DE102014113646A1 - Escape route safety device - Google Patents

Abstract

The invention relates to an escape route security device for securing a door in an escape route with an emergency button (1) and a lockable and in particular releasable locking device for locking and / or releasing the door, said emergency button (1) being controlled by a control device (14) controllable touch-sensitive display (13), preferably touchscreen, and the control device (14) has an alarm mode in which the control device (14) upon actuation or touching the display (13) generates an alarm and / or the locking device activates to release a lock. The control device (14) can be switched from the alarm mode to an operating mode in which the control device (14) displays a control bar or control button in the alarm mode on the display (13) and generates no alarm when the control bar or control button is touched, but switches to an operating mode on.

Description

The invention relates to an escape route security device according to the features of the preamble of claim 1.

The EP 2 518 747 A1 shows an escape route security device with a displaceably mounted in a housing display. The slidable display is configured as an emergency button and controls a locking element for releasing a lock of a door when the display is actuated or touched when the emergency button is armed.

The invention has for its object to provide an escape route safety device that is universally applicable and easy to use.

According to the invention this object is achieved with an article according to the features of claim 1.

There is an escape route safety device for securing a door in an escape route with an emergency button and a switchable from the emergency button,
in particular releasable locking device for locking and / or releasing the door proposed
wherein the emergency button is arranged in or on a housing and a controllable by a control device touch-sensitive display preferably touchscreen, which is slidably mounted in the housing and the control device has an alarm mode in which the control device upon actuation or a touch of the display an alarm generated and / or controls the locking device for releasing a lock, wherein it is proposed
the control device can be switched from the alarm mode into an operating mode in that the control device displays a control bar or a control knob in the alarm mode and generates no alarm when the control bar or the control knob is touched, but switches to an operating mode.

When the display is actuated, the latter is pressed or displaced into the housing, preferably pressed or displaced by a certain distance into the housing. The actuation is preferably carried out against the force of a spring, which acts on the display in the housing in a neutral position. Touching the display touches the display with little force, so there is no shift of the display.

The proposed escape route safety device has the advantage that the emergency button has a control device which makes it possible to easily change from an alarm mode to an operating mode. Particularly when the door is locked or when the emergency exit device is armed, ie when the emergency button is in the alarm mode, it is often difficult to change to another operating mode. In the prior art, therefore, a key switch or other coded input device is often used to turn off the alarm mode. However, as the alarm mode is completely switched off during this procedure, safety suffers.

In alarm mode, the door of the escape route is locked by a locking device. By pressing the emergency button, the controller controls the locking element to unlock the door and triggers an alarm. In the alarm mode, the locked door should as far as possible be unlocked via the emergency button, so that an escape is possible in an emergency.

It is envisaged that the alarm mode can only be switched on when the door is locked. In particular, the escape route safety device has a locking sensor which is connected to the control device. Only when the locking sensor detects a locking of the door, the control device switches to the alarm mode.

It can be provided that the control device in alarm mode when touching the display outside the range of the control bar or the control button generates a pre-alarm and after a certain, in particular adjustable period of time, if the touch persists, generates a main alarm and the locking element to unlock the door controls. The pre-alarm alerts a user that the emergency button is armed and soon a main alarm is triggered and / or the door is unlocked. Thus, the pre-alarm serves on the one hand to confirm an operation for the operator. On the other hand, the pre-alarm prevents accidental triggering of an alarm.

Different operating modes can be provided; the control device can preferably be switchable into different operating modes or have different operating modes. In an operating mode, generally an operation of the escape route safety device or the emergency button or the control device can take place. It may be provided an operating mode, which allows programming and or configuration of the control device. It may also be provided an operating mode that allows maintenance or diagnosis. Furthermore, an operating mode can be provided which makes it possible for an authorized person to walk on the door without triggering an alarm, thus enabling access control.

