EP3717826B1 - Flashlight - Google Patents

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Publication number
EP3717826B1
EP3717826B1 EP18815935.4A EP18815935A EP3717826B1 EP 3717826 B1 EP3717826 B1 EP 3717826B1 EP 18815935 A EP18815935 A EP 18815935A EP 3717826 B1 EP3717826 B1 EP 3717826B1
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EP
European Patent Office
Prior art keywords
seal
led
housing
flashlight
flashlight according
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP18815935.4A
Other languages
German (de)
French (fr)
Other versions
EP3717826A1 (en
Inventor
Erich Buhl
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.)
Ledlenser GmbH and Co KG
Original Assignee
Ledlenser GmbH and Co KG
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Publication date
Application filed by Ledlenser GmbH and Co KG filed Critical Ledlenser GmbH and Co KG
Priority to PL18815935T priority Critical patent/PL3717826T3/en
Publication of EP3717826A1 publication Critical patent/EP3717826A1/en
Application granted granted Critical
Publication of EP3717826B1 publication Critical patent/EP3717826B1/en
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21L—LIGHTING DEVICES OR SYSTEMS THEREOF, BEING PORTABLE OR SPECIALLY ADAPTED FOR TRANSPORTATION
    • F21L4/00—Electric lighting devices with self-contained electric batteries or cells
    • F21L4/005—Electric lighting devices with self-contained electric batteries or cells the device being a pocket lamp
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V14/00—Controlling the distribution of the light emitted by adjustment of elements
    • F21V14/06—Controlling the distribution of the light emitted by adjustment of elements by movement of refractors
    • F21V14/065—Controlling the distribution of the light emitted by adjustment of elements by movement of refractors in portable lighting devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V19/00—Fastening of light sources or lamp holders
    • F21V19/001—Fastening of light sources or lamp holders the light sources being semiconductors devices, e.g. LEDs
    • F21V19/003—Fastening of light source holders, e.g. of circuit boards or substrates holding light sources
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V31/00—Gas-tight or water-tight arrangements
    • F21V31/005—Sealing arrangements therefor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING 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
    • F21Y2115/00—Light-generating elements of semiconductor light sources
    • F21Y2115/10—Light-emitting diodes [LED]

