Light-emitting module and lighting apparatus

Patent metadata

Field	Value
Publication number	US-9416948-B2
Application number	US-201414337348-A
Country	US
Kind code	B2
Filing date	Jul 22, 2014
Priority date	Jul 26, 2013
Publication date	Aug 16, 2016
Grant date	Aug 16, 2016

Abstract

A light-emitting module includes: a board; and a plurality of light sources arranged in a two-dimensional array on the board and including a plurality of color temperatures. In a first direction of the two-dimensional array, light sources having a uniform color temperature are successively arranged. The number of light sources having a uniform color temperature and successively arranged in each array line in the first direction is less than or equal to half of the total number of light sources in the array line in the first direction.

First claim

The invention claimed is:

1. A light-emitting module comprising:
a board;
a plurality of light sources arranged in a two-dimensional array on the board, each of the light sources having either a first color temperature or a second color temperature of a white light, and
a plurality of electrical lines for connecting light sources that have a uniform color temperature
wherein among the plurality of light sources, light sources having a uniform color temperature are successively arranged in an array line extending in a first direction of the two-dimensional array,
the electrical lines connect light sources that belong to different array lines, and are inclined in a same direction in a planar view of the board, the inclined electrical lines reduce distances between adjacent light sources of different array lines and
a number of the light sources having a uniform color temperature and successively arranged in each array line in the first direction is less than or equal to half of a total number of light sources arranged in the each array line in the first direction.

2. The light-emitting module according to claim 1 ,
wherein a number of light sources having a uniform color temperature and successively arranged in each array line in a second direction of the two-dimensional array is less than or equal to a half of a total number of light sources arranged in the each array line in the second direction, the second direction being perpendicular to the first direction.

3. The light-emitting module according to claim 2 ,
wherein among the plurality of light sources, three or more light sources having a uniform color temperature are successively arranged only in the first direction.

4. The light-emitting module according to claim 2 ,
wherein the number of the light sources having a uniform color temperature and successively arranged in each of the first direction and in the second direction is at most two.

5. The light-emitting module according to claim 1 ,
wherein each of the plurality of light sources includes:
a solid-state light-emitting element mounted at an intersection between a vertical direction and a horizontal direction of the two-dimensional array; and
a sealing component which seals the solid-state light-emitting element and includes a wavelength converting material for converting a wavelength of light emitted from the solid-state light-emitting element.

6. The light-emitting module according to claim 5 ,
wherein the sealing component is provided at the intersection in one-to-one correspondence with the solid-state light-emitting element.

7. The light-emitting module according to claim 5 ,
wherein the solid-state light-emitting device is mounted at a portion other than a center of a light-emitting region, the light-emitting region being an entire region including all of the plurality of light sources.

8. The light-emitting module according to claim 5 , further comprising
a lens for focusing light emitted from the plurality of light sources,
wherein none of the plurality of light sources is arranged at a focal point of the lens.

9. A lighting apparatus comprising
the light-emitting module according to claim 1 .

10. The light-emitting module according to claim 1 ,
wherein a first set of light sources having the first color temperature are adjacently aligned with one another in the first direction, and a second set of light sources having the second color temperature are adjacently aligned with one another in the first direction.

11. The light-emitting module according to claim 10 ,
wherein the first set of light sources are alternately arranged with the second set of light sources in the first direction.

12. The light-emitting module according to claim 11 ,
wherein the first set of light sources and the second set of light sources are alternately arranged in a same array line.

Assignees

• Panasonic Corp
• Panasonic Ip Man Co Ltd

Inventors

• Nakamura Kyohei
• Yamamoto Yuuya
• Murakami Tadashi

Classifications

• F21Y2105/12

  characterised by the geometrical disposition of the light-generating elements, e.g. arranging light-generating elements in differing patterns or densities · CPC title

• F21Y2115/10

  Light-emitting diodes [LED] · CPC title

• H10W74/00

  Encapsulations, e.g. protective coatings · CPC title

• H10W72/07554

  changes in dispositions · CPC title

• H10W72/884

  Die-attach connectors and bond wires · CPC title