comprises:

a printed circuit board having a vent forming the moving path; and

at least one optical semiconductor element mounted on the printed circuit board.

4. The optical semiconductor lighting apparatus of claim 3, wherein the vent comprises:

a middle vent formed at a center region of the printed circuit board; and

a peripheral vent formed at a peripheral region of the printed circuit board.

5. The optical semiconductor lighting apparatus of claim 4, wherein the peripheral vent is slantly formed along an inner side face of the reflector.

6. The optical semiconductor lighting apparatus of claim 1, wherein the housing comprises an outer vent formed adjacent to the reflector, a portion of the air drawn into the housing by the fan externally being blown toward the reflector through the outer vent.

7. The optical semiconductor lighting apparatus of claim 6, wherein the outer vent is slantly formed along an outer side face of the reflector.

8. The optical semiconductor lighting apparatus of claim 1, further comprising a dust collecting module disposed upon the reflector.

9. The optical semiconductor lighting apparatus of claim 1, further comprising a lighting control section controlling the fan and the light source module.

10. The optical semiconductor lighting apparatus of claim 9, wherein the lighting control section operably controls the light source module for indicating a breakdown condition.

11. The optical semiconductor lighting apparatus of claim 9, wherein the lighting control section controls the fan to rotate a second direction that is opposite to the first direction for removing dust of ambient air inlet of the housing.

12. The optical semiconductor lighting apparatus of claim 1, wherein the housing comprises:

a case body with an open upper portion and an open lower portion, the case body receiving the fan and the light source module; and

an upper cover combined with the case body to cover the upper portion of the case body.

13. The optical semiconductor lighting apparatus of claim 12, wherein the upper cover has an ambient air inlet through which ambient air flows into the housing.

14. The optical semiconductor lighting apparatus of claim 12, wherein the upper cover is separated from an upper end of the case body to form a peripheral inlet through which ambient air flows into the housing.

15. The optical semiconductor lighting apparatus of claim 12, the case body has a plurality of stripe protrusions or a plurality of stripe grooves formed on an outer side face of the case body.

16. An optical semiconductor lighting apparatus comprising:

a housing having an open end;

a light source module including at least one optical semiconductor element;

a fan disposed adjacent to the light source module in the housing, the fan flowing ambient air toward the light source module; and

a reflector enhancing an illumination scope of light generated by the light source, and wherein at least a lower portion of the housing is separated from an outer side face of the reflector to blow a portion of the ambient air toward an outer surface of the reflector.

17. The optical semiconductor lighting apparatus of claim 16, wherein the lower portion of the housing is disposed such that the lower portion of the housing is separated from the outer side face of the reflector and overlapped with the outer side face of the reflector.

18. The optical semiconductor lighting apparatus of claim 16, wherein the lower portion of the housing is modified to have such a shape that a portion of the ambient air that is drawn in and then blown out by the fan is concentrated on the outer side face of the reflector and moved by strong pressure.

19. The optical semiconductor lighting apparatus of claim 18, wherein the lower portion of the housing, which overlaps with the reflector, protrudes outward.

20. The optical semiconductor lighting apparatus of claim 18, wherein at least a portion of the lower portion of the housing overlaps with the reflector and a distance between the portion and the reflector decreases along a downward direction of the reflector.