Lighting device

• US 8,449,138 B2
• Filed: 08/19/2010
• Issued: 05/28/2013
• Est. Priority Date: 08/19/2009
• Status: Active Grant

• Current Assignee: Suzhou Lekin Semiconductor Company Limited
• Original Assignee: LG Innotek Company Limited (LG Corporation)
• Inventors: Kim, Kwang Soo, Kong, Kyung Il, Kim, Hwayoung, Hong, Sang Jun
• Primary Examiner(s): Lee, Jong-suk (James)
• Assistant Examiner(s): MACCHIAROLO, LEAH SIMONE
• Application Number:
  US12/805,798
• Publication Number:
  US 20110043132A1
• Time in Patent Office: 1,013 Days
• Field of Search: 362/217.13, 362/247, 362/238, 362/296.01, 362/297, 362/306, 362/235, 362/217.17, 362/220, 362/217.05, 362/217.06, 362/408, 439/220, 439/537
• US Class Current: 362/217.13
• CPC Class Codes: F21K 9/20 Light sources comprising attachment means
• CPC Class Codes: F21S 8/026 intended to be recessed in a ceiling or like overhead structure, e.g. suspended ceiling
• CPC Class Codes: F21S 8/033 the surface being a wall or like vertical structure, e.g. building facade
• CPC Class Codes: F21S 8/04 intended only for mounting on a ceiling or the like overhead structures F21S8/02 takes precedence; details of ceiling bases F21V21/03
• CPC Class Codes: F21V 13/08 the elements being filters or photoluminescent elements and reflectors
• CPC Class Codes: F21V 17/162 the parts being subjected to traction or compression, e.g. coil springs
• CPC Class Codes: F21V 19/004 by deformation of parts or snap action mountings, e.g. using clips
• CPC Class Codes: F21V 23/0442 activated by means of a sensor, e.g. motion or photodetectors
• CPC Class Codes: F21V 7/00 Reflectors for light sources characterised by cooling arrangements F21V29/505
• CPC Class Codes: F21V 7/0008 providing for indirect lighting
• CPC Class Codes: F21V 7/005 with an elongated shape to cooperate with linear light sources
• CPC Class Codes: F21Y 2103/10 comprising a linear array of point-like light-generating elements
• CPC Class Codes: F21Y 2115/10 Light-emitting diodes [LED]

Abstract

A lighting device including a housing, a coupling member being coupled to an inner upper surface of the housing, having an insertion groove formed in the middle part thereof in a direction of the inner upper surface of the housing, and having a first connection terminal provided in the middle of the insertion groove, at least one reflector coupled between an inner wall surface of the housing and an outer wall surface of the coupling member; and a light source unit having an upper part thereof attachable to and removable from the coupling member by using the insertion groove, having a second connection terminal provided in the upper part thereof, the second connection terminal being electrically connected to the first connection terminal when connected to the coupling member, and having a lower part thereof emitting light toward the reflector.

Claims

1. A lighting device comprising:

a housing;

a coupling member disposed on the housing, having an insertion recess and a first connection terminal disposed in the insertion recess;

at least one reflector disposed between the housing and the coupling member; and

a light source unit coupled to the coupling member and including a second connection terminal electronically connected to the first connection terminal,

wherein the first connection terminal comprises a first connector and a second connector, and wherein the second connection terminal comprises a first socket and a second socket.

2. The lighting device of claim 1, wherein the first connection terminal comprises n number of connectors (n is equal to or greater than 3), and wherein, in the n number of the connectors, a polarity of a first connector and a polarity of a n^th connector are the same as each other.

3. The lighting device of claim 1, further comprising a power supply unit disposed in a space between the at least one reflector and a corner inside the housing, and providing at least one of electric power and a driving signal to the light source unit when the light source unit is coupled to the coupling member.

4. The lighting device of claim 1, wherein at least one first recess is formed on an outer wall surface of the coupling member, and wherein at least one second recess is formed on an inner wall surface of the housing, and wherein a first side of the at least one reflector is attachable to and removable from the inner wall surface of the housing by using the at least one second recess, and wherein a second side of the at least one reflector is attachable to and removable from the outer wall surface of the coupling member by using the at least one first recess.

5. The lighting device of claim 1, wherein the first connection terminal comprises a female block, and wherein the female block includes the first connector and the second connector.

6. A lighting device comprising:

a housing;

a coupling member disposed in the housing, having an insertion recess and a first connection terminal;

at least one reflector disposed between the housing and the coupling member; and

a light source unit coupled to the coupling member, including a second connection terminal electronically connected to the first connection terminal and having a light emitting device,

wherein the light source unit comprises a first body and a second body, wherein the first body comprises a first coupling unit and a first sloping surface,

wherein the second body comprises a second coupling unit and a second sloping surface, wherein the light emitting device is disposed on at least one of the first sloping surface and the second sloping surface, and wherein the first coupling unit and the second coupling unit are coupled to the coupling member, and

wherein the light source unit comprises a middle body disposed between the first body and the second body and the light emitting device mounted on the first sloping surface and the second sloping surface.

