EP1955415B1 - Apparatus for holding and making electrical contact with a luminaire in a headlight - Google Patents

Abstract

In order to hold and make electrical contact with a luminaire (4) which contains a glass vessel (41), a luminaire cap (42) and contact pins (43, 44) for supplying electricity, in a headlight, which contains a luminaire socket (7) for holding the luminaire cap (42) with plug sockets (81, 82) for holding the contact pins (43, 44) of the luminaire (4), a mechanical or optical device (9) is provided for monitoring the connection of the luminaire cap (42) to the luminaire socket (7), and detects and indicates the relative position of at least a part of the luminaire cap (42) with respect to the luminaire socket (7) during insertion of the luminaire cap (42) into the luminaire socket (7).

Description

The invention relates to a device for receiving and electrically contacting a luminous means in a headlamp according to the preamble of claim 1.

From the DE 198 16 364 C2 is a headlamp for film, studio, stage lighting and other applications known, which has a headlamp housing, which serves to receive a luminous body, a transparent cover in the form of a protective screen or a lens disc and a reflector. As lamps or luminous bodies are burners or lamps, preferably single-ended discharge lamps, in a vertical or horizontal mounting position, that is, in each case perpendicular to the optical axis, or in the axial installation position, that is, in the optical axis used.

The lamps have a gas-filled glass body with electrodes arranged therein, a lamp cap through which the supply lines are led to the electrodes, and two or more contact pins which are arranged on the end of the lamp cap opposite the glass body. The contact pins are inserted for connection to a voltage source in the sockets of a lamp socket connected to the lamp housing, with a close fit between the sockets and the contact pins for the high current levels of the lamp current to be transmitted is necessary.

At the same time, the contact pins serve, for example, discharge lamps which are socketed on one side as fastening means for the discharge lamp. As with increasing lamp power and the size of the discharge lamps and in particular the length of the glass body and the lamp base increases, the lamps at larger lamp power on such a size that especially in a horizontal mounting position of the discharge lamps considerable forces acting on the addition to the power supply as mounting contacts Contact pins are exercised. These forces lead to a deterioration of the contact between the pins and the sockets of the lamp socket, resulting in an increased contact resistance in the transmission of the lamp current, a displacement of the lamp from the focus of the reflector and thereby a reduced light output and with a transfer of forces in the lamp interior is connected, which can lead to inadmissible voltages and eventually to failure of the lamp. However, the disadvantages of the exclusive storage of the lamp via the contact pins affect not only the static range on the size of the lamp, but especially in the dynamic range when transporting a headlamp or its operation with jerky pivoting movements, shocks on the lamp housing and the like.

In order to use a lamp housing for lamps with different Lampenensockeldurchmessem without replacement of a recording device and to use the pins of the lamps exclusively for the transmission of the lamp current can, in which consists of the DE 198 16 364 C2 known lamp housing, the receiving device of clamping jaws which engage around the lamp base and by means of the adjusting device in an open position in which the lamp cap is released, and in a locking position in which the lamp cap is fixed, are adjustable. The adjusting device consists of a pawl with two geometrically identically shaped inclined surfaces which rest on the upper and lower clamping jaw in such a way that when an adjustment of the pawl, the clamping jaws are radially spread.

When you press the adjustment for opening and closing of the jaws takes place at the same time opening and closing the pins of the lamp receiving receptacles, so easily removed by releasing the light socket by simultaneously releasing the pins on actuation of the adjustment for opening and closing the jaws or in the open position of the lamp holder, a light bulb can be used.

In the case of headlamps with single-cap lamps, the bulbs are inserted through the reflector from the front of the headlamp when the front cover is open and clamped in the bulb socket behind it. Only when the bulb centric and straight at the end stop of the bulb holder rests on the clamping device may be operated, otherwise damage to the bulb socket, the sockets or the bulb socket and the contact pins caused by breakage, flashovers or corrosion.

With increasing performance and thus size of the bulbs but problems occur in the correct insertion of the bulbs in the bulb holder of the headlight. On the one hand, the bulbs must be observed from the front when inserting into the bulb holder to the light, d. H. in mutually aligned contact pins of the bulb and the sockets of the bulb socket to use, while on the other hand, the operator must hold the bulb with one hand and center and operate with the other hand, the clamping device whose controls are usually located on the side of the headlight housing. However, the operator can no longer be sufficiently far in front of the headlight with larger headlight housings with a correspondingly large headlight housing in order to simultaneously observe the straight onset of the light source and to be able to operate the clamping device.

Another problem is that on the one hand a for the reflection of the light emitted by the light optically cheaper and therefore the smallest possible reflector opening is desired, but on the other hand, the visual inspection upon insertion of the light in the light bulb holder difficult because it obstructs the view on the bulb holder, in particular, when the light source is already partially inserted into the light-emitting means, so that the operator can no longer recognize whether the light source is correctly inserted or tilted and consequently contact the pins of the light source the sockets of the light emitting only insufficient.

