EP0320875A2 - Dispositif d'éclairage pour appareils domestiques tels que fours - Google Patents
Dispositif d'éclairage pour appareils domestiques tels que fours Download PDFInfo
- Publication number
- EP0320875A2 EP0320875A2 EP19880120801 EP88120801A EP0320875A2 EP 0320875 A2 EP0320875 A2 EP 0320875A2 EP 19880120801 EP19880120801 EP 19880120801 EP 88120801 A EP88120801 A EP 88120801A EP 0320875 A2 EP0320875 A2 EP 0320875A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- lamp
- insulating material
- lighting device
- protective
- contact
- 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.)
- Granted
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
Definitions
- 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 can be inserted with its contact pins emanating from this lamp base and can be 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.
- Such lighting devices can be independent electrical lights, which are arranged in the household appliances, or they are an integral part of household appliances.
- touchable metallic parts that are connected to a protective conductor must be separated from live parts at an operating 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.
- overvoltages can also occur in domestic appliances, safety distances from live parts that can be touched in the case of touchable glass bulbs of lamps must be observed, to the extent that, in the worst case, the test point of 2750 V is present on the live parts on this glass bulb not harmful.
- clearances of at least 8.0 mm and creepage distances of at least 8.0 mm leading over the insulating material must be realized.
- 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 lamp.
- the present invention has for its object to design electrical lighting devices in such a way that both 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.
- these measures should be usable in connection with small installation dimensions and compact construction, as are usually followed in lighting devices with plug-in sockets, that is to say in particular for so-called low-voltage lamps, for example halogen lamps.
- An electrical lighting device which meets these requirements to an outstanding degree is characterized according to the invention in that the leakage currents, which consist 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-grounded protective element reaching into the vicinity of the lamp glass bulb or its lamp base, which is made of insulating material, and that the distance between this protective element and the contact parts of the lamp holder is in the plug-in direction of the lamp a required security amount is greater than the length of the contact pins of the lamp.
- 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, particularly when they are replaced. In spite of the insulation measures, arcing and leakage currents are certainly made harmless by the measures taken for the operator.
- the electrical lighting device is characterized in that the electrically conductive and protective-earthed 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.
- the circuit-board-like, electrically conductive and protective-grounded protective element can either be tubular or surround the lamp socket made of insulating material, or it can be arranged on struts which lead past the lamp socket made of insulating material.
- this electrically conductive protective element is electrically conductively connected to protective-earthed housing parts.
- the electrical lighting device according to the invention is characterized in that the electrically conductive, protective-earthed 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.
- the lighting device according to the invention is shown in each case as an independent lamp, specifically on a greatly enlarged scale.
- 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.
- 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.
- the contact pins 6 are pre-centered with respect to the contact parts 7. From these plug-in openings 9, the lamp holder 2 has an integrally formed, tubular extension 10 of larger diameter, into which at least a large part of the lamp base 5 fits.
- 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.
- 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 in the upper region 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 socket 2 and can thus be grounded with the latter.
- the length e between the upper edge of the protective element 13 and the first possibility of contact 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.
- the tubular extension 10 of the lamp holder 2 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.
- the electrically conductive and protective-grounded 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.
- a protection element 17 designed like a circuit board is arranged for 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.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