In an advantageous embodiment it can be provided that the touch-sensitive display is designed as a sliding display and has an electrical switching contact, which is actuated when moving the display and the control device generates a main alarm when pressing the electrical switch contact and controls the locking element to unlock the door.

It may further be provided that the control device in the alarm mode, the display for displaying a stylized emergency button controls and only generates a pre-alarm when a touch of the display takes place in the stylized emergency button. This realizes a selective pre-alarm.

In particular, it can be provided that the control device has a plurality of operating modes. The control device is designed so that it can be selectively switched to a desired operating mode, which can be selected from a group of the plurality of operating modes.

The control device can be programmable in an operating mode, preferably an operating mode designed as a programming mode.

The control device may be configurable in an operating mode, preferably an operating mode designed as a configuration mode.

The control device may have an operating mode with a troubleshooting diagnostic function.

An operating mode of the control device can be designed as an access control mode. The control device can display a keypad for entering an access authorization code in the access control mode on the display.

A simple operation can be achieved in one embodiment by providing that the control device displays in a control mode on the display a selection menu with several submenu points and is designed so that the control device is switchable by selecting a submenu point in an operating mode corresponding to the submenu point.

In order to achieve an increased operating safety can be provided in an embodiment that the control device in an operating mode on the display a code input field, preferably a keypad for entering an authorization code displays and is designed so that the controller only after entering a correct authorization code in a corresponding Operating mode, in particular an access control mode and / or programming mode and / or diagnostic mode and / or configuration mode is switchable.

It can further be provided that the control device has a wireless receiving device for receiving identification codes or is connected to a wireless receiving device, preferably an RFID receiving device for receiving identification codes, and can be switched from an alarm mode to an operating mode after receipt of a correct identification code. Thus, the control device can be wirelessly, for example by an RFID transponder or RFID tag, switchable into an operating mode.

It can be provided that the operating mode of the control device is designed as a programming mode and the control device in the programming mode displays on the display an input menu for the input of parameters and / or commands.

In a further advantageous embodiment, it can be provided that the control device has an operating time counter, and the control device triggers the operating time counter when switching from the alarm mode to the operating mode and the operating time counter switches back the control device from the operating mode to the alarm mode after a certain, in particular preselectable period of time. This prevents the alarm mode from being accidentally switched off permanently, even if only a short changeover to an operating mode is desired. The pre-selectable time span can be in the range of 15 seconds to 5 minutes. In practice, a period of 30 seconds to 1 minute has proved to be advantageous.

It can be provided that, in the operating mode, the control device triggers or resets the operating time counter during an input. This prevents the alarm mode from being set early in the event of prolonged operation.

In a further advantageous embodiment it can be provided that the control device has an alarm timer and a door sensor for monitoring an opening of the door. The control device is designed such that it triggers the alarm timer in the alarm mode when generating the main alarm and / or releasing the locking device and the latter actuates the control device after a certain, in particular presettable alarm period for resetting the main alarm and locking the locking device, if during the alarm period the door sensor detects no opening of the door. Thus, a permanent alarm is triggered only when actually an opening or an inspection of the door takes place. If the door remains closed, the alarm is reset and the controller remains in alarm mode.

It is preferably provided that the control device switches permanently into an alarm-open mode if an opening of the door takes place within the alarm period.

The control device can display a permanent alarm opening signal in the alarm-open mode on the display and / or an optical status display.

It can be provided that the control device is designed such that the control device can be switched back into the alarm mode or into a basic mode only after a code input or actuation of a key switch from the alarm-open mode.

It can further be provided that the control device is designed such that it indicates the remaining time remaining until the main alarm is triggered in the alarm mode after the triggering of a pre-alarm on the display. This note gives an operator additional user assistance.

The control device can be designed so that it releases the locking device in the alarm mode delayed and displays on the display the remaining time until the release of the locking device.

