EP1045353B1 - Photozelle - Google Patents

Photozelle Download PDF

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Publication number
EP1045353B1
EP1045353B1 EP00107054A EP00107054A EP1045353B1 EP 1045353 B1 EP1045353 B1 EP 1045353B1 EP 00107054 A EP00107054 A EP 00107054A EP 00107054 A EP00107054 A EP 00107054A EP 1045353 B1 EP1045353 B1 EP 1045353B1
Authority
EP
European Patent Office
Prior art keywords
shell
axis
photocell
projector
wings
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
Application number
EP00107054A
Other languages
English (en)
French (fr)
Other versions
EP1045353A2 (de
EP1045353A3 (de
Inventor
Matteo Cardin
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Cardin Elettronica SpA
Original Assignee
Cardin Elettronica SpA
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Cardin Elettronica SpA filed Critical Cardin Elettronica SpA
Publication of EP1045353A2 publication Critical patent/EP1045353A2/de
Publication of EP1045353A3 publication Critical patent/EP1045353A3/de
Application granted granted Critical
Publication of EP1045353B1 publication Critical patent/EP1045353B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B13/00—Burglar, theft or intruder alarms
    • G08B13/18—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength
    • G08B13/181—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using active radiation detection systems
    • G08B13/183—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using active radiation detection systems by interruption of a radiation beam or barrier

Definitions

  • the present invention relates to a photocell.
  • Photocells which substantially comprise a box-like body constituted by a first half-shell and by a second half-shell which can be mutually coupled.
  • Suitable electric devices which comprise a light source are associated at the first half-shell.
  • the second half-shell has instead a transparent region which allows the light beam to pass.
  • Photocells are known which are used for example to protect a work area, for example road barriers or gate wings or other moving mechanical elements, allowing or preventing the opening of the mechanical element in case of presence of people or objects, in practice monitoring the work area.
  • a photocell which comprises an infrared light source which, in order to protect the work area, can be subjected for example to an adjustment of the light beam on a vertical plane; it is known to arrange inside the photocell, for this purpose, a mirror which by rotating can alter the orientation of the beam.
  • US-A-4,282,430 discloses a reflection-type photoelectric switching apparatus which in the same housing comprises a light projecting and a light receiving devices. This apparatus is used for detecting an object present only in a predetermined detection range which is very small in width and depth and with a light beam that can be adjusted in one plane only.
  • the aim of the present invention is to solve the above-noted drawbacks, eliminating the drawbacks of the cited prior art, by providing a photocell which allows the user to vary the regions to be protected by modifying the orientation of the light beam even after the photocell has been installed, all this being achieved in optimum operating conditions and therefore with constant positioning of the beam even in case of accidental impacts and/or vibrations applied accidentally to the photocell.
  • an object of the present invention is to provide a photocell which has a reduced volume and is therefore structurally compact.
  • Another object of the present invention is to provide a photocell in which the angle that can be given to the light beam can be modified quickly and easily.
  • Another object of the present invention is to provide a photocell which combines with the preceding characteristics that of being reliable and safe in use and of having low manufacturing costs.
  • a photocell which comprises a box-like body constituted by a first half-shell for containing electronic devices and by a second half-shell which has a region which allows the passage of a light beam, characterized in that inside said first half-shell there is a support which is mounted on a first vertical axis and is meant to support a projector or receiver element which is in turn selectively mounted on a second axis which is perpendicular to said first axis.
  • the reference numeral 1 designates the photocell according to the present invention, which comprises a box-like body 2 constituted by a first half-shell 3 and by a second half-shell 4 which can be mutually coupled by means of adapted screws 5 which can be associated, for example, frontally to the second half-shell 4; the stem of the screws can be associated at adapted first seats formed in a first half-shell 3.
  • connection between the first half-shell and the second half-shell can furthermore be facilitated by the presence of adapted tabs 7 which protrude therefrom along its perimeter and are substantially L-shaped, with a free end which can be inserted at complementarily shaped second seats 8 formed inside the second half-shell 4.
  • Suitable electronic devices 9, such as for example electronic circuits, can be arranged within the first half-shell 3; a supporting wing 10 further protrudes toward the second half-shell 4 proximate to the upper end of the first half-shell 3 and supports a light source such as a projector element or a receiver element, designated by the reference numeral 11; the projector element can be constituted by an infrared light source, while the receiver element can be constituted by a receiver for an optical signal.
  • a substantially C-shaped fork 13 is pivoted at right angles to the wing 10 and therefore at a first axis 12; its second wings 14a and 14b are directed away from the wing 10.
  • the light source 11 is rotatably associated between the second wings 14a and 14b and rotates at a second axis 15 which is perpendicular to the first axis 12.
  • Such rotation can be set selectively by the user, since means are provided which are suitable to discriminate the angular arrangement of the photocell; said means are constituted by suitable sets of teeth 16 and complementary sets of teeth 17 which protrude respectively from the lateral surfaces of the light source 11 and from the internal lateral surfaces of the second wings 14a and 14b of the fork 13.
  • a semitransparent region 18 is formed at the light source 11 at the second half-shell 4 and is adapted to allow the passage of the light beam.
  • the invention has achieved the intended aim and objects, a photocell having been provided which can be installed and therefore positioned without special care, since the light beam can be positioned rapidly and in an optimum manner by the operator by turning the fork 13 in order to orientate it on a horizontal plane and by turning the light source 11 in order to orientate it on a vertical plane.
  • the presence of the complementary set of teeth 17 and of the set of teeth 16 further allows to stably select the arrangement of the light source 11 on the vertical plane, thus making the photocell free from malfunctions caused by vibrations and/or accidental impacts.
  • the resulting photocell is furthermore merely very compact as well as reliable and safe in use and has low associated costs.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Gloves (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)
  • Hybrid Cells (AREA)
  • Developing Agents For Electrophotography (AREA)
  • Photometry And Measurement Of Optical Pulse Characteristics (AREA)
  • Image-Pickup Tubes, Image-Amplification Tubes, And Storage Tubes (AREA)
  • Switches Operated By Changes In Physical Conditions (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Claims (5)