A shift of the clamping device for non-positive and / or positive clamping of the bulb socket to the front of the headlight housing would not lead to any significant improvement in visual inspection when inserting the bulb in the bulb holder, since the visual inspection would be hindered anyway by a narrow reflector opening, so that only one enlarged reflector opening would be an improved visual inspection under taking into account a deteriorated beam reflection and poorer optical properties of the headlight would be possible.

To detect a correct fit of a lamp cap in a lamp socket, it is out of JP 09-185978 A known to provide a recess in the lamp base, at the bottom of a torsion spring is arranged, whose ends are bent upwards and engagement projections which engage in corresponding engagement recesses in the inner wall of the lamp socket. If the lamp base is inserted into the lamp socket, this leads to the rotation of the torsion spring and upon engagement of the engagement projections in the engagement recesses, an acoustic signal is generated.

From the JP 2000-340316 A a device is known for detecting an insufficient connection of a lamp cap of a discharge lamp with a lamp holder, which consists of a connecting cable and a mounting bracket, which can be connected to the lamp socket only when the lamp cap is fully connected to the lamp socket.

From the DE 296 23 442 U1 is a lighting device with a single-capped spotlight is known in which a connection of the radiator is excluded with a socket when the spotlight is unsuitable. For this purpose, the socket for receiving the radiator is connected to a sensor element which receives magnetic or optical pulses, while the socket facing part of the base is provided with a marking element which emits magnetic or optical pulses which are received by the sensor element after the marker has been stimulated to deliver the pulses by an excitation means.

From the GB 2072958 A a discharge lamp is known, the base of which is connected to a socket containing a device for generating a high voltage from an AC voltage. The socket has a recess at the end of which a high voltage contact is arranged, which is connected to a protruding from the base of the discharge lamp pin. Furthermore, in the recess of the socket contacts for preheating the cathode as well as with a circumferential lead collar of the lamp cap corresponding contacts are provided with which a signal applied to the contacts of the socket signal is shorted. With the short circuit of the contacts, the correct seating of the lamp cap is signaled in the high voltage releasing socket.

These known devices for detecting the correct fit of a lamp socket in a lamp socket or to block the insertion of an inappropriate lamp in a lamp socket are very complex and require appropriate facilities on both the lamp base and the lamp socket, so that they are only functional, if the lamp base of the lamp is provided with the corresponding detection means. The elaborate design of the detection devices also leads to increased susceptibility to interference, which leads to erroneous detection, especially taking into account the high temperatures in the area of the lamp cap and the lamp socket.

From the EP 0 586 308 A1 For example, there is known an electrical control display which indicates the mutual locking of a lamp cap with a bayonet connector. The lamp cap has a pair of radially directed and diametrically opposed pins which engage in grooves of L-shaped profile of the sheath of the connector. The bayonet connection is made by inserting the pins in the grooves by axial displacement and subsequent rotation of the lamp cap. When the pins reach the end of the L-shaped profile of the grooves as the lamp base rotates, a movable tongue is pressed against a fixed tongue of a pair of taps on the electrical indicator, closing a circuit and actuating a control circuit for powering the lamp.

With insufficient locking of the lamp, the pins of the lamp cap are not penetrated far enough to the bottom of the L-shaped grooves, so that the movable tongue does not come to rest on the fixed tongue. Thus, the tongues form a contact pair of a switch whose open or closed state controls the control circuit for the power supply of the lamp, so that an unwanted power supply is prevented when removed or improperly inserted lamp.

Also in this electrical control display, there is no control over the movement upon insertion of the lamp cap into the connector, but only a check of the achievement of the locked end position of the bayonet connection between the lamp cap and the connector.

Object of the present invention is to provide a monitoring device for a device for connection and electrical contacting of a lamp socket of a lamp and a bulb holder of a headlamp, the simple installation, easy and safe handling and insensitivity to external influences and disturbances correct insertion of the lamp socket ensured in the bulb holder even with large headlight performance and in poor visibility conditions.

This object is achieved by the features of claims 1 and 10 with optical and mechanical means.

The solution of the invention ensures a simple design, simple and safe handling and insensitivity to external influences and disturbances correct insertion of the lamp socket in the bulb socket, even with large headlights and under poor visibility conditions.

Due to the continuous detection of the positioning of a light bulb socket, which is used in a bulb holder, the correct alignment and connection between the bulb socket and the bulb holder can be checked before reaching the end stop or end seat of the bulb socket in the bulb holder and corrected if necessary. Since the monitoring device is activated and actuated with the onset of the luminous means socket, it can be made very insensitive to external influences, which is of particular importance because of the high temperatures in the region of the luminous means socket and the luminous means holder for trouble-free operation. In addition, the monitoring device according to the invention provides the prerequisite for different embodiments of the monitoring device, each with matching operating principle.

