EP0320875B1 - Lighting device for household appliances such as ovens - Google Patents

Lighting device for household appliances such as ovens Download PDF

Info

Publication number
EP0320875B1
EP0320875B1 EP88120801A EP88120801A EP0320875B1 EP 0320875 B1 EP0320875 B1 EP 0320875B1 EP 88120801 A EP88120801 A EP 88120801A EP 88120801 A EP88120801 A EP 88120801A EP 0320875 B1 EP0320875 B1 EP 0320875B1
Authority
EP
European Patent Office
Prior art keywords
lamp
insulating material
lamp holder
contact
protective element
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP88120801A
Other languages
German (de)
French (fr)
Other versions
EP0320875A2 (en
EP0320875A3 (en
Inventor
Günter Dipl.-Ing. Hammerl
Kurt Lintner
Josef Dipl.-Ing. Krautscheid
Johann Klement
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.)
BOSCH-SIEMENS HAUSGERAETE GMBH
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP0320875A2 publication Critical patent/EP0320875A2/en
Publication of EP0320875A3 publication Critical patent/EP0320875A3/en
Application granted granted Critical
Publication of EP0320875B1 publication Critical patent/EP0320875B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R33/00—Coupling devices specially adapted for supporting apparatus and having one part acting as a holder providing support and electrical connection via a counterpart which is structurally associated with the apparatus, e.g. lamp holders; Separate parts thereof
    • H01R33/05—Two-pole devices
    • H01R33/06—Two-pole devices with two current-carrying pins, blades or analogous contacts, having their axes parallel to each other
    • H01R33/09—Two-pole devices with two current-carrying pins, blades or analogous contacts, having their axes parallel to each other for baseless lamp bulb
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V19/00—Fastening of light sources or lamp holders
    • F21V19/0005—Fastening of light sources or lamp holders of sources having contact pins, wires or blades, e.g. pinch sealed lamp
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V25/00—Safety devices structurally associated with lighting devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
    • F24C15/00—Details
    • F24C15/008—Illumination for oven cavities
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
    • F21W2131/00—Use or application of lighting devices or systems not provided for in codes F21W2102/00-F21W2121/00
    • F21W2131/30—Lighting for domestic or personal use
    • F21W2131/307—Lighting for domestic or personal use for ovens
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/44—Means for preventing access to live contacts

Abstract

A lighting device for household appliances such as ovens, includes an electric lamp socket formed of electrically insulating material preventing leakage currents. Contact parts are disposed in the socket. The socket has an access side with a plug-in opening formed therein into which a lamp with a glass bulb, a lamp base of insulating material and contact prongs protruding from the lamp base is to be plugged into contact with the contact parts in a given plug-in direction. An electrically conductive and protectively grounded protective element covers at least the access side of the lamp socket and extends to the vicinity of at least one of the glass bulb and the lamp base. The protective element and the contact parts are spaced apart by a distance being greater than the length of the contact prongs by a required margin of safety, as seen in the given plug-in direction.

Description

Die vorliegende Erfindung bezieht sich auf eine elektrische Beleuchtungseinrichtung für Hausgeräte, wie Backöfen mit einer aus Isolierstoff bestehenden elektrischen, Kontaktteile aufweisenden Lampenfassung, in die eine einen aus Isoliermaterial bestehenden Lampensockel aufweisende Lampe mit ihren von diesem Lampensockel ausgehenden Kontaktstiften einsteckbar und mit den Kontaktteilen der Lampenfassung kontaktierbar ist, wobei der Einstecköffnung der Lampenfassung Schutzelemente aus elektrisch isolierendem Material zugeordnet sind, die sich über eine die Steckkontaktstrecke bzw. die Kontaktstifte mit erforderlichem Sicherheitsbetrag übersteigende Länge der Lampen-Steckbewegung erstrecken.The present invention relates to an electrical lighting device for domestic appliances, such as ovens, with an electrical, contact parts having a lamp holder made of insulating material, into which a lamp having an lamp base made of insulating material, with its contact pins emanating from this lamp base, can be inserted and contacted with the contact parts of the lamp holder is, wherein the insertion opening of the lamp holder protective elements made of electrically insulating material are assigned, which extend over a length of the lamp plug-in movement exceeding the plug-in contact distance or the contact pins with the required safety amount.

