FR2633731A1 - DEVICE FOR READING DOCUMENTS, ESPECIALLY GEOGRAPHICAL MAPS, IN A HELICOPTER, SPORTS AIRCRAFT OR ANY OTHER AIRCRAFT - Google Patents

Abstract

Device for reading documents, in particular geographic maps, in a helicopter, sports plane or any other airplane, characterized in that the magnifying arm 1 consists of a flexible part 2 and a telescopic part 3 which can be deployed or tightened by means of a continuous one-hand control 4, in that for using the device in different types of aircraft, the maximum and minimum lengths of the magnifying arm 1 have given values, and in that the operating and fixing panel 5 is mechanically connected to a socket 14 protected against accidental contact, for the power supply.

Description

The subject of the invention is a device for the

  reading documents, in particular geographic maps

  ques, in a helicopter, a sports plane or any other plane, using a reading magnifier illuminated by a lamp, the reading magnifier and the lamp being arranged at one end of a movable magnifying arm, the other of which end is mechanically connected to an operating and fixing panel comprising control elements, and an electrical connection is provided between the

  lamp and part of the control elements.

  In practice, a device of this type is known in which the movable magnifying glass arm is a flexible tube placed between an illuminated reading magnifying glass and an operating and fixing table. The drawback of this device is that it is not designed for permanent use, since the dual use of flexible and undersized arms does not provide sufficient rigidity to allow the magnifying glass to be adjusted. This device also has the disadvantage of being equipped only with a small and heavy glass magnifier, which makes it possible to read only a small part of the card, and does not make it possible to have a

stable position of the magnifying glass.

  The invention therefore aims to achieve a device of the aforementioned type ensuring a stable position for the magnifying glass, and which can be used as a

  sectional device, i.e. an interchanging device

  geable for different types of aircraft.

  This object is achieved according to the invention in that the magnifying arm consists of a flexible part and a telescopic part which can be deployed or tightened by means of a continuous control with one hand, in that to use the device in different types of aircraft, the maximum and minimum lengths of the magnifying glass arm have given values, and in that the operating and fixing panel is mechanically connected to a socket protected against accidental contact, to

the voltage supply.

  The invention has the advantage of making it possible to conveniently extend the magnifying arm, thanks to the continuous telescopic control with one hand. It also has the advantage that a stable position for the magnifying glass can be obtained, which is absolutely necessary for piloting with certainty. This position stability is obtained on the one hand thanks to the subdivision of the magnifying arm into a flexible part and into a telescopic part, and on the other hand thanks to variants of the invention relating to the use of a tilting articulation and rotating between the magnifying glass arm and the

  magnifying glass, as well as a light plastic magnifying glass.

  A variant of the invention provides an easy-to-use mounting socket for the mechanical fixing of the magnifying arm on the maneuvering and fixing panel, which makes it possible to quickly mount or exchange the

device in an airplane.

  A variant according to the invention is characterized

  in that oscillation dampers and components

  electrical elements of control elements, such as a device for continuously adjusting the luminous intensity of the lamp, or a lighting device for reading the inscriptions on the operating and fixing board, are placed in a shoemaker

  closed, one wall of which is formed by the control panel

  glass and fixing. We thus obtain in advance

  geuse, mechanical and electrical protection, as well as the possibility of using the device during night flight. The other advantageous variants of the invention reside in a captive protective case for the magnifying glass and in a protective cover which can be made of felt, for example with hook closure for the voltage supply socket, placed for example in

  the operating and fixing table. Thanks to the use

  sation of the captive magnifying glass case, the magnifying glass is protected against mechanical damage. It also ensures that the magnifying glass does not act like a burning glass when the plane is stopped in the sun. While using the magnifying glass, the case can be rolled around

  of the arm and fixed by hook closures. The intro-

  duction of the socket protected against accidental contact

  such increases safety of use, that is to say that the supply voltage is transmitted by sockets

  females protected from accidental contact.

  The use of the cover with hook closure also protects the plug against dust and

  contacts (in the event of theft without a magnifying glass).

  Various other features of the invention

  emerge from the detailed description which follows. A

  exemplary embodiment of the invention is shown by way of nonlimiting example in the appended drawing in which: FIG. 1 is an overall view of the device, and FIG. 2 is a top view of the operating and fixing table, in section along line AA

of figure 1.

  The magnifying arm designated by 1 consists of a flexible part 2 and a telescopic part 3

  can be deployed and tightened by means of a

  One-handed 4 hand. In the area of the telescopic part 3, a magnifying glass 6, preferably made of material

  plastic, and a lamp 7 illuminating the magnifying glass 6, are

  mechanically fixed by a tilting and rotating joint 8. The other end of the magnifying glass arm 1, the maximum length and the minimum length of which have given values so that they can be used in different types of aircraft, is mechanically fixedly connected to a maneuvering and fixing table 5, by a mounting socket 9. The maneuvering and fixing table 5 which can be part of a closed shoemaker 12, includes a lighting device 13 for reading his inscriptions, a socket 14 shown in the drawing for the voltage supply, placed in a wall of the case 12, as well as control elements which are electrically connected to the lamp 7, by a non-cable

  shown, for example passing through the magnifying glass arm 1.

  As control elements, an interrup-

  tor 10 as well as a device 11 for the continuous adjustment of the light intensity of the lamp 7. The above-mentioned protective elements for the lamp 7 and the voltage supply socket, not illustrated in the drawing, do not not shown in the drawing. This also applies

  to vibration dampers and electrical components

  triques or electronic control elements, placed in the case 12, one wall of which is formed by the

  operating and fixing table 5.

Claims (10)

  1. Device for reading documents, in particular geographical maps, in a helicopter, a sports aircraft or any other plane, by using a reading magnifier lit by a lamp, the reading magnifier and the lamp being arranged at one end of a movable magnifying arm, the other end of which is mechanically connected to an operating and fixing panel comprising control elements, and an electrical connection being provided between the lamp and part of the control, characterized in that the magnifying arm (1) consists of a flexible part (2) and a telescopic part (3) which can be deployed or   tightened by means of a one-hand control (4) conti-   naked, in that to use the device in different   many types of aircraft, the maximum and minimum lengths of the magnifying arm (1) have given values, and in that the operating and fixing panel (5) is mechanically connected to a socket (14) protected against   accidental contacts, for voltage supply.   2. Device according to claim 1, character-   rised in that a tilting and rotating articulation (8) is provided between the magnifying arm (1) and the magnifying glass (6) and the lamp (7).   3. Device according to claim 1 or 2, characterized by an easy-to-use mounting socket (9) for the mechanical fixing of the magnifying arm (1)   on the operating and fixing panel (5).   4. Device according to claim 1 or 2, characterized by the use of a magnifying glass in material plastic (6) light.   5. Device according to claim 1, 2 or 4, characterized in that it is provided for the magnifying glass (6) a captive protective case.   6. Device according to claim 1 or 3, characterized in that the electrical components and vibration dampers are arranged in a closed housing (12), one wall of which is formed by the operating and fixing panel (5). 7. Device according to claim 1, 2, 3 or 6, characterized in that the operating and fixing panel (5) comprises a device (11) for adjustment   continuous light intensity of the lamp (7).   8. Device according to claim 1, 2, 3, 6 or 7, characterized in that a lighting device (13) is provided to allow the inscriptions worn to be seen   on the operating and fixing panel (5).   9. Device according to claim 1, character-   laughed at by a protective cover for the socket.   10. Device according to claim 9, character-   laughed in that the protective cover is made of felt with hook closure.