The solution according to the invention is based on the consideration that the integration of a monitoring device in a headlight makes no visual inspection of the light emitting front side of the headlamp required, so that an operator no minimum distance from the front of the headlamp housing when correctly inserting the light source in the bulb socket of Headlamps must comply, but on the insertion of the bulb in the bulb holder and Operate the clamping device can concentrate. The monitoring device signals the correct connection between the lamp socket and the lamp holder and thus optimum electrical contact of the pins with the sockets.

The monitoring device according to the invention makes it possible, while maintaining the functional principle, to detect the relative position of at least one part of the luminous means base with respect to the luminous means holder when inserting the luminous means base into the luminous means holder, several embodiments with different basic physical function.

A first embodiment consists of an optical position detection device with two oppositely disposed, on the side walls of the headlamp housing and / or a light source housing in the region of the bulb socket inspection openings, which are aligned with opposite openings or recesses of the bulb socket.

This first embodiment allows a transillumination of the bulb holder via two opposing openings in the bulb holder and the headlight housing, so that also allows lateral observation of the bulb socket and thus finding a correct connection of the bulb socket with the bulb holder without the need for optical visual inspection of the front of the headlight is, wherein the required recesses or openings can be kept smaller than in the aforementioned embodiment.

A variant of an optical position detection device is characterized by at least one light guide, which is connected to one of two opposing openings in the light-emitting and a control element, so that fed through an opening light in the space to be observed and via the optical fiber in the zu Observing room coupled light is guided to the control element or is interrupted for example completely inserted into the light bulb socket bulb socket, the light supply to the control element. Furthermore, the opening opposite the one optical waveguide can also be connected to a light guide that leads to the contact area, so that the light is also supplied to the room to be observed via an optical waveguide.

Preferably, the two openings lying opposite one another are arranged in the luminous means holder in the contact region of the end face of the luminous means base with the luminous means holder.

In this variant of an optical position detection device, the optical visual control of the operator is replaced by a simple visual display, in which the optical display darkens when correctly inserted up to the stop of the light bulb socket, thereby signaling the operator the correct fit of the bulb socket. Optionally, the visual display may be replaced or supplemented by an electrical signal device using or adding an opto-acoustic transducer. In this variant of an optical position detection device, however, additional optical and electronic components are required.

By connecting the light entering the contact area opening or recess or the light supplying the contact area light guide with a light coupling opening or optics at a convenient location on the outside of the headlight housing, the required light for lighting the connection area between the light bulb socket and bulb holder can be coupled.

Alternatively, the light to the contact area supplying opening or recess or the light-supplying light guide can be connected to an auxiliary lamp for illumination or fluoroscopy of the space to be observed in the bulb holder, so that is coupled with the auxiliary lamp light in the light guide, the relevant area of the Bulb holder even without external light, ie illuminated even in complete darkness and thus ensures a visual or audible verification of the correct fit of the bulb socket.

Alternatively, the control element may consist of an inspection opening or viewing optics arranged on the headlight housing or of one with the headlight housing connected opto-electronic converter and an optical and / or acoustic signal means exist and the light guides may be formed as a glass or glass ceramic light guide.

Instead of an optical position detection device, a mechanical position detection device can be provided with a mechanical sensor inserted into the light-emitting means holder and connected to a display device.

This design allows by simple mechanical means a display for checking the correct fit of a bulb in a bulb socket, without it being necessary for the operator to stand in front of the headlight when inserting the bulb. At the same time, the mechanical position detection device, in particular in conjunction with a mechanical display device, ensures the correct seating of the luminous means in the luminous means holder even during the worst viewing conditions during the insertion of the luminous means socket into the luminous means holder, wherein the sensor consists of one protruding into the luminous means holder and on insertion of the illuminant base slidable and connected to an indicator lever stylus is.

In this embodiment, the correct fit of the light source in the light-emitting socket is not only visually checked by a visual inspection, but can be done by solely scanning the position of the indicator lever already during insertion of the lamp socket in the bulb socket, so that the verification of the correct fit even at Darkness or under very poor visibility conditions. At the same time, this embodiment is characterized by its simple mechanism with high reliability.

Preferably, the stylus is guided to the insertion opening of the bulb holder opposite end of the bulb holder and is applied to a first lever arm of the rotatably mounted and spring-loaded indicator lever, the second lever arm is guided through an opening of the bulb holder receiving socket carrier and / or light source.

The second, serving as a pointer lever arm is preferably longer than the first, the stylus contacting lever arm, whereby a greater deflection of the serving as a pointer first lever arm is guaranteed to improve the accuracy of the display.

To display the correct seating of the luminous means base in the luminous means holder, in a first embodiment the second lever arm of the indicator lever can be arranged in a shaped part of the holder or of the illuminant housing which has a marking correlating with the displacement of the stylus when the illuminant base is inserted into the illuminant holder. In this embodiment, the marking may consist of an end stop of a recess receiving the second lever arm of the indicator lever.

Alternatively, the marking may consist of a matching with the contour of the end of the indicator lever nose, which is aligned with the direction of the deflection of the indicator lever with fully inserted into the bulb socket bulb socket.