Derartige Beleuchtungseinrichtungen können eigenständige elektrische Leuchten sein, welche in den Haushaltsgeräten angeordnet werden, oder sie sind integraler Bestandteil von Hausgeräten.Such lighting devices can be independent electrical lights, which are arranged in the household appliances, or they are an integral part of household appliances.

Für derartige elektrische Beleuchtungseinrichtungen besteht aus Sicherheitsgründen die Forderung, daß beim Ein- und Aufstecken der Lampe eine Berührung von stromführenden Kontaktteilen selbst bei unsachgemäßer Handhabung nicht möglich sein darf. Darüber hinaus ist auch zu berücksichtigen, daß genügend große Abstände zwischen stromführenden Teilen und berührbaren Bereichen sowie sonstigen elektrisch leitfähigen Materialien als Freiraum und als Isoliermaterialstrecke eingehalten werden, damit die Gefahr von elektrischen Überschlägen und sich ausbildenden elektrischen Kriechstrecken zwischen den stromführenden Teilen und berührbaren Bereichen sowie weiteren elektrisch leitfähigen Teilen weitestgehend ausgeschlossen sind.For safety reasons, there is a requirement for such electrical lighting devices that, when the lamp is plugged in and plugged in, contact with current-carrying contact parts must not be possible, even with improper handling. In addition, it must also be taken into account that sufficiently large distances between current-carrying parts and touchable areas and other electrically conductive materials are maintained as free space and as an insulating material path, so that there is a risk of electrical flashovers and developing electrical creepage distances between the current-carrying parts and touchable areas and others electrically conductive parts are largely excluded.

So wird gefordert, daß berührbare metallische Teile, die mit einem Schutzleiter verbunden sind, von spannungsführenden Teilen bei einer Arbeitsspannung von bis zu 130 V durch eine Betriebsisolierung getrennt sein müssen, und zwar unter Beachtung einer Luftstrecke von mindestens 1,5 mm und einer Kriechstrecke über das Isoliermaterial von mindestens 2,0 mm. Da auch bei Hausgeräten Überspannungen auftreten können, sind für berührbare Glaskolben von Lampen darüber hinausgehende Sicherheitsabstände von spannungsführenden Teilen zu beachten, und zwar dahindgehend, daß gemessen an der im ungünstigsten Fall noch berührbaren Stelle an diesem Glaskolben eine Prüfspannung von 2750 V an den spannungsführenden Teilen sich nicht schädlich auswirkt. Dazu sind Luftstrecken von mindestens 8,0 mm und über das isolierende Material führende Kriechstrecken von mindestens 8,0 mm zu realisieren.It is required that touchable metallic parts, which are connected to a protective conductor, must be separated from live parts with a working voltage of up to 130 V by operational insulation, taking into account an air gap of at least 1.5 mm and a creepage distance above the insulation material of at least 2.0 mm. Since overvoltages can also occur in household appliances, safety distances from live parts that can be touched for touchable glass bulbs of lamps have to be observed, to the extent that, in the worst case, the test point on this glass bulb has a voltage of 2750 V on the live parts not harmful. Clearances of at least 8.0 mm and creepage distances of at least 8.0 mm over the insulating material are to be implemented.

Bei einer elektrischen Leuchte für Hausgeräte sind beispielsweise bekanntgewordene Maßnahmen anwendbar (DE-U 87 11 524), wonach in der Einstecköffnung der Lampenfassung Berührungsschutzelemente angeordnet sind, die über eine die Steckkontaktstrecke bzw. die Kontaktstifte übersteigende Länge der Lampen-Steckbewegung zwischen den Kontaktstiften und der Leuchten-Steckseite einen den manuellen Durchgriff verhindernden Schutzspalt bilden. Diese Berührungsschutzelemente bestehen aus elektrisch isolierendem Material. Wahlweise sind diese Berührungsschutzelemente entweder der Lampe oder dem Lampensockel der elektrischen Leuchte Zugeordnet. Es ist auch eine Steckerverbindung bekannt geworden (GB-A 20 18 055), bei der geerdete Schutzringe vor Steckbuchsen durch ein Isolierstück getrennt angeordnet sind. Diese Maßnahme dient dem Schutz von Personen bei unvorschriftsmäßigem Einstecken von metallischen Stiften.In the case of an electrical light for household appliances, measures which have become known can be used, for example (DE-U 87 11 524), according to which contact protection elements are arranged in the insertion opening of the lamp holder, and these extend over a length of the lamp plug-in movement between the contact pins and the contact plug or contact pins Insert the luminaire into a protective gap that prevents manual access. These contact protection elements are made of electrically insulating material. These contact protection elements are optionally assigned to either the lamp or the lamp base of the electric light. A connector has also become known (GB-A 20 18 055), in which earthed protective rings are arranged in front of sockets separated by an insulating piece. This measure is used to protect people if metal pins are inserted incorrectly.