Definitions

  • the invention relates to a flashlight with a housing in which at least one LED fastened on a carrier body and an auxiliary lens are arranged, which can be displaced relative to one another in order to focus the emitted light cone.
  • Such a flashlight is for example from the DE 20 2016 101 541 U1 and the US 2010/0219775 A1 known.
  • Battery-operated flashlights are an indispensable tool for providing light in the event of a power failure or when there is no power connection.
  • the light-emitting diode which is now available with high luminosity, has replaced the incandescent lamp that was previously used without exception.
  • the particular advantages of LEDs are a comparatively low power requirement, high impact and shock resistance and a significantly longer service life than incandescent lamps.
  • the small-volume LEDs enabled a compact design of flashlights in connection with high light intensities.
  • the LEDs are preferably arranged on a carrier body in the form of a base, which can be electrically connected via suitable contact points and power connections to the batteries arranged in a battery compartment via a switch.
  • the ancillary optics consisting of a lens or a lens system can be displaced relative to the light source, i.e. the LED.
  • a relatively large cone angle for broad illumination or a small light cone angle consisting almost of parallel light can be set by means of a relative displacement in the longitudinal axis, with which considerable light ranges can be achieved.
  • a compact lens attachment is also combined with a reflector, in the focal point of which the longitudinally axially displaceable LED is arranged.
  • a reflector essentially serves to reflect laterally emitted light in the direction of the ancillary optics.
  • High power LED require cooling that is implemented by means of a heat sink that is connected to the LED carrier or is part of the carrier.
  • the DE 20 2016 101 541 U1 describes a flashlight in which a longitudinally axially displaceable magnetic body is provided in the housing, which is indirectly or directly in magnetic operative connection with a sliding sleeve which is at least partially made of ferromagnetic material and has at least one magnetic element.
  • the sliding sleeve is mounted inside the housing and accommodates the ancillary optics, so that a displacement of the magnetic body causes a displacement of the ancillary optics and consequently a focusing or defocusing of the emitted light cone.
  • One seal consisting of a membrane, closes the space between the LED and the ancillary optics in a dust- and water-tight manner. Due to its elasticity, the membrane enables a longitudinal axial displacement of the LED relative to the optical attachment without this seal being exposed to frictional forces, as occur in particular with the O-rings used according to the prior art. The seal therefore works without wear.
  • the type of attachment of the seal to the ancillary optics and the LED carrier can be selected as desired, because this seal is practically not subject to wear and tear during the life of the lamp and therefore does not have to be replaced.
  • the seal is provided on the upper edge with a collar which is clamped between the ancillary optics and the housing, preferably in a groove machined into the inner wall of the housing.
  • the lower edge of the seal is connected to an annular body, in whose surface facing the inside of the seal a groove is embedded, which forms a positive connection with a hook-shaped nose of the carrier body.
  • the seal has an annular rib on its inner jacket which engages in a groove in the carrier body for the LED.
  • the seal is preferably made of an elastic material, namely silicone rubber or natural rubber with a thickness (wall thickness) of 0.5 mm to 0.7 mm, for example 0.6 mm.
  • connection at both ends ensures a secure fixation and a dust- and water-tight sealing of the said interior space between the LED and the ancillary optics.
  • the collar, the seal and the ring body form an integral part.
  • the optical attachment is arranged in a longitudinally displaceable lamp head, whereas the LED or its carrier body is arranged in a stationary manner in the lamp housing.
  • the longitudinal axial displacement of the lamp head can also be solved by means of a threaded connection, in which the largest possible thread pitch is selected to avoid strong torsional loads on the seal.
  • a helical guide can be provided between the lamp head and the lamp housing, by means of which the lamp head with the ancillary optics is mounted in a longitudinally displaceable manner relative to the LED, which is fixedly arranged in the lamp housing.
  • the carrier of the LED on the outer jacket is provided with longitudinal ribs which are placed in grooves on the inner wall of the lamp head intervention.
  • several circumferential grooves are provided, which optionally accommodate at least one rib of the carrier.
  • the carrier can thus be displaced relative to the head and fixed at equidistant intervals, which are determined by the groove spacings.
  • Such a configuration requires elasticity of one of the two bodies, preferably the lamp head, in the area of the inside designed with grooves.
  • FIG. 1 Battery-operated flashlights are known in principle, so that the arrangement of the batteries or battery, the switch for switching the flashlight on and off and the possible designs of an auxiliary lens consisting of one or more lenses are not described in more detail.
  • Fig. 1 are the different parts that are in a lamp housing 10, which is cylindrical in the present case, shown in detail.
  • the light cone can be varied by shifting the optical attachment 13 with respect to the LED 11, which is basically known from the prior art.
  • a membrane 14 is provided for dustproof and watertight shielding, which is shown in FIG Fig. 3 is shown in detail.
  • the front end is formed by the ring 15, which, as from Fig.
  • the lamp head 17 is formed by a sleeve-shaped body, over the front end of which said ring 15 is pushed and forms a frictional connection there.
  • a cover body 18 with an opening for the implementation of the LED 11 rests on the upper side of the board.
  • the cover body 18 has a hook-shaped nose 19 as a circumferential part, which rests in a groove 20 in the membrane 14 in a form-fitting manner.
  • the membrane has a collar 21 which engages in a groove 22 in the ring 15. How out Fig.
  • the membrane 14 is fixed in the lamp head housing 17 at the front edge and in the rear area via the form-fitting connection 19, 20.
  • the membrane 14 is elastic and preferably has a thickness of 0.6 mm. When the optical attachment is displaced away from the LED 11, the membrane is stretched, and when it is returned in the direction of the LED 11, it is slightly compressed. In any case, the interior space 23 between the LED and the ancillary optics is enclosed by the membrane 14 in a water-tight and liquid-tight manner.
  • the cover body 18 also has 4 latching hooks 24 at its rear end, which engage in correspondingly corresponding recesses 25 of a holder 26.
  • the holder 26 has two bores through which the pins 27 and 28 can be inserted as a voltage supply. These pins are fixed to the circuit board 12 via clamping bodies. The pins themselves protrude from a base plate 29, which is mounted in the lamp housing 10 to prevent rotation.
  • the support body is formed as a whole by parts 18, 26 and 29.
  • the holder 26 has two projecting circumferential ribs 30, 31 on its outer jacket, which engage releasably in grooves 32, 33, 34, 35 or 36 on the inner edge of the housing, namely the lamp head 17.
  • These grooves 32, 33, 34, 35 and 36 serve in connection with the ribs 30, 31 as locking profiles through which the lamp head can be pushed back and forth in the direction of the double arrow 37, the lamp head in each case carrying the ancillary optics 13, whereas the LED together with the carrier body remains fixed in place with respect to the housing 10.
  • the Grooves 32 to 36 are arranged equidistantly and form the respective latching possibilities of the lamp head.
  • FIG. 4 to 6 a differently designed flashlight design has been chosen, in which the lamp head is not moved by means of a linear feed relative to the housing, but the lamp head is arranged rotatably relative to the lamp housing, the rotation simultaneously causing a translational movement of the lamp head 47 and thus a change in the distance of the ancillary optics 43 compared to the LED 41 can be realized.
  • the lamp housing 40 and the lamp head 47 are rotatably connected to one another. Due to the construction selected from the guide part 50 and the slide 51, the lamp head 47 is moved when the lamp head rotates together with the ancillary optics 43 so that the distance between the ancillary optics 43 and the LED 41, which is arranged on a circuit board 42, is reduced.
  • an insulator 49 is required which prevents a short circuit due to the selected spring contacts 46.
  • the parts 41, 42 and 47 are covered by a cover 48 to the lamp head aperture, which is determined by the ring 45 screwed on.
  • a membrane 44 serves as a seal, which seals off the space between the LED and the ancillary optics in a dust-tight and watertight manner.
  • This membrane 44 has an outer rib 38 which engages in a corresponding groove in the lamp head.
  • the membrane 44 has an annular rib 39 which is fixed in a corresponding groove in the holder 53.
  • the membrane 44 is designed as a "rotary bellows", in which, however, acute-angled apex lines, as is known in the case of rotary bellows, have been dispensed with in order to avoid excessive wear.
  • an O-ring 52 is also used in order to counteract the restoring torque of the diaphragm 44 after a corresponding rotation.
  • the slide 51 is fastened in the lamp head by means of locking hooks, so that this slide can move the entire lamp head in the guide part, which preferably has three guide grooves for guiding the slide.

