Light-emitting device and mobile object

Patent metadata

Field	Value
Publication number	US-9851076-B2
Application number	US-201514739365-A
Country	US
Kind code	B2
Filing date	Jun 15, 2015
Priority date	Jun 30, 2014
Publication date	Dec 26, 2017
Grant date	Dec 26, 2017

Abstract

A light-emitting device includes: a holder having an elongate shape and flexibility; and a flat light-emitting element held by the holder and having a rectangular shape and flexibility. The holder includes a frame portion extending in a longitudinal direction of the holder, and a holding part protruding from the frame portion in a plan view. The frame portion of the holder and the flat light-emitting element overlap in a lateral-view direction, and the flat light-emitting element is joined to and held by the holding part.

First claim

What is claimed is:

1. A light-emitting device comprising:
a holder having an elongate shape and flexibility; and
a flat light-emitting element held by the holder and having a rectangular shape and flexibility, the flat light-emitting element comprising:
a pair of substrates;
a pair of electrodes disposed between the pair of substrates and electrically connected to an anode and cathode;
an extraction electrode extracted from each electrode of the pair of electrodes; and
a light-emitting layer disposed between the pair of electrodes; wherein:

the holder includes a frame extending in a longitudinal direction of the holder in a plan view, and a beam protruding from the frame and extending across the top of the light emitting layer in a latitudinal direction of the holder in a plan view and wherein the beam is configured to supply power to the flat light-emitting element via power supply units disposed on the beam,
the frame of the holder and the beam overlap the light emitting element in an orthogonal direction in a plan view,
the flat light-emitting element is joined to the frame and beam by a plurality of holding pieces, and
the extraction electrodes are electrically and mechanically connected to the power supply units in a region where the power supply units and the flat light-emitting element are joined together.

2. The light-emitting device according to claim 1 , wherein:
the beam comprises at least two beams each configured to supply power to the flat light-emitting element,
the extraction electrode is disposed on both end portions of the flat light-emitting element in the longitudinal direction, and
the extraction electrode and the beam are joined together in one-to-one correspondence.

3. The light-emitting device according to claim 1 ,
wherein the extraction electrode is disposed on a center portion of the flat light-emitting element in the longitudinal direction.

4. The light-emitting device according to claim 1 , wherein:
the beam is formed integrally with the frame, and
the beam holds the flat light-emitting element.

5. The light-emitting device according to claim 4 ,
wherein the beam holds an intermediate section of the flat light-emitting element in the longitudinal direction.

6. The light-emitting device according to claim 1 ,
wherein the holder has a shape of a rectangular frame.

7. The light-emitting device according to claim 1 , further comprising
a first cover which is transmissive and covers one face of the flat light-emitting element.

8. The light-emitting device according to claim 7 , further comprising
a second cover which covers an other face of the flat light-emitting element.

9. The light-emitting device according to claim 8 ,
wherein the first cover covers both of the flat light-emitting element and the holder, and
includes a tab which holds the frame.

10. The light-emitting device according to claim 9 ,
wherein an engage opening for engaging the tab is defined in the second cover.

11. The light-emitting device according to claim 10 , wherein:
the tab comprises a plurality of tabs positioned along the longitudinal direction of the holder,
the engage opening comprises a plurality of engage openings positioned along the longitudinal direction of the holder, and
a longitudinal length of each engage opening of the plurality of engage openings positioned at end portions of the second cover in the longitudinal direction is greater than a longitudinal length of the engage opening of the plurality of engage openings positioned at a center portion of the second cover in the longitudinal direction.

12. The light-emitting device according to claim 7 ,
wherein the holder includes a tab which holds the first cover, and
the tab is disposed on the frame.

13. The light-emitting device according to claim 12 ,
wherein the tab is disposed on a center portion of the frame in the longitudinal direction.

14. The light-emitting device according to claim 1 ,
wherein the holder has a shape which allows holding of a plurality of the flat light-emitting elements along the longitudinal direction of the holder.

15. A mobile object comprising
the light-emitting device according to claim 1 ,
wherein the light-emitting device is attached to a curved portion in or outside a room, with the holder and the flat light-emitting element being curved.

Assignees

• Panasonic Ip Man Co Ltd

Inventors

• Onishi Itaru
• Tanahashi Osamu

Classifications

• B60Q3/43

  General lighting · CPC title

• F21Y2105/00

  Planar light sources · CPC title

• B60Q3/745

  using lighting panels or mats, e.g. electro-luminescent panels, LED mats · CPC title

• F21Y2115/20

  Electroluminescent [EL] light sources · CPC title

• F21V19/00 Primary

  Fastening of light sources or lamp holders (fastening electric light source solely by the coupling device H01R33/00 {; special means for attaching candle to candle holder F21V35/003}) · CPC title