JP2556929B2 - Door phone device with electric lock - Google Patents
Door phone device with electric lockInfo
- Publication number
- JP2556929B2 JP2556929B2 JP2244883A JP24488390A JP2556929B2 JP 2556929 B2 JP2556929 B2 JP 2556929B2 JP 2244883 A JP2244883 A JP 2244883A JP 24488390 A JP24488390 A JP 24488390A JP 2556929 B2 JP2556929 B2 JP 2556929B2
- Authority
- JP
- Japan
- Prior art keywords
- electric lock
- circuit
- electric
- indoor terminal
- unlocking
- 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 - Fee Related
Links
Landscapes
- Interconnected Communication Systems, Intercoms, And Interphones (AREA)
- Lock And Its Accessories (AREA)
Description
【発明の詳細な説明】 [産業上の利用分野] 本発明は電気錠付ドアホン装置に係わり、特に複数の
ドアホンに対応できる電気錠付ドアホン装置に関する。Description: TECHNICAL FIELD The present invention relates to an intercom device with an electric lock, and more particularly to an intercom device with an electric lock capable of handling a plurality of intercoms.
[従来の技術及び発明が解決しようとする課題] 従来の電気錠付ドアホン装置は第2図に示すように、
送受器32と電気錠監視LED33と解、施錠ボタン34を設け
た室内端末TE2、制御回路31、スピーカ35a、マイク35
b、呼出ボタン35cを設けたドアホン35及びドアホン35の
近傍に設置された扉36に設けた電気錠37で構成され、制
御回路31は室内端末TE2と接続され、室内端末TE2とドア
ホン35は通話用ケーブルL5で接続される。また、制御回
路31と扉36に設けた電気錠37は電気錠用ケーブルL5で接
続される。[Prior Art and Problems to be Solved by the Invention] As shown in FIG.
Indoor terminal TE 2 provided with a handset 32, an electric lock monitoring LED 33, and a lock button 34, a control circuit 31, a speaker 35a, a microphone 35
b, consists of an electric lock 37 provided on the door 36 which is installed near the door phone 35 and the intercom 35 provided with a call button 35c, the control circuit 31 is connected to the indoor terminal TE 2, the indoor terminal TE 2 and intercom 35 Are connected by a call cable L 5 . Further, the control circuit 31 and the electric lock 37 provided on the door 36 are connected by the electric lock cable L 5 .
上記構成の電気錠付ドアホン装置で来訪者がドアホン
35の呼出ボタン35cを操作すれば、スピーカ35aとマイク
35bを用いて室内端末TE2の送受器32との間で通話路が形
成される。扉36に設けた電気錠37が解錠されているか施
錠されているかの表示は電気錠監視LED33の発光で表示
される。電気錠37の施錠状態の表示を例えば電気錠監視
LED33の発光で表示するものとすれば、電気錠監視LED33
が発光している場合は電気錠37は施錠されている。この
状態で電気錠37を解錠したい場合は、解、施錠ボタン34
を押下する。解、施錠ボタン34を押下すると電気錠37が
解錠され、発光中の電気錠監視LED33は消灯する。な
お、電気錠監視LED33が消灯しているとき、解、施錠ボ
タン34を操作すると解錠中の電気錠37は施錠される。Visitors can use the intercom system with electric lock with the above configuration
If you operate the call button 35c of 35, the speaker 35a and microphone
A call path is formed with the handset 32 of the indoor terminal TE 2 by using 35b. The indication whether the electric lock 37 provided on the door 36 is unlocked or locked is displayed by the light emission of the electric lock monitoring LED 33. Displaying the lock status of the electric lock 37, for example, electric lock monitoring
If it is supposed to display with the light emission of LED33, electric lock monitoring LED33
When light is emitted, the electric lock 37 is locked. If you want to unlock the electric lock 37 in this state, release and lock the button 34
Press. When the unlocking / locking button 34 is pressed, the electric lock 37 is unlocked, and the electric lock monitoring LED 33 that is emitting light is turned off. When the unlocking / locking button 34 is operated while the electric lock monitoring LED 33 is off, the unlocked electric lock 37 is locked.
