Lighting device

• US 8,911,110 B2
• Filed: 01/06/2014
• Issued: 12/16/2014
• Est. Priority Date: 06/05/2009
• Status: Active Grant

• Current Assignee: Suzhou Lekin Semiconductor Company Limited
• Original Assignee: Dong Nyung Lim, Eun Hwan Kim
• Inventors: Lim, Dong Nyung, Kim, Eun Hwan
• Primary Examiner(s): TSO, LAURA K
• Application Number:
  US14/148,274
• Publication Number:
  US 20140126212A1
• Time in Patent Office: 344 Days
• Field of Search: 362/231, 362/249.02, 362/294, 362/249.11, 362/235, 362/311.02, 362/373, 362/267
• US Class Current: 362/249.02
• CPC Class Codes: F21S 45/47 Passive cooling, e.g. using fins, thermal conductive elements or openings
• CPC Class Codes: F21S 45/50 Waterproofing
• CPC Class Codes: F21V 15/01 Housings, e.g. material or assembling of housing parts F21V15/02 takes precedence housings forming signs or letters G09F13/04
• CPC Class Codes: F21V 27/00 Cable-stowing arrangements structurally associated with lighting devices, e.g. reels storing lengths of cable in general B65H; the lighting devices being vehicle headlamps F21S41/192; the lighting devices being vehicle lights F21S43/195
• CPC Class Codes: F21V 29/507 of means for protecting lighting devices from damage, e.g. housings
• CPC Class Codes: F21V 29/70 characterised by passive heat-dissipating elements, e.g. heat-sinks
• CPC Class Codes: F21V 29/89 Metals
• CPC Class Codes: F21V 31/005 Sealing arrangements therefor
• CPC Class Codes: F21V 5/04 of lens shape
• 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

A lighting device includes a light emitting module including a substrate and a light emitting device mounted on the substrate; a case body receiving the light emitting module; a gap member contacting the case body and wider than the substrate; a lens on the light emitting module and contacting the gap member; a first ring provided on a peripheral portion of the lens; and a case cover coupled with the case body and having an opening, wherein the case body is provided therein with a coupling cavity in which the gap member is seated, and wherein the lens includes a first portion between the ring and the gap member and a second portion that extends outward from the first portion through the opening of the case cover.

Claims

1. A lighting device, comprising:

a light emitting module including a substrate and a light emitting device mounted on the substrate;

a case comprising a body member including a cavity to receive the light emitting module, and a cover member including an opening, both of the body member and the cover member including a through-hole respectively so as to be coupled to each other by a coupling member;

an optical member having a shape corresponding to the opening of the cover member of the case to cover the opening of the cover member of the case; and

an intermediate member disposed in the cavity of the body member of the case,

wherein an area of the opening of the cover member of the case where a top surface of the body member of the case meets the cover member of the case is smaller than an area of a bottom surface of the cavity of the body member of the case on which the light emitting module is provided.

2. The lighting device according to claim 1, wherein the cover member of the case comprises a protrusion on a bottom surface, and

wherein the body member of the case comprises a recess beyond the cavity thereof such that the protrusion of the cover member of the case fits into the recess of the body member of the case.

3. The lighting device according to claim 2, further comprising a heat dissipation member disposed in the cavity of the body member of the case.

4. The lighting device according to claim 2, further comprising a sealing member to prevent a material from passing into the cavity of the body member of the case.

5. The lighting device according to claim 1, wherein the intermediate member contacts the body member and is wider than the substrate.

6. The lighting device according to claim 4, wherein the sealing member is provided on a peripheral portion of the optical member.

7. The lighting device according to claim 4, wherein the optical member includes a first portion disposed under the sealing member and a second portion that extends outward from the first portion through the opening of the cover member.

8. The lighting device according to claim 2, wherein the protrusion is disposed at a peripheral portion of the cover member.

9. The lighting device according to claim 1, wherein the cover member includes a screw groove, and

wherein a coupling screw is inserted into the screw groove to couple the cover member to the body member.

10. The lighting device according to claim 9, wherein the coupling screw is exposed to a top surface of the cover member.

11. A lighting device, comprising:

a light emitting module including a substrate and a light emitting device mounted on the substrate;

a case comprising a body member including a cavity to receive the light emitting module, and a cover member including an opening; and

an optical member including a shape corresponding to the opening of the cover member of the case to cover the opening of the cover member of the case,

wherein a protrusion is formed at one of the body member of the case and the cover member of the case, and a recess is formed at the corresponding position of the other such that both of the protrusion and the recess are coupled together,

wherein a width of the body member of the case is larger than a height of the body member, and

wherein an area of the opening of the cover member of the case where a top surface of the body member of the case meets the cover member of the case is smaller than an area of a bottom surface of the cavity of the body member of the case on which the light emitting module is disposed.

12. The lighting device according to claim 11, further comprising an intermediate member disposed in the cavity of the body member of the case.

13. The lighting device according to claim 11, further comprising a heat dissipation member disposed in the cavity of the body member of the case.

14. The lighting device according to claim 11, further comprising a sealing member to prevent a material from passing into the cavity of the body member of the case.

15. The lighting device according to claim 14, wherein the sealing member is provided on a peripheral portion of the optical member.

16. The lighting device according to claim 14, wherein the optical member includes a first portion disposed under the sealing member and a second portion that extends outward from the first portion through the opening of the cover member.

17. The lighting device according to claim 11, wherein the protrusion is disposed at a peripheral portion of the cover member.

18. The lighting device according to claim 11, wherein the cover member includes a screw groove, and

wherein a coupling screw is inserted into the screw groove to couple the cover member to the body member.

19. The lighting device according to claim 18, wherein the coupling screw is exposed to a top surface of the cover member.

20. A lighting device, comprising:

a light emitting module including a substrate and a light emitting device mounted on the substrate;

a case comprising a body member including a cavity to receive the light emitting module, and a cover member including an opening, both of the body member and the cover member including a through-hole respectively so as to be coupled to each other by a coupling member; and

an optical member having a shape corresponding to the opening of the cover member of the case to cover the opening of the cover member of the case;

wherein an area of the opening of the cover member of the case where a top surface of the body member of the case meets the cover member of the case is smaller than an area of a bottom surface of the cavity of the body member of the case on which the light emitting module is provided,

wherein the cover member of the case comprises a protrusion on a bottom surface, and

wherein the body member of the case comprises a recess beyond the cavity thereof such that the protrusion of the cover member of the case fits into the recess of the body member of the case.