EP1331436B1 - Flashlight - Google Patents

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Publication number
EP1331436B1
EP1331436B1 EP03001721A EP03001721A EP1331436B1 EP 1331436 B1 EP1331436 B1 EP 1331436B1 EP 03001721 A EP03001721 A EP 03001721A EP 03001721 A EP03001721 A EP 03001721A EP 1331436 B1 EP1331436 B1 EP 1331436B1
Authority
EP
European Patent Office
Prior art keywords
torch
lamp head
torch according
shank member
lenses
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
EP03001721A
Other languages
German (de)
French (fr)
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EP1331436A2 (en
EP1331436A3 (en
Inventor
Waldemar Witte
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.)
Witte und Sutor GmbH
Original Assignee
Witte und Sutor GmbH
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Filing date
Publication date
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Publication of EP1331436A2 publication Critical patent/EP1331436A2/en
Publication of EP1331436A3 publication Critical patent/EP1331436A3/en
Application granted granted Critical
Publication of EP1331436B1 publication Critical patent/EP1331436B1/en
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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21LLIGHTING DEVICES OR SYSTEMS THEREOF, BEING PORTABLE OR SPECIALLY ADAPTED FOR TRANSPORTATION
    • F21L4/00Electric lighting devices with self-contained electric batteries or cells
    • F21L4/08Electric lighting devices with self-contained electric batteries or cells characterised by means for in situ recharging of the batteries or cells
    • F21L4/085Pocket lamps
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21LLIGHTING DEVICES OR SYSTEMS THEREOF, BEING PORTABLE OR SPECIALLY ADAPTED FOR TRANSPORTATION
    • F21L4/00Electric lighting devices with self-contained electric batteries or cells
    • F21L4/02Electric lighting devices with self-contained electric batteries or cells characterised by the provision of two or more light sources
    • F21L4/022Pocket lamps
    • F21L4/027Pocket lamps the light sources being a LED
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21VFUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V23/00Arrangement of electric circuit elements in or on lighting devices
    • F21V23/06Arrangement of electric circuit elements in or on lighting devices the elements being coupling devices, e.g. connectors
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21VFUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V5/00Refractors for light sources
    • F21V5/006Refractors for light sources applied to portable lighting devices
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21YINDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2115/00Light-generating elements of semiconductor light sources
    • F21Y2115/10Light-emitting diodes [LED]