To ensure that the bulb socket comes into contact with the stylus, the projecting into the insertion of the bulb holder end of the stylus is designed such that it abuts when inserting the bulb socket in the bulb holder to a portion of the bulb socket, the surface of the insertion into the the bulb holder projecting end of the stylus is greater than the diameter of the stylus.

In a specific embodiment, the stylus has a hook-shaped or mushroom-shaped projection projecting into the insertion opening of the luminous element holder, which can be displaced into a recess of the luminous element holder when the luminous means socket is inserted into the luminous means holder, and consists of ceramic, glass ceramic or glass.

In a further alternative embodiment, the stylus consists of a free-floating in the lamp housing and / or the bulb holder and guided in at least one recess of the lamp housing and / or the Leuchtmittelfassung ceramic lever connected to an outside of the lamp housing and / or the bulb socket indicator lever is.

This particularly simple embodiment is resistant to high temperatures and ensures a correct function even under extreme external conditions, since due to the free-floating mounting of the ceramic lever no tilting occurs, so that the ceramic lever is adjusted when inserting the light source through the bulb socket and the outstanding from the bulb holder, with Indicator lever connected to the ceramic lever indicates the respective relative position of the lamp socket with respect to the bulb socket without visual contact.

These features of a mechanical position detection device ensure, on the one hand, that the insulating effect of the illuminant holder is maintained and the necessary creepage and clearance distances are not impaired, since the part of the mechanism of the mechanical position detecting device lying in the danger zone consists of a high-temperature insulator and, on the other hand, a large indicator lever can be used by the correct fit of the bulb socket in the bulb holder extremely accurately displayed and, if necessary, can also be coupled with additional signaling devices that indicate the correct fit reliable and reproducible.

Fig. 1

einen Schnitt durch einen Scheinwerfer für Film-, Studio-, Bühnen- und Eventbeleuchtung;

Fig. 2

eine schematisch-perspektivische Darstellung einer Aufnahmevorrichtung für ein Leuchtmittel mit einer den Leuchtmittelsockel stützenden Klemmvorrichtung und Steckbuchsen zur Aufnahme der Kontaktstifte des Leuchtmittels;

Fig. 3 und 4

eine schematisch-perspektivische Darstellung einer optischen Positionserfassungseinrichtung mit einer Inspektionsöffnung in der Leuchtmittelfassung vor und nach dem Einsetzen eines Leuchtmittels in die Leuchtmittelfassung;

Fig. 5 und 6

eine schematisch-perspektivische Darstellung einer optischen Positionserfassungseinrichtung mit einer durchbrochenen Leuchtmittelfassung zur Durchleuchtung vor und nach dem Einsetzen eines Leuchtmittels in die Leuchtmittelfassung;

Fig. 7 und 8

eine schematisch-perspektivische Darstellung einer optischen Positionserfassungseinrichtung mit in Öffnungen der Leuchtmittelfassung eingeklebten Lichtleitern vor und nach dem Einsetzen eines Leuchtmittels in eine Leuchtmittelfassung;

Fig. 9

eine schematisch-perspektivische Darstellung einer ersten Variante einer mechanischen Positionserkennungseinrichtung mit in eine Leuchtmittelfassung eingesetztem Leuchtmittel;

Fig. 10

einen Schnitt durch das Leuchtmittelgehäuse und die Leuchtmittelfassung gemäß Fig. 9;

Fig. 11

eine schematisch-perspektivische Darstellung einer Leuchtmittelfassung mit frei schwimmend gelagertem, als Keramikhebel ausgebildetem Taststift;

Fig. 12

eine schematisch-perspektivische Seitenansicht der Stellung eines Keramikhebels beim Einsetzen der Kontaktstifte eines Leuchtmittelsockels in die Steckbuchsen einer Leuchtmittelfassung und

Fig. 13

eine teilweise geschnittene Seitenansicht bei der Positionierung des Leuchtmittelsockels in der Leuchtmittelfassung gemäß Fig. 12.

Based on embodiments shown in the drawing, the features of the invention and the advantages of the device according to the invention are shown and explained in more detail. Show it:

Fig. 1

a section through a spotlight for film, studio, stage and event lighting;

Fig. 2

a schematic-perspective view of a receiving device for a light source with a lamp base supporting the clamping device and sockets for receiving the contact pins of the lamp;

3 and 4

a schematic-perspective view of an optical position detection device with an inspection opening in the light-emitting means before and after the insertion of a light source in the light-emitting means;

FIGS. 5 and 6

a schematic-perspective view of an optical position detection device with a broken-through bulb holder for fluoroscopy before and after the insertion of a light source in the bulb holder;

FIGS. 7 and 8

a schematic-perspective view of an optical position detection device with glued into openings of the light emitting device light guides before and after the insertion of a light source in a light emitting device;

Fig. 9

a schematic-perspective view of a first variant of a mechanical position detection device with inserted into a light-emitting bulb means;