Der vorliegenden Erfindung liegt die Aufgabe zugrunde, elektrische Beleuchtungseinrichtungen dahingehend auszugestalten, daß sowohl die Berührung von stromführenden Teilen gänzlich ausgeschlossen wird und darüberhinaus genügender Schutz gegen Bildung von elektrischen Überschlägen und Kriechstrecken bei Überspannungen gegeben ist. Insbesondere sollen diese Maßnahmen einsetzbar sein im Zusammenhang mit kleinen Einbaumaßen und gedrängter Bauweise, wie sie üblicherweise bei Beleuchtungseinrichtungen mit Stecksockelfassungen, also insbesondere für sogenannte Niedrvoltlampen, beispielsweise Halogenlampen befolgt werden.The present invention has for its object to design electrical lighting devices so that both the contact with live parts is completely excluded and there is also sufficient protection against the formation of electrical flashovers and creepage distances in the event of overvoltages. In particular, these measures should be usable in connection with small installation dimensions and compact design, as are usually followed in lighting devices with plug-in sockets, in particular for so-called low-voltage lamps, for example halogen lamps.

Eine elektrische Beleuchtungseinrichtung, die diesen Anforderungen in hervorragendem Maße gerecht wird, ist erfindungsgegemäß dadurch gekennzeichnet, daß die aus elektrisch isolierendem Material bestehende Kriechströme ausreichend ausschließende Lampenfassung zumindest auf der Zugriffseite der Lampenfassung der Beleuchtungseinrichtung überdeckt ist mit einem bis in den Nahbereich des Lampenglaskolbens bzw. dessen aus Isoliermaterial bestehenden Lampensockels heranreichendes, elektrisch leitendes und schutzgeerdetes Schutzelement und daß der Abstand zwischen diesem Schutzelement und den Kontaktteilen der Lampenfassung in Steckrichtung der Lampe um einen geforderten Sicherheitsbetrag größer ist als die Länge der Kontaktstifte der Lampe.An electrical lighting device that meets these requirements to an outstanding degree is characterized according to the invention in that the leakage currents consisting of electrically insulating material are sufficiently exclusive The lamp holder is covered at least on the access side of the lamp holder of the lighting device with an electrically conductive and protective-earthed protective element reaching into the vicinity of the lamp glass bulb or its lamp base made of insulating material and that the distance between this protective element and the contact parts of the lamp holder in the plug-in direction of the lamp a required security amount is greater than the length of the contact pins of the lamp.

Diese Maßnahme nach den erfindungsgemäßen Merkmalen stellt sicher, daß ein schutzgeerdetes Schutzelement einen sicheren Berührungsschutz gegenüber den stromführenden Teilen der Lampenfassung sowie der Kontaktstifte der Lampe insbesondere bei deren Auswechslung bietet. Trotz der Isoliermaßnahmen auftretende Überschläge und Kriechströme werden damit durch die getroffenen Maßnahmen für die Bedienungsperson sicher unschädlich gemacht.This measure according to the features according to the invention ensures that a protective-earthed protective element offers reliable protection against contact with the live parts of the lamp holder and the contact pins of the lamp, in particular when they are replaced. In spite of the insulation measures, arcing and leakage currents are certainly made harmless to the operator by the measures taken.

