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EP2342701B1 - Light receiver device having a shielding device extending on a back side of a substrate - Google Patents

Light receiver device having a shielding device extending on a back side of a substrate Download PDF

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Publication number
EP2342701B1
EP2342701B1 EP08875243A EP08875243A EP2342701B1 EP 2342701 B1 EP2342701 B1 EP 2342701B1 EP 08875243 A EP08875243 A EP 08875243A EP 08875243 A EP08875243 A EP 08875243A EP 2342701 B1 EP2342701 B1 EP 2342701B1
Authority
EP
European Patent Office
Prior art keywords
substrate
shielding device
light receiver
shielding
light
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.)
Active
Application number
EP08875243A
Other languages
German (de)
French (fr)
Other versions
EP2342701A1 (en
Inventor
Urs Riedi
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.)
Siemens AG
Original Assignee
Siemens AG
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 Siemens AG filed Critical Siemens AG
Publication of EP2342701A1 publication Critical patent/EP2342701A1/en
Application granted granted Critical
Publication of EP2342701B1 publication Critical patent/EP2342701B1/en
Active legal-status Critical Current
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Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B17/00—Fire alarms; Alarms responsive to explosion
    • G08B17/10—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means
    • G08B17/103—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means using a light emitting and receiving device
    • G08B17/107—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means using a light emitting and receiving device for detecting light-scattering due to smoke
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B17/00—Fire alarms; Alarms responsive to explosion
    • G08B17/10—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means
    • G08B17/11—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means using an ionisation chamber for detecting smoke or gas
    • G08B17/113—Constructional details
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B29/00—Checking or monitoring of signalling or alarm systems; Prevention or correction of operating errors, e.g. preventing unauthorised operation
    • G08B29/18—Prevention or correction of operating errors
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49826—Assembling or joining

Definitions

  • the present invention generally relates to the technical field of shielding light receivers from electromagnetic interference. More specifically, the present invention relates to a light receiving device, in particular for an optical smoke detector, which light receiving device comprises a light receiver and a shielding device, which are mounted on a common substrate. The present invention further relates to a mounting method for manufacturing a light receiving device of the above type.
  • a hazard detector In order to detect an undesired occurrence of a dangerous situation such as the emergence of a fire early, often danger detectors are used, which are mounted in a hazardous area, for example, within a building at appropriate locations.
  • a hazard detector may also be part of a hazard detection system or a comprehensive building management system which has several peripheral units in addition to a central office.
  • the peripheral units can be connected to the center via a direct and / or an indirect communication connection.
  • the peripheral units can perform various functions, such as the detection of smoke or hazardous gases, the issuing of visual or audible alarms, and / or the acceptance of manual distress messages.
  • smoke detectors offer effective protection against the consequences of a fire in practice. For this reason, smoke detectors are widely used in both commercial and private spaces. This has also been achieved because in the past it has been possible to build reliable smoke detectors in a simple way and with low cost components, so that smoke detectors have become a very inexpensive product.
  • a light beam emitted by a light source for example a light-emitting diode
  • a light receiver for example a photodiode
  • the direct light beam of the light source does not hit the light receiver.
  • the light receiver Since the intensity of the scattered light received by the light receiver is very low, in particular with a low smoke density, the light receiver should have a high sensitivity to the scattered light to be detected and a low sensitivity to electromagnetic interference radiation. This means that the electromagnetic compatibility (EMC) of the light receiver should be as large as possible.
  • EMC electromagnetic compatibility
  • the invention is the device-related object to provide a light receiving device, in particular for an optical smoke detector, which has a particularly high electromagnetic compatibility with electromagnetic interference.
  • An efficient mounting method for manufacturing such a light receiving device will also be described
  • a light receiving device which is particularly suitable for an optical smoke detector.
  • the described light receiving device comprises (a) a planar substrate, (b) a light receiver which is mounted on a front side of the substrate, and (c) a shielding device which is located at least on a front side opposite the front side of the substrate and which is formed so that it at least partially shields electromagnetic interference, which strikes the light receiver through the substrate.
  • the described optical light receiving device is based on the finding that the electromagnetic compatibility of the light receiver can be improved by providing a suitable shielding on the back side of the substrate.
  • This shield is designed such that it attenuates electromagnetic interference radiation, which strikes the substrate from the rear side, at least partially penetrates the substrate and strikes the light receiver.
  • electromagnetic compatibility in this context means the sensitivity of the entire optical light receiving device to electromagnetic interference radiation. Namely, such an interference radiation can falsify the output signal of the light receiver to erroneously assume a light reception or that the measurement signal resulting from an actual light reception can not be output due to a larger interference signal or not correctly.
  • the shielding device located at least also on the rear side of the substrate can be formed and / or shaped in a variety of ways.
  • the shielding device can abut directly on the rear surface of the substrate.
  • This embodiment is particularly suitable for a surface mount device (SMD) light receiver, which is attached by means of the so-called. Surface mounting on the front of the substrate.
  • SMD surface mount device
  • the shielding device can also extend from the back surface of the substrate, so that a not insignificant part of the shielding device has a certain spacing from the back surface of the substrate.
  • This embodiment is suitable in particular for a through-hole mount (through hole technology, THT) on the front side of the substrate mounted light receiver in which pins are inserted in the assembled state through each one located in the substrate through hole and stand out on the back of the substrate.
  • THT through hole technology
  • the shielding device has a metallic strip which penetrates the substrate from the front side to the back side and is thereby fixed in the substrate in a self-holding manner.
  • the metallic strip which can also be referred to as a metallic flap, can be, for example, a sheet which has a sufficiently high rigidity so that it is dimensionally stable, in particular on the back side of the substrate, so that it is also at least slightly shaken by the entire light receiving device not deformed and so can contribute to a consistent electromagnetic shielding effect.
  • the self-holding fixation of the shielding device can be carried out, for example, by means of one or more barbs attached to the metallic strip, which hook in the substrate material and / or in a so-called soldering lug which is fastened to the substrate.
  • the barbs can also be formed on a soldering lug of the shielding device or of the metallic strip.
  • the metallic strip has at least one bulge. This has the advantage that the rigidity of the metallic strip in the region of the at least one bulge can be increased in a simple and at the same time efficient manner.
  • At least one partial section of the shielding device is introduced into the substrate by means of an insertion process.
  • This has the advantage that the shielding device can be fixed in or on the substrate in a simple manner.
  • the shielding device or the subsection of the shielding device can be designed such that it is not necessary to form a corresponding opening in the substrate prior to insertion of the subsection of the shielding device.
  • at least the partial section which is introduced into the substrate can be so stiff and / or have a tip and / or a sharp edge on its front side.
  • the portion of the shielding device can be pressed into the substrate and penetrate the substrate in this way.
  • the mounting of the shielding device in or on the substrate can thus be considerably simplified.
  • the insertion process comprises inserting at least the subsection of the shielding device from the front side of the substrate to the rear side of the substrate.
  • the described insertion or pushing through of at least part of the shielding device which part can be for example the above-described metallic strip, has the advantage that the shielding device, like a through-hole mounted photodiode, can be mounted from the front side of the substrate.
  • the shielding device like a through-hole mounted photodiode
  • it is advantageously not necessary to turn the substrate or change the mounting direction between the mounting of the photodiode and the mounting of the rear shielding device with respect to the substrate.
  • This is remarkable insofar as at least part of the subsection of the shielding device of the light receiving device described in this application is now located on the rear side of the substrate and thus on the side opposite the actual photodiode.
  • the shielding device has a bend on the rear side of the substrate which separates a first section of the shielding device and a second section of the shielding device.
  • the first portion of the shielding device may extend substantially perpendicular to the surface of the planar substrate, whereas the second portion of the shielding device may extend substantially parallel to the substrate surface.
  • the first section preferably the fixation of the shielding in or serve on the substrate.
  • the second section may preferably serve for the shielding of electromagnetic radiation which strikes the light receiver from the rear side of the substrate.
  • the shielding device in the region of the bend on a taper.
  • This has the advantage that when mounting the shielding a well-defined bending can be realized by a simple Umbiegevorgang.
  • a special tool for generating the kinking is not required in an advantageous manner.
  • the kinking can rather be achieved by a simple manual bending over of the shielding device.
  • the shielding device comprises a front shielding device and a rear shielding device, wherein (a) the front shielding device is located at the front side of the substrate and (b) the rear shielding device is at the rear side of the substrate.
  • the front shielding device can thus protect the light receiver from electromagnetic interference that strikes the light receiver from the front of the substrate.
  • the front shielding device can also laterally surround the light receiver so that electromagnetic interference radiation incident on the light receiver on the side is at least partially shielded.
  • the front shielding device may also have a recess through which measurement light, which is to be detected by the light receiver, can pass through.
  • the light receiving device additionally has a connection contact for electrically contacting the shielding device.
  • connection contact described can, for example, be a connection pin located in the substrate.
  • the electrical contact can be made in particular by means of a solder joint.
  • the solder connection can also improve the mechanical stability of the shielding device relative to the substrate.
  • connection contact can be connected to a grounding potential. This can preferably be done by means of a relatively large conductor track, which can contribute in a known manner to a reliable ground contact.
  • the substrate has a printed circuit board.
  • the substrate has a mechanical carrier element.
  • the carrier element can be, for example, a plastic part formed by means of an injection molding process.
  • the carrier element may be such that all or at least some of the components of the described light receiving device are fixed in a positionally accurate manner. This should also be true apply when the light receiving device is subjected to certain mechanical shocks.
  • the mechanical support member and the above-mentioned circuit board may also collectively form the above-described substrate.
  • the insertion process of the shielding device can also take place through the printed circuit board and the carrier element.
  • the latching of the metallic strip described above can be formed in relation to the circuit board and / or with respect to the mechanical support element. This also applies to a fixation by means of one or more barbs.
  • the light receiver is a photodiode.
  • the photodiode may have a spectral sensitivity, which is optimized for the respective requirements.
  • the photodiode may have high sensitivity in the near infrared spectral range, where simple light emitting diodes, which are typically used as light sources, have a particularly high efficiency.
  • the photodiode may also have high detection sensitivity to electromagnetic radiation in the visible region or even in the near ultraviolet spectral region.
  • an assembling method of manufacturing a light receiving device includes (a) populating a substrate with a light receiver at a front side of the substrate, and (b) attaching a shielding device to the substrate so that the shielding device is located at least on a rear side of the substrate opposite the front side.
  • the shielding device is designed such that it shields in the attached state at least partially electromagnetic interference, which strikes the light receiver through the substrate.
  • the described assembly method is based on the finding that the electromagnetic compatibility of the light receiver can be improved by providing a suitable shielding device on the back side of the substrate.
  • the shielding device can have a metallic strip which, when the shielding device is attached, penetrates the substrate from the front side to the back side and is thereby fixed in the substrate in a self-holding manner.
  • At least one partial section of the shielding device is introduced into the substrate by means of an insertion process.
  • the shielding device or the subsection of the shielding device, which is inserted into the substrate may be formed such that it is not necessary to form a corresponding opening in the substrate prior to insertion of the subsection of the shielding device. This can be achieved, for example, in that at least the partial section which is introduced into the substrate has a sufficiently high rigidity.
  • the portion may have a peak or a sharp edge, such that the section can be pressed into the substrate and in this way penetrates the substrate.
  • the subsection is inserted from the front of the substrate to the back of the substrate into the substrate.
  • the described insertion or pushing through of at least part of the shielding device has the advantage that the shielding device, like a through-mounted photodiode, can be mounted from the front side of the substrate. As a result, it is advantageously not necessary to turn the substrate between the mounting of the photodiode and the mounting of the shielding device on the substrate rear side or to change the mounting direction.
  • the shielding device is attached to the substrate or mounted on the substrate.
  • the shielding device has a front shielding device and a rear shielding device and if the front shielding device at least partially surrounds the light receiver on the front side of the light receiving device.
  • the above-mentioned metallic strip may optionally be necked such that a first portion of the shielding device extends substantially perpendicular to the surface of the planar substrate, whereas a second portion of the shielding device extends substantially parallel to the substrate surface.
  • FIG. 1 shows the installation of a shielding device 150 in a substrate 110 of a smoke detector 100.
  • the substrate 110 has a mechanical support member 110a and a printed circuit board, wherein the circuit board in the perspective view of FIG. 1 not visible.
  • hood On the mechanical support member 110a snap hooks 112 are formed, which are provided for holding a hood, not shown, of the smoke detector 100.
  • the hood is used in a known manner to avoid contamination of the smoke detector and the removal of insects, which can trigger false alarms when it penetrates into the interior of the smoke detector 100.
  • snap hooks 114 are further formed, which in a known manner the attachment of the smoke detector 100 to an in FIG. 1 serve not shown adapter plate.
  • the adapter plate can be fastened, for example, to the wall or, in particular, to the ceiling of a room to be monitored. Thereafter, the smoke detector 100 needs to be latched by means of the snap hook 114 only in the adapter plate.
  • the smoke detector 100 based on the optical scattered-light principle has a first light-emitting device 120 and a second light-emitting device 130.
  • the light emitting devices 120, 130 each have a light source and an optic.
  • the light source of the first light emitting device 120 may emit light of a first wavelength
  • the light source of the second light emitter 130 may emit light of a second wavelength. Since the construction of the spectrally different light emitting devices 120, 130 is known and is not relevant to the invention described in this application, the technical details of the light emitting devices 120, 130 will not be discussed in this application.
  • the smoke detector 100 further comprises a light receiving device 140.
  • the light receiving device 140 has a light receiver 142 configured as a photodiode and a receiver lens 144. Since the scattered light intensity is usually not very large, in particular with a low smoke concentration, a shielding device 150 is provided for the light receiving device 140 which at least partially attenuates the intensity of electromagnetic interference radiation incident on the light receiving device 140 from outside. By the shielding device 150 thus the sensitivity of the light receiving device 140 and thus the entire smoke detector 100 is significantly improved and at the same time significantly reduces the probability of the occurrence of false alarms.
  • FIG. 1 shows the shielding device 150 shortly before mounting on the substrate 110.
  • the shielding device 150 is thus not yet in relation to the light receiving device 140 at the point where the shielding 150 can exert its shielding effect for the light receiving device 140 and in particular for the photodiode 142 ,
  • the shielding device 150 has a front shielding device 152 and a rear shielding device 154.
  • the front shielding device 152 serves to shield electromagnetic interference radiation which is in FIG. 1 From above or from the top of the light receiving device 140 hits.
  • the rear shield 154 is used to shield electromagnetic interference radiation, which in FIG. 1 from below or laterally from below through the substrate 110 to the light receiving device 140.
  • the rear shielding device has the shape of a metallic strip 154.
  • a metallic strip 154 In order to increase the rigidity of the metallic strip 154, two bulges, a first bulge 156a and a second bulge 157a are provided. Between the two bulges 156a, 157a, the metallic strip 154 has a taper, which, as will be explained in detail below, is intended to deflect the metallic strip 154b at the end of assembly of the shielding device 350.
  • the assembly of the shielding device 150 on the substrate 110 is carried out according to the example shown here in a simple manner in that the metallic strip 154 having a certain rigidity is forced through the substrate 110. In this case, pre-drilling or forming a through-hole in the substrate 110 is not required.
  • the shielding device 150 is fixed in the substrate 110 in a self-holding manner.
  • the self-retaining fixation of the shielding device 150 can be improved, for example, by means of unillustrated barbs, which get caught in the substrate material.
  • FIG. 2a shows the back of the substrate shown in Figure 1a, which is now designated by the reference numeral 210. From the substrate 210 is in the perspective view of FIG. 2a only to see the circuit board 210b. The snap hooks for the adapter plate, not shown, are provided with the reference numeral 214. Above the circuit board level, a connector strip 270 is also shown, which serves for the electrical contacting of the smoke detector.
  • pins 242a and 242b can be seen, which protrude through the substrate 210 and thus through the printed circuit board 210b.
  • a connection contact 260 is shown, which serves for the contacting and in particular the grounding of the shielding device.
  • FIG. 2a shows the shielding device in a state in which it is fixed by the substrate 210 after pushing through the rear shield 254 and the metallic strip 254, respectively. Therefore, only a part of the rear shielding device 254 can be seen on the rear side of the substrate 210. This part comprises a part of the first bulge 256a, the taper 255 and the second bulge 257a.
  • FIG. 2b shows the shielding device 250 built into the substrate 210 in a cross-sectional view.
  • the printed circuit board 210b and the mechanical support member 210a represent the components of the substrate 210 according to the embodiment shown here.
  • the front shielding device 252 of the shielding device can also be seen, which protects the actual photodiode from electromagnetic interference radiation.
  • FIGS. 3a and 3b show the built-in shielding device after bending a portion of the rear shielding device 354 of the shielding device. It is FIG. 3a a perspective view, FIG. 3b is a cross-sectional view.
  • the snap hooks for the adapter plate are provided with the reference numeral 314.
  • a plug strip 370 is also shown, which serves for the electrical contacting of the smoke detector.
  • connection contact 360 which serves for the contacting and in particular the grounding of the shielding device.
  • FIG. 3b the front shielding means 352 of the shielding device can be seen.
  • the shielding device is self-holding fixed in the substrate 310.
  • the substrate 310 has the mechanical support element 310a and the circuit board 310b.
  • the rear shielding or the metallic strip 354 has been bent in the region of the taper 355.
  • the resulting bend 355a then delimits a first portion 356 with the first bulge 356a from a second portion 357 with the second bulge 357a.
  • the first portion 356 extends substantially perpendicular to the substrate surface, whereas the second portion 357 extends substantially parallel to the substrate surface.
  • the second section of the rear shielding device 354 protects the photodiode from the effects of electromagnetic interference radiation from above through the substrate passes through the photodiode or only from above on the terminals 342a, 342b of the photodiode.
  • the second section 357 can also be connected in an electrically conductive manner to the connection contact 342b of the photodiode. In any case, this makes sense if the connection contact 342b is in any case connected to the electrical potential 0.
  • the electrically conductive connection can be done simply by a defined mechanical contact between the front end of the second portion 357 and / or by a solder joint.
  • the bulge 357a can not only serve to improve the mechanical rigidity of the rear shield device 354.
  • the upwardly formed bulge in the rear shielding device 354 also contributes to the fact that the buckling of the section 357 does not accidentally establish electrical contact between the photodiode pin 342a and the rear shielding device 354 or the entire shielding device. Namely, such a contact would lead to a short circuit between the terminal contacts 342a and 342b.
  • the shielding device described in this application has the advantage that it can provide comprehensive protection against electromagnetic interference in the smallest space. This protection refers to spurious radiation which strikes the photodiode from a front side of the substrate or from a back side of the substrate (through the substrate). Another important advantage of the shielding device described is the simple and therefore cost-effective installation on or in a substrate.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Fire-Detection Mechanisms (AREA)

