JPH0422579B2 - - Google Patents
Info
- Publication number
- JPH0422579B2 JPH0422579B2 JP1277783A JP27778389A JPH0422579B2 JP H0422579 B2 JPH0422579 B2 JP H0422579B2 JP 1277783 A JP1277783 A JP 1277783A JP 27778389 A JP27778389 A JP 27778389A JP H0422579 B2 JPH0422579 B2 JP H0422579B2
- Authority
- JP
- Japan
- Prior art keywords
- floor
- leg
- bed
- lumbar
- frame
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 238000005452 bending Methods 0.000 claims description 9
- 230000000694 effects Effects 0.000 description 1
- 230000037433 frameshift Effects 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
Landscapes
- Invalid Beds And Related Equipment (AREA)
Description
【発明の詳細な説明】
本発明は、床部を駆動機構により起伏させ、患
者のベツドからの乗り降りを介助することを可能
とした床部起伏屈曲機構を備えたベツドに関する
ものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a bed equipped with a floor undulation and bending mechanism that allows the bed to be raised and lowered by a drive mechanism to assist a patient in getting on and off the bed.
（従来の技術）
例えば、長期にわたり、ベツド生活を余儀なく
されている患者にとつて、***を変え、ベツドの
床部上を移動して他へ移らんとする動作は大きな
負担であるし、苦痛を伴うものである。(Prior art) For example, for patients who are forced to live in bed for long periods of time, changing their body position, moving on the bed floor, and trying to move to another place is a great burden and pain. It is accompanied by
（発明が解決しようとする課題）
そのために、介護者の手を借りて前記した動作
を行つているが、介護者にとつても大変な労力で
あることは否めない。本発明はかかる点に鑑みて
なされたものである。(Problems to be Solved by the Invention) To achieve this, the above-mentioned movements are performed with the help of a caregiver, but it cannot be denied that it is a great effort for the caregiver as well. The present invention has been made in view of this point.
（課題を解決するための手段）
前記した課題を解決するために、本発明は、床
部を背床、腰床および第１、第２の脚床に分割す
ると共に順次屈曲自在に連結構成し、前記背床は
背上げ機構を介してベツド枠体に支持され、前記
腰床は、一端部を前記背床に軸着し、且つ、他端
部を腰床に回動部材を介して移動自在に当接した
フレームを介してベツド枠体に支持され、前記第
１脚床は一端部を前記背床に軸着した連動杆の他
端部により軸着支持され、前記第１脚床および第
２脚床に、それぞれ係止突起部を設けて、第２脚
床を上方向にのみ屈曲可能とし、該第２脚床の先
端部には回動部材を設け、前記第１脚床と背床と
をリンク機構を介して連結接続して、前記背上げ
機構により背床および腰床の起伏と共に前記第１
脚床を連動可能とすることを特徴とするものであ
る。(Means for Solving the Problems) In order to solve the above-mentioned problems, the present invention divides the floor part into a back floor, a lumbar floor, and a first and second leg floor, and connects them in order so as to be flexible. , the back bed is supported by a bed frame via a back raising mechanism, and the lumbar bed has one end pivoted to the back bed and the other end moved to the lumbar bed via a rotating member. The first leg floor is supported by the bed frame via a frame that freely contacts the bed frame, and the first leg floor is pivoted and supported by the other end of an interlocking rod whose one end is pivoted to the back floor, and the first leg floor and A locking protrusion is provided on each of the second leg floors so that the second leg floor can be bent only in an upward direction. The back floor is connected to the back floor through a link mechanism, and the back raising mechanism raises and lowers the back floor and the lumbar floor as well as the first
The feature is that the leg floor can be interlocked.
また、本発明は、腰床に、前記フレームの他端
部の回動部材を介して前記フレームを支持案内す
る案内枠を設けるものである。 Further, in the present invention, a guide frame is provided on the waist floor to support and guide the frame via a rotating member at the other end of the frame.
また、本発明は、第２脚床に設けられた回動部
材は前記背床および腰床の起伏動作に連動して、
床に接触し転動するものである。 Further, in the present invention, the rotating member provided on the second leg floor is linked to the up-and-down movement of the back floor and the lumbar floor,
It contacts the floor and rolls.