Description

Die Erfindung betrifft eine Taschenlampe mit einem Gehäuse, in dem mindestens eine auf einem Trägerkörper befestigte LED und eine Vorsatzoptik angeordnet sind, die zur Fokussierung des abgestrahlten Lichtkegels relativ zueinander verschiebbar sind.The invention relates to a flashlight with a housing in which at least one LED fastened on a carrier body and an auxiliary lens are arranged, which can be displaced relative to one another in order to focus the emitted light cone.

Eine solche Taschenlampe ist beispielsweise aus der DE 20 2016 101 541 U1 und der US 2010/0219775 A1 bekannt.Such a flashlight is for example from the DE 20 2016 101 541 U1 and the US 2010/0219775 A1 known.

Batteriebetriebene Taschenlampen sind ein unverzichtbares Hilfsmittel, um bei Stromausfall oder bei fehlenden Stromanschlüssen Licht bereitstellen zu können. Die Leuchtdiode, die inzwischen mit hohen Leuchtstärken verfügbar ist, hat die früher ausnahmslos verwendete Glühlampe verdrängt. Die besonderen Vorteile der LED sind ein vergleichsweise geringer Strombedarf, eine hohe Schlag- und Stoßfestigkeit und eine gegenüber Glühlampen wesentlich längere Lebensdauer. Die kleinvolumigen LED ermöglichten eine kompakte Bauweise von Taschenlampen in Verbindung mit hohen Lichtstärken. Vorzugsweise werden die LED auf einem Trägerkörper in Form eines Sockels angeordnet, der über geeignete Kontaktpunkte und Stromanschlüsse mit den in einer Batteriefach angeordneten Batterien über einen Schalter elektrisch verbindbar ist.Battery-operated flashlights are an indispensable tool for providing light in the event of a power failure or when there is no power connection. The light-emitting diode, which is now available with high luminosity, has replaced the incandescent lamp that was previously used without exception. The particular advantages of LEDs are a comparatively low power requirement, high impact and shock resistance and a significantly longer service life than incandescent lamps. The small-volume LEDs enabled a compact design of flashlights in connection with high light intensities. The LEDs are preferably arranged on a carrier body in the form of a base, which can be electrically connected via suitable contact points and power connections to the batteries arranged in a battery compartment via a switch.