Description

Die vorliegende Erfindung betrifft allgemein das technische Gebiet der Abschirmung von Lichtempfängern vor elektromagnetischer Störstrahlung. Die vorliegende Erfindung betrifft im Speziellen eine Lichtempfangseinrichtung, insbesondere für einen optischen Rauchmelder, welche Lichtempfangseinrichtung einen Lichtempfänger und eine Abschirmvorrichtung aufweist, die an einem gemeinsamen Substrat angebracht sind. Die vorliegende Erfindung betrifft ferner ein Montageverfahren zur Herstellung einer Lichtempfangseinrichtung des oben genannten Typs.The present invention generally relates to the technical field of shielding light receivers from electromagnetic interference. More specifically, the present invention relates to a light receiving device, in particular for an optical smoke detector, which light receiving device comprises a light receiver and a shielding device, which are mounted on a common substrate. The present invention further relates to a mounting method for manufacturing a light receiving device of the above type.

Um ein unerwünschtes Auftreten einer Gefahrensituation wie beispielsweise die Entstehung eines Brandes frühzeitig zu erkennen, werden häufig Gefahrmelder verwendet, die in einem gefahrenüberwachten Bereich beispielsweise innerhalb eines Gebäudes an geeigneten Stellen angebracht werden. Ein Gefahrmelder kann auch ein Teil eines Gefahrmeldesystems oder eines umfassenden Gebäudemanagementsystems sein, welches neben einer Zentrale mehrere Peripherieeinheiten aufweist. Die Peripherieeinheiten können dabei mit der Zentrale über eine direkte und/oder eine indirekte Kommunikationsverbindung verbunden sein.In order to detect an undesired occurrence of a dangerous situation such as the emergence of a fire early, often danger detectors are used, which are mounted in a hazardous area, for example, within a building at appropriate locations. A hazard detector may also be part of a hazard detection system or a comprehensive building management system which has several peripheral units in addition to a central office. The peripheral units can be connected to the center via a direct and / or an indirect communication connection.