（作用）
背上げ機構を起動して背床を起床させ、背上げ
完了後、背上げ機構の動作を続行させると、これ
に伴つて第１脚床はリンク機構により連動し、ベ
ツド枠体下方向に屈曲していく。(Function) When the back raising mechanism is activated to raise the back floor, and after the back raising is completed, the operation of the back raising mechanism is continued, the first leg floor is interlocked by the link mechanism, and the lower bed frame body is raised. It bends in the direction.
この際、前記第１脚床は第２脚床と共に床に向
かつて屈曲し、第２脚床の端部が床に当接する。
さらに、前記第１脚床が屈曲していくと、第２脚
床は第１脚床に対して屈曲していき、第１脚床お
よび第２脚床はヘツドボード側に引き寄せられる
ことになる。 At this time, the first leg base is bent toward the floor together with the second leg base, and the end portion of the second leg base is brought into contact with the floor.
Further, as the first leg floor bends, the second leg floor bends relative to the first leg floor, and the first leg floor and the second leg floor are drawn toward the headboard.
さらに、背上げ機構の動作を続行させると、フ
レームは時計周り方向に回動し、これによつて腰
床は上昇し、且つ若干脚床方向へ変位する。この
ため前記腰床とフレームとは接触位置がずれてく
るが、前記フレームの回動部材が腰床の案内枠を
転動するため、腰床とフレームとは接触した状態
で互いに動きを妨げることなく、円滑に背床およ
び腰床の起伏動作がなされる。 Furthermore, when the back raising mechanism continues to operate, the frame rotates clockwise, thereby raising the lumbar floor and slightly displacing it toward the leg floor. For this reason, the contact position between the lumbar floor and the frame shifts, but since the rotating member of the frame rolls on the guide frame of the lumbar floor, the lumbar floor and the frame are in contact and prevent each other from moving. The back floor and lumbar floor can be raised and lowered smoothly without any problems.
（実施例）
次に、本発明にかかる床部起伏屈曲機構を備え
たベツドについて、添付の図面を参照しながら以
下説明する。(Example) Next, a bed equipped with a floor portion undulation/bending mechanism according to the present invention will be described below with reference to the accompanying drawings.
第１図において、参照符号１はベツド本体を示
し、このベツド本体１は、サイドフレーム２と、
ヘツドボード３を有する。また、このベツド本体
１は背床４と腰床５と２分割形成された第１、第
２の脚床６，７を有しており、前記腰床５には手
摺り８と、サイドフレーム２の第１、第２脚床
６，７と対応する部分には平行棒９が設けられ
る。なお、この第１図は前記背床４を起伏させ、
第１、第２脚床６，７を屈曲された状態を示して
いる。 In FIG. 1, reference numeral 1 indicates a bed main body, and this bed main body 1 includes a side frame 2,
It has a headboard 3. The bed main body 1 also has a back floor 4, a waist floor 5, and first and second leg floors 6, 7 formed in two parts, and the waist floor 5 has a handrail 8 and a side frame. Parallel bars 9 are provided at portions corresponding to the first and second leg floors 6 and 7 of 2. In addition, in this FIG. 1, the back floor 4 is undulated,
The first and second leg floors 6 and 7 are shown in a bent state.
さらに、第２図において、背床４と腰床５とを
起伏し、且つ第１、第２脚床６，７とを互いに屈
曲させた状態を示している。 Further, FIG. 2 shows a state in which the back floor 4 and the waist floor 5 are raised and lowered, and the first and second leg floors 6 and 7 are bent relative to each other.
ここで、第３図に、このベツド本体１の詳細な
分解図を示す。 Here, FIG. 3 shows a detailed exploded view of this bed main body 1.