Nach einer bevorzugten Ausgestaltung ist die erfindungsgemäße elektrische Beleuchtungseinrichtung dadurch gekennzeichnet, daß das elektrisch leitende und schutzgeerdete Schutzelement platinenartig ausgebildet und mit einem dem Querschnitt der Lampe entsprechend freizügigen Ausnehmung ausgestaltet zugriffsseitig vor der aus elektrisch isolierendem Material bestehenden Lampenfassung angeordent ist.According to a preferred embodiment, the electrical lighting device according to the invention is characterized in that the electrically conductive and protective-grounded protective element is designed like a plate and is arranged on the access side in front of the lamp holder made of electrically insulating material, and is designed with a recess that is corresponding to the cross section of the lamp.

Das platinenartig ausgebildete, elektrisch leitende und schutzgeerdete Schutzelement kann in diesem Zusammenhang entweder rohrförmig die aus Isoliermaterial bestehende Lampenfassung umschließend ausgebildet bzw. weitergeführt sein, bzw. auf am aus Isoliermaterial bestehenden Lampenfassung vorbeiführenden Streben angeordnet sein. Über beide Maßnahmen ist dieses elektrisch leitende Schutzelement mit schutzgeerdeten Gehäuseteilen elektrisch leitend verbunden.The circuit-board-like, electrically conductive and protective-earthed protective element can in this connection either be designed in a tubular manner to enclose or continue the lamp holder made of insulating material, or it can be arranged on struts leading past the lamp holder made of insulating material. This electrically conductive protective element is connected in an electrically conductive manner to protective-earthed housing parts by means of both measures.

Nach einer bevorzugten Weiterbildung ist die erfindungsgemäße elektrische Beleuchtungseinrichtung dadurch gekennzeichnet, daß das elektrisch leitende, schutzgeerdete Schutzelement mit räumlichem Abstand zur aus Isoliermaterial bestehenden Lampenfassung angeordnet ist. Damit wird nicht nur der Kriechstromabstand zwischen den elektrisch leitfähigen Teilen vergrößert, sondern auch erreicht, daß das elektrisch leitende und damit auch üblicherweise gut wärmeleitende Schutzelement zusätzlich ein Wärmeschild darstellt, das die Kontaktstelle zwischen den Kontaktstiften der Lampe und den Kontaktteilen der Lampenfassung wärmetechnisch abschirmt. Dies ist besonders wünschenswert bei dem Einsatz der elektrischen Beleuchtungseinrichtung in Backöfen. Die hohen Backtemperaturen stellen nämlich eine hohe Belastung für diese Steckverbindungen dar.According to a preferred development, the electrical lighting device according to the invention is characterized in that the electrically conductive, protective-grounded protective element is arranged at a spatial distance from the lamp holder made of insulating material. This not only increases the leakage current gap between the electrically conductive parts, but also ensures that this is electrical conductive and thus usually also good heat-conducting protective element also represents a heat shield that shields the contact point between the contact pins of the lamp and the contact parts of the lamp holder. This is particularly desirable when the electrical lighting device is used in ovens. The high baking temperatures put a high load on these connectors.

Nach den Merkmalen der Erfindung ausgestattete Ausführungsbeispiele sind anhand der Zeichnung im folgenden näher erläutert. Es zeigen:

Fig. 1
eine Anordnung mit einem elektrisch leitenden Schutzelement, welches rohrförmig das aus Isoliermaterial bestehende Lampenfassung umschließt und
Fig. 2
ein schildartiges, elektrisch leitendes und schutzgeerdetes Schutzelement, welches auf am aus Isoliermaterial bestehenden Lampenfassung seitlich vorbeigeführten Streben angeordnet ist.
Exemplary embodiments equipped according to the features of the invention are explained in more detail below with reference to the drawing. Show it:
Fig. 1
an arrangement with an electrically conductive protective element, which tubularly encloses the lamp holder made of insulating material and
Fig. 2
a shield-like, electrically conductive and protective-grounded protective element, which is arranged on struts which are guided past the lamp holder made of insulating material.

In den Figuren ist die erfindungsgemäße Beleuchtungseinrichtung jeweils als eigenständige Leuchte dargestellt, und zwar in stark vergrößertem Maßstab.In the figures, the lighting device according to the invention is shown in each case as an independent luminaire, to be precise on a greatly enlarged scale.