上記構成の電気錠付ドアホン装置では、室内端末TE2
の筐体上面に電気錠監視LED33が1個と、解、施錠ボタ
ン34が1個の1組の電気錠操作表示部材しか設けていな
いので、複数のドアホンと複数の扉に設けた複数の電気
錠を設けた場合には別にもう1組の電気錠操作表示部材
を設けなければならない難点がある。In the doorphone device with the electric lock configured as described above, the indoor terminal TE 2
Since only one set of electric lock operation display member with one electric lock monitoring LED 33 and one unlocking and locking button 34 is provided on the upper surface of the housing of the above, a plurality of door phones and a plurality of electric doors provided for a plurality of doors are provided. If the lock is provided, there is a drawback that another set of electric lock operation display members must be provided separately.
[発明の目的] 本発明は上述した難点に鑑みなされたもので、1組の
電気錠表示部材と操作部材で複数のドアホンを解、施錠
でき、かつ電気錠表示部材で待受状態における複数の電
気錠の解、施錠を代表表示すると共に選局による個別表
示を行い、操作部材で個別表示中のドアホンに対応した
電気錠を解、施錠できる電気錠付ドアホン装置を提供す
ることを目的とする。[Object of the Invention] The present invention has been made in view of the above-mentioned difficulties, and a plurality of door intercoms can be unlocked and locked with one set of an electric lock display member and an operating member, and a plurality of electric lock display members in a standby state can be used. An object of the present invention is to provide an intercom device with an electric lock, which displays the unlocking and locking of an electric lock as a representative and also displays individual display by channel selection, and unlocks and locks the electric lock corresponding to the intercom that is being individually displayed by the operation member. .
[課題を解決するための手段] 本発明による電気錠付ドアホン装置は、室内端末と、
室内端末に接続された複数のドアホンと、複数のドアホ
ンに対応した扉にそれぞれ設けられた複数の電気錠とを
備え、室内端末には待受状態における複数の電気錠の
解、施錠状態を代表表示する発光素子と、室内端末によ
り選局されたドアホンの1つに対応した電気錠の解、施
錠状態を発光素子により個別表示すると共に個別表示に
応じて電気錠を解、施錠させる解、施錠ボタンとで構成
する。[Means for Solving the Problems] An intercom device with an electric lock according to the present invention includes an indoor terminal,
Equipped with a plurality of intercoms connected to the indoor terminal and a plurality of electric locks respectively provided on the doors corresponding to the plurality of intercoms, the indoor terminal represents a plurality of unlocked and locked electric locks in the standby state. Light emitting element to display and unlocking of electric lock corresponding to one of the intercoms selected by the indoor terminal, the locked state is individually displayed by the light emitting element, and the electric lock is unlocked and unlocked according to the individual display, unlocking It consists of a button and.
[実施例] 以下、本発明による電気錠付ドアホン装置の一実施例
を第1図に従って詳述する。[Embodiment] An embodiment of a door intercom device with an electric lock according to the present invention will be described in detail below with reference to FIG.
本発明による電気錠付ドアホン装置は第1図に示すよ
うに、通話路スイッチSW1、SW2、電気錠スイッチSW3、S
W4及び電気錠監視モジュール2を設けた制御回路1、室
内端末TE1、スピーカ20a、23a、マイク20b、23b、呼出
ボタン20c、23cを実装したドアホン20、23及びドアホン
20、23の近傍に設置された扉21、24に設けた電気錠22、
25で構成され、制御回路1とドアホン20、23は端子T1、
T2を介して通話用ケーブルL1、L2により、扉21、24に設
けた電気錠22、25は端子T3、T4を介して電気錠用ケーブ
ルL3、L4とそれぞれ接続される。As shown in FIG. 1, a doorphone device with an electric lock according to the present invention includes a communication path switch SW 1 , SW 2 , an electric lock switch SW 3 , S.
Doorphones 20, 23 and doorphones equipped with a control circuit 1 provided with W 4 and an electric lock monitoring module 2, an indoor terminal TE 1 , speakers 20a, 23a, microphones 20b, 23b, call buttons 20c, 23c.