サイドフレーム２には背上げ機構（後述）、腰
床５に当接するフレーム（後述）を支持するため
の支持杆１０，１１が設けられる。背上げ機構１
２は駆動源であるモータ１３とモータ１３に取付
けられたねじシヤフトの内蔵される起動部１４
と、この起動部１４のねじシヤフト（図示せず）
に接続される背上げリンク１５と、この背上げリ
ンク１５と背床４とを接続する連接棒１６とから
構成される。前記モータ１３は支持杆１０の支持
部１７に、この支持部１７を中心に揺動可能に取
付けられる。前記背上げリンク１５は前記起動部
１４のねじシヤフトを内蔵するカバー１８に設け
られたスリツト１９を介してねじシヤフトに取付
けられる。一方、前記背上げリンク１５は支持杆
１０の支持部２０に回動軸２１が軸着される。 The side frame 2 is provided with a back raising mechanism (described later) and support rods 10 and 11 for supporting a frame (described later) that comes into contact with the lumbar floor 5. Back lift mechanism 1
Reference numeral 2 denotes a motor 13 which is a driving source, and a starting part 14 which has a built-in screw shaft attached to the motor 13.
and a screw shaft (not shown) of this starting part 14.
It is composed of a back-lifting link 15 connected to the back-lifting link 15, and a connecting rod 16 connecting the back-lifting link 15 and the back floor 4. The motor 13 is attached to a support portion 17 of the support rod 10 so as to be able to swing around the support portion 17 . The back-up link 15 is attached to the screw shaft of the actuator 14 through a slit 19 provided in a cover 18 that houses the screw shaft. On the other hand, in the back-up link 15, a rotation shaft 21 is pivotally attached to the support portion 20 of the support rod 10.
サイドフレーム２の支持杆１１の支点２２に軸
着されるフレーム２３は１端部が前記背床４に突
設されと突設片２４に軸着されると共に背床４を
当接保持する背受け部２５を形成して、他端部に
は腰床５に当接する回動部材、すなわち、ローラ
２６が設けられる。このローラ２６が腰床５に形
成された断面コ型状の案内枠２７に係合すること
で腰床５が支持される。 A frame 23 is pivoted to the fulcrum 22 of the support rod 11 of the side frame 2. One end of the frame 23 projects from the back floor 4 and is pivoted to the protruding piece 24, and also has a back that abuts and holds the back floor 4. A receiving portion 25 is formed, and the other end thereof is provided with a rotating member, that is, a roller 26, which comes into contact with the lumbar floor 5. The lumbar floor 5 is supported by the roller 26 engaging with a guide frame 27 formed on the lumbar floor 5 and having a U-shaped cross section.
前記第１脚床６は背床４とリンク機構、すなわ
ち、背床４に突設された突設片２４と、この突設
片２４に軸着してなる連動杆２８を介して連結接
続され、前記第２脚床７は第１脚床６に蝶着支持
される。この場合、前記第１、第２脚床６，７に
は、それぞれ係止突起部２９，３０が形成され、
第１、第２脚床６，７が上方向にのみ屈曲可能に
設定されている。また、前記第２脚床７には、床
に接触して転動するローラ３１が設けられる。 The first leg floor 6 is connected to the back floor 4 via a link mechanism, that is, a protrusion piece 24 protruding from the back floor 4, and an interlocking rod 28 that is pivoted to the protrusion piece 24. , the second leg floor 7 is hingedly supported on the first leg floor 6. In this case, locking protrusions 29 and 30 are formed on the first and second leg beds 6 and 7, respectively,
The first and second leg floors 6 and 7 are set to be bendable only in an upward direction. Further, the second leg floor 7 is provided with a roller 31 that rolls in contact with the floor.
本発明にかかる床部起伏屈曲機構を備えたベツ
ドは以上のように構成されるものであり、次にそ
の作用を説明する。 The bed equipped with the floor undulating and bending mechanism according to the present invention is constructed as described above, and its operation will be explained next.
