# US 9,752,759 B2 · Light emission device and lamp unit

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- Number: US 9,752,759 B2
- Document ID: US9752759B2
- Status: Granted
- Kind: B2
- Application number: 15/209,286
- Filed: 2016-07-13
- Published: 2016-11-03
- Granted: 2017-09-05
- Earliest claimed: 2014-03-10
- Assignees: Koito Manufacturing Co., Ltd.
- Applicants: Koito Manufacturing Co., Ltd.
- Inventors: Toru Ito; Haruhiko Iyoda; Hironori Tsukamoto; Masaya Shido; Yoshiro Ito; Yukihiro Onoda
- Web page: https://patentgrep.com/patent/US9752759B2

## CPC

- F21V 15/01: Housings, e.g. material or assembling of housing parts (F21V15/02 takes precedence {housings forming signs or letters G09F13/04})
- F21V 3/02: characterised by the shape
- H05B 33/145: {Arrangements of the electroluminescent material}
- H05B 33/22: characterised by the chemical or physical composition or the arrangement of auxiliary dielectric or reflective layers
- H05B 33/24: of metallic reflective layers (H05B33/26 takes precedence)
- H05B 33/28: of translucent electrodes
- F21Y 2115/20: Electroluminescent [EL] light sources
- F21V: FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- H05B: ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- F21Y: INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED

## Abstract

A lamp unit has an organic EL panel in which an organic EL light emission portion is formed on a substrate, the organic EL panel being flexible, and a frame that fixes the light emission device so as to cover a light emission area of the organic EL, panel. The frame has a window or a transparent portion at least in a part of a portion, overlapping the light emission area, of the frame. The frame is formed with recess portions at both ends thereof to house both end portions of the organic EL panel.

## Claims

### Claim 1

A lamp unit comprising:
a light emission device comprising an organic EL panel in which an organic EL light emission portion is formed on a substrate, the organic EL panel being flexible; and
a frame that fixes the light emission device so as to cover a light emission area of the organic EL panel,
wherein the frame comprises a window or a transparent portion at least in a part of a portion, overlapping the light emission area, of the frame, and
wherein the frame is formed with U-shaped recess portions at both ends thereof that extend in a rear direction away from a light emission direction of the light emission device, and that secure and house both end portions of the organic EL panel.

### Claim 2 (depends on 1)

The lamp unit according to claim 1,
wherein the frame comprises tabs, each of which is formed through a through hole, and
wherein the tabs are configured to fix the frame to another member.

### Claim 3 (depends on 1)

The lamp unit according to claim 1,
wherein the transparent portion of the frame has a convex portion or a concave portion.

### Claim 4 (depends on 1)

The lamp unit according to claim 1,
wherein the frame has such a shape that the frame is entirely curved with approximately the same curvature as the organic EL panel.

### Claim 5

A lamp unit comprising:
an organic EL panel in which an organic EL light emission portion is formed on a substrate, the organic EL panel being flexible; and
an entire cover or a portion, corresponding to a light emission area of the organic EL panel, of the cover is transparent or semitransparent, the cover comprising protrusion portions at both ends thereof so that the protrusion portions cover both ends of the organic EL panel, and
a frame,
wherein the cover and the frame have such shapes that the cover and the frame are entirely curved with approximately the same curvature as the organic EL panel, and
wherein the organic EL panel is fixed so as to be sandwiched between the cover and the frame.