Electric locks 22 installed on doors 21 and 24 installed near 20 and 23,
25, and the control circuit 1 and the intercoms 20 and 23 have terminals T 1 and
The electric locks 22 and 25 provided on the doors 21 and 24 are connected to the electric lock cables L 3 and L 4 via the terminals T 3 and T 4 by the call cables L 1 and L 2 via T 2 , respectively. It
制御回路1の端子T1、T2は、常開接点で構成された通
話路スイッチSW1、SW2を経由して室内端末TE1の端子
T11、T12とそれぞれ接続され、端子T3とT4は、常開接点
で構成された電気錠スイッチSW3、SW4を経由して室内端
末TE1の端子T13へ共に接続される。通話路スイッチSW1
と電気錠スイッチSW3の制御側は室内端末TE1の端子T16
と、通話路スイッチSW2と電気錠スイッチSW4の制御側は
室内端末TE1の端子T17と接続される。The terminals T 1 and T 2 of the control circuit 1 are connected to the terminals of the indoor terminal TE 1 via the communication path switches SW 1 and SW 2 which are normally open contacts.
Terminals T 3 and T 4 are connected to T 11 and T 12 , respectively, and are also connected to terminal T 13 of indoor terminal TE 1 via electric lock switches SW 3 and SW 4 which are normally open contacts. . Call path switch SW 1
And the control side of the electric lock switch SW 3 is the terminal T 16 of the indoor terminal TE 1.
The control sides of the communication path switch SW 2 and the electric lock switch SW 4 are connected to the terminal T 17 of the indoor terminal TE 1 .
電気錠監視モジュール2はコンパレータ4、5を設け
た通話監視回路3、電気錠開閉モニタ回路6、7、オア
回路8、アンド回路9〜12、ダイオードD1〜D3、インバ
ータ13a、13bで構成する。電気錠監視モジュール2の端
子T5、T6は制御回路1の端子T1、T2と、端子T7、T8は制
御回路1の端子T3、T4とそれぞれ接続される。The electric lock monitoring module 2 includes a call monitoring circuit 3 provided with comparators 4 and 5, electric lock opening / closing monitor circuits 6 and 7, an OR circuit 8, AND circuits 9 to 12, diodes D 1 to D 3 , and inverters 13a and 13b. To do. The terminals T 5 and T 6 of the electric lock monitoring module 2 are connected to the terminals T 1 and T 2 of the control circuit 1, and the terminals T 7 and T 8 are connected to the terminals T 3 and T 4 of the control circuit 1, respectively.
また、端子T5、T6は通話監視回路3のコンパレータ
4、5の一方の入側と接続され、コンパレータ4、5の
他方の入側は基準電位点と接続される。更に、コンパレ
ータ4、5の出側はインバータ13a、13bを介してアンド
回路9の一方並びに他方の入側と接続される。つぎにコ
ンパレータ4、5の出側はアンド回路10、12の一方の入
側とそれぞれ接続される。また、前述のアンド回路9の
出側はアンド回路11の一方の入側と接続される。The terminals T 5 and T 6 are connected to one input side of the comparators 4 and 5 of the call monitoring circuit 3, and the other input side of the comparators 4 and 5 are connected to the reference potential point. Further, the output sides of the comparators 4 and 5 are connected to one and the other input sides of the AND circuit 9 via inverters 13a and 13b. Next, the output sides of the comparators 4 and 5 are connected to the input sides of one of the AND circuits 10 and 12, respectively. The output side of the AND circuit 9 is connected to one input side of the AND circuit 11.
電気錠開閉モニタ回路6、7の入側は端子T7、T8と接
続され、出側はアンド回路10、12の他方の入側にそれぞ
れ接続されると共に、オア回路8の一方並びに他方の入
側と接続される。The input sides of the electric lock opening / closing monitor circuits 6 and 7 are connected to the terminals T 7 and T 8 , and the output sides are connected to the other input sides of the AND circuits 10 and 12, respectively, and one and the other of the OR circuits 8 are connected. Connected with the incoming side.
オア回路8の出側は前述のアンド回路11の他方の入側
と接続される。The output side of the OR circuit 8 is connected to the other input side of the AND circuit 11 described above.
また、アンド回路10、11、12の出側はダイオードD1、
D2、D3を経由して端子T9と接続される。更に、端子T9は
室内端子TE1の端子T14と接続される。Further, the output side of the AND circuits 10, 11, 12 is a diode D 1 ,
Connected to terminal T 9 via D 2 and D 3 . Further, the terminal T 9 is connected to the terminal T 14 of the indoor terminal TE 1 .
