Light-emitting apparatus and illuminating apparatus

• US 20060034084A1
• Filed: 06/28/2005
• Published: 02/16/2006
• Est. Priority Date: 06/28/2004
• Status: Abandoned Application

• Current Assignee: Kyocera Corporation
• Original Assignee: Kyocera Corporation
• Inventors: Sekine, Fumiaki, Matsuura, Shingo
• Application Number:
  US11/168,887
• Publication Number:
  US 20060034084A1
• Time in Patent Office: Days
• US Class Current: 362/293
• 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]
• CPC Class Codes: H01L 2224/48091 Arched
• CPC Class Codes: H01L 2924/00014 the subject-matter covered by the group, the symbol of which is combined with the symbol of this group, being disclosed without further technical details
• CPC Class Codes: H01L 33/507 the elements being in intimate contact with parts other than the semiconductor body or integrated with parts other than the semiconductor body
• CPC Class Codes: H01L 33/60 Reflective elements

Abstract

The light-emitting apparatus includes a light-emitting element, a base body having, on its upper principal surface, a placement portion for emplacing thereon the light-emitting element; a first reflecting member formed in a frame-like shape and attached to the upper principal surface of the base body so as to surround the placement portion; a second reflecting member formed in a frame-like shape and attached to the upper principal surface of the base body so as to surround the first reflecting member; a light transmitting member provided inside the second reflecting member so as to cover the light-emitting element and the first reflecting member; and a first wavelength-conversion layer for converting a wavelength of light from the light-emitting element, the first wavelength-conversion layer being provided inside the light transmitting member disposed above the light-emitting element, spaced from the first and second reflecting members.

Claims

1. A light-emitting apparatus comprising:

a light-emitting element;

a base body having, on its upper principal surface, a placement portion for emplacing thereon the light-emitting element;

a first reflecting portion formed in a frame-like shape and on the upper principal surface of the base body so as to surround the placement portion, having an inner peripheral surface serving as a light-reflecting surface;

a second reflecting portion formed in a frame-like shape and on the upper principal surface of the base body so as to surround the first reflecting portion, having an inner peripheral surface serving as a light-reflecting surface;

a light transmitting member provided inside the second reflecting portion so as to cover the light-emitting element and the first reflecting portion; and

a first wavelength-conversion portion for converting a wavelength of light from the light-emitting element, the first wavelength-conversion portion being provided inside or on a surface of the light transmitting member disposed above the light-emitting element, spaced from the first and second reflecting portions.

2. The light-emitting apparatus of claim 1, wherein the second reflecting portions has, on its inner peripheral surface, a second wavelength-conversion portion for converting the wavelength of the light from the light-emitting element.

3. The light-emitting apparatus of claim 1, wherein the first wavelength-conversion portion is so positioned that its outer periphery is on a side of the second reflecting portion with respect to a line that runs from an edge of the light-emitting element to an upper edge of the inner peripheral surface of the first reflecting portion opposite to the edge of the light-emitting element.

4. The light-emitting apparatus of claim 2, wherein the second wavelength-conversion portion is so formed that its thickness gradually increases from its upper end to its lower end.

5. The light emitting apparatus of claim 2, wherein the second wavelength-conversion portion contains a phosphor material for converting the wavelength of the light from the light-emitting element, and is so formed that the density of the phosphor material therein gradually increases from the upper end to the lower end of the second wavelength-conversion portion.

6. The light-emitting apparatus of claim 2, wherein the second wavelength-conversion portion is so formed that its inner surface has plural recesses or protrusions.

7. The light-emitting apparatus of claim 1, wherein a height of the placement portion protrudes higher than a lower edge of the inner peripheral surface of the first reflecting portion.

8. An illuminating apparatus constructed by setting up the light-emitting apparatus of claim 1 in a predetermined arrangement.

9. A light-emitting apparatus comprising:

a light-emitting element;

a tabular base body;

a first reflecting portion formed on an upper principal surface of the base body, having, on its upper surface, a placement portion for emplacing the light-emitting element and a side wall portion including an inner peripheral surface serving as a light-reflecting surface, the side wall portion being formed so as to surround the placement portion;

a second reflecting portion formed in a frame-like shape and on the upper principal surface of the base body so as to surround the first reflecting portion, having an inner peripheral surface serving as a light-reflecting surface;

a light transmitting member provided inside the second reflecting portion so as to cover the light-emitting element and the first reflecting portion; and

a first wavelength-conversion portion for converting a wavelength of light from the light-emitting element, the first wavelength-conversion portion being provided inside or on a surface of the light transmitting member disposed above the light-emitting element, spaced from the first and second reflecting portions.

10. The light-emitting apparatus of claim 9, wherein the second reflecting portions has, on its inner peripheral surface, a second wavelength-conversion portion for converting the wavelength of the light from the light-emitting element.

11. The light-emitting apparatus of claim 9, wherein the first wavelength-conversion portion is so positioned that its outer periphery is on a side of the second reflecting portion with respect to a line that runs from an edge of the light-emitting element to an upper edge of the inner peripheral surface of the first reflecting portion opposite to the edge of the light-emitting element.