第４図に示すように、背上げ機構１２を起動し
て、モータ１３を駆動させると、起動部１４内の
ねじシヤフトにより、背上げリンク１５は回動軸
２１を中心に時計周りを方向に回動し、連接棒１
６を介して背床４を押し上げる。背床４は起床
し、これに伴つて第１、第２脚床６，７は、前記
背床４の突設片２４に軸着される連動杆２８によ
り連動して、サイドフレーム２下方向に屈曲して
いく。 As shown in FIG. 4, when the back raising mechanism 12 is started and the motor 13 is driven, the back raising link 15 is rotated clockwise around the rotating shaft 21 by the screw shaft in the starting part 14. Rotate, connecting rod 1
6 to push up the back floor 4. The back floor 4 rises, and along with this, the first and second leg floors 6 and 7 are moved in the downward direction of the side frame 2 by interlocking levers 28 that are pivoted on the protruding pieces 24 of the back floor 4. It bends to.
第１、第２脚床６，７が床に向かつて屈曲して
いくと、第２脚床のローラ３１は床に当接する。
さらに、前記第１脚床６が屈曲していくと、第２
脚床７は第１脚床６に蝶着されているので第１脚
床６と第２脚床７は屈曲し、ローラ３１が床上を
転動しつつヘツドボード３側に引き寄せられるこ
とになる。 When the first and second leg beds 6, 7 bend toward the floor, the rollers 31 of the second leg base come into contact with the floor.
Furthermore, as the first leg bed 6 bends, the second leg bed 6 bends.
Since the leg floor 7 is hinged to the first leg floor 6, the first leg floor 6 and the second leg floor 7 are bent, and the roller 31 is drawn toward the headboard 3 while rolling on the floor.
次に、第５図に示すように、背上げ機構１２の
動作を続行させると、背床４の起床と共に連動杆
２８はさらに変位する。また、背床４の起床に伴
い、サイドフレーム２の支持杆１１の支点２２に
軸着されるフレーム２３は支点２２を中心に時計
周り方向に回動し、これによつて腰床５は上昇
し、且つ若干脚床方向へ変位する。このため、前
記腰床５とフレーム２３は接触位置がずれてくる
が、前記フレーム２３に設けられるローラ２６が
腰床５に形成された断面コ型状の案内枠２７を転
動するため、腰床５とフレーム２３とは接触した
状態で互いに動きを妨げることなく、円滑に背床
４および腰床５の起伏動作がなされる。 Next, as shown in FIG. 5, when the operation of the back raising mechanism 12 is continued, the interlocking rod 28 is further displaced as the back bed 4 is raised up. Further, as the back floor 4 rises, the frame 23 pivoted to the fulcrum 22 of the support rod 11 of the side frame 2 rotates clockwise around the fulcrum 22, thereby causing the lumbar floor 5 to rise. and the leg is slightly displaced toward the floor. For this reason, the contact position between the waist bed 5 and the frame 23 shifts, but since the roller 26 provided on the frame 23 rolls on a guide frame 27 formed on the waist bed 5 and having a U-shaped cross section, the waist The floor 5 and the frame 23 are in contact with each other, and the back floor 4 and the waist floor 5 can be smoothly raised and lowered without interfering with each other's movement.
このように、本発明における床部起伏屈曲機構
は、背上げ機構１２の動作によつて、背床４およ
び腰床５の起伏の他に、背床４の突設片２４に軸
着される連動杆２８により第１、第２脚床６，７
を連動屈曲させる構成であるので、背上げ機構１
２のみで、ベツドの床部を任意な状態に調節する
ことができ、患者の***を変えて移動する労力が
不必要となり、介護者および患者にかかる大きな
負担、苦痛をなくすことが可能となる。 As described above, the floor undulation/bending mechanism of the present invention is pivoted to the protruding piece 24 of the back floor 4 in addition to the undulation of the back floor 4 and the lumbar floor 5 by the operation of the back raising mechanism 12. The first and second leg floors 6, 7 are connected by the interlocking rod 28.
Since the structure is such that the back lifting mechanism 1
With only 2, the bed floor can be adjusted to any desired state, eliminating the need for labor to change and move the patient's body position, and eliminating the heavy burden and pain placed on caregivers and patients. .
