公开(公告)号：US10048426B2

公开(公告)日：2018-08-14

申请号：US15412471

申请日：2017-01-23

Applicant: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.

Inventor： Osamu Tanahashi ,  Hiroyuki Sekii

IPC: F21V8/00 ,  G02B6/00

Abstract: A light guide includes a front surface. A back surface is opposite the front surface and includes a depression. A light incident surface introduces light. The light reflects off the depression and is emitted through the front surface. The depression includes an inclined side surface that faces the light incident surface. The inclined side surface includes a reflective curved surface that includes at least 50% of a surface area of the inclined side surface. In a cross section view of the depression in a plane substantially orthogonal to the front surface, a first tangent that touches a curved line defining the reflective curved surface of the inclined side surface and a second tangent that touches the curved line in a different location than the first tangent form a first angle that is greater than or equal to 0° and less than or equal to 30°.

公开(公告)号：US09835783B2

公开(公告)日：2017-12-05

申请号：US15189088

申请日：2016-06-22

Applicant: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.

Inventor： Osamu Tanahashi ,  Hideharu Kawachi ,  Shinichi Anami

IPC: G02B6/00 ,  F21V8/00 ,  F21V7/00

CPC classification number: G02B6/001 ,  F21S8/04 ,  F21V7/005

Abstract: An optical fiber holding structure includes a light-transmitting tube configured to cover a surface-light-emitting optical fiber and a fixture configured to fix the tube to a building material. The tube is made of a material having such rigidity that the tube is not bent even when the tube is horizontally fixed by the fixture. The tube has a notch through which the optical fiber is introduced into the tube. The fixture includes an engaging portion, a mounting portion and a leg portion. The engaging portion is inserted into the tube through the notch to engage with an inner circumference of the tube. The mounting portion is mounted to the building material. The leg portion is configured to interconnect the engaging portion and the mounting portion with a predetermined gap left therebetween.

公开(公告)号：US10018767B2

公开(公告)日：2018-07-10

申请号：US15184224

申请日：2016-06-16

Applicant: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.

Inventor： Hideharu Kawachi ,  Shinichi Anami ,  Osamu Tanahashi ,  Hiroyuki Sekii

IPC: F21V8/00 ,  F21S8/04 ,  F21V7/00 ,  F21V7/22 ,  F21V13/02 ,  F21Y103/10 ,  F21Y115/10

CPC classification number: G02B6/0045 ,  F21S8/04 ,  F21V7/0058 ,  F21V7/22 ,  F21V13/02 ,  F21Y2103/10 ,  F21Y2115/10 ,  G02B6/002 ,  G02B6/0038 ,  G02B6/0055 ,  G02B6/0075 ,  G02B6/0091

Abstract: An illumination device includes a light source unit and a light guide plate configured to guide light coming from the light source unit. The light guide plate includes an incidence surface, main emission surfaces from which the light incident on the incidence surface is emitted, and an end emission surface which is opposed to the incidence surface and from which the light is emitted. At least one of the main emission surfaces has a stepped surface which is formed such that the thickness of the light guide plate becomes thinner at a side of the end emission surface than at a side of the incidence surface. The stepped surface is configured to reflect the light in a direction opposite to a light guide direction extending from the incidence surface toward the end emission surface and inclined with respect to the light guide direction.

公开(公告)号：US09699860B2

公开(公告)日：2017-07-04

申请号：US14615728

申请日：2015-02-06

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Yohei Hayashi ,  Osamu Tanahashi ,  Hideharu Kawachi ,  Masanao Okawa

IPC: H05B33/14 ,  F21V23/06 ,  F21V19/04 ,  F21S4/28 ,  F21S2/00 ,  F21V21/005 ,  F21Y113/00 ,  F21Y105/00 ,  F21Y115/20

CPC classification number: H05B33/14 ,  F21S2/00 ,  F21S4/28 ,  F21V19/04 ,  F21V21/005 ,  F21V23/06 ,  F21Y2105/00 ,  F21Y2113/00 ,  F21Y2115/20

Abstract: A light emitting module includes light source units having a rectangular plate shape, and a base unit having an elongated rectangular plate shape. The light source units are disposed along a straight line and removably mounted to the base unit. Each of the light source units includes a pair of engaging portions used in bringing each of the light source units into engagement with the base unit. The engaging portions are disposed in two opposite sides of a mounting surface of each of the light source units to be mounted to the base unit. The base unit includes holding portions provided along a longitudinal direction of the base unit on an attachment surface of the base unit to which the light source units are attached and holding-portion-attachment portions to which the holding portions are detachably attached at a predetermined interval along the longitudinal direction of the base unit.

公开(公告)号：US10240730B2

公开(公告)日：2019-03-26

申请号：US15180321

申请日：2016-06-13

Applicant: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.

Inventor： Motohiro Saimi ,  Osamu Tanahashi

IPC: F21S8/02 ,  F21V8/00 ,  F21Y101/00

Abstract: An illumination device includes a light source unit; and a light guide plate configured to guide light from the light source unit and to emit the light outward. The light guide plate includes an incidence surface which constitutes one end surface of the light guide plate and on which the light from the light source unit is incident, and emission surfaces which constitute opposite main surfaces of the light guide plate and from which the light incident on the incidence surface is emitted. The emission surfaces include dots formed by micro prism processing. The dots on one of the emission surfaces and the dots on the other emission surface are position-shifted in rotational symmetry with each other.

公开(公告)号：US09874336B2

公开(公告)日：2018-01-23

申请号：US14770519

申请日：2014-02-21

Applicant: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.

Inventor： Ryusuke Kotera ,  Osamu Tanahashi ,  Akihiro Hirano ,  Hideharu Kawachi ,  Yohei Hayashi

IPC: F21V21/00 ,  F21V19/04 ,  F21V19/00

CPC classification number: F21V19/04 ,  F21V19/003

Abstract: The light emitting module includes a light source unit and a base plate where the light source unit is detachably mounted. The light source unit has an installation mechanism for installation to the base plate, and the base plate has an installation mechanism counterpart engaged with the installation mechanism. In addition, the light emitting module has a hook mechanism that catches the light source unit and the base plate when the installation mechanism and the installation mechanism counterpart are not engaged with each other. The hook mechanism is contained within a thickness of the light source unit when the light source unit is mounted to the base plate. In this configuration, it is possible to prevent the light source unit from dropping from the base plate using the hook mechanism even when engagement between the installation mechanism and the installation mechanism counterpart is released.

公开(公告)号：US09851076B2

公开(公告)日：2017-12-26

申请号：US14739365

申请日：2015-06-15

Applicant: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.

Inventor： Itaru Onishi ,  Osamu Tanahashi

IPC: F21V19/00 ,  F21V17/00 ,  F21V21/00 ,  F21V23/00 ,  B60Q3/43 ,  B60Q3/74 ,  F21W101/06 ,  F21Y105/00 ,  F21Y115/20

CPC classification number: F21V19/00 ,  B60Q3/43 ,  B60Q3/745 ,  F21W2107/30 ,  F21Y2105/00 ,  F21Y2115/20

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.