Die Peripherieeinheiten können verschiedenen Funktionen wie beispielsweise die Detektion von Rauch oder gefährlichen Gasen, das Ausgeben von optischen oder akustischen Alarmmeldungen und/oder das Annehmen von manuellen Notrufmeldungen ausüben.The peripheral units can perform various functions, such as the detection of smoke or hazardous gases, the issuing of visual or audible alarms, and / or the acceptance of manual distress messages.

Insbesondere Rauchmelder bieten in der Praxis einen effektiven Schutz vor den Folgen eines Brandes. Aus diesem Grund werden Rauchmelder sowohl in gewerblichen als auch in privaten Räumen häufig verwendet. Dies wurde auch dadurch erreicht, weil es in der Vergangenheit gelungen ist, zuverlässige Rauchmelder auf einfache Weise und mit kostengünstigen Komponenten aufzubauen, so dass sich Rauchmelder zu einem sehr preiswerten Produkt entwickelt haben.In particular, smoke detectors offer effective protection against the consequences of a fire in practice. For this reason, smoke detectors are widely used in both commercial and private spaces. This has also been achieved because in the past it has been possible to build reliable smoke detectors in a simple way and with low cost components, so that smoke detectors have become a very inexpensive product.

Die meisten Rauchmelder basieren auf dem optischen Streulichtprinzip. Dabei wird ein von einer Lichtquelle, beispielsweise einer Leuchtdiode, ausgesandter Lichtstrahl lediglich dann teilweise auf einen Lichtempfänger, beispielsweise eine Fotodiode, gelenkt, wenn im Bereich zwischen Lichtquelle und Lichtempfänger ein Streumedium vorhanden ist. Der direkte Lichtstrahl der Lichtquelle trifft nicht auf den Lichtempfänger.Most smoke detectors are based on the diffused light principle. In this case, a light beam emitted by a light source, for example a light-emitting diode, is only partially directed to a light receiver, for example a photodiode, if a scattering medium is present in the region between the light source and the light receiver. The direct light beam of the light source does not hit the light receiver.

Da insbesondere bei einer geringen Rauchdichte die Intensität des von dem Lichtempfänger empfangenen Streulichts sehr gering ist, sollte der Lichtempfänger zum einen eine hohe Empfindlichkeit gegenüber dem zu erfassenden Streulicht und zum anderen eine geringe Empfindlichkeit gegenüber elektromagnetischer Störstrahlung aufweisen. Dies bedeutet, dass die elektromagnetische Verträglichkeit (EMV) des Lichtempfängers möglichst groß sein sollte.Since the intensity of the scattered light received by the light receiver is very low, in particular with a low smoke density, the light receiver should have a high sensitivity to the scattered light to be detected and a low sensitivity to electromagnetic interference radiation. This means that the electromagnetic compatibility (EMC) of the light receiver should be as large as possible.

Um die EMV eines in einem Rauchmelder verwendeten Lichtempfängers zu verbessern, ist es bekannt, auf der Vorderseite einer Leiterplatte, an welcher der Lichtempfänger angebracht ist, eine metallische Abschirmeinrichtung zu verwenden, welche die Intensität von elektromagnetischer Störstrahlung zumindest teilweise reduziert. Diese Maßnahme ist jedoch für manche Rauchmelder, welche einen besonders empfindlichen Lichtempfänger aufweisen, nicht ausreichend.In order to improve the EMC of a light receiver used in a smoke detector, it is known to use on the front side of a printed circuit board on which the light receiver is mounted, a metallic shielding device which at least partially reduces the intensity of electromagnetic radiation. However, this measure is not sufficient for some smoke detectors, which have a particularly sensitive light receiver.

DE 9412367 U1 beschreibt eine Vorrichtung zur Schitmung einer Diode eines optischen Rauchmelders gegen electromagnetische Einstrahlung, die aus einem in die Leiterplatte einstechbaren einstückigen Schirmblech besteht. Das Schirmblech umschlieβt die Diode umlaufend auβer von der Rückseite. DE 9412367 U1 describes a device for Schitmung a diode of an optical smoke detector against electromagnetic radiation, which consists of a einstechbaren in the circuit board one-piece shield plate. The shroud surrounds the diode all around except from the back.

Der Erfindung liegt die vorrichtungsbezogene Aufgabe zugrunde, eine Lichtempfangseinrichtung, insbesondere für einen optischen Rauchmelder, zu schaffen, welche eine besonders hohe elektromagnetische Verträglichkeit gegenüber elektromagnetischer Störstrahlung aufweist. Ein effizientes Montageverfahren zur Herstellung einer derartigen Lichtempfangseinrichtung wird auch beschriebenThe invention is the device-related object to provide a light receiving device, in particular for an optical smoke detector, which has a particularly high electromagnetic compatibility with electromagnetic interference. An efficient mounting method for manufacturing such a light receiving device will also be described

Diese Aufgabe wird gelöst durch die Gegenstände der unabhängigen Patentansprüche. Vorteilhafte Ausführungsformen der vorliegenden Erfindung sind in den abhängigen Ansprüchen beschrieben.This object is solved by the subject matters of the independent claims. Advantageous embodiments of the present invention are described in the dependent claims.

Gemäß einem ersten Aspekt der Erfindung wird eine Lichtempfangseinrichtung beschrieben, welche insbesondere für einen optischen Rauchmelder geeignet ist. Die beschriebene Lichtempfangseinrichtung weist auf (a) ein flächiges Substrat, (b) einen Lichtempfänger, welcher an einer Vorderseite des Substrats angebracht ist, und (c) eine Abschirmvorrichtung, welche sich zumindest an einer der Vorderseite gegenüber liegenden Rückseite des Substrats befindet und welche derart ausgebildet ist, dass sie zumindest teilweise elektromagnetische Störstrahlung abschirmt, welche durch das Substrat hindurch auf den Lichtempfänger trifft.According to a first aspect of the invention, a light receiving device is described, which is particularly suitable for an optical smoke detector. The described light receiving device comprises (a) a planar substrate, (b) a light receiver which is mounted on a front side of the substrate, and (c) a shielding device which is located at least on a front side opposite the front side of the substrate and which is formed so that it at least partially shields electromagnetic interference, which strikes the light receiver through the substrate.

Der beschriebenen optischen Lichtempfangseinrichtung liegt die Erkenntnis zugrunde, dass die elektromagnetische Verträglichkeit des Lichtempfängers dadurch verbessert werden kann, dass auf der Rückseite des Substrats eine geeignete Abschirmung angebracht wird. Diese Abschirmung ist derart ausgebildet, dass sie elektromagnetische Störstrahlung abschwächt, die von der Rückseite auf das Substrat trifft, das Substrat zumindest teilweise durchdringt und auf den Lichtempfänger trifft.The described optical light receiving device is based on the finding that the electromagnetic compatibility of the light receiver can be improved by providing a suitable shielding on the back side of the substrate. This shield is designed such that it attenuates electromagnetic interference radiation, which strikes the substrate from the rear side, at least partially penetrates the substrate and strikes the light receiver.

Unter dem Begriff elektromagnetische Verträglichkeit (EMV) ist in diesem Zusammenhang die Empfindlichkeit der gesamten optischen Lichtempfangseinrichtung gegenüber elektromagnetischer Störstrahlung zu verstehen. Eine solche Störstrahlung kann nämlich das Ausgangssignal des Lichtempfängers dahingehend verfälschen, dass fälschlicherweise ein Lichtempfang angenommen wird oder dass das Messsignal, welches aus einem tatsächlichen Lichtempfang resultiert, infolge eines größeren Störsignals nicht oder nicht korrekt ausgegeben werden kann.The term electromagnetic compatibility (EMC) in this context means the sensitivity of the entire optical light receiving device to electromagnetic interference radiation. Namely, such an interference radiation can falsify the output signal of the light receiver to erroneously assume a light reception or that the measurement signal resulting from an actual light reception can not be output due to a larger interference signal or not correctly.

Die sich zumindest auch an der Rückseite des Substrates befindliche Abschirmvorrichtung kann auf vielfältige Weise ausgebildet und/oder geformt sein. So kann die Abschirmvorrichtung beispielsweise unmittelbar an der rückseitigen Oberfläche des Substrates anliegen. Diese Ausführungsform eignet sich insbesondere für einen Surface Mount Device (SMD)-Lichtempfänger, welcher mittels der sog. Oberflächenmontage an der Vorderseite des Substrates angebracht ist.The shielding device located at least also on the rear side of the substrate can be formed and / or shaped in a variety of ways. For example, the shielding device can abut directly on the rear surface of the substrate. This embodiment is particularly suitable for a surface mount device (SMD) light receiver, which is attached by means of the so-called. Surface mounting on the front of the substrate.

Die Abschirmvorrichtung kann sich auch ausgehend von der rückseitigen Oberfläche des Substrates erstrecken, so dass ein nicht unwesentlicher Teil der Abschirmvorrichtung eine gewisse Beabstandung zur rückseitigen Oberfläche des Substrates aufweist. Diese Ausführungsform eignet sich insbesondere für einen in Durchsteckmontage (Through Hole Technology, THT) an der Vorderseite des Substrates angebrachten Lichtempfänger, bei dem im montierten Zustand Anschlussstifte durch jeweils ein in dem Substrat befindliches Durchgangsloch gesteckt sind und auf der Rückseite des Substrates herausstehen.The shielding device can also extend from the back surface of the substrate, so that a not insignificant part of the shielding device has a certain spacing from the back surface of the substrate. This embodiment is suitable in particular for a through-hole mount (through hole technology, THT) on the front side of the substrate mounted light receiver in which pins are inserted in the assembled state through each one located in the substrate through hole and stand out on the back of the substrate.

Gemäß einem Ausführungsbeispiel der Erfindung weist die Abschirmvorrichtung einen metallischen Streifen auf, welcher das Substrat von der Vorderseite zur Rückseite durchdringt und dabei selbsthaltend in dem Substrat fixiert ist.According to one exemplary embodiment of the invention, the shielding device has a metallic strip which penetrates the substrate from the front side to the back side and is thereby fixed in the substrate in a self-holding manner.

Der metallische Streifen, welcher auch als metallischer Lappen bezeichnet werden kann, kann dabei beispielsweise ein Blech sein, welches eine genügend hohe Steifigkeit aufweist, damit es insbesondere auf der Rückseite des Substrats so formstabil ist, dass es sich auch zumindest bei geringfügigen Erschütterungen der gesamten Lichtempfangseinrichtung nicht verformt und so zu einer gleichbleibend elektromagnetischen Abschirmwirkung beitragen kann.The metallic strip, which can also be referred to as a metallic flap, can be, for example, a sheet which has a sufficiently high rigidity so that it is dimensionally stable, in particular on the back side of the substrate, so that it is also at least slightly shaken by the entire light receiving device not deformed and so can contribute to a consistent electromagnetic shielding effect.