Definitions

  • the invention relates to a flashlight with a at least one, preferably white, LED as lamp enclosing lamp head, which is connectable with at least one battery as power supply shank piece, wherein by means of the interposition of a connector, an electrical connection of the lamp is formed with the power supply and that connector at least substantially corresponds to a lamp socket, preferably a halogen lamp.
  • the invention is therefore an object of the invention to provide a flashlight, which offers the ability to retrofit as LED bulbs or, if necessary, conventional bulbs or the novel LED's to use and comparable light output, as existing models without LED technology to achieve.
  • a connecting piece is connected between the lamp and the power supply, which at least substantially corresponds to a lamp socket, an adapter element has been created for the first time, which allows a lamp head with integrated LED's in combination to use with a shaft piece, which was previously used in conjunction with conventional bulbs.
  • the batteries usually connected inextricably with such a shaft piece can therefore be used in future in conjunction with the new light source. Even if a completely new flashlight is purchased, the customer has the opportunity to continue to use any already existing shaft piece as a removable battery.
  • the lamp head is closed on the side facing away from the shaft piece side of a transparent cover preferably made of Plexiglas.
  • biconvex lenses are embedded in the transparent Plexisglasabdeckung.
  • the number of lenses preferably corresponds to the number of LEDs integrated in the lamp head.
  • a connecting piece is incorporated in the lamp head, which essentially comprises a coaxial annular electrode, the structure of which essentially corresponds to a conventional lamp socket.
  • This connector is connected via a printed circuit board, which has two electrically isolated areas with the one or more bulbs.
  • the advantage of such a flat circuit board is that the parallel connection of several bulbs is possible at the same time.
  • the white LEDs are mounted on a light source carrier. Ideally, the LEDs are encapsulated directly with this illuminant support platform, so that a robust lamp holder is given, which is far superior in their durability and insensitivity to conventional lamp holders.
  • the lenses are inclined towards each other in the sense of bundling, so that the beam axes of the lenses are bundled.
  • the inclination of the lenses is selected as a function of the distance of the lamps from the lenses or their focal plane.
  • a preferably multi-cell nickel-metal-hydride battery for powering the bulbs is integrated.
  • Such nickel-metal-hydride batteries have proved to be robust and durable in the preferred application of frequent recharge here.
  • a charging plug is provided on the side facing away from the lamp head end side of the shaft housing. By means of arranged on this page plug contact the batteries can be charged in a conventional household socket.
  • the charging plug can be closed with a cap.
  • the cap avoids damage to the plug contacts and also improves the handling of the flashlight.
  • the shaft housing of the flashlight has a substantially rectangular cross-section with rounded corners, which is transferred in the region of the lamp head steplessly in a square cross-section.
  • the square shape is particularly advantageous in conjunction with four white LEDs, which can be arranged in a space-saving concentric manner to an imaginary central axis of the flashlight in this way.
  • the flashlight head is detachably connected to the shaft housing via a Verrastungskontur.
  • flashlight 1 can be divided into three main sections. It is the lamp head 2, the adjoining shaft piece 3, which merges on the side remote from the lamp head 2 in a cap 4.
  • the cap 4 conceals an immediately adjacent to the shaft piece 3 charging plug 5, for charging a nickel-metal hydride battery not shown in the drawing for supplying power to a recorded in the lamp head 2 bulb.
  • the nickel-metal-hydride battery is a four-cell battery that supplies an operating voltage of 4.8V.
  • the cap 4 has to form a clamping fit on a not shown in the drawing inner ribbing, so that the cap 4 can be easily plugged onto the charging plug 5 and withdrawn again.
  • the shaft piece 3 and the closure cap 4 have a substantially rectangular cross-section with rounded corners.
  • a ribbing 7 is arranged on the outside, in order to provide an improved feel for the flashlight 1.
  • the outer ribbing 7 runs continuously over the cap 4 and the shaft piece. 3
  • the cross section of the flashlight 1 is converted in the region of the lamp head 2 into a substantially square cross section, so that the lamp head 2 is widened at least two sides with respect to the remaining shaft piece 3.
  • An enclosure 11 of the lamp head 2 is provided internally in the adjoining the shaft piece 3 area with a Verrastungskontur or with corresponding undercuts, which can be locked with locking knobs of the shaft piece 3 in an intended end position.
  • a slide switch 10 is provided for switching on and off of the arranged in the lamp head 2 bulbs.
  • a corresponding tapping of the slide switch can also be used to realize a flashing light in a manner known per se.
  • the switch 10 is locked in the respective on / off end positions.
  • the lamp head 2 is according to the not to scale sectional view and detail view in Fig. 2 essentially of a plastic enclosure 11, which encloses a transparent Plexiglas cover 12 on the end face remote from the shaft piece.
  • biconvex lenses 13 are embedded.
  • the biconvex lenses 13 are set at an angle with respect to the plane formed by the surface of the transparent Plexiglas cover 12 such that the beam of the lenses 13 unite in a central luminous spot.
  • the number of lenses 13 corresponds to the number of integrated in the lamp head bulbs.
  • LEDs 14 are arranged in the lamp head.
  • the LEDs 14 are mounted on a light source carrier 15. It is a circular Plexisglascase which is fixed by spacers 16 at a defined distance from the transparent cover 12.
  • the spacers 16 are made of Plexiglas, so that the transparent cover 12 together with the illuminant carrier 15 and the spacers 16 can be manufactured in one piece.
  • the LEDs 14 are preferably sealed with the illuminant carrier 15. This is a very robust and virtually nondestructive attachment of the LED's 14, which is far superior in their robustness to conventional lamp holders.
  • the illuminant carrier 15 carries four white LEDs 14, which on an imaginary circumferential circle are concentric with an imaginary axial central axis of the flashlight 1 on the illuminant carrier 15 are arranged.
  • the lenses 13 are each arranged in the beam path of the LEDs 14. It follows that the number of lenses 13 corresponds to the number of LEDs 14 used.
  • the distance of the illuminant carrier 15 or of the LEDs 14 from the lenses 13 is in a predetermined relationship to the angle of inclination of the lenses 13 or of their beam axis with respect to an imaginary surface plane of the transparent cover 12. In the present example, the lenses are at an angle of approx. 2 degrees relative to the surface plane of the transparent cover 12 employed or inclined towards each other.
  • Radially inside the lamp carrier encloses a likewise molded with the illuminant carrier connector 17, which consists essentially of a ring electrode assembly with a central pin electrode 20 and a coaxial annular electrode 21.
  • the connector 17 corresponds in its construction substantially a conventional lamp holder, such as a halogen lamp, as they are commonly used in flashlights 1. Due to this structure of the fitting 17, the lamp head 2 can be used with the LED's 14 in conjunction with a shaft piece 3 and its integrated battery, which has hitherto been used in conjunction with a conventional lamp socket.
  • the novel lamp head 2 with the integrated LED's 14 can therefore be retrofitted with existing shank pieces 3 or already existing shank pieces 3 are used as Konakku for the novel lamp head 2. This is particularly advantageous because the life of the white LEDs and their radiance is far superior to the previous halogen lamps.
  • Another advantage is the lower energy consumption of white LEDs compared to conventional halogen lamps.
  • the pin electrode 20 is connected to a terminal contact to the arranged in the shaft piece 3 power supply.
  • a ring electrode 21 of the connecting piece 17 forms the ground pole of the electrode arrangement.
  • Below the illuminant carrier 15 is held by a fixing piece 22, a printed circuit board 23 for parallel connection of the LEDs 14 is provided.
  • the printed circuit board 23 is a quadrangular printed circuit board having an inner bore, which is arranged at a distance from the connecting piece 17 below the illuminant carrier 15.
  • the printed circuit board 23 comprises two electrically isolated regions, one of which is electrically connected to the pin electrode 20 and one with the ring electrode 21.
  • the contacts of the LED's 14 are connected to the printed circuit board 23, wherein in each case one contact to voltage and one contact to ground.
  • the lamp head 2 described above due to the structure of the connector 17, as already mentioned, can be easily connected to a conventional shaft piece 3.
  • a flashlight 1 with a lamp head 2 for retrofitting existing shaft pieces 3 is described above, which has a lower energy requirement at a higher light output.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
  • Thermotherapy And Cooling Therapy Devices (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Fastening Of Light Sources Or Lamp Holders (AREA)
  • Led Device Packages (AREA)

Abstract

A pocket torch has white light halogen emitting diodes (14) which are surrounded by a detachable torch end (2) which is the extension of the torch main shaft (3). The LED and battery are linked electrically by an adapter.