In einem napfartigen, einseitig offenen Lampengehäuse 1 ist eine aus elektrisch isolierendem Material, z.B. Keramik, bestehende Lampenfassung 2 befestigt. In diese Lampenfassung 2 ist eine Lampe 3, üblicherweise eine Niederspannungslampe eingesteckt. Diese Lampe 3 besitzt einen üblicherweise zylindrischen Lampenkolben 4, welcher zu einem eingequetschten oder verjüngten Lampensockel 5 übergeführt ist, sowie Kontaktstifte 6 der Länge a. In der gezeigten eingesteckten Stellung der Lampe 3 kontaktieren die Kontaktstifte 6 mit elektrischen Kontaktteilen 7 des Lampensockels, wobei sich diese Kontaktteile 7 in Form von Kontaktschienen entlang den Kontaktstiften 6 erstrecken und durch Federn 8 gegen die Kontaktstifte 6 gedrückt werden. Der Berührungsbereich zwischen den Kontaktteilen 7 und den Kontaktstiften 6 wird nachstehend als Steckkontaktstrecke bezeichnet. Durch Einstecköffnungen 9 sind die Kontaktstifte 6 gegenüber den Kontaktteilen 7 vorzentriert Im Anschluß ab diese Einstecköffnungen 9 besitzt die Lampenfassung 2 eine angeformte, rohrartige Verlängerung 10 größeren Durchmessers, in welchen zumindest ein Großteil des Lampensockels 5 hineinpaßt.A lamp holder 2 made of electrically insulating material, for example ceramic, is fastened in a cup-like lamp housing 1 which is open on one side. A lamp 3, usually a low-voltage lamp, is inserted into this lamp holder 2. This lamp 3 has a usually cylindrical lamp bulb 4, which is transferred to a pinched or tapered lamp base 5, and contact pins 6 of length a. In the inserted position of the lamp 3 shown, the contact pins 6 make contact with electrical contact parts 7 of the lamp base, these contact parts 7 extending in the form of contact rails along the contact pins 6 and being pressed against the contact pins 6 by springs 8. The area of contact between the contact parts 7 and the contact pins 6 is referred to below as the plug contact path. Through plug-in openings 9, the contact pins 6 are precentered with respect to the contact parts 7. From these plug-in openings 9, the lamp holder 2 has a molded, tubular extension 10 of larger diameter, into which at least a large part of the lamp base 5 fits.

Auf einen Flansch 11 des Lampengehäuses 1 ist eine linsenförmige, transparente Glasabdeckung 12 aufgeschraubt. Zum Einsetzen oder Auswechseln der Lampe 3 wird diese Glasabdeckung 12 abgeschraubt. Wird nun z.B. die Lampe 3 aus der Lampenfassung 2 herausgezogen, so soll der Gefahr begegnet sein, daß eine manuelle Berührung mit den von den Kontaktteilen 7 noch nicht völlig gelösten Kontaktstiften 6 stattfindet.A lens-shaped, transparent glass cover 12 is screwed onto a flange 11 of the lamp housing 1. This glass cover 12 is unscrewed for inserting or replacing the lamp 3. Now e.g. the lamp 3 is pulled out of the lamp holder 2, the danger should be met that there is a manual contact with the contact pins 6 which have not yet been completely detached from the contact parts 7.