Die selbsthaltende Fixierung der Abschirmvorrichtung kann beispielsweise mittels einem oder mittels mehrerer an dem metallischen Streifen angebrachten Widerhaken erfolgen, die sich in dem Substratmaterial und/oder in einer sog. Lötfahne, welche an dem Substrat befestigt ist, verhaken. Ebenfalls können die Widerhaken auch an einer Lötfahne der Abschirmvorrichtung bzw. des metallischen Streifens ausgebildet sein.The self-holding fixation of the shielding device can be carried out, for example, by means of one or more barbs attached to the metallic strip, which hook in the substrate material and / or in a so-called soldering lug which is fastened to the substrate. Likewise, the barbs can also be formed on a soldering lug of the shielding device or of the metallic strip.

Gemäß einem weiteren Ausführungsbeispiel der Erfindung weist der metallische Streifen zumindest eine Ausbeulung auf. Dies hat den Vorteil, dass die Steifigkeit des metallischen Streifens im Bereich der zumindest einen Ausbeulung auf einfache und zugleich effiziente Weise erhöht werden kann.According to a further embodiment of the invention, the metallic strip has at least one bulge. This has the advantage that the rigidity of the metallic strip in the region of the at least one bulge can be increased in a simple and at the same time efficient manner.

Gemäß einem Beispiel ist zumindest ein Teilabschnitt der Abschirmvorrichtung mittels eines Einschiebevorgangs in das Substrat eingebracht. Dies hat den Vorteil, dass die Abschirmvorrichtung auf einfache Weise in bzw. an dem Substrat fixiert werden kann. Dabei kann die Abschirmvorrichtung bzw. der Teilabschnitt der Abschirmvorrichtung derart ausgebildet sein, dass es nicht erforderlich ist, vor dem Einschieben des Teilabschnitts der Abschirmvorrichtung eine entsprechende Öffnung in dem Substrat auszuformen. Insbesondere kann zumindest der Teilabschnitt, welcher in das Substrat eingebracht wird, derart steif sein und/oder an seiner Vorderseite eine Spitze und/oder eine scharfe Kante aufweisen. Damit kann der Teilabschnitt der Abschirmvorrichtung in das Substrat hineingedrückt werden und auf diese Weise das Substrat durchdringen. Die Montage der Abschirmvorrichtung in bzw. an dem Substrat kann damit erheblich vereinfacht werden.According to one example, at least one partial section of the shielding device is introduced into the substrate by means of an insertion process. This has the advantage that the shielding device can be fixed in or on the substrate in a simple manner. In this case, the shielding device or the subsection of the shielding device can be designed such that it is not necessary to form a corresponding opening in the substrate prior to insertion of the subsection of the shielding device. In particular, at least the partial section which is introduced into the substrate can be so stiff and / or have a tip and / or a sharp edge on its front side. Thus, the portion of the shielding device can be pressed into the substrate and penetrate the substrate in this way. The mounting of the shielding device in or on the substrate can thus be considerably simplified.

Gemäß einem weiteren Beispiel weist der Einschiebevorgang ein Einschieben zumindest des Teilabschnitts der Abschirmvorrichtung von der Vorderseite des Substrats zu der Rückseite des Substrats auf.According to another example, the insertion process comprises inserting at least the subsection of the shielding device from the front side of the substrate to the rear side of the substrate.

Das beschriebene Einschieben bzw. Durchschieben zumindest eines Teils der Abschirmvorrichtung, welcher Teil beispielsweise der oben beschriebene metallische Streifen sein kann, hat den Vorteil, dass die Abschirmvorrichtung ebenso wie eine in Durchsteckmontage montierte Fotodiode von der Vorderseite des Substrats her angebracht werden kann. Dadurch ist es auf vorteilhafte Weise nicht erforderlich, zwischen der Montage der Fotodiode und der Montage der in Bezug auf das Substrat rückseitigen Abschirmvorrichtung das Substrat zu wenden oder die Montagerichtung zu ändern. Dies ist insofern bemerkenswert, als sich zumindest ein Teil des Teilabschnitts der Abschirmvorrichtung der in dieser Anmeldung beschriebenen Lichtempfangseinrichtung nun auf der Rückseite des Substrates und damit auf der der eigentlichen Fotodiode gegenüberliegenden Seite befindet.The described insertion or pushing through of at least part of the shielding device, which part can be for example the above-described metallic strip, has the advantage that the shielding device, like a through-hole mounted photodiode, can be mounted from the front side of the substrate. As a result, it is advantageously not necessary to turn the substrate or change the mounting direction between the mounting of the photodiode and the mounting of the rear shielding device with respect to the substrate. This is remarkable insofar as at least part of the subsection of the shielding device of the light receiving device described in this application is now located on the rear side of the substrate and thus on the side opposite the actual photodiode.

Gemäß einem weiteren Ausführungsbeispiel der Erfindung weist die Abschirmvorrichtung auf der Rückseite des Substrats eine Abknickung auf, die einen ersten Abschnitt der Abschirmvorrichtung und einen zweiten Abschnitt der Abschirmvorrichtung voneinander trennt.According to a further exemplary embodiment of the invention, the shielding device has a bend on the rear side of the substrate which separates a first section of the shielding device and a second section of the shielding device.

Insbesondere kann sich der erste Abschnitt der Abschirmvorrichtung im Wesentlichen senkrecht zu der Oberfläche des flächigen Substrats erstrecken, wohingegen sich der zweite Abschnitt der Abschirmvorrichtung im Wesentlichen parallel zu der Substratoberfläche erstrecken kann. Dabei kann der erste Abschnitt bevorzugt der Fixierung der Abschirmvorrichtung in bzw. an dem Substrat dienen. Der zweite Abschnitt kann bevorzugt der Abschirmung von elektromagnetischer Strahlung dienen, welche von der Rückseite des Substrats auf den Lichtempfänger trifft.In particular, the first portion of the shielding device may extend substantially perpendicular to the surface of the planar substrate, whereas the second portion of the shielding device may extend substantially parallel to the substrate surface. In this case, the first section preferably the fixation of the shielding in or serve on the substrate. The second section may preferably serve for the shielding of electromagnetic radiation which strikes the light receiver from the rear side of the substrate.

Gemäß einem weiteren Ausführungsbeispiel der Erfindung weist die Abschirmvorrichtung im Bereich der Abknickung eine Verjüngung auf. Dies hat den Vorteil, dass bei der Montage der Abschirmvorrichtung eine genau definierte Abknickung durch einen einfachen Umbiegevorgang realisiert werden kann. Ein spezielles Werkzeug zum Erzeugen der Abknickung ist auf vorteilhafte Weise nicht erforderlich. Die Abknickung kann vielmehr durch ein einfaches manuelles Umbiegen der Abschirmvorrichtung erreicht werden.According to a further embodiment of the invention, the shielding device in the region of the bend on a taper. This has the advantage that when mounting the shielding a well-defined bending can be realized by a simple Umbiegevorgang. A special tool for generating the kinking is not required in an advantageous manner. The kinking can rather be achieved by a simple manual bending over of the shielding device.

Gemäß einem weiteren Ausführungsbeispiel der Erfindung weist die Abschirmvorrichtung eine vordere Abschirmeinrichtung und eine hintere Abschirmeinrichtung auf, wobei (a) sich die vordere Abschirmeinrichtung an der Vorderseite des Substrates befindet und (b) sich die hintere Abschirmeinrichtung an der Rückseite des Substrates befindet.According to a further embodiment of the invention, the shielding device comprises a front shielding device and a rear shielding device, wherein (a) the front shielding device is located at the front side of the substrate and (b) the rear shielding device is at the rear side of the substrate.

Die vordere Abschirmeinrichtung kann somit den Lichtempfänger vor elektromagnetischer Störstrahlung schützen, die von der Vorderseite des Substrates auf den Lichtempfänger trifft. Die vordere Abschirmeinrichtung kann den Lichtempfänger auch seitlich umgeben, so dass auch seitlich auf den Lichtempfänger einfallende elektromagnetische Störstrahlung zumindest teilweise abgeschirmt wird.The front shielding device can thus protect the light receiver from electromagnetic interference that strikes the light receiver from the front of the substrate. The front shielding device can also laterally surround the light receiver so that electromagnetic interference radiation incident on the light receiver on the side is at least partially shielded.

Mit der beschriebenen Kombination aus der vorderen und der hinteren Abschirmeinrichtung kann somit eine umfassende Abschirmung für den Lichtempfänger erreicht werden, welche den Lichtempfänger nahezu allseitig umgibt und somit einen optimalen Schutz gegenüber elektromagnetischer Störstrahlung bietet. Selbstverständlich kann die vordere Abschirmeinrichtung auch eine Aussparung aufweisen, durch welche Messlicht, welches von dem Lichtempfänger detektiert werden soll, hindurchtreten kann.With the described combination of the front and the rear shielding device, a comprehensive shielding for the light receiver can thus be achieved, which surrounds the light receiver almost on all sides and thus provides optimum protection against electromagnetic interference. Of course, the front shielding device may also have a recess through which measurement light, which is to be detected by the light receiver, can pass through.

Gemäß einem weiteren Ausführungsbeispiel der Erfindung weist die Lichtempfangseinrichtung zusätzlich einen Anschlusskontakt zum elektrischen Kontaktieren der Abschirmvorrichtung auf.According to a further exemplary embodiment of the invention, the light receiving device additionally has a connection contact for electrically contacting the shielding device.

Der beschriebene Anschlusskontakt kann beispielsweise ein in dem Substrat befindlicher Anschlussstift sein. Die elektrische Kontaktierung kann insbesondere mittels einer Lötverbindung hergestellt werden. Durch die Lötverbindung kann auch die mechanische Stabilität der Abschirmvorrichtung in Bezug zu dem Substrat verbessert werden.The connection contact described can, for example, be a connection pin located in the substrate. The electrical contact can be made in particular by means of a solder joint. The solder connection can also improve the mechanical stability of the shielding device relative to the substrate.