Description

Die Erfindung betrifft eine Taschenlampe mit einem wenigstens eine, vorzugsweise weiße, LED als Leuchtmittel umschließenden Lampenkopf, der mit wenigstens einen Akku als Spannungsversorgung umschließenden Schaftstück verbindbar ist, wobei mittels der Zwischenschaltung eines Anschlußstücks eine elektrische Verbindung der Leuchtmittels mit der Spannungsversorgung ausgebildet wird und jenes Anschlußstück zumindest im Wesentlichen einer Lampenfassung, vorzugsweise einer Halogenlampe entspricht.The invention relates to a flashlight with a at least one, preferably white, LED as lamp enclosing lamp head, which is connectable with at least one battery as power supply shank piece, wherein by means of the interposition of a connector, an electrical connection of the lamp is formed with the power supply and that connector at least substantially corresponds to a lamp socket, preferably a halogen lamp.

Eine solche Taschenlampe ist aus der EP 1 136 746 A1 vorbekannt. Allerdings ist der Lampenkopf fest mit dem Schaftstück verbunden, so dass diese Lösung keinerlei Hinweis zur nachträglichen Ertüchtigung bestehender Taschenlampen mit der vorteilhaften LED-Technik bietet. Dies ist zwar weniger für den Endkunden aber für die Hersteller von Taschenlampen eine wichtige Anforderung.Such a flashlight is out of the EP 1 136 746 A1 previously known. However, the lamp head is firmly connected to the shaft piece, so that this solution provides no indication for retrofitting existing flashlights with the advantageous LED technology. This is less important for the end customer but for the manufacturers of flashlights an important requirement.

Hierzu ist aus der DE 34 30 540 A1 ein Leuchteinsatz mit einem Steckerstift bekannt. Durch die einfache Kontaktierung über den Steckerstift können bedarfsweise Leuchteinsätze für spezielle Anwendungen mit dem Lampenschaft mit integrierter Stromversorgung für den Leuchteinsatz verbunden werden.This is from the DE 34 30 540 A1 a light insert with a pin known. Due to the simple contact via the pin can, if necessary, light inserts for special applications with the lamp shaft with integrated power supply for the light insert to be connected.

Ferner ist es aus der US 6,190,020 B1 bekannt, wenigstens eine in einem geeigneten Lampenkopf aufgenommene LED über ein Zwischenstück elektrisch und mechanisch mit einem Schaftstück einer Taschenlampe zu verbinden.Furthermore, it is from the US 6,190,020 B1 It is known to electrically and mechanically connect at least one LED accommodated in a suitable lamp head via an intermediate piece to a shaft portion of a flashlight.

In jüngster Zeit ist es aufgrund der Entwicklung einer blauen LED in der Folge möglich geworden, auch weiße LED's auszubilden. Die Robustheit und der geringere Energiebedarf von weißen LED's gegenüber herkömmlichen Glühlampen oder Halogenleuchten haben zu einen verstärkten Einsatz von weißen oder blauen LED's in Taschenlampen geführt. Dabei weisen derartige LED's üblicherweise andere Außenabmessungen und Anschlußformate als die bisher üblichen Taschenlampenbirnen auf. Daraus ergibt sich die Notwendigkeit, daß zum Einsatz weißer LED's üblicherweise neue Gehäuse entwickelt werden müssen und kundenseitig ggf. eine neue Taschenlampe gekauft werden muß.Recently, due to the development of a blue LED, it has become possible to form white LEDs as well. The ruggedness and lower power consumption of white LEDs compared to conventional incandescent or halogen lamps has led to increased use of white or blue LEDs in flashlights. In this case, such LED's usually have other external dimensions and connection formats than the usual flashlight bulbs. As a result, there is a need for the use of white LEDs usually new housing must be developed and the customer, if necessary, a new flashlight must be purchased.

Ein weiteres bislang ungelöstes Problem bei der entsprechenden Nachrüstung von Taschenlampen besteht darin, dass zur Erreichung einer vergleichbaren Lichtleistung, wie die Vorgängerlampe, meist mehrere LED's benötigt werden. Das insoweit entstehende diffuse Licht muss dann ergänzend gebündelt werden.Another hitherto unsolved problem with the corresponding retrofitting of flashlights is that in order to achieve a comparable light output, as the predecessor lamp, usually several LEDs are needed. The resulting diffuse light must then be bundled in addition.

Der Erfindung liegt daher die Aufgabe zugrunde, eine Taschenlampe zu schaffen, die die Möglichkeit bietet, als Leuchtmittel LED's nachzurüsten bzw. bedarfsweise herkömmliche Leuchtmittel oder die neuartigen LED's einzusetzen und eine vergleichbare Lichtleistung, wie Bestandsmodelle ohne Led-Technik zu erreichen.The invention is therefore an object of the invention to provide a flashlight, which offers the ability to retrofit as LED bulbs or, if necessary, conventional bulbs or the novel LED's to use and comparable light output, as existing models without LED technology to achieve.

Die Lösung dieser Aufgabe gelingt durch eine Taschenlampe mit den Merkmalen des Anspruchs 1. Vorteilhafte Ausgestaltungen können den Unteransprüchen 2 bis 12 entnommen werden.The solution of this object is achieved by a flashlight with the features of claim 1. Advantageous embodiments, the dependent claims 2 to 12 are removed.

