Lighting apparatus and moving object

Patent metadata

Field	Value
Publication number	US-9969496-B2
Application number	US-201615017801-A
Country	US
Kind code	B2
Filing date	Feb 8, 2016
Priority date	Feb 12, 2015
Publication date	May 15, 2018
Grant date	May 15, 2018

Abstract

A lighting apparatus includes: a linear light source having an elongated shape; and an optical component which transmits light emitted from the linear light source. The optical component has an entrance surface where the light emitted from the linear light source enters and (ii) an exit surface where the light which has entered the entrance surface exits. The optical component includes, on the exit surface, a light diffuser row including a plurality of light diffusers which are arranged in a line. In a plan view of the exit surface, a first direction in which light-emitting elements included in the linear light source are arranged intersects with a second direction in which the light diffusers are arranged.

First claim

What is claimed is:

1. A lighting apparatus comprising:
a linear light source having an elongated shape, the linear light source including a plurality of light-emitting elements; and
an optical component that has a flat plate shape and which transmits light emitted from the linear light source, the optical component having (i) an entrance surface where the light emitted from the linear light source enters and (ii) an exit surface where the light which has entered the entrance surface exits, the exit surface being opposite to the entrance surface, the optical component including, on the exit surface, a light diffuser row including a plurality of light diffusers which are arranged in a line,
wherein, in a plan view of the exit surface, a first direction in which the plurality of light-emitting elements are arranged, intersects with a second direction, in which the plurality of light diffusers are arranged.

2. The lighting apparatus according to claim 1 ,
wherein an angle formed by the first direction and the second direction gradually increases from a first end of the linear light source toward a second end of the linear light source.

3. The lighting apparatus according to claim 1 ,
wherein the first direction is curved.

4. The lighting apparatus according to claim 1 ,
wherein the optical component includes a plurality of Fresnel grooves on the entrance surface.

5. The lighting apparatus according to claim 1 ,
wherein each of the plurality of light diffusers has a convex curved surface.

6. A moving object comprising
the lighting apparatus according to claim 1 .

7. The lighting apparatus according to claim 1 , the light diffuser row comprises a plurality of rows each including a plurality of light diffusers.

8. The lighting apparatus according to claim 1 , wherein the first direction and the second direction intersect at an angle of less than 90°.

9. The lighting apparatus according to claim 1 , wherein each of the plurality of light diffusers comprises an arcuate projection extending outwardly from the exit surface.

10. The lighting apparatus according to claim 9 , wherein each of the arcuate projections is discrete.

11. The lighting apparatus according to claim 1 , wherein the second direction is curved.

Assignees

• Panasonic Ip Man Co Ltd

Inventors

• Ohta Takashi
• Matsui Nobuyuki
• Hashimoto Naotaka

Classifications

• B64D11/00 Primary

  Passenger or crew accommodation; Flight-deck installations not otherwise provided for · CPC title

• B64D2011/0038

  Illumination systems for cabins as a whole · CPC title