Um einen möglichst guten Abschirmeffekt zu erreichen, kann der Anschlusskontakt mit einem Erdungspotential verbunden werden. Dies kann bevorzugt mittels einer relativ großflächigen Leiterbahn erfolgen, welche in bekannter Weise zu einem zuverlässigen Erdungskontakt beitragen kann.In order to achieve the best possible shielding effect, the connection contact can be connected to a grounding potential. This can preferably be done by means of a relatively large conductor track, which can contribute in a known manner to a reliable ground contact.

Gemäß einem weiteren Ausführungsbeispiel der Erfindung weist das Substrat eine Leiterplatte auf. Dies hat den Vorteil, dass die beschriebene Lichtempfangseinrichtung auf einem einfachen Substrat ausgebildet werden kann, welches zudem noch in bekannter Weise geeignete Anschlussmöglichkeiten und Leiterbahnen zur Kontaktierung der elektronischen Komponenten der Lichtempfangseinrichtung bereitstellen kann.According to a further exemplary embodiment of the invention, the substrate has a printed circuit board. This has the advantage that the described light receiving device can be formed on a simple substrate, which can also provide in a known manner suitable connection options and interconnects for contacting the electronic components of the light receiving device.

Gemäß einem weiteren Ausführungsbeispiel der Erfindung weist das Substrat ein mechanisches Trägerelement auf. Das Trägerelement kann beispielsweise ein mittels eines Spritzgussprozesses ausgebildetes Kunststoffteil sein.According to a further exemplary embodiment of the invention, the substrate has a mechanical carrier element. The carrier element can be, for example, a plastic part formed by means of an injection molding process.

Das Trägerelement kann dazu betragen, dass alle oder zumindest einige der Komponenten der beschriebenen Lichtempfangseinrichtung positionsgenau fixiert sind. Dies soll auch dann gelten, wenn die Lichtempfangseinrichtung gewissen mechanischen Erschütterungen unterworfen ist.The carrier element may be such that all or at least some of the components of the described light receiving device are fixed in a positionally accurate manner. This should also be true apply when the light receiving device is subjected to certain mechanical shocks.

Es wird darauf hingewiesen, dass das mechanische Trägerelement und die oben genannte Leiterplatte auch gemeinsam das oben beschriebene Substrat bilden können. Insbesondere kann der Einschiebevorgang der Abschirmvorrichtung auch durch die Leiterplatte und das Trägerelement hindurch erfolgen. Die oben beschriebene Selbsthaltung des metallischen Streifens kann sich dabei in Bezug zu der Leiterplatte und/oder in Bezug zu dem mechanischen Trägerelement ausbilden. Dies gilt auch für eine Fixierung mittels einem oder mittels mehrerer Widerhaken.It should be noted that the mechanical support member and the above-mentioned circuit board may also collectively form the above-described substrate. In particular, the insertion process of the shielding device can also take place through the printed circuit board and the carrier element. The latching of the metallic strip described above can be formed in relation to the circuit board and / or with respect to the mechanical support element. This also applies to a fixation by means of one or more barbs.

Gemäß einem weiteren Ausführungsbeispiel der Erfindung ist der Lichtempfänger eine Fotodiode. Dies hat den Vorteil, dass der Lichtempfänger mittels eines einfachen und insbesondere mittels eines preiswerten optoelektronischen Bauelements realisiert werden kann. Die beschriebene Lichtempfangseinrichtung stellt daher eine optische Einrichtung mit einer hohen elektromagnetischen Verträglichkeit dar, welche auch für sog. Low Cost Anwendungen geeignet ist.According to a further embodiment of the invention, the light receiver is a photodiode. This has the advantage that the light receiver can be realized by means of a simple and in particular by means of a low-cost optoelectronic component. The light receiving device described therefore represents an optical device with a high electromagnetic compatibility, which is also suitable for so-called. Low cost applications.

Die Fotodiode kann eine spektrale Empfindlichkeit aufweisen, welche für die jeweils vorliegenden Anforderungen optimiert ist. Insbesondere zur Verwendung in einem optischen Rauchmelder kann die Fotodiode eine hohe Empfindlichkeit im nahen infraroten Spektralbereich aufweisen, wo einfache Leuchtdioden, die typischerweise als Lichtquellen verwendet werden, eine besondere hohe Effizient aufweisen.The photodiode may have a spectral sensitivity, which is optimized for the respective requirements. In particular, for use in an optical smoke detector, the photodiode may have high sensitivity in the near infrared spectral range, where simple light emitting diodes, which are typically used as light sources, have a particularly high efficiency.

Es wird jedoch darauf hingewiesen, dass die Fotodiode auch im sichtbaren Bereich oder sogar im nahe Ultravioletten Spektralbereich eine hohe Nachweisempfindlichkeit für elektromagnetische Strahlung aufweisen kann.It should be noted, however, that the photodiode may also have high detection sensitivity to electromagnetic radiation in the visible region or even in the near ultraviolet spectral region.

Gemäß einem weiteren Beispiel wird ein Montageverfahren zur Herstellung einer Lichtempfangseinrichtung angegeben. Das angegebene Montageverfahren weist auf (a) ein Bestücken eines Substrats mit einem Lichtempfänger an einer Vorderseite des Substrats, und (b) ein Anbringen einer Abschirmvorrichtung an dem Substrat, so dass sich die Abschirmvorrichtung zumindest an einer der Vorderseite gegenüber liegenden Rückseite des Substrats befindet. Dabei ist die Abschirmvorrichtung derart ausgebildet, dass sie im angebrachten Zustand zumindest teilweise elektromagnetische Störstrahlung abschirmt, welche durch das Substrat hindurch auf den Lichtempfänger trifft.As another example, an assembling method of manufacturing a light receiving device is disclosed. The specified mounting method includes (a) populating a substrate with a light receiver at a front side of the substrate, and (b) attaching a shielding device to the substrate so that the shielding device is located at least on a rear side of the substrate opposite the front side. In this case, the shielding device is designed such that it shields in the attached state at least partially electromagnetic interference, which strikes the light receiver through the substrate.

Dem beschriebenen Montageverfahren liegt die Erkenntnis zugrunde, dass die elektromagnetische Verträglichkeit des Lichtempfängers dadurch verbessert werden kann, dass auf der Rückseite des Substrats eine geeignete Abschirmvorrichtung angebracht wird.The described assembly method is based on the finding that the electromagnetic compatibility of the light receiver can be improved by providing a suitable shielding device on the back side of the substrate.

Die Abschirmvorrichtung kann dabei einen metallischen Streifen aufweisen, welcher beim Anbringen der Abschirmvorrichtung das Substrat von der Vorderseite her zur Rückseite durchdringt und dabei selbsthaltend in dem Substrat fixiert ist.The shielding device can have a metallic strip which, when the shielding device is attached, penetrates the substrate from the front side to the back side and is thereby fixed in the substrate in a self-holding manner.

Gemäß einem Ausführungsbeispiel der Erfindung wird zumindest ein Teilabschnitt der Abschirmvorrichtung mittels eines Einschiebevorgangs in das Substrat eingebracht.According to one exemplary embodiment of the invention, at least one partial section of the shielding device is introduced into the substrate by means of an insertion process.

Die Abschirmvorrichtung bzw. der Teilabschnitt der Abschirmvorrichtung, welcher in das Substrat eingeschoben wird, kann derart ausgebildet sein, dass es nicht erforderlich ist, vor dem Einschieben des Teilabschnitts der Abschirmvorrichtung eine entsprechende Öffnung in dem Substrat auszuformen. Dies kann beispielsweise dadurch erreicht werden, dass zumindest der Teilabschnitt, welcher in das Substrat eingebracht wird, eine ausreichend große Steifigkeit aufweist. Außerdem kann der Teilabschnitt eine Spitze oder eine scharfe Kante aufweisen, so dass der Teilabschnitt in das Substrat hineingedrückt werden kann und auf diese Weise das Substrat durchdringt.The shielding device or the subsection of the shielding device, which is inserted into the substrate, may be formed such that it is not necessary to form a corresponding opening in the substrate prior to insertion of the subsection of the shielding device. This can be achieved, for example, in that at least the partial section which is introduced into the substrate has a sufficiently high rigidity. In addition, the portion may have a peak or a sharp edge, such that the section can be pressed into the substrate and in this way penetrates the substrate.

Gemäß einem weiteren Beispiel wird der Teilabschnitt von der Vorderseite des Substrats zu der Rückseite des Substrats in das Substrat eingeschoben.According to another example, the subsection is inserted from the front of the substrate to the back of the substrate into the substrate.

Das beschriebene Einschieben bzw. Durchschieben zumindest eines Teils der Abschirmvorrichtung hat den Vorteil, dass die Abschirmvorrichtung ebenso wie eine in Durchsteckmontage montierte Fotodiode von der Vorderseite des Substrats her angebracht werden kann. Dadurch ist es auf vorteilhafte Weise nicht erforderlich, zwischen der Montage der Fotodiode und der Montage der Abschirmvorrichtung auf der Substratrückseite das Substrat zu wenden oder die Montagerichtung zu ändern.The described insertion or pushing through of at least part of the shielding device has the advantage that the shielding device, like a through-mounted photodiode, can be mounted from the front side of the substrate. As a result, it is advantageously not necessary to turn the substrate between the mounting of the photodiode and the mounting of the shielding device on the substrate rear side or to change the mounting direction.

Bevorzugt wird zuerst der Lichtempfänger und erst dann die Abschirmvorrichtung an dem Substrat angebracht bzw. auf dem Substrat bestückt. Dies ist insbesondere dann vorteilhaft, wenn die Abschirmvorrichtung eine vordere Abschirmeinrichtung und eine hintere Abschirmeinrichtung aufweist und wenn die vordere Abschirmeinrichtung den Lichtempfänger an der Vorderseite der Lichtempfangseinrichtung zumindest teilweise umgibt.Preferably, first the light receiver and only then the shielding device is attached to the substrate or mounted on the substrate. This is particularly advantageous if the shielding device has a front shielding device and a rear shielding device and if the front shielding device at least partially surrounds the light receiver on the front side of the light receiving device.

Nach dem Anbringen der Abschirmvorrichtung kann der oben genannte metallische Streifen optional derart genickt werden, dass sich ein erster Abschnitt der Abschirmvorrichtung im Wesentlichen senkrecht zu der Oberfläche des flächigen Substrats erstreckt, wohingegen sich ein zweiter Abschnitt der Abschirmvorrichtung im Wesentlichen parallel zu der Substratoberfläche erstreckt.After attaching the shielding device, the above-mentioned metallic strip may optionally be necked such that a first portion of the shielding device extends substantially perpendicular to the surface of the planar substrate, whereas a second portion of the shielding device extends substantially parallel to the substrate surface.