室内端末TE1は選局ボタン15a、15bが接続された選局
回路15、通話路ネットワーク16、送受器17、解、施錠ボ
タン18、電気錠駆動回路18a、電気錠監視LED19、LEDド
ライバ19a及びCPU20で構成される。The indoor terminal TE 1 includes a channel selection circuit 15 to which channel selection buttons 15a and 15b are connected, a communication channel network 16, a handset 17, an unlocking and locking button 18, an electric lock driving circuit 18a, an electric lock monitoring LED 19, an LED driver 19a and Composed of CPU20.
選局ボタン15a、15bは、それぞれ通話路スイッチS
W1、SW2に対応し、前述したように通話路スイッチSW1、
SW2は、電気錠スイッチSW3、SW4と対応する。また、
解、施錠ボタン18は電気錠駆動回路18aを介して端子T13
と接続され、カソードが基準電位点に接続された電気錠
監視LED19のアノード側はLEDドライバ19aを介して端子T
14と接続されると共に、端子T14はCPU20と接続される。The channel selection buttons 15a and 15b are the communication path switch S
Corresponding to W 1 and SW 2 , as described above, speech path switch SW 1 ,
SW 2 corresponds to the electric lock switches SW 3 and SW 4 . Also,
The lock button 18 is released from the terminal T 13 via the electric lock drive circuit 18a.
The anode side of the electric lock monitoring LED 19 whose cathode is connected to the reference potential point is connected to the terminal T via the LED driver 19a.
The terminal T 14 is connected to the CPU 20 while being connected to the CPU 14 .
また、CPU20は端子T16、T17と接続され、端子T16、T
17を介して通話炉スイッチSW1、SW2と電気錠スイッチSW
3、SW4を制御する。Further, CPU 20 is connected to the terminal T 16, T 17, terminals T 16, T
Call furnace switch SW 1 , SW 2 and electric lock switch SW via 17
3 , control SW 4 .
[発明の作用] 上記構成の電気錠付ドアホン装置で、待受状態では通
話監視回路3のコンパレータ4、5が共に動作してない
ので、インバータ13aと13bの出側が共にHレベルにな
り、アンド回路9は能動となり、アンド回路11の一方の
入側がHレベルとなる。アンド回路11の他方の入側はオ
ア回路8の出側と接続されているので、電気錠開閉モニ
タ回路6、7のいずれか一方、又は両方がHレベルとな
るとアンド回路11の出側がHレベルとなり、電気錠監視
LED19が発光する。電気錠22、25が解錠された状態で電
気錠開閉モニタ回路6、7がHレベルになるものと仮定
すると、電気錠監視LED19の発光は解錠表示となる。[Operation of the Invention] In the intercom apparatus with the electric lock having the above configuration, since neither the comparator 4 nor the comparator 5 of the call monitoring circuit 3 is operating in the standby state, the output sides of the inverters 13a and 13b both become H level, and The circuit 9 becomes active, and one input side of the AND circuit 11 becomes H level. Since the other input side of the AND circuit 11 is connected to the output side of the OR circuit 8, when either or both of the electric lock opening / closing monitor circuits 6 and 7 become H level, the output side of the AND circuit 11 becomes H level. Next, electric lock monitoring
LED19 emits light. Assuming that the electric lock open / close monitor circuits 6 and 7 are at the H level in a state where the electric locks 22 and 25 are unlocked, the light emission of the electric lock monitoring LED 19 is an unlock display.
