LIGHT EMITTING DIODE CUP LAMP

• US 20120175655A1
• Filed: 09/23/2011
• Published: 07/12/2012
• Est. Priority Date: 01/06/2011
• Status: Abandoned Application

• Current Assignee: Lextar Electronics Corporation (Ennostar, Inc.)
• Original Assignee: Lextar Electronics Corporation (Ennostar, Inc.)
• Inventors: Hsieh, Chin-Kun, Cheng, Chi-Chen, Lu, Wen-Cheng
• Application Number:
  US13/242,222
• Publication Number:
  US 20120175655A1
• Time in Patent Office: Days
• US Class Current: 257/98
• CPC Class Codes: F21K 9/20 Light sources comprising attachment means
• CPC Class Codes: F21K 9/68 Details of reflectors forming part of the light source
• CPC Class Codes: F21K 9/69 Details of refractors forming part of the light source
• CPC Class Codes: F21V 13/04 the elements being reflectors and refractors for vehicle rear lights F21S43/40
• CPC Class Codes: F21V 19/004 by deformation of parts or snap action mountings, e.g. using clips
• 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 29/83 the elements having apertures, ducts or channels, e.g. heat radiation holes
• CPC Class Codes: F21V 5/04 of lens shape
• CPC Class Codes: F21V 7/0033 with successive reflections from one reflector to the next or following
• CPC Class Codes: F21V 7/0091 using total internal reflection
• CPC Class Codes: F21Y 2115/10 Light-emitting diodes [LED]
• CPC Class Codes: G02B 19/0028 refractive and reflective surfaces, e.g. non-imaging catadioptric systems
• CPC Class Codes: G02B 19/0061 the light source comprising a LED semiconductor devices with at least one potential-jump barrier or surface barrier specially adapted for light emission H01L33/00
• CPC Class Codes: H01L 33/58 Optical field-shaping elements

Abstract

A light emitting diode (LED) cup lamp including a base, an LED light source and a light guiding device is disclosed. The LED light source is disposed on the base. The light guiding device is disposed above the LED light source. The light guiding device has a light guiding region facing the LED light source. After the light emitted from the LED light source is guided through the light guiding region, the light is further guided by other parts of the light guiding device so that the light is emitted towards the exterior of the LED cup lamp.

Claims

1. A light emitting diode (LED) cup lamp, comprising:

a base;

an LED light source disposed on the base; and

a light guiding device disposed above the LED light source, wherein the light guiding device has a light guiding region facing the LED light source, and after the light emitted from the LED light source is guided through the light guiding region, the light is further guided by other parts of the light guiding device so that the light is emitted towards the exterior of the LED cup lamp.

2. The LED cup lamp according to claim 1, wherein the light guiding device comprises:

a lens; and

a light guiding element disposed adjacent to the lens, wherein the light guiding element faces the LED light source, and the locating region of the light guiding element defines the light guiding region.

3. The LED cup lamp according to claim 2, wherein after the light emitted from the LED light source is reflected by the light guiding element and then emitted to the lens, the light is guided by the lens to be emitted towards the exterior of the LED cup lamp.

4. The LED cup lamp according to claim 2, wherein the lens has a recess with a bottom side and the light guiding element is disposed on the bottom side.

5. The LED cup lamp according to claim 4, wherein the bottom side is a concave surface protruded downwards.

6. The LED cup lamp according to claim 4, wherein the bottom side is a planar surface.

7. The LED cup lamp according to claim 4, wherein the bottom side is a convex surface.

8. The LED cup lamp according to claim 1, wherein the light guiding device comprises:

a lens;

a light guiding film disposed adjacent to the lens, wherein the light guiding film faces the LED light source, and the locating region of the light guiding film defines the light guiding region.

9. The LED cup lamp according to claim 8, wherein the light guiding film is coated on the lens.

10. The LED cup lamp according to claim 8, wherein after the light emitted from the LED light source is reflected by the light guiding film and then emitted to the lens, the light is guided by the lens to be emitted towards the exterior of the LED cup lamp.

11. The LED cup lamp according to claim 8, wherein the lens has a recess with a bottom side and the light guiding film is disposed on the bottom side.

12. The LED cup lamp according to claim 11, wherein the bottom side is a concave surface protruded downwards.

13. The LED cup lamp according to claim 11, wherein the bottom side is a planar surface.

14. The LED cup lamp according to claim 11, wherein the bottom side is a convex surface.

15. The LED cup lamp according to claim 1, wherein the base comprises a frame and a carrier, the frame surrounds and couples the peripheral of the carrier, the carrier has an aperture and the LED cup lamp further comprises:

a substrate disposed on the carrier of the base, wherein the LED light source is disposed on the substrate;

a fixing structure pressing on the substrate and engaged on the bottom side of the carrier of the base via the aperture.

16. The LED cup lamp according to claim 15, wherein the fixing structure comprise:

a pressure plate pressing on the substrate; and

a plurality of hooks coupled to the pressure plate, wherein the hooks are extended from the pressure plate and passes through the aperture to be engaged on the bottom side of the carrier.

17. The LED cup lamp according to claim 1, wherein the substrate comprises:

a first plate disposed on the carrier of the base; and

a second plate disposed on the first plate, wherein the LED light source is embedded into the second plate, and the pressure plate presses on the first plate and surrounds the peripheral of the second plate.

18. The LED cup lamp according to claim 17, wherein the outer side-wall of the second plate has a protrusion portion, and the inner side-wall of the pressure plate has a gap in which the protrusion portion is received.

19. The LED cup lamp according to claim 17, wherein the bottom side of the pressure plate has an indentation, and the substrate further comprises:

an electrical pad disposed on the first plate, wherein the location of the electrical pad corresponds to that of the indentation; and

a wire whose one end is connected to the electrical pad and located in the indentation.

20. The LED cup lamp according to claim 16, wherein the frame has an accommodation recess interconnecting with the aperture and the hooks are received in the accommodation recess.

21. The LED cup lamp according to claim 16, wherein the fixing structure comprises two hooks.

22. The LED cup lamp according to claim 21, wherein the hooking portions of the two hooks are facing opposite directions.

23. The LED cup lamp according to claim 15, wherein the base is made of metal, plastic or composite material.

24. The LED cup lamp according to claim 15, wherein the fixing structure is made of metal, plastic or composite material.

25. The LED cup lamp according to claim 15, further comprising:

a thermo-conductive insulation layer disposed between the substrate and the carrier of the base.