Dadurch, daß bei einer weißen LED mit den Merkmalen des Anspruchs 1 ein Anschlußstück zwischen das Leuchtmittel und die Stromversorgung geschaltet ist, das zumindest im Wesentlichen einer Lampenfassung entspricht, ist erstmals ein Adapterelement geschaffen worden, das es ermöglicht, einen Lampenkopf mit integrierten LED's in Verbindung mit einem Schaftstück zu benutzen, das bisher in Verbindung mit herkömmlichen Leuchtmitteln eingesetzt wurde. Die üblicherweise unlösbar mit einem derartigen Schaftstück verbundenen Akkus können daher künftig auch in Verbindung mit dem neuen Leuchtmittel genutzt werden. Selbst wenn eine vollständig neue Taschenlampe gekauft wird, hat der Kunde die Möglichkeit, ein etwaig bereits vorhandenes Schaftstück als Wechselakku weiter zu benutzen. Der Leuchtmittelkopf wird auf der von dem Schaftstück abgewandten Seite von einer transparenten Abdeckung vorzugsweise aus Plexiglas abgeschlossen. Ein derartiger Abschluß verhindert das Eindringen von Fremdstoffen in den Lampenkopf und trägt somit zu einer verbesserten Haltbarkeit der Lampe insbesondere unter schwierigen Umgebungsbedingungen bei. In vorteilhafter Weiterbildung sind in die transparente Plexisglasabdeckung bikonvexe Linsen eingelassen. Die Anzahl der Linsen entspricht dabei vorzugsweise, der Anzahl der in den Lampenkopf integrierten LED's.Characterized in that in a white LED with the features of claim 1, a connecting piece is connected between the lamp and the power supply, which at least substantially corresponds to a lamp socket, an adapter element has been created for the first time, which allows a lamp head with integrated LED's in combination to use with a shaft piece, which was previously used in conjunction with conventional bulbs. The batteries usually connected inextricably with such a shaft piece can therefore be used in future in conjunction with the new light source. Even if a completely new flashlight is purchased, the customer has the opportunity to continue to use any already existing shaft piece as a removable battery. The lamp head is closed on the side facing away from the shaft piece side of a transparent cover preferably made of Plexiglas. Such termination prevents the penetration of foreign substances into the lamp head and thus contributes to an improved durability of the lamp, especially under difficult environmental conditions. In an advantageous embodiment, biconvex lenses are embedded in the transparent Plexisglasabdeckung. The number of lenses preferably corresponds to the number of LEDs integrated in the lamp head.

In vorteilhafter Ausgestaltung ist hierzu im Lampenkopf ein Anschlußstück eingearbeitet, das im Wesentlichen eine koaxiale Ringelektrode umfasst, deren Aufbau im Wesentlichen einer herkömmlichen Lampenfassung entspricht.In an advantageous embodiment, for this purpose, a connecting piece is incorporated in the lamp head, which essentially comprises a coaxial annular electrode, the structure of which essentially corresponds to a conventional lamp socket.

Dieses Anschlußstück wird über ein Leiterplättchen, das zwei elektrisch isolierte Bereiche aufweist mit dem oder den Leuchtmitteln verbunden. Der Vorteil einer derart flächigen Leiterplatte ist, daß der parallele Anschluß mehrerer Leuchtmittel gleichzeitig möglich ist.This connector is connected via a printed circuit board, which has two electrically isolated areas with the one or more bulbs. The advantage of such a flat circuit board is that the parallel connection of several bulbs is possible at the same time.

In abermals vorteilhafter Weiterbildung sind in dem Lampenkopf mehrere weiße LED's integriert, die konzentrisch zu einer gedachten Zentralachse angeordnet sind.In another advantageous development, several white LEDs are integrated in the lamp head, which are arranged concentrically to an imaginary central axis.

Die weißen LED's sind auf einem Leuchtmittelträger befestigt. Idealerweise werden die LED's mit dieser Leuchtmitteltrageplattform unmittelbar vergossen, so daß eine robuste Leuchtmittelhalterung gegeben ist, die in ihrer Haltbarkeit und Unempfindlichkeit herkömmlichen Lampenfassungen weit überlegen ist.The white LEDs are mounted on a light source carrier. Ideally, the LEDs are encapsulated directly with this illuminant support platform, so that a robust lamp holder is given, which is far superior in their durability and insensitivity to conventional lamp holders.

Die Linsen sind einander im Sinne einer Bündelung zugeneigt, so daß die Strahlachsen der Linsen gebündelt werden.The lenses are inclined towards each other in the sense of bundling, so that the beam axes of the lenses are bundled.

Dabei ist idealerweise die Neigung der Linsen in Abhängigkeit vom Abstand der Leuchtmittel von den Linsen bzw. deren Brennebene gewählt.Ideally, the inclination of the lenses is selected as a function of the distance of the lamps from the lenses or their focal plane.

Innerhalb des Schaftgehäuses ist ein vorzugsweise mehrzelliger Nickel-Metall-Hydrid-Akku zur Spannungsversorgung der Leuchtmittel integriert. Derartige Nickel-Metall-Hydrid-Akkus haben sich in der hier bevorzugten Anwendung einer häufigen Wiederaufladung als robust und dauerhaft haltbar erwiesen.Within the shaft housing, a preferably multi-cell nickel-metal-hydride battery for powering the bulbs is integrated. Such nickel-metal-hydride batteries have proved to be robust and durable in the preferred application of frequent recharge here.