ここで、電気錠監視LED19が発光し、発光原因がよく
わからないものとする。電気錠監視LED19の発光を見て
選局ボタン15aを押下すれば、選局回路15はCPU20の制御
により閉成された通話路スイッチSW1を介して通話用ケ
ーブルL1と通話路ネットワーク16を接続する。これによ
り送受器17とドアホン20のスピーカ20a、マイク20bとの
間で通話することができる。通話路が形成されると、通
話監視回路3のコンパレータ4が動作する。コンパレー
タ4が動作するとアンド回路9が非能動となり、アンド
回路11の一方の入側がLレベルとなる。アンド回路11の
一方の入側がLレベルとなるとオア回路8の出側がHレ
ベル、Lレベルのいずれの場合もアンド回路11は能動と
なれない。しかしながら、コンパレータ4の能動により
アンド回路10の一方の入側がHレベルとなっている。こ
のとき、例えば電気錠22が解錠していると電気錠開閉モ
ニタ回路8の出側がHレベルとなっているので、アンド
回路10は能動となり電気錠監視LED19は発光する。従っ
て電気錠22が解錠していることがわかる。この状態で
解、施錠ボタン18を押下すると電気錠駆動回路18aが動
作し、電気錠22が施錠され電気錠監視LED19は消灯す
る。また、電気錠25が解錠していると電気錠開閉モニタ
回路7の出側がHレベルとなっているので、アンド回路
10は能動とならず電気錠監視LED19は消灯する。このと
きは選局ボタン16aを押下すれば通話監視回路3のコン
パレータ5が能動となり、アンド回路12が能動となり電
気錠監視LED19は発光する。従って電気錠25が解錠して
いることがわかる。この状態で解、施錠ボタン18を押下
すると電気錠25が電気錠駆動回路18aの動作で施錠され
電気錠監視LED19は消灯する。Here, it is assumed that the electric lock monitoring LED 19 emits light and the cause of the light emission is unknown. When the channel selection button 15a is pressed while seeing the light emission of the electric lock monitoring LED 19, the channel selection circuit 15 connects the communication cable L 1 and the communication path network 16 via the communication path switch SW 1 closed by the control of the CPU 20. Connecting. As a result, a call can be made between the handset 17 and the speaker 20a and the microphone 20b of the intercom 20. When the call path is formed, the comparator 4 of the call monitoring circuit 3 operates. When the comparator 4 operates, the AND circuit 9 becomes inactive, and one input side of the AND circuit 11 becomes L level. When one input side of the AND circuit 11 becomes L level, the AND circuit 11 cannot be activated regardless of whether the output side of the OR circuit 8 is H level or L level. However, the active side of the comparator 4 causes one input side of the AND circuit 10 to be at the H level. At this time, for example, when the electric lock 22 is unlocked, the output side of the electric lock open / close monitor circuit 8 is at the H level, and the AND circuit 10 becomes active and the electric lock monitor LED 19 emits light. Therefore, it can be seen that the electric lock 22 is unlocked. When released in this state and the lock button 18 is pressed, the electric lock drive circuit 18a operates, the electric lock 22 is locked, and the electric lock monitoring LED 19 is turned off. When the electric lock 25 is unlocked, the output side of the electric lock open / close monitor circuit 7 is at the H level.
10 is not activated and the electric lock monitoring LED 19 is turned off. At this time, if the channel selection button 16a is pressed, the comparator 5 of the call monitoring circuit 3 becomes active, the AND circuit 12 becomes active, and the electric lock monitoring LED 19 emits light. Therefore, it can be seen that the electric lock 25 is unlocked. In this state, when the lock button 18 is pressed, the electric lock 25 is locked by the operation of the electric lock drive circuit 18a, and the electric lock monitoring LED 19 is turned off.
次に、通話状態では通話監視回路3のコンパレータ4
または5が能動となっているおり、アンド回路10、12の
一方の入側がHレベルとなっている。従って、通話中の
ドアホンの電気錠が解錠していると電気錠開閉モニタ回
路6または7の出側がHレベルとなり、アンド回路10ま
たは12が能動となり電気錠監視LED19は発光する。Next, in the call state, the comparator 4 of the call monitoring circuit 3
Or, 5 is active, and one input side of the AND circuits 10 and 12 is at H level. Therefore, when the electric lock of the intercom during the call is unlocked, the output side of the electric lock open / close monitor circuit 6 or 7 becomes H level, the AND circuit 10 or 12 becomes active, and the electric lock monitor LED 19 emits light.
上記実施例における電気錠22、25を平常時は施錠状態
とし、解錠されてから一定時間経過したら自動的に施錠
される方式とすれば解、施錠ボタンは解錠ボタンとして
機能する。If the electric locks 22 and 25 in the above-described embodiment are normally locked and automatically locked after a certain time has elapsed after unlocking, the unlocking button functions as an unlocking button.
上記実施例におけるドアホン20、23及び電気錠22、25
の設置数は2組に限定しない。Doorphones 20, 23 and electric locks 22, 25 in the above embodiment
Is not limited to two sets.
上記実施例における通話監視回路3はカメラ付ドアホ
ンとし、室内端末TE1にテレビモニタを設けたシステム
では映像信号を検出する映像信号検出回路としてもよ
い。The call monitoring circuit 3 in the above embodiment may be an intercom with a camera, and a video signal detection circuit for detecting a video signal in a system in which a television monitor is provided in the indoor terminal TE 1 .