Um diese Gefahr zu bannen, ist bei der Anordnung gemäß Fig. 1 oberhalb des aus isolierendem Keramikmaterial bestehenden Lampenfassung 2 ein Schutzelement 13 aus elektrisch leitendem Material angeordnet, welches die rohrartige Verlängerung 10 der aus isolierendem Keramikmaterial bestehenden Lampenfassung 2 zylinderförmig umschließt, im oberen Bereich nahe an die Wandung des Lampensockels 5 herangeführt ist und im unteren Bereich über durch die Lampenfassung 2 hindurchgeführte Verbindungsbolzen 14 elektrisch leitend mit dem Lampengehäuse 1 verbunden ist und damit mit diesem schutzgeerdet werden kann. Dabei ist die Länge e zwischen der Oberkante des Schutzelements 13 und der ersten Kontaktiermöglichkeit zwischen den Kontaktstiften 6 und den Kontaktteilen 7 größer als die Länge a der Kontaktstifte 6 und der Wandstärke des Schutzelements 13 bemessen, und zwar größer um einen Betrag, der den geforderten Sicherheitsabständen entspricht. Durch die rohrartige Verlängerung 10 der Lampenfassung 2 werden die Entfernungen zwischen den stromführenden Teilen und dem schutzgeerdeten Teil auf der Keramikoberfläche zur Verhinderung von Kriechstrecken auf das erforderliche Maß gebracht. Zwischen der Innenwandung des Schutzelements 13 und der Lampenfassung 2 ist ein Luftspalt vorgesehen, in dem eine Luftkonvektion begrenzt möglich ist. Durch diese Maßnahme bildet das elektrisch leitende und schutzgeerdete Schutzelement 13 gegenüber der Lampenfassung 2 auch einen Wärmeschild, so daß insbesondere die elektrischen Kontaktstellen zwischen den Kontaktstiften 6 und den Kontaktteilen 7 wärmetechnisch entlastet werden.In order to avoid this danger, in the arrangement according to FIG. 1, a protective element 13 made of electrically conductive material is arranged above the lamp holder 2 made of insulating ceramic material, which encloses the tubular extension 10 of the lamp holder 2 made of insulating ceramic material in a cylindrical manner, near the top is brought up to the wall of the lamp base 5 and is connected in an electrically conductive manner to the lamp housing 1 in the lower region via connecting bolts 14 passed through the lamp holder 2 and can therefore be grounded with the latter. The length e between the upper edge of the protective element 13 and the first possibility of contacting between the contact pins 6 and the contact parts 7 is greater than the length a of the contact pins 6 and the wall thickness of the protective element 13, namely by an amount that corresponds to the required safety distances corresponds. Due to the tubular extension 10 of the lamp holder 2, the distances between the current-carrying parts and the protective-earthed part on the ceramic surface are brought to the required level in order to prevent creepage distances. An air gap is provided between the inner wall of the protective element 13 and the lamp holder 2, in which air convection is possible to a limited extent. As a result of this measure, the electrically conductive and protective-earthed protective element 13 also forms a heat shield with respect to the lamp holder 2, so that in particular the electrical contact points between the contact pins 6 and the contact parts 7 are relieved in terms of heat.

Gemäß Fig. 2 ist für den Berührungsschutz ein platinenartig ausgebildetes Schutzelement 17 angeordnet, welches über Streben 18 auf dem Lampengehäuse 1 befestigt und mit diesem elektrisch leitend verbunden ist. Die anzustrebenden Abstandsverhältnisse entsprechen denen bei der Ausführungsform gemäß Fig. 1.According to FIG. 2, a circuit-like protective element 17 is arranged for the protection against contact, which is fastened to the lamp housing 1 via struts 18 and is connected to it in an electrically conductive manner. The desired distance ratios correspond to those in the embodiment according to FIG. 1.

Claims (5)

  1. Illuminating equipment for domestic appliances, such as baking ovens, with a lamp holder, which consists of insulating material and comprises electrical contact parts and into which a lamp comprising a lamp base of insulating material is pluggable by its contact pins projecting from this lamp base and bringable into contact with the contact parts of the lamp holder, wherein the insertion opening of the lamp holder is associated with protective elements of electrically insulating material, which extend over a length of the plugging movement of the lamp exceeding the plug contact path or the contact pins by the required safety margin, characterised thereby, that the lamp holder (2), which consists of electrically insulating material and adequately excludes creep currents, is covered at least on the access side of the lamp holder (2) of the illuminating equipment by an electrically conducting and protectively earthed protective element (13, 17) reaching into the proximity of the lamp glass bulb (4) or its lamp base (5) consisting of insulating material and that the spacing between this protective element (13, 17) and the contact parts (7) of the lamp holder (2) in the plugging direction of the lamp (3) is greater than the length of the contact pins (6) of the lamp (3) by a required safety margin.
  2. Illuminating equipment according to claim 1, characterised thereby, that the electrically conducting and protectively earthed protective element (13, 17) is constructed in the manner of a plate, structured with a cut-out amply corresponding to the cross-section of the lamp (3) and arranged on the access side in front of the lamp holder (2) consisting of electrically insulating material.
  3. Illuminating equipment according to claim 2, characterised thereby, that the electrically conducting and protectively earthed protective element (13), which is constructed in the manner of a plate, is constructed or continued to be tubularly surrounding the lamp holder (2) consisting of insulating material.
  4. Illuminating equipment according to claim 2, characterised thereby, that the electrically conducting and protectively earthed protective element (17), which is constructed in the manner of a plate is arranged on stays leading past the lamp holder (2) consisting of insulating material.
  5. Illuminating equipment according to one of the claims 1 to 4, characterised thereby, that the electrically conducting and protectively earthed protective element (13, 17) is arranged at a spatial distance from the lamp holder (2) consisting of insulating material.
EP88120801A 1987-12-15 1988-12-13 Lighting device for household appliances such as ovens Expired - Lifetime EP0320875B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3742509 1987-12-15
DE19873742509 DE3742509A1 (en) 1987-12-15 1987-12-15 ELECTRICAL LIGHTING DEVICE FOR HOME APPLIANCES LIKE OVENS