Zur Wiederaufladung des in dem Schaftgehäuse integrierten Akkus ist auf der von dem Lampenkopf abgewandten Stirnseite des Schaftgehäuses ein ladestecker vorgesehen. Mittels des auf dieser Seite angeordneten Steckkontaktes kann der Akkus in einer herkömmlichen Haushaltssteckdose geladen werden.For recharging the batteries integrated in the shaft housing, a charging plug is provided on the side facing away from the lamp head end side of the shaft housing. By means of arranged on this page plug contact the batteries can be charged in a conventional household socket.

Der Ladestecker kann mit einer Verschlußkappe verschlossen werden. Die Verschlußkappe vermeidet eine Beschädigung der Steckkontakte und verbessert überdies die Handhabbarkeit der Taschenlampe.The charging plug can be closed with a cap. The cap avoids damage to the plug contacts and also improves the handling of the flashlight.

Das Schaftgehäuse der Taschenlampe weist einen im Wesentlichen im rechteckförmigen Querschnitt mit abgerundeten Ecken aus, der im Bereich des Lampenkopfs stufenlos in eine quadratischen Querschnitt überführt wird. Die quadratische Form ist insbesondere in Verbindung mit vier weißen LED's von Vorteil, die auf diese Weise platzsparend konzentrisch zu einer gedachten Zentralachse der Taschenlampe angeordnet sein können.The shaft housing of the flashlight has a substantially rectangular cross-section with rounded corners, which is transferred in the region of the lamp head steplessly in a square cross-section. The square shape is particularly advantageous in conjunction with four white LEDs, which can be arranged in a space-saving concentric manner to an imaginary central axis of the flashlight in this way.

An den Schmalseiten des erwähnten Rechteckquerschnitts ist eine Außenverrippung vorgesehen, die zu einer besseren Haptik der Taschenlampe führt.On the narrow sides of the mentioned rectangular cross-section an external ribbing is provided, which leads to a better feel of the flashlight.

Der Taschenlampenkopf wird mit dem Schaftgehäuse über eine Verrastungskontur lösbar verbunden.The flashlight head is detachably connected to the shaft housing via a Verrastungskontur.

Die vorstehend beschriebene Erfindung wird nachstehend anhand eines in der Zeichnung nur schematisch dargestellten Ausführungsbeispiels näher erläutert.The invention described above is explained below with reference to an embodiment shown only schematically in the drawing.

Es zeigen:

Fig. 1:
eine Taschenlampe in einer Seitenansicht und
Fig. 2
den Lampenkopf der Taschenlampe im Querschnitt.
Show it:
Fig. 1:
a flashlight in a side view and
Fig. 2
the lamp head of the flashlight in cross section.

Die in Fig. 1 gezeigte Taschenlampe 1 kann im Wesentlichen drei Abschnitte unterteilt werden. Es handelt sich dabei um den Lampenkopf 2, das sich daran anschließende Schaftstück 3, das auf der von dem Lampenkopf 2 abgewandten Seite in eine Verschlußkappe 4 übergeht. Die Verschlußkappe 4 verdeckt einen sich unmittelbar an das Schaftstück 3 anschließenden Ladestecker 5, zur Aufladung eines in der Zeichnung nicht weiter dargestellten Nickel-Metall-Hydrid-Akku zur Spannungsversorgung eines in dem Lampenkopf 2 aufgenommenen Leuchtmittels.In the Fig. 1 shown flashlight 1 can be divided into three main sections. It is the lamp head 2, the adjoining shaft piece 3, which merges on the side remote from the lamp head 2 in a cap 4. The cap 4 conceals an immediately adjacent to the shaft piece 3 charging plug 5, for charging a nickel-metal hydride battery not shown in the drawing for supplying power to a recorded in the lamp head 2 bulb.

Bei dem Nickel-Metall-Hydrid-Akkus handelt es sich um einen vierzelligen Akku, der eine Betriebsspannung von 4,8 V liefert.The nickel-metal-hydride battery is a four-cell battery that supplies an operating voltage of 4.8V.

Die Verschlußkappe 4 weist zur Ausbildung einer Klemmpassung eine in der Zeichnung nicht weiter dargestellte Innenverrippung auf, so daß die Verschlußkappe 4 leicht auf den Ladestecker 5 aufgesteckt und wieder abgezogen werden kann.The cap 4 has to form a clamping fit on a not shown in the drawing inner ribbing, so that the cap 4 can be easily plugged onto the charging plug 5 and withdrawn again.

Das Schaftstück 3 und die Verschlußkappe 4 weisen eine im Wesentlichen rechteckförmigen Querschnitt mit angerundeten Ecken auf. An beiden der Schmalseiten des rechteckförmigen Querschnitts ist außenliegend eine Verrippung 7 angeordnet, um eine verbesserte Haptik für die Taschenlampe 1 zu schaffen. Die Außenverrippung 7 verläuft durchgehend über die Verschlußkappe 4 und das Schaftstück 3.The shaft piece 3 and the closure cap 4 have a substantially rectangular cross-section with rounded corners. On both of the narrow sides of the rectangular cross section, a ribbing 7 is arranged on the outside, in order to provide an improved feel for the flashlight 1. The outer ribbing 7 runs continuously over the cap 4 and the shaft piece. 3

Der Querschnitt der Taschenlampe 1 wird im Bereich des Lampenkopfs 2 in einen im Wesentlichen quadratischen Querschnitt überführt, so daß der Lampenkopf 2 gegenüber dem übrigen Schaftstück 3 zumindest zweiseitig verbreitert ist.The cross section of the flashlight 1 is converted in the region of the lamp head 2 into a substantially square cross section, so that the lamp head 2 is widened at least two sides with respect to the remaining shaft piece 3.