Es wird darauf hingewiesen, dass Ausführungsformen der Erfindung mit Bezug auf unterschiedliche Erfindungsgegenstände beschrieben wurden.It should be noted that embodiments of the invention have been described with reference to different subject matters.

Dem Fachmann wird jedoch bei der Lektüre dieser Anmeldung sofort klar werden, dass, sofern nicht explizit anders angegeben, zusätzlich zu einer Kombination von Merkmalen, die zu einem Typ von Erfindungsgegenstand gehören, auch eine beliebige Kombination von Merkmalen möglich ist, die zu unterschiedlichen Typen von Erfindungsgegenständen gehören.However, it will be readily apparent to those skilled in the art upon reading this application that, unless explicitly stated otherwise, in addition to a combination of features belonging to a type of subject matter, any combination of features that may result in different types of features is also possible Subject matters belong.

Weitere Vorteile und Merkmale der vorliegenden Erfindung ergeben sich aus der folgenden beispielhaften Beschreibung derzeit bevorzugter Ausführungsformen. Die einzelnen Figuren der Zeichnung dieser Anmeldung sind lediglich als schematisch und als nicht maßstabsgetreu anzusehen.

  • Figur 1 zeigt in einer perspektivischen Darstellung den Einbau einer Abschirmvorrichtung in ein Substrat eines Rauchmelders, auf welchem Substrat sich alle optoelektronischen Komponenten des Rauchmelders befinden.
  • Figur 2a zeigt in einer perspektivischen Darstellung die Rückseite des in Figur 1a dargestellten Substrats mit der eingebauten Abschirmvorrichtung.
  • Figur 2b zeigt in einer Querschnittsdarstellung die eingebaute Abschirmvorrichtung.
  • Figur 3a zeigt in einer perspektivischen Darstellung die eingebaute Abschirmvorrichtung nach einem Umbiegen eines Abschnitts einer hinteren Abschirmeinrichtung der Abschirmvorrichtung.
  • Figur 3b zeigt in einer Querschnittsdarstellung die eingebaute Abschirmvorrichtung mit dem umgebogenen Abschnitt der hinteren Abschirmeinrichtung.
Further advantages and features of the present invention will become apparent from the following exemplary description of presently preferred embodiments. The individual figures of the drawing of this application are merely to be regarded as schematic and not to scale.
  • FIG. 1 shows in a perspective view the installation of a shielding device in a substrate of a smoke detector, on which substrate are all optoelectronic components of the smoke detector.
  • FIG. 2a shows in a perspective view of the back of the substrate shown in Figure 1a with the built-in shielding device.
  • FIG. 2b shows in a cross-sectional view of the built-in shielding device.
  • FIG. 3a shows in a perspective view of the built-in shielding device after bending over a portion of a rear shielding device of the shielding device.
  • FIG. 3b shows in a cross-sectional view of the built-in shielding device with the bent portion of the rear shield.

An dieser Stelle wird darauf hingewiesen, dass sich in der Zeichnung die Bezugszeichen von gleichen oder von einander entsprechenden Komponenten lediglich in ihrer ersten Ziffer voneinander unterscheiden.It should be noted that in the drawing, the reference numerals of the same or corresponding components differ only in their first digit from each other.

Ferner wird darauf hingewiesen, dass die nachfolgend beschriebenen Ausführungsformen lediglich eine beschränkte Auswahl an möglichen Ausführungsvarianten der Erfindung darstellen. Insbesondere ist es möglich, die Merkmale einzelner Ausführungsformen in geeigneter Weise miteinander zu kombinieren, so dass für den Fachmann mit den hier explizit dargestellten Ausführungsvarianten eine Vielzahl von verschiedenen Ausführungsformen als offensichtlich offenbart anzusehen sind.It should also be noted that the embodiments described below represent only a limited selection of possible embodiments of the invention. In particular, it is possible to suitably combine the features of individual embodiments with one another, so that a multiplicity of different embodiments are to be regarded as obviously disclosed to the person skilled in the art with the embodiment variants explicitly illustrated here.

Figur 1 zeigt den Einbau einer Abschirmvorrichtung 150 in ein Substrat 110 eines Rauchmelders 100. Das Substrat 110 weist ein mechanisches Trägerelement 110a und eine Leiterplatte auf, wobei die Leiterplatte in der perspektivischen Darstellung von Figur 1 nicht zu sehen ist. FIG. 1 shows the installation of a shielding device 150 in a substrate 110 of a smoke detector 100. The substrate 110 has a mechanical support member 110a and a printed circuit board, wherein the circuit board in the perspective view of FIG. 1 not visible.

An dem mechanischen Trägerelement 110a sind Schnapphaken 112 ausgebildet, welche zur Halterung einer nicht dargestellten Haube des Rauchmelders 100 vorgesehen sind. Die Haube dient in bekannter Weise der Vermeidung einer Verschmutzung des Rauchmelders und dem Fernhalten von Insekten, welche bei einem Eindringen in das Innere des Rauchmelders 100 Falschalarme auslösen können.On the mechanical support member 110a snap hooks 112 are formed, which are provided for holding a hood, not shown, of the smoke detector 100. The hood is used in a known manner to avoid contamination of the smoke detector and the removal of insects, which can trigger false alarms when it penetrates into the interior of the smoke detector 100.

An dem mechanischen Trägerelement 110a sind ferner Schnapphaken 114 ausgebildet, welche in bekannter Weise der Befestigung des Rauchmelders 100 an einer in Figur 1 nicht dargestellten Adapterplatte dienen. Die Adapterplatte kann beispielsweise an der Wand oder insbesondere an der Decke eines zu überwachenden Raumes befestigt werden. Danach braucht der Rauchmelder 100 mittels der Schnapphaken 114 nur noch in die Adapterplatte eingeklinkt werden.On the mechanical support member 110a snap hooks 114 are further formed, which in a known manner the attachment of the smoke detector 100 to an in FIG. 1 serve not shown adapter plate. The adapter plate can be fastened, for example, to the wall or, in particular, to the ceiling of a room to be monitored. Thereafter, the smoke detector 100 needs to be latched by means of the snap hook 114 only in the adapter plate.

Der auf dem optischen Streulichtprinzip beruhende Rauchmelder 100 weist eine erste Lichtsendeeinrichtung 120 und eine zweite Lichtsendeeinrichtung 130 auf. Die Lichtsendeeinrichtungen 120, 130 weisen jeweils eine Lichtquelle und eine Optik auf. Die Lichtquelle der ersten Lichtsendeeinrichtung 120 kann Licht mit einer ersten Wellenlänge und die Lichtquelle der zweiten Lichtsendeeinrichtung 130 kann Licht mit einer zweiten Wellenlänge emittieren. Da der Aufbau der spektral unterschiedlichen Lichtsendeeinrichtungen 120, 130 bekannt ist und für die in dieser Anmeldung beschriebenen Erfindung nicht weiter relevant ist, wird in dieser Anmeldung nicht weiter auf die technischen Einzelheiten der Lichtsendeeinrichtungen 120, 130 eingegangen.The smoke detector 100 based on the optical scattered-light principle has a first light-emitting device 120 and a second light-emitting device 130. The light emitting devices 120, 130 each have a light source and an optic. The light source of the first light emitting device 120 may emit light of a first wavelength, and the light source of the second light emitter 130 may emit light of a second wavelength. Since the construction of the spectrally different light emitting devices 120, 130 is known and is not relevant to the invention described in this application, the technical details of the light emitting devices 120, 130 will not be discussed in this application.

Wie aus Figur 1 ersichtlich, weist der Rauchmelder 100 ferner eine Lichtempfangseinrichtung 140 auf. Die Lichtempfangseinrichtung 140 weist einen als Fotodiode ausgebildeten Lichtempfänger 142 und eine Empfängerlinse 144 auf. Da die Streulichtintensität insbesondere bei einer geringen Rauchkonzentration üblicherweise nicht sehr groß ist, ist für die Lichtempfangseinrichtung 140 eine Abschirmvorrichtung 150 vorgesehen, welche die Intensität von elektromagnetischer Störstrahlung, die von außen auf die Lichtempfangseinrichtung 140 einfällt, zumindest teilweise abschwächt. Durch die Abschirmvorrichtung 150 wird somit die Empfindlichkeit der Lichtempfangseinrichtung 140 und damit des gesamten Rauchmelders 100 erheblich verbessert und gleichzeitig die Wahrscheinlichkeit für das Auftreten von Fehlalarmen erheblich reduziert.How out FIG. 1 can be seen, the smoke detector 100 further comprises a light receiving device 140. The light receiving device 140 has a light receiver 142 configured as a photodiode and a receiver lens 144. Since the scattered light intensity is usually not very large, in particular with a low smoke concentration, a shielding device 150 is provided for the light receiving device 140 which at least partially attenuates the intensity of electromagnetic interference radiation incident on the light receiving device 140 from outside. By the shielding device 150 thus the sensitivity of the light receiving device 140 and thus the entire smoke detector 100 is significantly improved and at the same time significantly reduces the probability of the occurrence of false alarms.

Figur 1 zeigt die Abschirmvorrichtung 150 kurz vor der Montage an dem Substrat 110. Die Abschirmvorrichtung 150 befindet sich also in Bezug zu der Lichtempfangseinrichtung 140 noch nicht an der Stelle, an der die Abschirmvorrichtung 150 ihre Abschirmwirkung für die Lichtempfangseinrichtung 140 und insbesondere für die Fotodiode 142 entfalten kann. FIG. 1 shows the shielding device 150 shortly before mounting on the substrate 110. The shielding device 150 is thus not yet in relation to the light receiving device 140 at the point where the shielding 150 can exert its shielding effect for the light receiving device 140 and in particular for the photodiode 142 ,

Gemäß dem hier dargestellten Ausführungsbeispiel weist die Abschirmvorrichtung 150 eine vordere Abschirmeinrichtung 152 und eine hintere Abschirmeinrichtung 154 auf. Im eingebauten Zustand, welcher nachfolgend noch genauer beschrieben wird, dient die vordere Abschirmeinrichtung 152 der Abschirmung von elektromagnetischer Störstrahlung, welche in Figur 1 von oben oder seitlich von oben auf die Lichtempfangseinrichtung 140 trifft. Die hintere Abschirmeinrichtung 154 dient der Abschirmung von elektromagnetischer Störstrahlung, welche in Figur 1 von unten oder seitlich von unten durch das Substrat 110 hindurch auf die Lichtempfangseinrichtung 140 trifft.According to the embodiment illustrated here, the shielding device 150 has a front shielding device 152 and a rear shielding device 154. In the installed state, which will be described in more detail below, the front shielding device 152 serves to shield electromagnetic interference radiation which is in FIG. 1 From above or from the top of the light receiving device 140 hits. The rear shield 154 is used to shield electromagnetic interference radiation, which in FIG. 1 from below or laterally from below through the substrate 110 to the light receiving device 140.

