EP1031527B1 - Emergency light with phosphorescent material for elevator cars - Google Patents

Description

The present invention relates to a device for Ensuring adequate emergency lighting as well sufficient visibility of alarm devices and instruction signs in the event of a power failure in the cabins of people and Freight elevators. Emergency lighting is required because in the event of a power failure, the elevator car comes to a standstill in one Position can take place in which the passengers do not get out can and until the arrival of expert help stay trapped.

Emergency lighting in an elevator car is e.g. in US-A-5 412 542.

Most national and international elevator standards (such as e.g. EN-81) require an elevator in the event of a power failure automatically switching on cabin emergency lighting, which, powered by an accumulator, in the cabin for min. Minimal lighting guaranteed for 1 hour.

US 3,808,499 describes an accumulator emergency power supply device for emergency lighting systems in elevator cars with inventive Functions such as charging voltage monitoring, charging status monitoring, Charge speed control, power failure simulation, etc. Such or similar emergency lighting systems are installed in practically all elevator cars today.

Emergency lighting systems of the type described have some Disadvantages. To keep costs and installation weight low, their capacity is usually on the prescribed minimum power of 1 watt designed to last of an hour. The resulting one Illuminance is enough to certain facilities such as alarm button or intercom can, but is often inadequate to plan appropriately To prevent passengers from feeling panic. Read while waiting for the elevator to relax practically impossible. When the cabin is fully occupied, the light spreads from the usually punctiform light source mostly disturbed by passengers. Besides, it is never complete rule out that the emergency lighting device at Power failure does not work, especially since the emergency lamp relatively inoperable due to vandals can be made. In such a situation, the Passenger does not read the relevant instruction signs, still recognize the alarm button or an intercom. Other disadvantages are that the condition of these systems is to be checked periodically and that the contained therein Accumulators have to be disposed of at great expense.

The present invention relates to an emergency lighting device for elevator cabins that comply with the regulations Requirements met and the disadvantages mentioned not having.

According to the invention, this is achieved in that in the interior such elevator cars phosphorescent at suitable locations Materials in a suitable and sufficient Amount introduced. These are during elevator operation stimulated by the normal cabin lighting and radiate the absorbed energy in the form when they fail from visible light. This radiation takes place in such a way that the desired lighting effect over the duration of more than one hour remains. An emergency lighting device according to the invention contains large-area phosphorescent Components in the form of plastic parts, foils or Paintings (acrylic dispersions), the phosphorescent Pigments, e.g. contain inorganic polycrystalline zinc sulfide.

Such emergency lighting shows in comparison with the mentioned State of the art significant advantages.

First, with the large-area phosphorescent Light sources provide a much more regular illumination of the elevator car achieved than with the usual, punctiform 1-watt emergency lighting lamps. As already mentioned, affects this is especially true when the cabin is full of passengers is busy. Second, with modern phosphorescent materials the decrease in light intensity so that even after 3 hours enough light is still emitted to turn off To cause darkness resulting panic feelings. A third advantage is that such emergency lighting is extremely is puncture-proof as it works without wear and is not dependent on an emergency power supply. The used phosphorescent materials leave a practical unlimited number of excitation and discharge cycles to. A periodic check, as with emergency lighting with lamp and emergency power supply is required gone with this system. Another key aspect is that such a system of phosphorescent components less likely to fail due to vandals can, as the usually used emergency lighting lamps.

The phosphorescent has its own inventive content Execution of parts such as emergency instruction sign, alarm button and intercom. The advantage of one such execution is that these components too Readable or recognizable after several hours of power failure if the light radiation from the emergency lighting large-area phosphorescent components for it not enough anymore.

Fig 1 zeigt den Innenraum einer erfindungsgemässen Personenaufzugkabine (1) mit Blick von der Rückwand (nicht sichtbar) auf den Kabinenzugang. Eine Aufzugkabine besteht im wesentlichen aus einem stabilen Kabinenboden (2), zwei Seitenwänden (3), einer Rückwand, einem Kabinendach (4) mit integrierter Beleuchtungseinrichtung (5), einer Kabinenfront (6) mit automatischer Kabinentüre (7) und einem Bedienungs- und Anzeigenpanel (8). Als Teile der Notbeleuchtung sind in Fig. 1 folgende grossflächigen phosphoreszierende Komponenten erkennbar: die zur im Kabinendach integrierten Beleuchtungseinrichtung (5) gehörenden Reflektoren (9) und Lampenabdekkungen (10), welche in der Erläuterung zu Fig. 2 näher beschrieben sind, sowie eine Leuchtfläche (11) am oberen Rand der linken Kabinenwand, die entweder aus einer selbstklebenden phosphoreszierenden PVC-Folie oder aus einem Anstrich mit einer phosphoreszierende Pigmente enthaltenden Dispersion besteht. Ebenfalls in Fig. 1 dargestellt, eingebaut in das Bedienungs- und Anzeigenpanel (8), sind die Alarmtaste (12) und die Gegensprecheinrichtung (13) mit Mikrophon (14) und Aktivierungstaste (15), die alle mit phosphoreszierenden Schichten so markiert sind, dass sie nach einem Stromausfall noch während mehreren Stunden erkennbar sind. Das Instruktionsschild (16) für den Pannenfall weist entweder phosphoreszierende Schriftzeichen auf üblichem Schild, oder übliche Schriftzeichen auf phosphoreszierendem Schild auf und kann daher bei Stromausfall noch nach einigen Stunden gelesen werden.