- Electric Stoves And Ranges (AREA)
- Circuit Arrangement For Electric Light Sources In General (AREA)
- Connecting Device With Holders (AREA)
- Endoscopes (AREA)
- Electric Ovens (AREA)
- Details Of Connecting Devices For Male And Female Coupling (AREA)
- Radiation-Therapy Devices (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE3742509 | 1987-12-15 | ||
| DE19873742509 DE3742509A1 (de) | 1987-12-15 | 1987-12-15 | Elektrische beleuchtungseinrichtung fuer hausgeraete, wie backoefen |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP0320875A2 true EP0320875A2 (fr) | 1989-06-21 |
| EP0320875A3 EP0320875A3 (en) | 1990-05-16 |
| EP0320875B1 EP0320875B1 (fr) | 1994-07-27 |
Family
ID=6342665
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP88120801A Expired - Lifetime EP0320875B1 (fr) | 1987-12-15 | 1988-12-13 | Dispositif d'éclairage pour appareils domestiques tels que fours |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US4870546A (fr) |
| EP (1) | EP0320875B1 (fr) |
| AT (1) | ATE109268T1 (fr) |
| DE (2) | DE3742509A1 (fr) |
| ES (1) | ES2056884T3 (fr) |
| YU (1) | YU47175B (fr) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0543448A1 (fr) * | 1991-11-18 | 1993-05-26 | Koninklijke Philips Electronics N.V. | Lampe électrique à réflecteur |
| EP0683367A1 (fr) * | 1994-05-20 | 1995-11-22 | ELECTROLUX ZANUSSI ELETTRODOMESTICI S.p.A. | Fixation de support de lampe pour un appareil de refroidissement |
| EP4092837B1 (fr) * | 2021-05-18 | 2023-08-16 | BJB GmbH & Co. KG | Douille de lampe d'appareils de cuisson à liaison de contact non rivée |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE8903947U1 (de) * | 1989-03-31 | 1990-10-18 | Heraeus Instruments GmbH, 6450 Hanau | Berührungsschutz für Scheinwerfer |
| US5121304A (en) * | 1990-10-15 | 1992-06-09 | Gte Products Corporation | Vehicle lamp |
| 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 (de) | 2015-08-27 | 2017-06-22 | Bjb Gmbh & Co. Kg | Backofenleuchte |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE406613C (de) * | 1921-06-04 | 1924-11-29 | Heinrich Gothe | Aufklappbare Gluehlampenarmatur, deren einer Pol geerdet ist, mit im Gehaeuse fest angebrachtem federnden Kontakte und mit im Deckel sitzender Sicherung |
| GB524025A (en) * | 1939-01-19 | 1940-07-29 | Gen Electric Co Ltd | Improvements in and relating to electric lighting fittings |
| FR1324333A (fr) * | 1962-03-06 | 1963-04-19 | Dispositif de sécurité pour lampes, notamment pour lampes de projecteurs de véhicules automobiles | |
| NL6816006A (fr) * | 1968-11-09 | 1970-05-12 | ||
| FR2421485A1 (fr) * | 1978-03-31 | 1979-10-26 | Barthelemy Louis | Prise de courant de securite |
| US4222623A (en) * | 1978-07-26 | 1980-09-16 | Tore Hultberg | Glow-lamp holder |
| DE2921425C3 (de) * | 1979-05-26 | 1985-10-10 | Pistor + Boss GmbH, 5880 Lüdenscheid | Elektrische Leuchte für die Ausleuchtung von Backöfen |
| DE8131006U1 (de) * | 1981-10-23 | 1983-04-07 | Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH, 8000 München | Elektrische lampe |
| DE8710698U1 (de) * | 1987-08-05 | 1987-09-17 | Korsch, Alfred, 4154 Tönisvorst | Leuchte |
| DE8711524U1 (de) * | 1987-08-25 | 1987-10-08 | Bosch-Siemens Hausgeräte GmbH, 8000 München | Elektrische Leuchte für Hausgeräte |
-
1987
- 1987-12-15 DE DE19873742509 patent/DE3742509A1/de active Granted
-
1988
- 1988-12-13 DE DE3850864T patent/DE3850864D1/de not_active Expired - Fee Related
- 1988-12-13 AT AT88120801T patent/ATE109268T1/de not_active IP Right Cessation
- 1988-12-13 EP EP88120801A patent/EP0320875B1/fr not_active Expired - Lifetime
- 1988-12-13 ES ES88120801T patent/ES2056884T3/es not_active Expired - Lifetime
- 1988-12-14 YU YU226188A patent/YU47175B/sh unknown
- 1988-12-15 US US07/285,013 patent/US4870546A/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0543448A1 (fr) * | 1991-11-18 | 1993-05-26 | Koninklijke Philips Electronics N.V. | Lampe électrique à réflecteur |
| EP0683367A1 (fr) * | 1994-05-20 | 1995-11-22 | ELECTROLUX ZANUSSI ELETTRODOMESTICI S.p.A. | Fixation de support de lampe pour un appareil de refroidissement |
| EP4092837B1 (fr) * | 2021-05-18 | 2023-08-16 | BJB GmbH & Co. KG | Douille de lampe d'appareils de cuisson à liaison de contact non rivée |
| US11843207B2 (en) | 2021-05-18 | 2023-12-12 | Bjb Gmbh & Co. Kg | Lamp socket with non-riveted contact connection |
Also Published As
| Publication number | Publication date |
|---|---|
| ES2056884T3 (es) | 1994-10-16 |
| EP0320875B1 (fr) | 1994-07-27 |
| DE3850864D1 (de) | 1994-09-01 |
| DE3742509C2 (fr) | 1992-07-30 |
| EP0320875A3 (en) | 1990-05-16 |
| ATE109268T1 (de) | 1994-08-15 |
| US4870546A (en) | 1989-09-26 |
| DE3742509A1 (de) | 1989-06-29 |
| YU47175B (sh) | 1995-01-31 |
| YU226188A (en) | 1991-04-30 |
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