Fig. 10

a section through the bulb housing and the bulb holder according to Fig. 9 ;

Fig. 11

a schematic-perspective view of a bulb socket with freely floating stored, designed as a ceramic lever stylus;

Fig. 12

a schematic-perspective side view of the position of a ceramic lever when inserting the contact pins of a lamp socket in the sockets of a bulb socket and

Fig. 13

a partially sectioned side view in the positioning of the bulb socket in the bulb holder according to Fig. 12 ,

Fig. 1 shows a longitudinal section through a headlamp housing 1 of a headlamp for film, studio, stage and event lighting with a light-emitting front of the headlight housing 1 final cover 2 in the form of a glass or lens disc and retaining jaws for receiving attachment elements such as diffusers, filter discs, Protective disks and the like. In the headlight housing 1, a light source housing 5 for receiving a light source 4 in the form of a lamp or a burner and a reflector 3 is arranged, which the of the light source 4 reflected light in the direction of the front cover 2 and has an opening 30 through which the lamp 4 is inserted.

The lamp housing 5 contains a lamp holder 7 with sockets for power supply, in which the contact pins of the lamp 4 are used, which has an elongated gas-filled glass body 41 and a lamp socket 42 with the contact pins.

Fig. 2 shows in a schematic-perspective view of a connected via a spring-loaded bearing with the bulb housing holder support 50, which receives the bulb holder 7 with the sockets 81, 82 for power supply, in which the contact pins of the lamp, in particular a single-ended discharge lamp 4 as in Fig. 1 , are used.

To reduce or eliminate the force acting on the pins due to the length of the glass body 41 and its weight and the weight of the bulb socket 42 on the pins of the bulb forces that are transmitted to the bulb interior and there lead to excessive voltages and failure of the bulb and the electrical contact between the contact pins and the sockets 81, 82 of the lamp holder 7 may affect, and for improved support and clamping of the lamp 4 is a clamping device 6 with two jaws 61, 62 are provided which comprise the lamp socket axially spaced apart and force and / or positively clamp. The upper clamping jaw 61 and the lower clamping jaw 62 are each connected to two lever arms, which are connected to one another at their clamping jaws 61, 62 opposite ends via transverse webs and abut flatly on the light emitting socket 7. Parallel to the transverse webs connecting rods between the lever arms of the upper and lower clamping jaw 61, 62 are provided, which are connected via resilient supports with the holder carrier 5.

Due to the resilient mounting of the lever arms and thus of the clamping jaws 61, 62, the receiving device is moved in the same plane in an example caused by shock movement of the bulb 4, so that the pins remain free of tension. By a likewise elastic support of the lamp holder 7 via a spring bearing relative to the holder carrier 5 is ensured that no forces are transmitted to the contact pins of the illuminant 4, so that the contact pins serve for the exclusive transmission of electrical power.

For adjusting the clamping jaws 61, 62 from an open position, in which the bulb socket 42 is released to remove the bulb 4, in a closing and / or locking position in which the clamping jaws 61, 62 clamp the bulb socket 42 and fix the bulb 4 in its position , An adjusting device 63 is used with an adjusting member acting on the lever arms and an actuating member for the manual actuation of the adjusting device 63.

To insert or replace a bulb, the jaws 61, 62 are opened by means of the adjusting 63 and the bulb 4 through the trapezoidal opening of the separate jaws 61, 62 from the front of the headlamp with its bulb socket 42 in the bulb holder 7 and thereby the pins of Illuminant 4 inserted into the sockets 81, 82 of the bulb holder 7. But only with just inserted into the bulb holder 7 bulb base 42 but on the one hand a centric arrangement of the bulb 4 in the bulb holder 7 between the jaws 61, 62 of the clamping device 6 and on the other hand, an optimal electrical contact between the pins of the bulb 4 and the sockets 81st , 82 of the bulb holder 7 to prevent damage caused by breakage, electrical flashovers or contact corrosion.

In order to ensure a correct fit of the luminous means 4 and thus an optimal alignment of the luminous means socket 42 to the illuminant holder 7, a monitoring device is provided according to the invention, which according to the schematic-perspective representations in the Fig. 3 to 8 as an optical position detection device and according to the Fig. 9 and 10 can be formed as a mechanical position detection device and in unspecified embodiment as inductive, capacitive or ohmic position detection device.

In the Fig. 3 to 8 three different variants of an optical position detection device are shown prior to the insertion of a light source 4 designed as a single-capped lamp and with the illuminant 4 inserted.

Fig. 3 shows a schematic perspective view of a light source 4 with a gas-filled glass body 41, a bulb socket 42 and two contact pins 43, 44, which are used for electrical contacting in sockets 81, 82 of a light emitting 7. For optical control of the correct fit of the luminous means 4 and thus of the luminous means socket 42 or the contact pins 43, 44 in the luminous means holder 7 and the sockets 81, 82 is an optical positioning device in the form of an inspection opening in a side wall of the lamp housing 5 and / or headlight housing 1 and a recess 9 provided in the light-emitting socket 7, via which a lateral observation of the connection between the bulb socket 42 and the bulb holder 7 is possible. In order to be able to sufficiently see the field of view that is to be checked, both the inspection opening in the headlight or light source housing or the recess 9 in the light source socket 7 must be sufficiently large.