Gemäß dem hier dargestellten Ausführungsbeispiel weist die hintere Abschirmeinrichtung die Form eines metallischen Streifens 154 auf. Um die Steifigkeit des metallischen Streifens 154 zu erhöhen, sind zwei Ausbeulungen, eine erste Ausbeulung 156a und eine zweite Ausbeulung 157a vorgesehen. Zwischen den beiden Ausbeulungen 156a, 157a weist der metallische Streifen 154 eine Verjüngung auf, welche, wie nachfolgend noch genau erläutert wird, am Ende der Montage der Abschirmvorrichtung 350 ein Abknicken des metallischen Streifens 154b erleitern soll.According to the exemplary embodiment illustrated here, the rear shielding device has the shape of a metallic strip 154. In order to increase the rigidity of the metallic strip 154, two bulges, a first bulge 156a and a second bulge 157a are provided. Between the two bulges 156a, 157a, the metallic strip 154 has a taper, which, as will be explained in detail below, is intended to deflect the metallic strip 154b at the end of assembly of the shielding device 350.

Die Montage der Abschirmvorrichtung 150 an dem Substrat 110 erfolgt gemäß dem hier dargestellten Beispiel auf einfache Weise dadurch, dass der eine gewisse Steifigkeit aufweisende metallische Streifen 154 durch das Substrat 110 hindurch gedrückt wird. Dabei ist ein Vorbohren oder ein Ausbilden eines Durchgangslochs in dem Substrat 110 nicht erforderlich. Am Ende des Einschiebevorgangs ist die Abschirmvorrichtung 150 selbsthaltend in dem Substrat 110 fixiert. Die selbsthaltende Fixierung der Abschirmvorrichtung 150 kann beispielsweise mittels nicht dargestellter Widerhaken verbessert werden, welche sich in dem Substratmaterial verhaken.The assembly of the shielding device 150 on the substrate 110 is carried out according to the example shown here in a simple manner in that the metallic strip 154 having a certain rigidity is forced through the substrate 110. In this case, pre-drilling or forming a through-hole in the substrate 110 is not required. At the end of the insertion process, the shielding device 150 is fixed in the substrate 110 in a self-holding manner. The self-retaining fixation of the shielding device 150 can be improved, for example, by means of unillustrated barbs, which get caught in the substrate material.

Figur 2a zeigt die Rückseite des in Figur 1a dargestellten Substrats, welches nunmehr mit dem Bezugszeichen 210 versehen ist. Von dem Substrat 210 ist in der perspektivischen Darstellung von Figur 2a lediglich die Leiterplatte 210b zu sehen. Die Schnapphaken für die nicht dargestellte Adapterplatte sind mit dem Bezugszeichen 214 versehen. Oberhalb der Leiterplattenebene ist ferner eine Steckerleiste 270 dargestellt, welche der elektrischen Kontaktierung des Rauchmelders dient. FIG. 2a shows the back of the substrate shown in Figure 1a, which is now designated by the reference numeral 210. From the substrate 210 is in the perspective view of FIG. 2a only to see the circuit board 210b. The snap hooks for the adapter plate, not shown, are provided with the reference numeral 214. Above the circuit board level, a connector strip 270 is also shown, which serves for the electrical contacting of the smoke detector.

Von der Fotodiode sind in Figur 2a lediglich Anschlussstifte 242a und 242b zu erkennen, welche durch das Substrat 210 und damit durch die Leiterplatte 210b hindurch ragen. Ferner ist ein Anschlusskontakt 260 dargestellt, welcher der Kontaktierung und insbesondere der Erdung der Abschirmvorrichtung dient.From the photodiode are in FIG. 2a only pins 242a and 242b can be seen, which protrude through the substrate 210 and thus through the printed circuit board 210b. Further, a connection contact 260 is shown, which serves for the contacting and in particular the grounding of the shielding device.

Figur 2a zeigt die Abschirmvorrichtung in einem Zustand, in dem sie nach dem Durchschieben der hinteren Abschirmeinrichtung 254 bzw. des metallischen Streifens 254 durch das Substrat 210 fixiert ist. An der Rückseite des Substrats 210 ist deshalb lediglich ein Teil der hinteren Abschirmeinrichtung 254 zu erkennen. Dieser Teil umfasst einen Teil der erste Ausbeulung 256a, die Verjüngung 255 und die zweite Ausbeulung 257a. FIG. 2a shows the shielding device in a state in which it is fixed by the substrate 210 after pushing through the rear shield 254 and the metallic strip 254, respectively. Therefore, only a part of the rear shielding device 254 can be seen on the rear side of the substrate 210. This part comprises a part of the first bulge 256a, the taper 255 and the second bulge 257a.

Figur 2b zeigt die in das Substrat 210 eingebaute Abschirmvorrichtung 250 in einer Querschnittsdarstellung. Zu erkennen sind die Leiterplatte 210b und das mechanische Trägerelement 210a, welche gemäß dem hier dargestellten Ausführungsbeispiel die Komponenten des Substrats 210 darstellen. Ferner ist auch die vordere Abschirmeinrichtung 252 der Abschirmvorrichtung zu erkennen, welche die eigentliche Fotodiode vor elektromagnetischer Störstrahlung schützt. FIG. 2b shows the shielding device 250 built into the substrate 210 in a cross-sectional view. Evident are the printed circuit board 210b and the mechanical support member 210a, which represent the components of the substrate 210 according to the embodiment shown here. Furthermore, the front shielding device 252 of the shielding device can also be seen, which protects the actual photodiode from electromagnetic interference radiation.

Die Figuren 3a und 3b zeigen die eingebaute Abschirmvorrichtung nach einem Umbiegen eines Abschnitts der hinteren Abschirmeinrichtung 354 der Abschirmvorrichtung. Dabei ist Figur 3a eine perspektivische Darstellung, Figur 3b ist eine Querschnittsdarstellung.The FIGS. 3a and 3b show the built-in shielding device after bending a portion of the rear shielding device 354 of the shielding device. It is FIG. 3a a perspective view, FIG. 3b is a cross-sectional view.

Die Schnapphaken für die nicht dargestellte Adapterplatte sind mit dem Bezugszeichen 314 versehen. Oberhalb der Leiterplattenebene ist ferner eine Steckerleiste 370 dargestellt, welche der elektrischen Kontaktierung des Rauchmelders dient.The snap hooks for the adapter plate, not shown, are provided with the reference numeral 314. Above the circuit board level, a plug strip 370 is also shown, which serves for the electrical contacting of the smoke detector.

Von der Fotodiode sind in Figur 3a lediglich die Anschlussstifte 342a und 342b zu erkennen, welche durch das Substrat 310 und damit durch die Leiterplatte 310b hindurch ragen. Ferner ist ein Anschlusskontakt 360 dargestellt, welcher der Kontaktierung und insbesondere der Erdung der Abschirmvorrichtung dient.From the photodiode are in FIG. 3a only to recognize the pins 342a and 342b, which protrude through the substrate 310 and thus through the circuit board 310b. Furthermore, a connection contact 360 is shown, which serves for the contacting and in particular the grounding of the shielding device.

In Figur 3b ist die vordere Abschirmeinrichtung 352 der Abschirmvorrichtung zu erkennen. Die Abschirmvorrichtung ist selbsthaltend in den Substrat 310 fixiert. Das Substrat 310 weist das mechanisches Trägerelement 310a und die Leiterplatte 310b auf.In FIG. 3b the front shielding means 352 of the shielding device can be seen. The shielding device is self-holding fixed in the substrate 310. The substrate 310 has the mechanical support element 310a and the circuit board 310b.

Wie aus den Figuren 3a und 3b ersichtlich, wurde die hintere Abschirmeinrichtung bzw. der metallische Streifen 354 im Bereich der Verjüngung 355 abgeknickt. Die dadurch entstandene Abknickung 355a grenzt dann einen ersten Abschnitt 356 mit der ersten Ausbeulung 356a von einem zweiten Abschnitt 357 mit der zweiten Ausbeulung 357a ab. Gemäß dem hier dargestellten Ausführungsbeispiel erstreckt sich der erste Abschnitt 356 im Wesentlichen senkrecht zu der Substratoberfläche, wohingegen der zweite Abschnitt 357 sich im Wesentlichen parallel zu der Substratoberfläche erstreckt. Damit schützt insbesondere der zweite Abschnitt der hinteren Abschirmeinrichtung 354 die Fotodiode vor den Einflüssen von elektromagnetrischer Störstrahlung, die von oben durch das Substrat hindurch auf die Fotodiode oder lediglich von oben auf die Anschlusskontakte 342a, 342b der Fotodiode trifft.Like from the FIGS. 3a and 3b As can be seen, the rear shielding or the metallic strip 354 has been bent in the region of the taper 355. The resulting bend 355a then delimits a first portion 356 with the first bulge 356a from a second portion 357 with the second bulge 357a. According to the embodiment illustrated here, the first portion 356 extends substantially perpendicular to the substrate surface, whereas the second portion 357 extends substantially parallel to the substrate surface. In particular, the second section of the rear shielding device 354 protects the photodiode from the effects of electromagnetic interference radiation from above through the substrate passes through the photodiode or only from above on the terminals 342a, 342b of the photodiode.

Es wird darauf hingewiesen, dass zur Verbesserung der Abschirmwirkung der hinteren Abschirmeinrichtung 354 auch der zweite Abschnitt 357 elektrisch leitend mit dem Anschlusskontakt 342b der Fotodiode verbunden werden kann. Dies ist jedenfalls dann sinnvoll, wenn der Anschlusskontakt 342b ohnehin mit dem elektrischen Potential 0 verbunden ist. Die elektrisch leitende Verbindung kann dabei einfach durch eine definierte mechanische Berührung zwischen dem vorderen Ende des zweiten Abschnitts 357 und/oder durch eine Lötverbindung erfolgen.It should be noted that in order to improve the shielding effect of the rear shielding device 354, the second section 357 can also be connected in an electrically conductive manner to the connection contact 342b of the photodiode. In any case, this makes sense if the connection contact 342b is in any case connected to the electrical potential 0. The electrically conductive connection can be done simply by a defined mechanical contact between the front end of the second portion 357 and / or by a solder joint.