以上本発明の一実施例を挙げて説明したが、背
上げ機構１２の駆動源であるモータ１３を他の駆
動源を用いてもよい。また、腰床５とフレーム２
３との接触点にローラ２６の代わりに他の回動部
材を用いてもよい。 Although one embodiment of the present invention has been described above, the motor 13 which is the drive source of the back raising mechanism 12 may be replaced with another drive source. In addition, the waist floor 5 and frame 2
Instead of the roller 26, another rotating member may be used at the point of contact with the roller 26.
（発明の効果）
本発明によれば、背上げ機構の動作によつて、
背床および腰床の起伏の他に、背床に軸着される
リンク機構により第１、第２脚床を連動屈曲させ
る構成であるので、背上げ機構のみで、ベツドの
床部を任意の姿勢に調節でき、患者は容易に立位
姿勢をとることができる。従つて、患者の***を
変えて移動する労力が不必要となり、介護者およ
び患者にかかる大きな負担、苦痛をなくすことが
可能となる。しかも、背上げ機構のみで目的を達
成することができるため機構の単純化並びに操作
の簡便化、ひいてはコストの抑制が可能となる効
果も奏する。(Effects of the Invention) According to the present invention, by the operation of the back raising mechanism,
In addition to the ups and downs of the back floor and lumbar floor, the first and second leg floors are bent in conjunction with each other by a link mechanism pivoted to the back floor, so the bed floor can be adjusted to any desired position using only the back raising mechanism. It can be adjusted to any position, allowing the patient to easily assume a standing position. Therefore, the effort of changing and moving the patient's body position becomes unnecessary, and it becomes possible to eliminate the heavy burden and pain placed on the caregiver and the patient. Furthermore, since the purpose can be achieved using only the back raising mechanism, the mechanism can be simplified, the operation can be simplified, and the cost can be reduced.
第１図および第２図は本発明にかかる床部起伏
屈曲機構を備えたベツドの１実施例を示す全体斜
視図、第３図は第１図に示すベツドの床部起伏屈
曲機構の分解斜視図、第４図および第５図は、本
発明にかかる床部起伏屈曲機構を備えたベツドの
作用説明図である。
１……ベツド本体、２……サイドフレーム、３
……ヘツドボード、４……背床、５……腰床、
６，７……第１、第２の脚床、１０，１１……支
持杆、１２……背上げ機構、１３……モータ、１
４……起動部、１５……背上げリンク、１６……
連接棒、２２……支点、２３……フレーム、２４
……突設片、２５……背受け部、２６……ロー
ラ、２７……案内枠、２８……連動杆、３１……
ローラ。
1 and 2 are overall perspective views showing one embodiment of a bed equipped with a floor undulation/bending mechanism according to the present invention, and FIG. 3 is an exploded perspective view of the floor undulation/bending mechanism of the bed shown in FIG. 1. 4 and 5 are explanatory views of the operation of the bed provided with the floor undulation/bending mechanism according to the present invention. 1...Bed body, 2...Side frame, 3
...headboard, 4...back floor, 5...waist floor,
6, 7...First and second leg floors, 10, 11...Support rod, 12...Back raising mechanism, 13...Motor, 1
4... Starting part, 15... Back lift link, 16...
Connecting rod, 22... Fulcrum, 23... Frame, 24
... Projection piece, 25 ... Back support section, 26 ... Roller, 27 ... Guide frame, 28 ... Interlocking rod, 31 ...
roller.