Fig. 4 shows in inserted into the light-emitting means 7 bulb 4 directed to the connection between the bulb socket 42 and the insertion of the bulb holder 7 field of view, which is made possible by the recess 9, which is arranged at the front in the insertion direction of the light emitting means 4 in the light emitting 7 ,

Since this to ensure a sufficient field of view to control the connection of the bulb socket with the bulb capture sufficiently large inspection opening in the bulb or headlight housing problematic with respect scattered light, penetration of water spray, influencing the convection and the electrical insulation of the current-carrying parts of the bulb and the bulb holder is in the FIGS. 5 and 6 shown as an alternative, an optical positioning device in which instead of a larger inspection opening two opposing openings or recesses 10, 11 are provided in the lamp holder 7 and thus aligned in the light source housing 5.

Both recesses or openings 10, 11 are arranged in the side walls of the luminous means holder 7 or of the illuminant housing 5, so that a lateral viewing is sufficient when the illuminant 4 is inserted into the illuminant holder 7, in which case the recess arranged on the side opposite the observer or opening 10 or 11 of the light supply and the viewer facing recess or opening 11 or 10 serves as a control opening or control recess. Of the formed between the recesses or openings 10, 11 light path forms an optical positioning device in the manner of a light barrier, which is interrupted with correct insertion of the bulb 4 in the bulb holder 7 and thereby indicates the operator the correct fit of the bulb socket 42 in the bulb holder 7 and so that the operator already has a control option when the illuminant 4 is placed on the illuminant mount 7.

As in this embodiment, despite the opposite of the inspection opening 9 in the embodiment according to the 3 and 4 significantly reduced cross-section of the recesses or openings 10, 11 occur - albeit to a reduced extent - problems in terms of light shielding, influencing the convection cooling, limiting the protection against spray and jet water and electrical insulation problems.

These problems are in the in the FIGS. 7 and 8 illustrated embodiment of an optical positioning device eliminated, are glued in the light guide 12, 13 in openings 14, 15 of the bulb holder 7. The consisting of glass or glass ceramic light guides 12, 13 are guided to side walls of the headlight housing and serve on the one hand for light supply and on the other hand for positioning control by the coupled via the one light guide 12 and 13 in the light emitting 7 via the mutually aligned openings 14, 15th either interrupted when seated correctly or when the illuminant 4 is not inserted correctly in the illuminant mount 7, it strikes the opposite light guide 12 or 13.

The non-light-coupling optical fiber 12 or 13 is connected to an opening or optics in the headlight housing or with an opto-electrical converter and allows an immediate visual inspection by the operator or an acoustic and / or visual signaling with correct or incorrect Insertion of the illuminant 4 into the illuminant mount 7. When the illuminant 4 is correctly inserted into the illuminant mount 7, no light is coupled out via the light guide 12 or 13 which does not couple the light, so that the clamp 6 according to FIG Fig. 2 closed for mechanical protection of the bulb 4 and the headlight can be put into operation.

The in the FIGS. 7 and 8 before the onset of the light source 4 in the light-emitting means 7 and in the case of inserted into the light-emitting bulb holder 7 4 illustrated embodiment eliminates the problems in terms of light shielding, influencing the convection cooling, limiting the protection against spray and jet water and the electrical insulation, but requires additional component expenditure in terms of optical and electronic components.

In the Fig. 9 and 10 A first embodiment of a mechanical position detection device is shown, which enables a correct insertion of a light source into a light bulb socket of a headlight even under poor viewing conditions or in complete darkness compared to the optical position detection devices and can be realized with simple and inexpensive means.

The mechanical position detection device consists according to the schematic perspective view of Fig. 9 and the sectional view of Fig. 10 from a mechanical sensor in the form of a stylus 21, which is inserted into a longitudinal bore 70 of the lamp holder 7 and has a hook-shaped projection 211, which is arranged on the front in the insertion direction A of the bulb end of the bulb holder 7 and into the insertion opening to the chamber 71 for the inclusion of the electrical contacts of the sockets protrudes. The contact pin 21 has at its opposite end to a stop 212 which bears against a contact surface of a first lever arm 221 of an indicator lever 22 which is rotatably supported about a bearing 23 in a position detection housing 20. An outgoing from the bearing 23 second lever arm 222 of the indicator lever 22 protrudes through a cutout 51 of the lamp housing 5 and is supported on a spring 24 which is arranged in a recess of the housing 20.