Publications (3)

Publication Number Publication Date
EP0320875A2 EP0320875A2 (en) 1989-06-21
EP0320875A3 EP0320875A3 (en) 1990-05-16
EP0320875B1 true EP0320875B1 (en) 1994-07-27

Family

ID=6342665

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88120801A Expired - Lifetime EP0320875B1 (en) 1987-12-15 1988-12-13 Lighting device for household appliances such as ovens

Country Status (6)

Country Link
US (1) US4870546A (en)
EP (1) EP0320875B1 (en)
AT (1) ATE109268T1 (en)
DE (2) DE3742509A1 (en)
ES (1) ES2056884T3 (en)
YU (1) YU47175B (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8903947U1 (en) * 1989-03-31 1990-10-18 Heraeus Instruments Gmbh, 6450 Hanau, De
US5121304A (en) * 1990-10-15 1992-06-09 Gte Products Corporation Vehicle lamp
EP0543448B1 (en) * 1991-11-18 1999-07-14 Koninklijke Philips Electronics N.V. Electric reflector lamp
IT1267720B1 (en) * 1994-05-20 1997-02-07 Zanussi Elettrodomestici REFRIGERATOR WITH IMPROVED LAMP HOLDER
US5660452A (en) * 1995-08-25 1997-08-26 Maytag Corporation Indicator light for an appliance
US5879073A (en) * 1996-01-29 1999-03-09 Koito Manufacturing Co., Ltd. Vehicular lamp having discharge bulb
US6361181B1 (en) 2000-02-28 2002-03-26 Maytag Corporation Appliance with light mounted in door
US7931381B2 (en) * 2008-12-19 2011-04-26 Whirlpool Corporation Lighting system for cooking appliance
DE102015114253B4 (en) 2015-08-27 2017-06-22 Bjb Gmbh & Co. Kg oven light
DE102021112796B3 (en) 2021-05-18 2022-06-23 Bjb Gmbh & Co. Kg Lamp socket with non-riveted contact connection

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE406613C (en) * 1921-06-04 1924-11-29 Heinrich Gothe Hinged incandescent lamp fitting, one pole of which is earthed, with spring contacts fixed in the housing and with a fuse in the cover
GB524025A (en) * 1939-01-19 1940-07-29 Gen Electric Co Ltd Improvements in and relating to electric lighting fittings
FR1324333A (en) * 1962-03-06 1963-04-19 Safety device for lamps, in particular for motor vehicle headlamp lamps
NL6816006A (en) * 1968-11-09 1970-05-12
FR2421485A1 (en) * 1978-03-31 1979-10-26 Barthelemy Louis SAFETY POWER SOCKET
US4222623A (en) * 1978-07-26 1980-09-16 Tore Hultberg Glow-lamp holder
DE2921425C3 (en) * 1979-05-26 1985-10-10 Pistor + Boss GmbH, 5880 Lüdenscheid Electric lamp for illuminating ovens
DE8131006U1 (en) * 1981-10-23 1983-04-07 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH, 8000 München ELECTRIC LAMP
DE8710698U1 (en) * 1987-08-05 1987-09-17 Korsch, Alfred, 4154 Toenisvorst, De
DE8711524U1 (en) * 1987-08-25 1987-10-08 Bosch-Siemens Hausgeraete Gmbh, 8000 Muenchen, De