12. The light-emitting apparatus of claim 10, wherein the second wavelength-conversion portion is so formed that its thickness gradually increases from its upper end to its lower end.

13. The light emitting apparatus of claim 10, wherein the second wavelength-conversion portion contains a phosphor material for converting the wavelength of the light from the light-emitting element, and is so formed that the density of the phosphor material therein gradually increases from the upper end to the lower end of the second wavelength-conversion portion.

14. The light-emitting apparatus of claim 10, wherein the second wavelength-conversion portion is so formed that its inner surface has plural recesses or protrusions.

15. The light-emitting apparatus of claim 9, wherein a height of the placement portion protrudes higher than a lower edge of the inner peripheral surface of the first reflecting portion.

16. An illuminating apparatus constructed by setting up the light-emitting apparatus of claim 9 in a predetermined arrangement.

17. A light-emitting apparatus comprising:

a light-emitting-element;

a base body having, on its upper principal surface, a placement portion for emplacing thereon the light-emitting element;

a first reflecting portion formed in a frame-like shape and on the upper principal surface of the base body so as to surround the placement portion, having an inner peripheral surface serving as a light-reflecting surface;

a second reflecting portion formed in a frame-like shape and on the upper principal surface of the base body so as to surround the first reflecting portion, having an inner peripheral surface serving as a light-reflecting surface;

a light transmitting member provided inside the second reflecting portion so as to cover the light-emitting element and the first reflecting portion;

a light-reflecting portion for reflecting light from the light-emitting element, the light-reflecting portion being provided inside or on a surface of the light transmitting member disposed above the light-emitting element, spaced from the first and second reflecting portions; and

a wavelength-conversion portion formed on the inner peripheral surface of the second reflecting portion so as to convert the wavelength of the light from the light-emitting element.

18. The light-emitting apparatus of claim 17, wherein the light-reflecting portion is so positioned that its outer periphery is on a side of the second reflecting portion with respect to a line that runs from an edge of the light-emitting element to an upper edge of the inner peripheral surface of the first reflecting portion opposite to the edge of the light-emitting element.

19. The light-emitting apparatus of claim 17, wherein the light-reflecting portion has a light-scattering surface facing the light-emitting element.

20. The light-emitting apparatus of claim 17, wherein the wavelength-conversion portion is so formed that its thickness gradually increases from its upper end to its lower end.

21. The light-emitting apparatus of claim 17, wherein the wavelength-conversion portion contains a phosphor material for converting the wavelength of the light from the light-emitting element, and is so formed that the density of the phosphor material therein gradually increases from the upper end to the lower end of the wavelength-conversion portion.

22. The light-emitting apparatus of claim 17, wherein the wavelength-conversion portion is so formed that its inner surface has plural recesses or protrusions.

23. The light-emitting apparatus of claim 17, wherein a height of the placement portion protrudes higher than a lower edge of the inner peripheral surface of the first reflecting portion.

24. An illuminating apparatus constructed by setting up the light-emitting apparatus of claim 17 in a predetermined arrangement.

25. A light-emitting apparatus comprising:

a light-emitting element;

a tabular base body;

a first reflecting portion formed on an upper principal surface of the base body, having, on its upper surface, a placement portion for emplacing the light-emitting element and a side wall portion including an inner peripheral surface serving as a light-reflecting surface, the side wall portion being formed so as to surround the placement portion;

a second reflecting portion formed in a frame-like shape and on the upper principal surface of the base body so as to surround the first reflecting portion, having an inner peripheral surface serving as a light-reflecting surface;

a light transmitting member provided inside the second reflecting portion so as to cover the light-emitting element and the first reflecting portion;

a light-reflecting portion for reflecting light from the light-emitting element, the light-reflecting portion being provided inside or on a surface of the light transmitting member disposed above the light-emitting element, spaced from the first and second reflecting portions; and

a wavelength-conversion portion formed on the inner peripheral surface of the second reflecting portion so as to convert the wavelength of the light from the light-emitting element.

26. The light-emitting apparatus of claim 25, wherein the light-reflecting portion is so positioned that its outer periphery is on a side of the second reflecting portion with respect to a line that runs from an edge of the light-emitting element to an upper edge of the inner peripheral surface of the first reflecting portion opposite to the edge of the light-emitting element.

27. The light-emitting apparatus of claim 25, wherein the light-reflecting portion has a light-scattering surface facing the light-emitting element.

28. The light-emitting apparatus of claim 25, wherein the wavelength-conversion portion is so formed that its thickness gradually increases from its upper end to its lower end.

29. The light-emitting apparatus of claim 25, wherein the wavelength-conversion portion contains a phosphor material for converting the wavelength of the light from the light-emitting element, and is so formed that the density of the phosphor material therein gradually increases from the upper end to the lower end of the wavelength-conversion portion.

30. The light-emitting apparatus of claim 25, wherein the wavelength-conversion portion is so formed that its inner surface has plural recesses or protrusions.

31. The light-emitting apparatus of claim 25, wherein a height of the placement portion protrudes higher than a lower edge of the inner peripheral surface of the first reflecting portion.

32. An illuminating apparatus constructed by setting up the light-emitting apparatus of claim 25 in a predetermined arrangement.