LIGHTING APPARATUS

• US 20130148360A1
• Filed: 03/22/2012
• Published: 06/13/2013
• Est. Priority Date: 12/13/2011
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: JEON, Yongseog, Jeong, Jongkyo, Kwak, Jinsung, Kim, Yongjin
• Granted Patent: US 8,915,616 B2
• Time in Patent Office: Days
• US Class Current: 362/294
• CPC Class Codes: F21S 8/086 with lighting device attached sideways of the standard, e.g. for roads and highways
• CPC Class Codes: F21V 31/03 with provision for venting for vehicle head lights F21S45/33; for vehicle rear lights F21S41/192
• CPC Class Codes: F21W 2131/103 of streets or roads
• CPC Class Codes: F21Y 2115/10 Light-emitting diodes [LED]

Abstract

A lighting apparatus is disclosed. The lighting apparatus has a drain structure of guiding water introduced through an assembly clearance to discharge the water to the outside and improves waterproof performance.

Claims

1. A lighting apparatus comprising:

a light emitting unit including an LED module, a heat sink arranged at the rear of the LED module, and a light transmitting member arranged in front of the LED module;

a housing having a first opening in which the light transmitting member is located and a second opening in which the heat sink is located; and

an electronic module arranged within the housing to supply power to the LED module,

wherein water introduced into the housing through the second opening is discharged to the outside of the housing through a boundary portion between the light transmitting member and the first opening.

2. The lighting apparatus according to claim 1, wherein:

the heat sink includes a main body having a recess, and a plurality of radiation fins protruding from the rear part of the main body;

the LED module is disposed in the recess; and

the light transmitting member surrounds the recess.

3. The lighting apparatus according to claim 1, wherein the light transmitting members include a plurality of concentration lenses.

4. The lighting apparatus according to claim 2, wherein:

the housing includes a first space part in which the light emitting unit is arranged and a second space part in which the electronic module is arranged; and

a wall surrounding the electronic module is provided in the second space part.

5. The lighting apparatus according to claim 4, wherein water introduced into the second space part flows to a space between the wall and the housing.

6. The lighting apparatus according to claim 4, wherein the housing includes:

a first body on which the light emitting unit is arranged and the wall is provided; and

a second body surrounding the electronic module and arranged at a position opposite the wall.

7. The lighting apparatus according to claim 6, wherein the second body is rotatably mounted on the first body.

8. The lighting apparatus according to claim 6, wherein respective areas forming the first space part and the second space part of the first body are inclined in different directions.

9. The lighting apparatus according to claim 6, wherein a groove part into which a free terminal of the wall is inserted is formed on the second body.

10. The lighting apparatus according to claim 4, wherein the electronic module is arranged so as not to overlap with the first opening and the second opening.

11. The lighting apparatus according to claim 1, further comprising a cover member surrounding the second opening and provided with a plurality of flow holes.

12. The lighting apparatus according to claim 4, further comprising a cable electrically connecting the LED module of the light emitting unit and the electronic module,

wherein a first socket screw-connected to the heat sink is provided at one end of the cable.

13. The lighting apparatus according to claim 12, wherein the cable and the LED module are electrically connected within the heat sink.

14. The lighting apparatus according to claim 12, wherein:

a through hole is formed on the wall; and

a second socket screw-connected to the through hole is provided at the other end of the cable.

15. The lighting apparatus according to claim 4, further comprising:

a support member to locate the housing in a lighting space; and

a holder into which the support member is inserted, the holder being arranged within the housing.

16. The lighting apparatus according to claim 15, wherein the electronic module is electrically connected to an external power supply unit through a power cable passing through the holder and discharged to the outside.