Also Published As

Publication number Publication date
ES2056884T3 (en) 1994-10-16
EP0320875A2 (en) 1989-06-21
DE3850864D1 (en) 1994-09-01
DE3742509C2 (en) 1992-07-30
EP0320875A3 (en) 1990-05-16
US4870546A (en) 1989-09-26
DE3742509A1 (en) 1989-06-29
YU47175B (en) 1995-01-31
YU226188A (en) 1991-04-30
ATE109268T1 (en) 1994-08-15

Similar Documents

Publication Publication Date Title
EP1925060B1 (en) Explosion-proof plug-in connector
DE3210005A1 (en) COMPACT FLUORESCENT LAMP
EP0320875B1 (en) Lighting device for household appliances such as ovens
DE2658287C3 (en) Ionizing device
EP0320874B1 (en) Lighting arrangement for an oven heated by microwaves, especially a domestic cooking oven
EP1741117B1 (en) Switchgear
EP0772170A1 (en) Automatic fire detector
DE102016005508A1 (en) High-voltage connector
EP0545508B1 (en) Metal-enclosed, gas insulated switch installation with a cable terminal box
EP0012234A1 (en) Fluorescent lighting fixture
DE102006021055A1 (en) Adapter for a built-in lamp
DD209926A5 (en) STARTING ARRANGEMENT FOR ONE WITH A GLUEHBZW. ILLUMINATED LIGHT BULB
DE3636968A1 (en) Rechargeable lamp
DE19817309C2 (en) power strip
EP0626715B1 (en) Light source
EP0773601A2 (en) Pluggable security connection
WO1997014198A1 (en) Holder for an electric light source
DE4202120C2 (en) Electric cigar lighter, in particular for motor vehicles
DE3246404C2 (en)
DE19546797A1 (en) Arrangement for contacting, in particular for contacting gas discharge lamps
DE2947474A1 (en) Electric lamp bayonet base and holder - has two set length connecting pins and protected contacts in lamp base, esp. for corrosive conditions
DE102021112799A1 (en) Lamp socket with retaining clip for lamp
DE102009033454B3 (en) Lamp socket and lamp base for a gas discharge lamp
EP0418666A2 (en) Lamp for a fluorescent tube
DE2205926A1 (en) LAMP

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AT DE ES FR GB GR IT

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AT DE ES FR GB GR IT

17P Request for examination filed

Effective date: 19900606

17Q First examination report despatched

Effective date: 19930309

RAP3 Party data changed (applicant data changed or rights of an application transferred)

Owner name: BOSCH-SIEMENS HAUSGERAETE GMBH

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT DE ES FR GB GR IT

REF Corresponds to:

Ref document number: 109268

Country of ref document: AT

Date of ref document: 19940815

Kind code of ref document: T

REF Corresponds to:

Ref document number: 3850864

Country of ref document: DE

Date of ref document: 19940901

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 19940815

ET Fr: translation filed
REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2056884

Country of ref document: ES

Kind code of ref document: T3

ITF It: translation for a ep patent filed

Owner name: STUDIO JAUMANN

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: AT

Payment date: 19941117

Year of fee payment: 7

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GR

Payment date: 19941209

Year of fee payment: 7

REG Reference to a national code

Ref country code: GR

Ref legal event code: FG4A

Free format text: 3013552

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AT

Effective date: 19951213

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GR

Free format text: THE PATENT HAS BEEN ANNULLED BY A DECISION OF A NATIONAL AUTHORITY

Effective date: 19960630

REG Reference to a national code

Ref country code: GR

Ref legal event code: MM2A

Free format text: 3013552

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 19971212

Year of fee payment: 10

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: ES

Payment date: 19971219

Year of fee payment: 10

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19981213

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF EXPIRATION OF PROTECTION

Effective date: 19981214

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 19981213

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 19991116

Year of fee payment: 12

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20010201

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20010831

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20020116

Year of fee payment: 14

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20030701

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.

Effective date: 20051213