In diesem Zusammenhang wird darauf hingewiesen, dass die Ausbeulung 357a nicht nur der Verbesserung der mechanischen Steifigkeit der hinteren Abschirmeinrichtung 354 dienen kann. Wie insbesondere aus Figur 3b ersichtlich, trägt die nach oben ausgebildete Ausbeulung in der hinteren Abschirmeinrichtung 354 auch dazu bei, dass mit dem Umknicken des Abschnitts 357 nicht versehentlich ein elektrischer Kontakt zwischen dem Anschlussstift 342a der Fotodiode und der hinteren Abschirmeinrichtung 354 bzw. der gesamten Abschirmvorrichtung hergestellt wird. Ein derartiger Kontakt würde nämlich zu einem Kurzschluss der zwischen den Anschlusskontakten 342a und 342b führen.In this connection, it should be noted that the bulge 357a can not only serve to improve the mechanical rigidity of the rear shield device 354. As in particular from FIG. 3b As can be seen, the upwardly formed bulge in the rear shielding device 354 also contributes to the fact that the buckling of the section 357 does not accidentally establish electrical contact between the photodiode pin 342a and the rear shielding device 354 or the entire shielding device. Namely, such a contact would lead to a short circuit between the terminal contacts 342a and 342b.

Die in dieser Anmeldung beschriebene Abschirmvorrichtung hat den Vorteil, dass sie auf kleinstem Raum einen umfassenden Schutz vor elektromagnetischer Störstrahlung bieten kann. Dieser Schutz bezieht sich auf Störstrahlung, welche von einer vorderen Seite des Substrats oder von einer hinteren Seite des Substrats (durch das Substrat hindurch) auf die Fotodiode trifft. Ein weitere wichtiger Vorteil der beschrieben Abschirmvorrichtung ist die einfache und damit auch kostengünstige Montage an bzw. in einem Substrat.The shielding device described in this application has the advantage that it can provide comprehensive protection against electromagnetic interference in the smallest space. This protection refers to spurious radiation which strikes the photodiode from a front side of the substrate or from a back side of the substrate (through the substrate). Another important advantage of the shielding device described is the simple and therefore cost-effective installation on or in a substrate.

Es wird darauf hingewiesen, dass die hier beschriebenen Ausführungsformen lediglich eine beschränkte Auswahl an möglichen Ausführungsvarianten der Erfindung darstellen. So ist es möglich, die Merkmale einzelner Ausführungsformen in geeigneter Weise miteinander zu kombinieren, so dass für den Fachmann mit den hier expliziten Ausführungsvarianten eine Vielzahl von verschiedenen Ausführungsformen als offensichtlich offenbart anzusehen sind.It should be noted that the embodiments described herein represent only a limited selection of possible embodiments of the invention. Thus, it is possible to suitably combine the features of individual embodiments with one another, so that for the person skilled in the art with the variants of embodiment that are explicit here, a multiplicity of different embodiments are to be regarded as obviously disclosed.

BezugszeichenlisteLIST OF REFERENCE NUMBERS

100100
Rauchmelder (ohne Haube)Smoke detector (without hood)
110110
Substratsubstratum
110a110a
mechanisches Trägerelementmechanical carrier element
112112
Schnapphaken (für Haube)Snap hook (for hood)
114114
Schnapphaken (für Adapterplatte)Snap hook (for adapter plate)
120120
erste Lichtsendeeinrichtungfirst light emitting device
130130
zweite Lichtsendeeinrichtungsecond light emitting device
140140
LichtempfangseinrichtungLight receiving means
142142
Lichtempfänger / FotodiodeLight receiver / photodiode
144144
Empfängerlinsereceiver lens
150150
Abschirmvorrichtungshielding
152152
vordere Abschirmeinrichtungfront shielding device
154154
hintere Abschirmeinrichtung / metallischer Streifenrear shield / metallic strip
155155
Verjüngungrejuvenation
156a156a
erste Ausbeulungfirst bulge
157a157a
zweite Ausbeulungsecond bulge
210210
Substratsubstratum
210a210a
mechanisches Trägerelementmechanical carrier element
210b210b
Leiterplattecircuit board
214214
Schnapphaken (für Adapterplatte)Snap hook (for adapter plate)
242a242a
Anschlusskontakt von FotodiodeConnection contact of photodiode
242b242b
Anschlusskontakt von FotodiodeConnection contact of photodiode
252252
vordere Abschirmeinrichtungfront shielding device
254254
hintere Abschirmeinrichtung / metallischer Streifenrear shield / metallic strip
255255
Verjüngungrejuvenation
256a256a
erste Ausbeulungfirst bulge
257a257a
zweite Ausbeulungsecond bulge
260260
Anschlusskontaktconnection contact
270270
Steckerleistepower strip
310310
Substratsubstratum
310a310a
mechanisches Trägerelementmechanical carrier element
310b310b
Leiterplattecircuit board
314314
Schnapphaken (für Adapterplatte)Snap hook (for adapter plate)
342a342a
Anschlusskontakt von FotodiodeConnection contact of photodiode
342b342b
Anschlusskontakt von FotodiodeConnection contact of photodiode
352352
vordere Abschirmeinrichtungfront shielding device
354354
hintere Abschirmeinrichtung / metallischer Streifenrear shield / metallic strip
355355
Verjüngungrejuvenation
355a355a
Abknickungkinking
356356
erster Abschnittfirst section
356a356a
erste Ausbeulungfirst bulge
357357
zweiter Abschnittsecond part
357a357a
zweite Ausbeulungsecond bulge
360360
Anschlusskontaktconnection contact
370370
Steckerleistepower strip

Claims (9)

  1. Light receiver device for an optical smoke detector (100), having a flat substrate (110, 210, 310), a light receiver (142) mounted on a front side of the substrate (110, 210, 310), and a shielding device (150),
    - the shielding device (150) for shielding the light receiver (142) against electromagnetic interference radiation having a front shielding device (152, 252, 352) located on the front side of the substrate (110, 210, 310), as well as a metal strip as a rear shielding device (154, 254, 354) on the back side of the substrate (110, 210, 310),
    - the metal strip (154, 254, 354) penetrating the substrate (110, 210, 310) from the front side to an opposing back side of the substrate (110, 210, 310) and having a first and second section (356, 357),
    - the first section (356) extending essentially perpendicular and the second section (357) extending essentially parallel to the surface of the substrate (110, 210, 310), and
    - the second section being provided to shield the terminal pins (342a, 342b) of the light receiver (142) against electromagnetic interference radiation which penetrate the substrate (110, 210, 310).
  2. Light receiver device according to claim 1, the metal strip (154, 254, 354) being fixed in a self-retaining fashion in the substrate (110, 210, 310).
  3. Light receiver device according to claim 1, the metal strip (154, 254, 354) having at least one bulge (157a, 257a, 357a).
  4. Light receiver device according to one of the preceding claims, the rear shielding device (154, 254, 354) having a bend (355a) on the back side of the substrate (110, 210, 310), which separates the first section (356) of the shielding device (150) and the second section (357) of the shielding device (150) from one another.
  5. Light receiver device according to claim 4, the rear shielding device (154, 254, 354) having a narrowing (155, 255, 355) in the region of the bend (355a).
  6. Light receiver device according to one of the preceding claims, further having a terminal contact (260, 360) for providing electrical contact with the shielding device (150).
  7. Light receiver device according to one of the preceding claims, the substrate (110, 210, 310) having a printed circuit board (210b, 310b).
  8. Light receiver device according to one of the preceding claims, the substrate (110, 210, 310) having a mechanical support element (110a, 210a, 310a).
  9. Light receiver device according to one of the preceding claims, the light receiver being a photodiode (142).
EP08875243A 2008-10-29 2008-10-29 Light receiver device having a shielding device extending on a back side of a substrate Active EP2342701B1 (en)

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PCT/EP2008/064657 WO2010048991A1 (en) 2008-10-29 2008-10-29 Light receiver device having a shielding device extending on a back side of a substrate

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CN (1) CN102203834B (en)
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US20130342494A1 (en) * 2012-06-21 2013-12-26 Htc Corporation Auxiliary input device, and electronic device and electronic system including the auxiliary input device
CN109615816A (en) * 2019-01-31 2019-04-12 中磊电子（苏州）有限公司 It can avoid the smoke detector of false alarm
WO2022201337A1 (en) * 2021-03-24 2022-09-29 ホーチキ株式会社 Element mounting means, electrode means manufacturing method, and smoke detector manufacturing method

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EP2091031A1 (en) * 2008-02-15 2009-08-19 Siemens Aktiengesellschaft Optical smoke alarm with amplifier integrated in light receiver

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63163698A (en) * 1986-12-26 1988-07-07 ホーチキ株式会社 Scattered light type smoke sensor
JP2533653B2 (en) * 1989-09-26 1996-09-11 松下電工株式会社 Photoelectric smoke detector
DE4328671B4 (en) * 1992-08-28 2005-02-17 Hochiki K.K. Scattered light smoke
US5400014A (en) * 1993-07-12 1995-03-21 Detection Systems, Inc. Smoke detector with dark chamber
DE9412367U1 (en) 1994-08-01 1994-09-22 Siemens AG, 80333 München Device for shielding a receiving diode
JPH09270085A (en) 1996-04-01 1997-10-14 Hamamatsu Photonics Kk Smoke production detector
TW504849B (en) * 1997-02-25 2002-10-01 Matsushita Electric Ind Co Ltd Optical receiver
JP3370032B2 (en) * 1999-11-01 2003-01-27 ホーチキ株式会社 Photoelectric smoke detector and smoke detector assembly
US6876305B2 (en) * 1999-12-08 2005-04-05 Gentex Corporation Compact particle sensor
CA2293830C (en) * 1999-12-31 2008-07-29 Digital Security Controls Ltd. Photoelectric smoke detector and chamber therefor
TWI235965B (en) 2001-04-24 2005-07-11 Matsushita Electric Works Ltd Fire detector unit

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2091031A1 (en) * 2008-02-15 2009-08-19 Siemens Aktiengesellschaft Optical smoke alarm with amplifier integrated in light receiver

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CN102203834B (en) 2014-05-14
ES2398867T3 (en) 2013-03-22
EP2342701A1 (en) 2011-07-13
WO2010048991A1 (en) 2010-05-06
CN102203834A (en) 2011-09-28
US20110260876A1 (en) 2011-10-27
US8878683B2 (en) 2014-11-04

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