An application of the emergency exit device according to the invention can be done to secure escape routes with single-leaf or double-leaf doors or sliding doors in buildings. The doors can have manually openable door leaves or motor-driven door leaves. As locking elements for the doors mechanical locking elements, eg. Locks but also electromechanical locking elements, such as door openers or holding magnets for RWS (escape route) systems can be used.

The invention will now be explained in more detail with reference to exemplary embodiments. Show it:

1 an embodiment of an emergency button of an escape route security device according to the invention in a perspective view;

2 the emergency button in 1 in a sectional view;

3 a mounting frame of the emergency button in 1 with a display in a perspective front view;

4 the mounting frame in 3 in a perspective rear view;

5 a caseback of the emergency button in 1 in perspective view;

6 a middle part of the emergency button in 1 in perspective view;

7 a cover of the emergency button in 1 ;

8th the emergency button in 1 in a perspective view from below;

9 an adapter plate of the emergency button in 1 ;

10 the escape route security device in a schematic representation.

The 1 to 9 show an emergency button 1 which can be used in an escape route security device for securing a door in an escape route with a locking device which can be switched and / or actuated by an emergency button.

The emergency button 1 has a housing 11 on, which comprises a plurality of connectable by clipping or latching parts, one part as a wall-facing housing bottom 111 and a part as a cover frame 112 and a part arranged between the housing bottom and cover frame middle part 113 is trained.

Between the case back 111 and the middle part 113 a latching connection is formed, which is not solvable with normal tools. 6 shows the middle part of the housing 113 , which is formed as a frame, on its longitudinal sides ladder-shaped locking elements 113r are arranged with recesses. The recesses act with protruding locking elements 111r together, attached to the inner wall of the case back 111 are arranged ( 5 ). The locking elements 111r engage in the recesses of the locking elements 113r when the middle part of the housing 113 on the case back 111 is attached. At the same time one between the middle part of the housing 113 and the caseback 111 arranged light bar 114 fixed. The light bar 114 is formed of an optically transparent plastic. It is closed around the case 11 running around. The light bar 114 is via a positive connection between the middle part 113 and the caseback 111 supported. For this purpose, the light bar in each case on the front side a web, which in a recess of the housing bottom 111 or the middle part 113 engages as in 2 is apparent.

When assembling the housing 11 becomes the light bar 114 between the case back 111 and the middle part 113 stored. After the subsequent Verklipsen the housing bottom 111 with the middle part 113 becomes the light bar 114 kept safe. The light bar 114 is illuminated by LEDs (light emitting diodes), which are mounted on a circuit board in the housing 11 are arranged. There are multicolor LED's arranged on the board, by the control device 14 be controlled to realize a multi-colored status display.

The locking connection between the cover frame 112 and the middle part of the housing 113 is detachable by inserting a special tool, not shown in through holes 114d in the long sides of the light bar 114 are arranged (see 8th ). So can the cover frame 112 simply exchanged or changed.

In the in the 1 to 9 illustrated embodiment, the housing bottom 111 as a flush-mounted floor with a flush-mounted insert 116 trained, in a flush box 2 can be used. For mounting the housing 11 is an adapter plate 115 provided, via fastening means with the flush-mounted box 2 is connectable and recordings 115a for fastening the housing 11 has (see 9 ). As fastening means may preferably be provided fastening screws with a circular cross-section screw head, which in the adapter plate 115 arcuate mounting slots 115s pass through and can be screwed into threaded holes in the flush-mounted box 2 are formed. The mounting slots 115s each have a formed as a through hole end portion whose inner diameter is greater than the outer diameter of the screw head of the fastening screw. The adapter plate 115 has a central opening 115o on, through which the sub-plot insert 116 of the housing 11 (please refer 1 ) and into the flush-mounted box 2 reaching in.

The adapter plate 115 is designed so that it is also connectable to a cavity box.

Next, the adapter plate 115 Through holes 115d for fastening the adapter plate 115 on a wall, with the emergency button 1 in this case has a surface of the housing floor.