[発明の効果] 本発明による電気錠付ドアホン装置は、室内端末と、
室内端末に接続された複数のドアホンと、複数のドアホ
ンに対応した扉にそれぞれ設けられた複数の電気錠とを
備え、室内端末には待受状態における複数の電気錠の
解、施錠状態を代表表示する発光素子と、室内端末によ
り選局されたドアホンの1つに対応した電気錠の解、施
錠状態を発光素子により個別表示すると共に個別表示に
応じて電気錠を解、施錠させる解、施錠ボタンとで構成
されているので、1組の電気錠表示部材と操作部材で複
数のドアホンを解、施錠できる効果がある。[Effects of the Invention] An intercom device with an electric lock according to the present invention includes an indoor terminal,
Equipped with a plurality of intercoms connected to the indoor terminal and a plurality of electric locks respectively provided on the doors corresponding to the plurality of intercoms, the indoor terminal represents a plurality of unlocked and locked electric locks in the standby state. Light emitting element to display and unlocking of electric lock corresponding to one of the intercoms selected by the indoor terminal, the locked state is individually displayed by the light emitting element, and the electric lock is unlocked and unlocked according to the individual display, unlocking Since it is composed of a button, there is an effect that a plurality of intercoms can be unlocked and locked by one set of electric lock display member and operation member.
また、電気錠表示部材で待受状態における複数の電気
錠の解、施錠を代表表示すると共に選局による個別表示
を行い、操作部材で個別表示中のドアホンに対応した電
気錠を解、施錠できる効果がある。In addition, the electric lock display member displays the unlocking and locking of a plurality of electric locks in the standby state as a representative and individual display by channel selection, and the operating member can unlock and lock the electric lock corresponding to the intercom that is being individually displayed. effective.
第1図は本発明による電気錠付ドアホン装置の一実施例
を示すブロック図、第2図は従来の電気錠付ドアホン装
置のブロック図である。 18……解、施錠ボタン 19……電気錠監視LED(発光素子) 20、23……ドアホン 21、24……扉 22、25……電気錠 TE1……室内端末FIG. 1 is a block diagram showing an embodiment of an intercom system with an electric lock according to the present invention, and FIG. 2 is a block diagram of a conventional intercom system with an electric lock. 18 …… Unlock and lock button 19 …… Electric lock monitoring LED (light emitting element) 20,23 …… Intercom 21, 24 …… Door 22,25 …… Electric lock TE 1 …… Indoor terminal
Claims (1)
数のドアホンと、前記複数のドアホンに対応した扉にそ
れぞれ設けられた複数の電気錠とを備え、前記室内端末
には待受状態における前記複数の電気錠の解、施錠状態
を代表表示する発光素子と、前記室内端末により選局さ
れた前記ドアホンの1つに対応した電気錠の解、施錠状
態を前記発光素子により個別表示すると共に前記個別表
示に応じて前記電気錠を解、施錠させる解、施錠ボタン
とを備えたことを特徴とする電気錠付ドアホン装置。1. An indoor terminal, a plurality of intercoms connected to the indoor terminal, and a plurality of electric locks provided on doors corresponding to the plurality of intercoms, respectively. The indoor terminal is in a standby state. The light-emitting element representatively showing the unlocking and locking states of the plurality of electric locks in FIG. 3 and the unlocking and locking state of the electric lock corresponding to one of the intercoms selected by the indoor terminal are individually displayed by the light-emitting element. An intercom device with an electric lock, further comprising: an unlocking device for unlocking and locking the electric lock according to the individual display and a locking button.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2244883A JP2556929B2 (en) | 1990-09-14 | 1990-09-14 | Door phone device with electric lock |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2244883A JP2556929B2 (en) | 1990-09-14 | 1990-09-14 | Door phone device with electric lock |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH04123652A JPH04123652A (en) | 1992-04-23 |
JP2556929B2 true JP2556929B2 (en) | 1996-11-27 |
Family
ID=17125407
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2244883A Expired - Fee Related JP2556929B2 (en) | 1990-09-14 | 1990-09-14 | Door phone device with electric lock |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2556929B2 (en) |
-
1990
- 1990-09-14 JP JP2244883A patent/JP2556929B2/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
JPH04123652A (en) | 1992-04-23 |
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