7. The lighting device of claim 6, wherein at least one first recess is formed on an outer wall surface of the coupling member, and wherein at least one second recess is formed on an inner wall surface of the housing, and wherein a first side of the reflector is attachable to and removable from the inner wall surface of the housing by using the second recess, and wherein a second side of the reflector is attachable to and removable from the outer wall surface of the coupling member by using the first recess.

8. The lighting device of claim 6, further comprising a power supply unit disposed in a space between the reflector and a corner inside the housing, and providing at least one of electric power and a driving signal to the light source unit when the light source unit is coupled to the coupling member.

9. The lighting device of claim 6, wherein the first connection terminal comprises at least one pair of female blocks disposed in the middle part of the insertion recess, and wherein at least one pair of terminals are formed respectively in the one pair of the female blocks, and wherein at least one pair of the terminals formed in one female block among the one pair of the female blocks has a symmetric structure and a symmetric polarity with respect to those of at least one pair of the terminals formed in the other female block, and wherein the second connection terminal comprises at least one pair of male blocks provided in correspondence with the one pair of the female blocks, and wherein at least one pair of sockets are formed respectively on the one pair of the male blocks such that the sockets is in correspondence with and are electrically connected to at least the one pair of the terminals formed respectively in the one pair of the female blocks.

10. The lighting device of claim 6, wherein the first connection terminal comprises a first female block and a second female block, and wherein a pair of a first terminal and a second terminal and another pair of a third terminal and a fourth terminal are formed in the first female block, and wherein a pair of a fifth terminal and a sixth terminal and another pair of a seventh terminal and an eighth terminal are formed in the second female block, and wherein the second connection terminal comprises a first male block and a second male block, and wherein a pair of a first socket and a second socket and another pair of a third socket and a fourth socket are formed on the first male block, and wherein a pair of a fifth socket and a sixth socket and another pair of a seventh socket and an eighth socket are formed on the second male block, and wherein the first terminal and the second terminal comprise a first polarity and a second polarity respectively, and wherein the seventh terminal and the eighth terminal comprise the second polarity and the first polarity respectively, and wherein the third terminal and the fourth terminal comprise the first polarity and the second polarity respectively, and wherein the fifth terminal and the sixth terminal comprise the second polarity and the first polarity respectively.

11. The lighting device of claim 6, wherein the first coupling unit is formed in an upper part of the first body, the first sloping surface is formed in the a lower part of the first body, wherein the first coupling unit is attachable to and removable from the coupling member by using the insertion recess,

wherein the second coupling unit is formed in an upper part of the second body, the second sloping surface is formed in the a lower part of the second body, wherein the second coupling unit is attachable to and removable from the coupling member by using the insertion recess,

wherein the second connection terminal is formed in the middle body.

12. The lighting device of claim 11, further comprising a limit switch disposed on both sides of the middle body, connecting and disconnecting electric power supplied to a plurality of the light emitting diodes in accordance with an approach distance between the first body and the middle body and in accordance with an approach distance between the second body and the middle body.

13. The lighting device of claim 11, wherein the light source unit further comprises a spring disposed between the first body and the second body, and providing an elastic force to the first body and the second body, the elastic force widening a space between the first body and the second body.

14. The lighting device of claim 11, further comprising a coupling cap disposed at at least one end of both ends of each of the first body, the second body and the middle body, being attachable to or removable from the first body, the middle body and the second body, and coupling the first body and the second body to each other to rotate such that a spaced distance between the first body and the middle body and a spaced distance between the second body and the middle body can be changed.

15. The lighting device of claim 11, wherein the first body comprises a first light emitting recess using the first sloping surface as a basal surface, and wherein the second body comprises a second light emitting recess using the second sloping surface as a basal surface, and wherein a plurality of light emitting diodes is provided in the first light emitting recess along the first sloping surface, and wherein a plurality of light emitting diodes is provided in the second light emitting recess along the second sloping surface, and wherein the first light emitting recess and the second light emitting recess comprise a projection part formed in the first light emitting recess and the second light emitting recess respectively, the projection part blocking the light emitted directly from the plurality of the light emitting diodes to the outside of the housing.

16. The lighting device of claim 11, wherein a plurality of third recesses are formed on an inner wall surface of the insertion recess, and wherein projections are formed in an upper part of the first coupling unit and in an upper part of the second coupling unit, and wherein the projections are inserted into the third recesses so that the light source unit is coupled to the coupling member.

17. The lighting device of claim 11, wherein, when the first coupling unit and the second coupling unit are coupled to the coupling member, there is a contact surface formed by causing the coupling unit to be contact with the insertion recess in order to transfer heat generated from the light source unit to the coupling unit.

18. A lighting device comprising:

a housing;

a coupling member disposed on the housing, having a first connection terminal;

a reflector disposed between the housing and the coupling member; and

a light source unit coupled to the coupling member and including a second connection terminal electronically connected to the first connection terminal,

wherein the first connection terminal comprises an n number of connectors, and

wherein a polarity of a first connector and a polarity of an n^th connector, of the n number of connectors, are the same,

wherein the second connection terminal comprises an n number of sockets, and wherein the n number of the sockets one-to-one correspond to the n number of the connectors, a pair of the sockets and the connectors corresponding to each other have the same polarity.

19. The lighting device of claim 18, wherein the light source unit comprises a first body and a second body.