When inserting a light source in the bulb holder 7 of the stylus 21 is displaced in the insertion direction A in a recess 72 in the chamber 71 of the bulb holder 7 and at the same time deflected the indicator lever 22 against the action of the spring 24 in the direction of the indicator lever 22 angekagenen arrow B. , With a correct fit of the bulb in the bulb holder 7, the indicator lever 22 abuts an end stop 52 of the recess 51 or comes into coincidence with an integrally formed on the bulb housing 5 marking and signals the operator with the correct fit of the bulb or the bulb socket in the bulb holder 7. The integrally formed on the lamp housing 5 marking 3 preferably consists of a matching with the contour of the end of the indicator lever 22 nose 53, with the direction of the deflection of the indicator lever 22 at fully into the bulb socket Inserted 7 bulb socket and thus light source is aligned so that both a deviation from and the achievement of the correct fit of the bulb in the bulb holder 7 can be felt without visual inspection.

In the in the Fig. 9 and 10 illustrated embodiment of a mechanical position detection device, the lamp holder consists of a ceramic material and in the insertion direction A longitudinally slidably mounted in the bore 70 stylus 21 for reasons of electrical insulation and high temperature resistance of ceramic, glass ceramic or glass. As a result, the insulating effect of the light-emitting means holder 7 and the necessary creepage distances and clearances are obtained, since the part of the mechanical position detection means located in the danger zone consists of a high-temperature insulator.

As a result of the leverage of the indicator lever 22, the first lever arm 221 is substantially shorter than the second lever arm 222, the longitudinal displacement of the stylus 21 with large translation leads to the display of an exact stop of the light source in the light emitting 7th

In a further embodiment, in the Fig. 9 and 10 shown mechanical position detection means are coupled to a mechanism which the closing of the clamping device 6 according to Fig. 2 or the power supply to the bulb holder 7 prevents as long as the bulb is not correctly inserted into the bulb holder 7.

The in the Fig. 11 to 13 illustrated second embodiment of a mechanical position detection device includes a cantilever mounted in the bulb holder ceramic lever 25 in particular square cross-section. The ceramic lever 25 protrudes through a rectangular slot formed as a recess 73 from the light emitting 7 and is laterally offset from a ridge 74 which corresponds to a recess 45 at the lower end of the bulb socket 42 and connected to a cable 16 for power supply sockets 81, 82 separates, which receive the contact pins 43, 44 at the lower end of the bulb socket 42. The projecting through the recess 73 from the bulb holder 7 end of the cantilevered ceramic lever 25 has a cylindrical end, which is suitably connected to an indicator lever which is guided to the outside of the light-emitting device not shown.

The solution according to the invention can additionally be connected to an electrical signal device with, for example, an inductive-electronic, capacitive-electronic or ohmic-electronic converter, which closes a monitoring path when the illuminant detection is correctly inserted into the illuminant detection and sends a signal for further evaluation to an optical or acoustic display or, for example to a device for blocking a non-positively and / or positively connectable with the bulb socket clamping device and / or means for interrupting the power supply to the sockets of the bulb socket emits at a poor fit of the bulb in the bulb socket.

LIST OF REFERENCE NUMBERS

1

headlamp housing

2

cover

3

reflector

4

Lamp

5

Lamp housing

6

clamping device

7

Lamp holder

9

recess

10, 11

Openings or recesses

12, 13

optical fiber

14, 15

openings

16

electric wire

20

Position detection housing

21

feeler

22

indicator lever

23

camp

24

feather

25

ceramic lever

30

reflector opening

41

Gas-filled glass body

42

Lamp Socket

43, 44

contact pins

45

recess

51

neckline

52

end stop

53

nose

61, 62

jaws

63

adjustment

70

longitudinal bore

71

chamber

72, 73

recess

74

web

81.82

sockets

211

hook-shaped projection

212

attack

221

First lever arm

222

Second lever arm

Claims (22)