Eine Einfassung 11 des Lampenkopfs 2 ist innenliegend in dem an das Schaftstück 3 anschließenden Bereich mit einer Verrastungskontur bzw. mit entsprechenden Hinterschneidungen versehen, die mit Rastnoppen des Schaftstückes 3 in einer bestimmungsgemäßen Endlage verriegelbar sind.An enclosure 11 of the lamp head 2 is provided internally in the adjoining the shaft piece 3 area with a Verrastungskontur or with corresponding undercuts, which can be locked with locking knobs of the shaft piece 3 in an intended end position.

Mittig auf der Breitseite des Schaftstückes 3 ist ein Schiebeschalter 10 zum Ein- und Ausschalten der in dem Lampenkopf 2 angeordneten Leuchtmittel vorgesehen. Über ein entsprechendes Antippen des Schiebeschalters kann auch ein Blinklicht in an sich bekannter Weise realisiert werden. Im Übrigen verrastet der Schalter 10 in den jeweiligen Ein /Aus-Endstellungen.Centered on the broad side of the shaft piece 3, a slide switch 10 is provided for switching on and off of the arranged in the lamp head 2 bulbs. A corresponding tapping of the slide switch can also be used to realize a flashing light in a manner known per se. Incidentally, the switch 10 is locked in the respective on / off end positions.

Der Lampenkopf 2 besteht gemäß der nicht maßstäblichen Schnittdarstellung und Detailansicht in Fig. 2 im Wesentlichen aus einer Kunststoffeinfassung 11, die auf der von dem Schaftstück abgewandten Stirnseite eine transparente Plexiglasabdeckung 12 einfaßt.The lamp head 2 is according to the not to scale sectional view and detail view in Fig. 2 essentially of a plastic enclosure 11, which encloses a transparent Plexiglas cover 12 on the end face remote from the shaft piece.

In diese transparente Plexiglasabdeckungen 12 sind bikonvexe Linsen 13 eingelassen. Dabei sind die bikonvexen Linsen 13 in einem Winkel gegenüber der von der Oberfläche der transparenten Plexiglasabdeckung 12 gebildeten Ebene derart angestellt, daß die Strahlbündel der Linsen 13 sich in einem zentralen Leuchtpunkt vereinigen.In this transparent Plexiglas covers 12 biconvex lenses 13 are embedded. In this case, the biconvex lenses 13 are set at an angle with respect to the plane formed by the surface of the transparent Plexiglas cover 12 such that the beam of the lenses 13 unite in a central luminous spot.

Die Anzahl der Linsen 13 entspricht dabei der Anzahl der in dem Lampenkopf integrierten Leuchtmittel.The number of lenses 13 corresponds to the number of integrated in the lamp head bulbs.

Als Leuchtmittel sind in dem Lampenkopf 2 sog. weiße LED's 14 angeordnet. Anstelle der weißen LED's 14 könnten selbstverständlich auch LED's 14 in einem anderen Farbspektrum, beispielsweise in blau, angeordnet sein. Die LED's 14 sind auf einem Leuchtmittelträger 15 befestigt.
Es handelt sich dabei um eine kreisförmige Plexisglasscheibe, die über Abstandhalter 16 in einem definierten Abstand von der transparenten Abdeckung 12 befestigt ist.
As light sources 2 so-called white LEDs 14 are arranged in the lamp head. Of course, LEDs 14 in a different color spectrum, for example in blue, could also be arranged instead of the white LEDs 14. The LEDs 14 are mounted on a light source carrier 15.
It is a circular Plexisglasscheibe which is fixed by spacers 16 at a defined distance from the transparent cover 12.

Dabei sind auch die Abstandhalter 16 aus Plexiglas gefertigt, so daß die transparente Abdeckung 12 mitsamt dem Leuchtmittelträger 15 und den Abstandhaltern 16 in einem Stück gefertigt werden kann. In diesem Arbeitsgang werden die LED's 14 vorzugsweise fest mit dem Leuchtmittelträger 15 vergossen. Es handelt sich hierbei um eine ausgesprochen robuste und nahezu zerstörungsfreie Befestigung der LED's 14, die in ihrer Robustheit herkömmlichen Lampenfassungen weit überlegen ist.In this case, the spacers 16 are made of Plexiglas, so that the transparent cover 12 together with the illuminant carrier 15 and the spacers 16 can be manufactured in one piece. In this operation, the LEDs 14 are preferably sealed with the illuminant carrier 15. This is a very robust and virtually nondestructive attachment of the LED's 14, which is far superior in their robustness to conventional lamp holders.

Im vorliegenden Ausführungsbeispiel trägt der Leuchtmittelträger 15 vier weiße LED's 14, die auf einem gedachten Umfangskreis konzentrisch zu einer gedachten axialen Zentralachse der Taschenlampe 1 auf dem Leuchtmittelträger 15 angeordnet sind. Dabei sind die Linsen 13 jeweils im Strahlgang der LED's 14 angeordnet. Hieraus ergibt sich, daß die Anzahl der Linsen 13 der Anzahl der eingesetzten LED's 14 entspricht. Der Abstand des Leuchtmittelträgers 15 bzw. der LED's 14 von den Linsen 13 steht in einer vorbestimmten Beziehung zum Neigungswinkel der Linsen 13 bzw. von deren Strahlachse gegenüber einer gedachten Oberflächenebene der transparenten Abdeckung 12. Im vorliegenden Beispiel sind die Linsen um einen Winkel von ca. 2 Grad gegenüber der Oberflächenebene der transparenten Abdeckung 12 angestellt, bzw. einander zugeneigt.In the present exemplary embodiment, the illuminant carrier 15 carries four white LEDs 14, which on an imaginary circumferential circle are concentric with an imaginary axial central axis of the flashlight 1 on the illuminant carrier 15 are arranged. The lenses 13 are each arranged in the beam path of the LEDs 14. It follows that the number of lenses 13 corresponds to the number of LEDs 14 used. The distance of the illuminant carrier 15 or of the LEDs 14 from the lenses 13 is in a predetermined relationship to the angle of inclination of the lenses 13 or of their beam axis with respect to an imaginary surface plane of the transparent cover 12. In the present example, the lenses are at an angle of approx. 2 degrees relative to the surface plane of the transparent cover 12 employed or inclined towards each other.