Claims (1)
分割すると共に順次屈曲自在に連結構成し、前記
背床は背上げ機構を介してベツド枠体に支持さ
れ、前記腰床は、一端部を前記背床に軸着し、且
つ、他端部を腰床に回動部材を介して移動自在に
当接したフレームを介してベツド枠体に支持さ
れ、前記第１脚床は一端部を前記背床に軸着した
連動杆の他端部により軸着支持され、前記第１脚
床および第２脚床に、それぞれ係止突起部を設け
て、第２脚床を上方向にのみ屈曲可能とし、該第
２脚床の先端部には回動部材を設け、前記第１脚
床と背床とをリンク機構を介して連結接続して、
前記背上げ機構により背床および腰床の起伏と共
に前記第１脚床を連動可能とすることを特徴とす
る床部起伏屈曲機構を備えたベツド。 ２ 請求項１記載の腰床に、前記フレームの他端
部の回動部材を介して前記フレームを支持案内す
る案内枠を設けることを特徴とする床部起伏屈曲
機構を備えたベツド。 ３ 請求項１記載の第２脚床に設けられた回動部
材は前記背床および腰床の起伏動作に連動して、
床に接触し転動することを特徴とする床部起伏屈
曲機構を備えたベツド。[Scope of Claims] 1. The floor portion is divided into a back floor, a lumbar floor, and first and second leg floors, and are connected in order so as to be flexible, and the back floor is connected to the bed frame via a back raising mechanism. The lumbar bed is supported by the bed frame via a frame having one end pivoted to the back bed and the other end movably abutting the lumbar bed via a rotating member. , the first leg floor is pivoted and supported by the other end of an interlocking rod having one end pivoted to the back floor, and the first leg floor and the second leg floor are each provided with a locking protrusion, The second leg floor can be bent only in an upward direction, a rotating member is provided at the tip of the second leg floor, and the first leg floor and the back floor are connected and connected via a link mechanism,
A bed equipped with a floor undulation bending mechanism, characterized in that the first leg floor can be linked with the undulation of the back floor and lumbar floor by the back raising mechanism. 2. A bed according to claim 1, characterized in that the lumbar bed is provided with a guide frame that supports and guides the frame via a rotating member at the other end of the frame. 3. The rotating member provided on the second leg floor according to claim 1 is interlocked with the up-and-down movement of the back floor and the lumbar floor,
A bed equipped with a floor undulation bending mechanism that makes contact with the floor and rolls.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1277783A JPH03139352A (en) | 1989-10-25 | 1989-10-25 | Bed with mechanism for making undulation and bending |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1277783A JPH03139352A (en) | 1989-10-25 | 1989-10-25 | Bed with mechanism for making undulation and bending |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03139352A JPH03139352A (en) | 1991-06-13 |
| JPH0422579B2 true JPH0422579B2 (en) | 1992-04-17 |
Family
ID=17588243
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1277783A Granted JPH03139352A (en) | 1989-10-25 | 1989-10-25 | Bed with mechanism for making undulation and bending |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03139352A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11043638B2 (en) | 2014-10-07 | 2021-06-22 | Idemitsu Kosan Co., Ltd. | Organic electroluminescence device and electronic device |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0740977B2 (en) * | 1990-03-28 | 1995-05-10 | フランスベッド株式会社 | Bed equipment |
| JPH0740976B2 (en) * | 1990-03-28 | 1995-05-10 | フランスベッド株式会社 | Bed equipment |
| US5692256A (en) * | 1995-08-04 | 1997-12-02 | Hill-Rom, Inc. | Mattress for a hospital bed |
| JPH09294783A (en) * | 1996-05-08 | 1997-11-18 | Takashi Sakai | Automatic rising bed system |
| JPH09294782A (en) * | 1996-05-08 | 1997-11-18 | Takashi Sakai | Automatic rising bed system |
| JP2005118189A (en) * | 2003-10-15 | 2005-05-12 | Iura Co Ltd | Bed capable of raising the back |
| JP6755477B2 (en) * | 2016-07-28 | 2020-09-16 | 株式会社いうら | Bed device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60100965A (en) * | 1983-11-07 | 1985-06-04 | 新谷 春水 | Multi-purpose caring bed |
| JPS61238232A (en) * | 1985-04-16 | 1986-10-23 | 石井 賢俊 | Bed having sitting aiding and standing aiding mechanism |
-
1989
- 1989-10-25 JP JP1277783A patent/JPH03139352A/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60100965A (en) * | 1983-11-07 | 1985-06-04 | 新谷 春水 | Multi-purpose caring bed |
| JPS61238232A (en) * | 1985-04-16 | 1986-10-23 | 石井 賢俊 | Bed having sitting aiding and standing aiding mechanism |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11043638B2 (en) | 2014-10-07 | 2021-06-22 | Idemitsu Kosan Co., Ltd. | Organic electroluminescence device and electronic device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH03139352A (en) | 1991-06-13 |
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