Fig. 2 zeigt die bereits erwähnte, im Kabinendach integrierte Beleuchtungseinrichtung (5) im Detail. Am Kabinendach (4) ist mit Schrauben (17) ein Reflektor (9) fixiert, der auch als Montagebasis für die Leuchtstofflampen (18) dient. Dieser Reflektor ist mit einem Dispersions-Anstrich beschichtet, der phosphoreszierende Pigmente enthält. Unterhalb der Leuchtstofflampen, vom Reflektor (9) über Schnappverbindungen (19) gehalten, sind Lampenabdeckungen (10) angebracht, die aus einem transparenten Kunststoff bestehen, der ebenfalls phosphoreszierende Pigmente enthält. Diese Lampenabdeckungen (10) können als Dekorationselemente mit verschiedensten Formen, z.B. als geschlossene Schale (10.1) oder als Gitter (10.2), ausgeführt sein. Mit der hier beschriebenen Anordnung der phosphoreszierenden Elemente in unmittelbarer Nähe der Leuchtstoffröhren wird erreicht, dass deren phosphoreszierende Pigmente optimal angeregt werden, was für ein langdauerndes Nachleuchten bei Stromausfall äusserst wichtig ist.

The invention is explained in more detail below with reference to a drawing:

1 shows the interior of a passenger elevator cabin (1) according to the invention with a view from the rear wall (not visible) of the cabin access. An elevator car essentially consists of a stable car floor (2), two side walls (3), a rear wall, a car roof (4) with integrated lighting device (5), a car front (6) with an automatic car door (7) and an operating and Display panel (8). The following large-area phosphorescent components can be seen in FIG. 1 as parts of the emergency lighting: the reflectors (9) and lamp covers (10) belonging to the lighting device (5) integrated in the cabin roof, which are described in more detail in the explanation of FIG. 2, and a luminous area (11) at the upper edge of the left cabin wall, which consists either of a self-adhesive phosphorescent PVC film or of a paint with a dispersion containing phosphorescent pigments. Also shown in Fig. 1, built into the control and display panel (8), are the alarm button (12) and the intercom (13) with microphone (14) and activation button (15), all of which are marked with phosphorescent layers, that they can still be seen for several hours after a power failure. The instruction sign (16) in the event of a breakdown either has phosphorescent characters on a conventional label or usual characters on a phosphorescent label and can therefore be read after a few hours in the event of a power failure.

2 shows the lighting device (5), already mentioned, integrated in the cabin roof in detail. A reflector (9) is fixed to the cabin roof (4) with screws (17) and also serves as a mounting base for the fluorescent lamps (18). This reflector is coated with a dispersion paint that contains phosphorescent pigments. Below the fluorescent lamps, held by the reflector (9) via snap connections (19), lamp covers (10) are attached, which consist of a transparent plastic that also contains phosphorescent pigments. These lamp covers (10) can be designed as decorative elements with a wide variety of shapes, for example as a closed shell (10.1) or as a grid (10.2). The arrangement of the phosphorescent elements in the immediate vicinity of the fluorescent tubes described here ensures that their phosphorescent pigments are optimally excited, which is extremely important for long-lasting afterglow in the event of a power failure.

It goes without saying that the present list of possible designs of the phosphorescent components, as well as their mounting positions and attachment types is not final.

LIST OF REFERENCE NUMBERS

1

car

2

cabin floor

3

Side wall

4

canopy

5

lighting device

6

front cabin

7

car door

8th

Operating and display panel

9

reflector

10

lamp cover

11

Phosphorescent PVC film

12

alarm button

13

Intercom facility

14

microphone

15

activation button

16

instruction sign

17

screw

18

Fluorescent tube

19

snap

Claims (7)

1. Car (1) for elevator installations containing a car light installation for normal operation and an emergency car light
   characterized in that
   the interior of the car has in suitable positions phosphorescent surfaces (9, 11) or components (10) as emergency car light.
2. Car (1) for elevator installations according to Claim 1 containing one or more alarm devices
   characterized in that
   operating elements (12, 13, 15) serving to give the alarm are coated with phosphorescent materials or consist of materials which contain phosphorescent additives.
3. Car (1) for elevator installations according to Claim 1
   characterized in that
   instruction plates (16) important in the case of a breakdown have either phosphorescent characters on a usual plate or usual characters on a phosphorescent plate.
4. Car (1) for elevator installations according to Claim 1
   characterized in that
   phosphorescent surfaces (11) in the interior consist of self-adhesive plastic foils containing phosphorescent pigments.
5. Car (1) for elevator installations according to Claim 1
   characterized in that
   phosphorescent surfaces (9, 11) in the interior have a coat of paint which contains phosphorescent pigments.
6. Car (1) for elevator installations according to Claim 1
   characterized in that
   its light installation has above the fluorescent tubes (18) a reflector (9) which consists of phosphorescent plastic foils or has a coat of paint which contains phosphorescent pigments.
7. Car (1) for elevator installations according to Claim 1
   characterized in that
   its light installation has below the fluorescent tubes (18) light grilles (10) or transparent covers which are made of material, or have a coat of paint, which contains phosphorescent pigments.

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