Radial innenliegend umschließt der Leuchtmittelträger ein ebenfalls mit dem Leuchtmittelträger vergossenes Anschlußstück 17, das im Wesentlichen aus einer Ringelektrodenanordnung mit einer zentralen Stiftelektrode 20 und einer koaxoialen Ringelektrode 21 besteht.Radially inside the lamp carrier encloses a likewise molded with the illuminant carrier connector 17, which consists essentially of a ring electrode assembly with a central pin electrode 20 and a coaxial annular electrode 21.

Das Anschlußstück 17 entspricht in seinem Aufbau im wesentlichen einer herkömmlichen Lampenfassung, wie beispielsweise einer Halogenlampe, wie sie üblicherweise in Taschenlampen 1 eingesetzt werden. Aufgrund dieses Aufbaus des Anschlußstückes 17 kann der Lampenkopf 2 mit den LED's 14 in Verbindung mit einem Schaftstück 3 und dessen integrierten Akku benutzt werden, welches bisher in Verbindung mit einer herkömmlichen Lampenfassung benutzt wurde. Der neuartige Lampenkopf 2 mit den integrierten LED's 14 kann also mit bestehenden Schaftstücken 3 nachgerüstet werden oder bereits vorhandene Schaftstücke 3 als Wechselakku für den neuartigen Lampenkopf 2 eingesetzt werden. Dies ist insbesondere deshalb vorteilhaft, weil die Lebensdauer der weißen LED's und deren Strahlkraft den bisherigen Halogenlampen weit überlegen ist.The connector 17 corresponds in its construction substantially a conventional lamp holder, such as a halogen lamp, as they are commonly used in flashlights 1. Due to this structure of the fitting 17, the lamp head 2 can be used with the LED's 14 in conjunction with a shaft piece 3 and its integrated battery, which has hitherto been used in conjunction with a conventional lamp socket. The novel lamp head 2 with the integrated LED's 14 can therefore be retrofitted with existing shank pieces 3 or already existing shank pieces 3 are used as Wechselakku for the novel lamp head 2. This is particularly advantageous because the life of the white LEDs and their radiance is far superior to the previous halogen lamps.

Ein weiterer Vorteil ist der geringere Energiebedarf der weißen LED's gegenüber herkömmlichen Halogenlampen.Another advantage is the lower energy consumption of white LEDs compared to conventional halogen lamps.

Die Stiftelektrode 20 wird einem Anschlußkontakt an die in dem Schaftstück 3 angeordneten Spannungsversorgung angeschlossen. Eine Ringelektrode 21 des Anschlußstückes 17 bildet den Massenpol der Elektrodenanordnung. Unterhalb des Leuchtmittelträgers 15 ist - gehalten durch ein Befestigungsstück 22 ein Leiterplättchen 23 zum Parallelanschluß der LED's 14 vorgesehen. Bei dem Leiterplättchen 23 handelt es sich um eine viereckige Leiterplatte mit einer innenliegenden Bohrung, die beabstandet von dem Anschlußstück 17 unterhalb des Leuchtmittelträgers 15 angeordnet ist. Das Leiterplättchen 23 umfaßt zwei elektrisch isolierte Bereiche, von denen einer mit der Stiftelektrode 20 und einer mit der Ringelektrode 21 elektrisch leitend verbunden ist.The pin electrode 20 is connected to a terminal contact to the arranged in the shaft piece 3 power supply. A ring electrode 21 of the connecting piece 17 forms the ground pole of the electrode arrangement. Below the illuminant carrier 15 is held by a fixing piece 22, a printed circuit board 23 for parallel connection of the LEDs 14 is provided. The printed circuit board 23 is a quadrangular printed circuit board having an inner bore, which is arranged at a distance from the connecting piece 17 below the illuminant carrier 15. The printed circuit board 23 comprises two electrically isolated regions, one of which is electrically connected to the pin electrode 20 and one with the ring electrode 21.

Die Kontakte der LED's 14 sind mit dem Leiterplättchen 23 verbunden, wobei jeweils ein Kontakt an Spannung und ein Kontakt an Masse liegt.The contacts of the LED's 14 are connected to the printed circuit board 23, wherein in each case one contact to voltage and one contact to ground.

Der vorstehend beschriebenen Lampenkopf 2 kann aufgrund des Aufbaus des Anschlußstücks 17, wie bereits erwähnt, ohne weiteres mit einem herkömmlichen Schaftstück 3 verbunden werden. Vorstehend ist somit eine Taschenlampe 1 mit einem Lampenkopf 2 zur Nachrüstung bestehender Schaftstücke 3 beschrieben, die bei einer höheren Lichtausbeute einen geringeren Energiebedarf aufweist.The lamp head 2 described above, due to the structure of the connector 17, as already mentioned, can be easily connected to a conventional shaft piece 3. Thus, a flashlight 1 with a lamp head 2 for retrofitting existing shaft pieces 3 is described above, which has a lower energy requirement at a higher light output.