  1. Photozelle mit einem gehäuseförmigen Körper (2), der durch eine erste Halbschale (3) zum Aufnehmen elektronischer Geräte und durch eine zweite Halbschale (4) gebildet wird, die einen Bereich aufweist, der den Durchgang eines Lichtstrahls erlaubt, wobei innerhalb der ersten Halbschale ein Träger (13) angeordnet ist, der auf einer ersten vertikalen Achse (12) befestigt ist und dazu bestimmt ist, ein Projektor- oder Empfangselement (11) zu tragen, das entlang einer zweiten Achse (15) drehbar befestigt ist, die senkrecht zu der ersten Achse steht, dadurch gekennzeichnet, dass der Träger (13) um die erste vertikale Achse (12) drehbar gelagert ist, um den Lichtstrahl in einer horizontalen Ebene auszurichten.
  2. Photozelle nach Anspruch 1, dadurch gekennzeichnet, dass ein Tragarm (10) für das Projektorelement oder Empfangselement (11) innerhalb der ersten Halbschale nahe des oberen Endes in Richtung auf die zweite Halbschale hervorsteht.
  3. Photozelle nach Anspruch 2, dadurch gekennzeichnet, dass eine im Wesentlichen C-förmige Gabel (13) mit zweiten Schenkeln (14a, 14b) rechtwinklig an dem Tragarm (10) um eine erste Achse drehbar gelagert ist, die dazu senkrecht steht, und die Schenkel (14a, 14b) der Gabel von dem Tragarm (10) fort gerichtet sind.
  4. Photozelle nach Anspruch 3, dadurch gekennzeichnet, dass das Projektorelement oder Empfangselement drehbar zwischen den Schenkeln (14a, 14b) der Gabel gelagert ist und sich um eine zweite Achse dreht, die senkrecht zu der ersten Achse ist.
  5. Photozelle nach einem der Ansprüche 1 und 4, dadurch gekennzeichnet, dass die Drehung um die zweite Achse durch den Anwender selektiv eingestellt werden kann, wofür Mittel vorgesehen sind, um die Winkelanordnung des Projektor- oder Empfangselements einzustellen und die Mittel durch Zahnsätze und komplementäre Zahnsätze gebildet sind, die von den Seitenflächen des Projektor- oder Empfangselementes bzw. von den inneren Seitenflächen der Schenkel (14a, 14b) der Gabel hervorstehen.
EP00107054A 1999-04-16 2000-04-04 Photozelle Expired - Lifetime EP1045353B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT1999TV000019U IT248101Y1 (it) 1999-04-16 1999-04-16 Struttura di fotocellula
ITTV990019 1999-04-16

Publications (3)

Publication Number Publication Date
EP1045353A2 EP1045353A2 (de) 2000-10-18
EP1045353A3 EP1045353A3 (de) 2001-04-11
EP1045353B1 true EP1045353B1 (de) 2004-06-16

Family

ID=11420560

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00107054A Expired - Lifetime EP1045353B1 (de) 1999-04-16 2000-04-04 Photozelle

Country Status (4)

Country Link
EP (1) EP1045353B1 (de)
AT (1) ATE269568T1 (de)
DE (1) DE60011505D1 (de)
IT (1) IT248101Y1 (de)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3896406B2 (ja) 2002-04-11 2007-03-22 オプテックス株式会社 防犯用センサ装置
FR2855296B1 (fr) * 2003-05-20 2005-08-19 Christian Desliens Photocellule orientale, anti-vandale et etanche
ITTO20040461A1 (it) 2004-07-07 2004-10-07 Deitech S R L Elemento di barriera a radiazione
ITMO20060285A1 (it) * 2006-09-15 2008-03-16 Gi Bi Di Continental S P A Fotocellula ad orientazione regolabile particolarmente per barriere ottiche.

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5931814B2 (ja) * 1978-06-19 1984-08-04 オムロン株式会社 反射形光電スイッチ
DE8702841U1 (de) * 1987-02-25 1987-04-09 Bron Elektronik AG, Allschwil, Basel Aufhängevorrichtung für fotografische Beleuchtungsgeräte
US5245177A (en) * 1991-10-24 1993-09-14 Schiller Norman H Electro-optical system for detecting the presence of an object within a predetermined detection system

Also Published As

Publication number Publication date
EP1045353A2 (de) 2000-10-18
ITTV990019U1 (it) 2000-10-16
ITTV990019V0 (it) 1999-04-16
DE60011505D1 (de) 2004-07-22
ATE269568T1 (de) 2004-07-15
EP1045353A3 (de) 2001-04-11
IT248101Y1 (it) 2002-12-10

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