In the case 11 There is a sabotage switch arranged to lift or remove the case 11 from the adapter plate 115 detected. The tamper switch is with the controller 14 connected, so that they can generate a sabotage alarm.

In the case 11 is a display 13 arranged with other assemblies on a chassis 117 is mounted (see 3 ). The chassis 117 is together with the display 13 designed as a replaceable unit and in the housing 11 slidably mounted.

The chassis 117 is from feathers 117f in a neutral position, in which it is on the inside of the housing 11 is applied. The chassis has stops 117an on in the neutral position on the inside of the case 11 issue.

The function of the emergency button is realized by pressing on the front of the display 13 the chassis 117 and with it the display 13 against the force of the springs 117f in the case 11 is pushed into it. At the end of the displacement is an electrical switching contact 12 operated to release a locking device and / or generate an alarm, similar to a conventional emergency button.

The shift takes place against the force of springs to achieve an ergonomic operation. The springs designed as leaf springs 117f are on the back wall of the chassis 117 arranged. The feathers 117f Alternatively, they can be designed as helical compression springs, as in 8th shown. It is also possible to use leaf springs and coil springs side by side in a housing.

The chassis 117 is on ironing 117b on the back wall of the chassis 117 arranged and on the inner wall of the housing bottom 111 are supported in the housing 11 guided in parallel. The chassis 117 is therefore without tilting into the housing 11 insertable (see 3 and 4 ). The temples 117b are formed as a double U-shaped bracket, which are pivotally mounted at their end portions and the connecting portion on the inner wall of the housing bottom 111 slides when the chassis 117 is moved. the display 13 is through on the cover frame 112 trained inlet slopes 112s (please refer 2 ) centered in the cover frame, with the leading edges of the chassis 117 with the inlet slopes 112s interact.

On the chassis 117 is a control device 14 arranged. This includes a graphics board 117g for controlling the display 13 and a control board 117s , On the control board 117s are electrical interfaces 117p arranged with connectors acting as ports for signal transmission between the control board 171S and the graphics board 117g and between the control board 171S and Sensors and / or switches and / or actuators are used. In addition, the control device 14 a digital interface for connection to a digital bus. Over the bus is the controller 14 connectable with further escape route security devices and / or with central control or access control systems. the display 13 is designed as a touch-sensitive display or touchscreen on which, for example, a stylized emergency key and / or a keypad for entering an access authorization code can be displayed or is, as described in more detail below.

Furthermore, the control device comprises 14 an optical display module with multicolor LEDs on the control board 117s are arranged. These illuminate the light bar 114 and are from the controller 14 controlled in order to realize a status display and / or an alarm display. For example, the light bar is illuminated green when the door is released and red when the door is locked.

In the 10 the escape route safety device is shown in a schematic representation. This emergency exit device has two escape routes. There is a door in every escape route. Each door has a door leaf 21 on, over straps on a door frame 22 is rotatably mounted. At the upper end of the door is acting between door frame and door locking device in the form of a magnet 23 arranged. When energized, the magnet locks the door and prevents the door from opening. Will the magnet 23 de-energized, the door is accessible via a conventional door lock.

In the area of each escape route is the emergency button 1 mounted on a wall. The emergency button 1 is arranged approximately at the height of the door lock in the region of the closing edge of a door leaf. The emergency button 1 each has a housing in which the control device 14 is included.

About an electrical connection line is the emergency button or the control device with the locking element 23 connected.

Via a digital CAN bus 4 are the emergency keys with each other and with an access control system 3 connected. To the bus 4 is also a time generator 31 connected, which sends a time signal to the bus 4 feeds.

The following are individual functions of the control device 14 described in more detail.

The control device 14 is switchable from an alarm mode to an operating mode. In alarm mode, the controller displays 14 on the touch-sensitive display 13 a stylized emergency button and a control bar or a control knob on. When touching the control bar or the control knob no alarm is generated, but the controller 14 is switched to operating mode.