BEZUGSZEICHENLISTELIST OF REFERENCE NUMBERS

11
Taschenlampeflashlight
22
Lampenkopflamp head
33
Schaftstückbody element
44
Verschlußkappecap
55
Ladesteckercharging plug
77
Außenverrippungouter ribbing
1010
Schiebeschalterslide switches
1111
Einfassungmount
1212
Transparente AbdeckungTransparent cover
1313
Linselens
1414
LEDLED
1515
LeuchtmittelträgerLamp support
1616
Abstandhalterspacer
1717
Anschlußstückconnector
2020
Stiftelektrodepin electrode
2121
Ringelektrodering electrode
2222
Befestigungsstückfastening piece
2323
LeiterplättchenHead of platelets

Claims (12)

  1. Torch with a torch head (2) which encloses at least one, preferably white, LED (14) as light-emitting means and which is connectible with a shank member (3) enclosing at least one battery as voltage supply, wherein an electrical connection of the light-emitting means with the voltage supply is formed by means of the interposition of a connecting member (17) and that connecting member (17) corresponds at least substantially with a lamp holder, preferably a halogen lamp, characterised in that the lamp head is detachably connected with the shank member and that several, preferably four, white LEDs (14) are arranged in this lamp head (2) concentrically with a notional central axis of the torch (1) and the lamp head (2) is closed on the end face, which is remote from the shank member (3), by a transparent cover (12), preferably of Plexiglas, and a number, which corresponds with the number of LEDs (14) used, of preferably biconvex lenses (13) is formed in this transparent cover (12) as an integral constituent.
  2. Torch according to claim 1, characterised in that the connecting member (17) is a coaxial ring electrode arrangement, wherein the radially outwardly disposed ring electrode (21) is connected with the ground pole and a concentric inwardly disposed pin electrode (20) is connected with the voltage supply of the torch (1).
  3. Torch according to claim 1 or 2, characterised in that the ring electrode arrangement of the connecting member (17) is electrically connected with a circuitboard (23) concentrically surrounding this ring electrode (21), wherein this circuitboard (23) has two electrically insulated regions, of which one region is electrically connected with the ring electrode (21) and the other region is electrically connected with the pin electrode (20) of the connecting member (17).
  4. Torch according to one of the preceding claims, characterised in that the LEDs (14) are connected, preferably fixedly cast, with an electrically non-conductive light-emitting means carrier (15).
  5. Torch according to claim 4, characterised in that the lenses (13) are formed in the transparent cover (12) in such a manner that the axes of the lenses are inclined towards one another relative to a notional surface plane of the transparent cover (12) for generation of a beam.
  6. Torch according to claim 5, characterised in that the angle of inclination of the lenses (13) is selected in dependence on the spacing of the lenses (13) from the transparent cover (12).
  7. Torch according to one of the preceding claims, characterised in that the battery integrated in the shank member is constructed from four nickel-metal-hydride cells.
  8. Torch according to claim 7, characterised in that the shank member (3) opens on the side remote from the lamp head (2) into a charging plug (5) for connection with a domestic socket.
  9. Torch according to claim 8, characterised in that charging plug (5) is closable by means of a closure cap (4) which is detachably fastened by means of a clamping fit and which terminates flushly with the shank member (3).
  10. Torch according to one of the preceding claims, characterised in that the torch (1) has a substantially rectangular cross-section with respectively rounded corners, wherein the rectangular cross-section of the shank member (3) transfers steplessly in the region of the lamp head (2) into a square cross-section with similarly rounded corners.
  11. Torch according claim 10, characterised in that the shank member (3) and the closure cap (4) are provided at each of their narrow sides with an external ribbing (7).
  12. Torch according to one of the preceding claims, characterised in that the lamp head (2) is detachably connected with the shank member (3) by means of a corresponding detent contour, wherein at least two detenting flanges of the shank member (3) detent in the assembled position with corresponding undercuts of the lamp head (2).
EP03001721A 2002-01-29 2003-01-27 Flashlight Expired - Lifetime EP1331436B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE20201267U 2002-01-28
DE20201267U DE20201267U1 (en) 2002-01-29 2002-01-29 flashlight

Publications (3)

Publication Number Publication Date
EP1331436A2 EP1331436A2 (en) 2003-07-30
EP1331436A3 EP1331436A3 (en) 2006-06-07
EP1331436B1 true EP1331436B1 (en) 2008-05-07

Family

ID=7967067

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03001721A Expired - Lifetime EP1331436B1 (en) 2002-01-29 2003-01-27 Flashlight

Country Status (6)

Country Link
US (1) US6805461B2 (en)
EP (1) EP1331436B1 (en)
AT (1) ATE394632T1 (en)
DE (2) DE20201267U1 (en)
ES (1) ES2306818T3 (en)
HK (1) HK1059300A1 (en)

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Also Published As

Publication number Publication date
US6805461B2 (en) 2004-10-19
HK1059300A1 (en) 2004-06-25
ES2306818T3 (en) 2008-11-16
EP1331436A2 (en) 2003-07-30
US20030174497A1 (en) 2003-09-18
EP1331436A3 (en) 2006-06-07
DE20201267U1 (en) 2002-05-16
ATE394632T1 (en) 2008-05-15
DE50309757D1 (en) 2008-06-19

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