1. An apparatus for accommodating and making electrical contact with a luminous means (4), which contains a glass vessel (41), a luminous means base (42) and contact pins (43, 44) for supplying power, in a spotlight which contains a luminous means holder (7) for accommodating the luminous means base (42) with plug-type sockets (81, 82) for accommodating the contact pins (43, 44) of the luminous means (4), which apparatus includes a device (10-15) for monitoring the connection of the luminous means base (42) with the luminous means holder (7), wherein the device for monitoring comprises a device for detecting the relative position (10-15) of at least one part of the luminous means base (42) relative to the luminous means holder (7) when the luminous means base (42) is inserted into the luminous means holder (7),
   characterized in
   that the device for detecting the relative position comprises an optical position detection device (10-15) with two mutually opposed inspection openings arranged on the side walls of the spotlight housing (1) and/or of a luminous means housing (5) in the region of the luminous means holder (7) and of mutually opposed openings or cutouts (10, 11; 14, 15) of the luminous means holder (7), which are aligned with the inspection openings.
2. The apparatus according to claim 1, characterized in that the optical position detection device includes at least one fiber-optic conductor (12, 13) which is connected to one of two mutually opposed openings (14, 15) in the luminous means holder (7) and to a display element.
3. The apparatus according to claim 2, characterized in that the opening (15) opposite the one fiber-optic conductor (13) is connected to a fiber-optic conductor (12) which supplies light to the contact region.
4. The apparatus according to at least one of the preceding claims 1 to 3, characterized in that the two mutually opposed openings (14, 15) in the luminous means holder (7) are arranged in the contact region of the end face of the luminous means base (42) with the luminous means holder (7).
5. The apparatus according to claim 4, characterized in that the display element comprises a viewing opening or viewing optical element arranged on the spotlight housing (1).
6. The apparatus according to claim 4, characterized in that the display element comprises an optoelectronic transducer connected to the spotlight housing (1) and an optical and/or acoustic signal device.
7. The apparatus according to at least one of the preceding claims, characterized in that the opening or cutout (10, 14) supplying light to the contact region or the fiber-optic conductor (12) supplying light to the contact region is connected to a light-injecting opening or optical element in the spotlight housing (1).
8. The apparatus according to at least one of the preceding claims, characterized in that the light-injecting opening or cutout (10, 14) or the light-supplying fiber-optic conductor (12) is connected to an auxiliary lamp for illuminating or transilluminating the relevant part of the luminous means holder (7).
9. The apparatus according to at least one of the preceding claims 2 to 8, characterized in that the fiber-optic conductor(s) (12, 13) comprise(s) glass or glass-ceramic fiber-optic conductors.
10. An apparatus for accommodating and making electrical contact with a luminous means (4), which contains a glass vessel (41), a luminous means base (42) and contact pins (43, 44) for supplying power, in a spotlight which contains a luminous means holder (7) for accommodating the luminous means base (42) with plug-type sockets (81, 82) for accommodating the contact pins (43, 44) of the luminous means (4), which apparatus includes a device (20-24) for monitoring the connection of the luminous means base (42) to the luminous means holder (7), wherein the device for monitoring comprises a mechanical position detection device (20-24) with a mechanical sensor inserted into the luminous means holder (7), which detects the relative position (20-24) of at least a part of the luminous means base (42) relative to the luminous means holder (7) when the luminous means base (42) is inserted into the luminous means holder (7), and a feeler (21) which protrudes into the luminous means holder (7) and can be displaced when the luminous means base (42) is inserted, and which is connected to an indicator lever (22),
    characterized in
    that the indicator lever (22) is arranged outside the luminous means holder (7) and is guided through a cutout (51) of the luminous means housing (5) to a marking (52, 53).
11. The apparatus according to claim 10, characterized in that the indicator lever (22) is rotatably mounted and spring-loaded.
12. The apparatus according to claim 10 or 11, characterized in that the feeler (21) is guided to the end of the luminous means holder (7) opposite the insertion opening of the luminous means holder (7) and rests against a first lever arm (221) of the indicator lever (22), whose second lever arm (222) is arranged in a molded part of the holder mount (50) or the luminous means housing (5), which has the marking (52, 53) correlating with the displacement of the feeler (21) when the luminous means base (42) is inserted.
13. The apparatus according to claim 12, characterized in that the second lever arm (222) is longer than the first lever arm (221).
14. The apparatus according to claim 12, characterized in that the marking comprises an end stop (52) of a cutout (72) which accommodates the second lever arm (222) of the indicator lever (22).
15. The apparatus according to claim 12, characterized in that the marking comprises a tab (53) corresponding to the contour of the end of the indicator lever (22), which is aligned with the direction of the deflection of the indicator lever (22) when the luminous means base (42) is completely inserted into the luminous means holder (7).
16. The apparatus according to at least one of the preceding claims 10 to 15, characterized in that the end of the feeler (21) protruding into the insertion opening of the luminous means holder (7) is formed such that it stops against a part of the luminous means holder (7) when the luminous means base (42) is inserted into the luminous means holder (7).
17. The apparatus according to claim 16, characterized in that the area of the end of the feeler (21) protruding into the insertion opening of the luminous means holder (7) is greater than the diameter of the feeler (21).
18. The apparatus according to claim 15 or 16, characterized in that the feeler (21) has a hook-shaped or mushroom-shaped projection (211) protruding into the insertion opening of the luminous means holder (7), which can be displaced into a cutout (72) of the luminous means holder (7) when the luminous means base (42) is inserted into the luminous means holder (7).
19. The apparatus according to claim 10, characterized in that the feeler comprises a ceramic lever (25), which is mounted in freely floating fashion in the luminous means housing (5) and/or the luminous means holder (7) and is guided in at least one cutout (73) of the luminous means housing (5) and/or the luminous means holder (7).
20. The apparatus according to claim 19, characterized in that the ceramic lever (25) is connected to an indicator lever arranged outside the luminous means housing (5) and/or the luminous means holder (7).
21. The apparatus according to at least one of the preceding claims 10 to 20, characterized in that the feeler (21) is made of ceramic, glass ceramic or glass.
22. The apparatus according to at least one of the preceding claims, characterized in that the luminous means holder (7) is made of ceramic, glass ceramic or glass.

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