In the area of the light bar 114 or the optical display module, an RFID receiving device is arranged and with the control device 14 connected. RFID transponders (RFID tags) can be read out via the RFID receiving device and can be used by the control device 14 to be controlled. So is the controller 14 switchable by a valid RFID tag in an operating mode or in a programming mode or in an access control mode.

As in 2 is shown in the housing 11 in the area of the flush-mounted box, a connection board 117a arranged. This connector board has clamps to the controller 14 or the emergency exit device to contact electrically. the display 13 or the chassis 117 is via a movably routed ribbon cable 118 with the connection board 117a connected.

The control device 14 generated in alarm mode when touching the display 13 Outside the area of the control bar or the control button, a pre-alarm and generates after a certain period of time if the contact persists, a main alarm and controls the locking element to unlock the door. The time span is adjustable.

The pre-alarm may also be provided as a selective pre-alarm by only touching the display 13 in the area of the control device 14 on the display 13 displayed emergency button triggers a pre-alarm. After the adjustable period of time, if the touch persists, is by the controller 14 triggers a main alarm. In parallel with the triggering of the main alarm controls the controller 14 a locking element for unlocking the door.

When moving the display 13 by pressing on the front of the display 13 becomes an electrical switching contact 12 pressed on the control board 117s is arranged. The control device 14 generated in alarm mode when operating the electrical switch contact 12 a main alarm and controls the locking element to unlock the door.

The triggering of the main alarm can optionally via the operation of the electrical switch contact 12 or about the pre-alarm and continuous touching the display 13 respectively.

The control device 14 is programmable and / or configurable in an operating mode. As part of a programming or configuration of the control device 14 can have one on display 301 displayed operating program parameters are entered or changed or individual functions of the control device 14 be activated or deactivated. For example, it can be set via parameters that the pre-alarm is switched as a selective pre-alarm, or the time until the main alarm is triggered can be set or adjusted.

The operating mode of the control device 14 is designed as an access control mode and the control device 14 shows in access control mode on the display 13 a keypad for entering an access authorization code. Upon entry of an authorized access authorization code, the control device controls 14 a locking element for unlocking the door, without an alarm is triggered.

The control device 14 has a rewritable log store to store events. To do this, the controller provides 14 Events, such as an alarm message or an opening of the door or an entry of an access authorization code with a time information and stores this associated date in the log memory.

The control device 14 has an operating time counter, wherein the control device 14 triggers the operating time counter when switching from alarm mode to operating mode. The operating time counter switches after a certain, in particular preselectable period of time, the control device 14 back from the operating mode to the alarm mode.

The control device 14 In operating mode, triggers the operating time counter during an input or resets the operating time counter.

The control device 14 has an alarm timer and a door sensor for monitoring an opening of the door, wherein the control device 14 in alarm mode when generating the main alarm and / or releasing the locking device triggers the alarm timer and this the control device 14 after expiry of a certain, in particular presettable alarm period for resetting the main alarm and for locking the locking device controls if during the alarm period, no opening of the door has occurred.

The control device 14 switches permanently in an alarm-open mode if the door has been opened within the alarm period.

The control device 14 shows in alarm open mode on the display 13 and / or an optical status indicator a permanent alarm opening signal. As optical status indicator is in the in 1 to 9 illustrated embodiment, the light bar 114 intended.

The control device is designed so that it can be switched back into the alarm mode or into a basic mode only after code input or actuation of a key switch from the alarm-open mode. The alarm-open mode thus simulates the known mechanical locking of the emergency button by a conventional bus terminal.

In alarm mode, the controller displays 14 after triggering a pre-alarm on the display 13 the remaining time until the main alarm is triggered. This is done by, for example, the control device 14 a bar decreasing synchronously with the remaining time or a decreasing circle on the display 13 displays. It can also be displayed directly the remaining time in seconds.

The control device 14 In the alarm mode releases the locking device with a delay and displays the remaining time remaining on the display until the locking device is released.

The control device 14 has a bus interface, via which it can be connected to a digital bus. The control device can send and / or receive status messages and / or alarm messages via the digital bus. In addition, the control device 14 control a locking device and / or an optical and / or acoustic alarm via the digital bus. The control device 14 receives a time signal via the digital bus. This is done by the controller 14 evaluated and linked with status messages or alarm messages by the control device 14 Connect messages and / or events with a time information obtained from the time signal and sends them as a connected date via the bus interface and / or stores in a local memory.

In order to bridge the times in which no time signal can be received via the digital bus, the control device 14 a time counter. This time counter is synchronized at short intervals with the time signal received via the bus interface. Thus it can be dispensed with its own emergency power supply by batteries or capacitors.

The control device 14 is switchable in an access control mode and connects occurring in the access control mode messages and / or Timestamp events and send them via the bus interface and / or store them in a local access control store.

Connected to the bus is a control unit which generates the time signal and sends it to the bus via the bus interface.

The control center is connected to the Internet and generates the time signal, for example, based on a time server available on the Internet.

If there is no connection to the Internet, a time signal generator is connected to the bus. The time signal generator has a clock module and generates the time signal based on the time supplied by the clock module. The time signal generator then sends the time signal to the bus via a bus interface.

The time signal generator has its own emergency power supply. The emergency power supply can have, for example, a rechargeable accumulator and / or a capacitor.

Several emergency buttons, each with its own control device, can be connected to the bus and these multiple control devices can be synchronized with one another by the time signal.

It is also contemplated that multiple emergency buttons will synchronize with each other through an event, such as an alarm, a main alarm, or a sabotage alarm.

The time generator can be integrated into an emergency button, in particular integrated in a housing of an emergency button.

LIST OF REFERENCE NUMBERS

1

 emergency button

2

 Flush-mounted box

11

 casing

12

 switching contact

13

 display

14

 control device

111

 caseback

111r

 locking element

112

 Cover

112s

 run-in slope

113

 midsection

113r

 locking element

114

 light bar

114d

 Through Hole

115

 adapter plate

115a

 admission

115d

 Through Hole

115o

 central opening

115s

 mounting slot

116

 Flush-

117

 chassis

117a

 connection board

117an

 attack

117b

 hanger

117f

 feather

117g

 graphics board

117p

 port

117s

 control board

118

 Ribbon cable

2

 Escape route safety device

21

 door

22

 doorframe

23

 locking device

3

 Access control panel

31

 time server

4

 Can-Bus

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• EP 2518747 A1 [0002]

Claims (19)

Emergency exit device for securing a door in an escape route with an emergency button ( 1 ) and one of the emergency button ( 1 ) switchable, in particular releasable locking device for locking and / or releasing the door, wherein the emergency button ( 1 ) in or on a housing ( 11 ) and one of a control device ( 14 ) controllable touch-sensitive display ( 13 ), preferably touch screen, which in the housing ( 11 ) is slidably mounted, and the control device ( 14 ) has an alarm mode in which the control device ( 14 ) when operating or touching the display ( 13 ) generates an alarm and / or activates the locking device for releasing a lock, characterized in that the control device ( 14 ) is switchable from the alarm mode to an operating mode by the control device ( 14 ) in alarm mode on the display ( 13 ) displays a control bar or a control knob and generates no alarm when touching the control bar or the control knob, but switches to an operating mode. Emergency exit device according to claim 1, characterized in that the control device ( 14 ) in alarm mode when touching the display ( 13 ) generates a pre-alarm outside the range of the control bar or the control knob and after a certain, in particular adjustable period of time, if the contact persists, generates a main alarm and controls the locking element to unlock the door. Emergency exit device according to claim 1 or 2, characterized in that the touch-sensitive display ( 13 ) an electrical switching contact ( 12 ), which when moving the display ( 13 ) and the control device ( 14 ) upon actuation of the electrical switch contact ( 12 ) generates a main alarm and controls the locking element to unlock the door. Emergency exit device according to one of claims 1 to 3, characterized in that the control device ( 14 ) the display ( 13 ) to display a stylized emergency button and only generates a pre-alarm when a touch of the display ( 13 ) takes place in the area of the stylized emergency button. Emergency exit device according to one of the preceding claims, characterized in that the control device ( 14 ) has a plurality of operating modes, preferably selectively in an operating mode of the plurality of operating modes is switchable. Emergency exit device according to one of the preceding claims, characterized in that the control device ( 14 ) in an operating mode on the display ( 13 ) indicates a selection menu with several submenu items and is designed such that the control device ( 14 ) is switchable by selecting a submenu point in an operating mode corresponding to the submenu point. Emergency exit device according to one of the preceding claims, characterized in that the control device ( 14 ) in an operating mode on the display ( 13 ) indicates a code input field, preferably a keypad for entering an authorization code and is designed such that the control device ( 14 ) is switchable only after entering a correct authorization code in a corresponding operating mode, in particular an access control mode and / or programming mode and / or diagnostic mode and / or configuration mode. Emergency exit device according to one of the preceding claims, characterized in that the control device ( 14 ) has a diagnostic function in an operating mode and / or is configurable. Emergency exit device according to one of the preceding claims, characterized in that an operating mode of the control device ( 14 ) is designed as an access control mode and the control device ( 14 ) in the access control mode on the display ( 13 ) indicates a keypad for entering an access authorization code. Emergency exit device according to one of the preceding claims, characterized in that the control device ( 14 ) has a wireless receiving device for receiving identification codes or is connected to a wireless receiving device for receiving identification codes and still receiving a correct identification code from the alarm mode is switched to an operating mode. Emergency exit device according to one of the preceding claims, characterized in that an operating mode of the control device ( 14 ) is designed as a programming mode, the control device ( 14 ) in programming mode on the display ( 13 ) displays an input menu for entering parameters and / or commands. Emergency exit device according to one of the preceding claims, characterized in that the control device ( 14 ) has an operating time counter, and the control device ( 14 ) the operating time counter when switching from Alarm mode triggers into the operating mode and the operating time counter after a certain, in particular preselected period of time, the controller switches back from the operating mode in the alarm mode. Emergency exit device according to claim 12, characterized in that the control device switched into an operating mode ( 14 ) triggers or resets the service counter during an entry. Emergency exit device according to one of the preceding claims, characterized in that the control device ( 14 ) has an alarm timer and a door sensor for monitoring an opening of the door, wherein the control device ( 14 ) is designed such that it triggers the alarm timer in the alarm mode when generating the main alarm and / or releasing the locking device and the control device ( 14 ) upon expiry of a certain, in particular presettable, alarm period for resetting the main alarm and for locking the locking device, if, during the alarm period, the door sensor does not detect opening of the door. Emergency exit device according to claim 14, characterized in that the control device ( 14 ) is arranged to permanently switch to an alarm-open mode when the door has been opened within the alarm period. Emergency exit device according to claim 14 or 15, characterized in that the control device ( 14 ) is designed so that in the alarm-open mode on the display ( 13 ) and / or an optical status indicator indicates a permanent alarm opening signal. Emergency exit device according to one of claims 14 to 16, characterized in that the control device ( 14 ) is designed so that it can be switched back into the alarm mode or into a basic mode only after code input or actuation of a key switch from the alarm-open mode. Emergency exit device according to one of the preceding claims, characterized in that the control device ( 14 ) is designed so that in the alarm mode after triggering a pre-alarm on the display ( 13 ) indicates the remaining time until the main alarm is triggered. Emergency exit device according to one of the preceding claims, characterized in that the control device ( 14 ) is designed so that it releases the locking device delayed in the alarm mode and on the display ( 13 ) indicates the remaining time remaining until the locking device is released.

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