Um den abgestrahlten Lichtkegel verändern zu können, ist die aus einer Linse oder einem Linsensystem bestehende Vorsatzoptik relativ zur Lichtquelle, das heißt der LED verschiebbar. Durch längsaxiale Relativverschiebung lässt sich ein relativ großer Kegelwinkel zur breiten Ausleuchtung oder ein nahezu aus parallelem Licht bestehender kleiner Lichtkegelwinkel einstellen, bei dem sich erhebliche Leuchtweiten erzielen lassen. In Einzelfällen wird eine kompakte Vorsatzoptik auch mit einem Reflektor kombiniert, in dessen Brennpunkt die längsaxial verschiebbare LED angeordnet ist. Ein solcher Reflektor dient im Wesentlichen dazu, seitlich abgestrahltes Licht in Richtung auf die Vorsatzoptik zu reflektieren. Hochleistungs-LED benötigen eine Kühlung, die mittels eines Kühlkörpers realisiert wird, der mit dem LED-Träger verbunden oder ein Teil des Trägers ist.In order to be able to change the emitted light cone, the ancillary optics consisting of a lens or a lens system can be displaced relative to the light source, i.e. the LED. A relatively large cone angle for broad illumination or a small light cone angle consisting almost of parallel light can be set by means of a relative displacement in the longitudinal axis, with which considerable light ranges can be achieved. In individual cases, a compact lens attachment is also combined with a reflector, in the focal point of which the longitudinally axially displaceable LED is arranged. Such a reflector essentially serves to reflect laterally emitted light in the direction of the ancillary optics. High power LED require cooling that is implemented by means of a heat sink that is connected to the LED carrier or is part of the carrier.

In der EP 2 596 279 B1 wird eine Taschenlampe beschrieben, in deren Gehäuse eine Batteriekartusche gelagert ist, die endseitig einen Druckschalter aufweist. In einer Endkappe befindet sich ein Druckknopf, der mit einem Druckschalter in Wirkverbindung steht. Zwischen diesem Druckknopf und dem Druckschalter ist ein Dichtelement in Form einer Kappe aus einem elastischen Material angeordnet, wobei die Kappe eine ringförmige Klemmfläche sowie eine davon abstehende Erhebung aufweist. Mit dieser Maßnahme wird eine Wasserdichtigkeit der Taschenlampe angestrebt. Allerdings besitzt die in den Zeichnungen dieser Druckschrift dargestellte Taschenlampe offensichtlich keine Möglichkeit zur Lichtkegelverstellung.In the EP 2 596 279 B1 describes a flashlight, in the housing of which a battery cartridge is mounted, which has a pressure switch at the end. In an end cap there is a push button which is in operative connection with a pressure switch. A sealing element in the form of a cap made of an elastic material is arranged between this push button and the push button switch, the cap having an annular clamping surface and an elevation protruding therefrom. With this measure, the aim is to make the flashlight watertight. However, the flashlight shown in the drawings of this publication obviously has no possibility of adjusting the light cone.

Die DE 20 2016 101 541 U1 beschreibt eine Taschenlampe, bei der im Gehäuse ein längsaxial verschiebbarer Magnetkörper vorgesehen ist, der mittelbar oder unmittelbar in magnetischer Wirkverbindung mit einer Schiebehülse steht, die zumindest teilweise aus ferromagnetischem Material besteht und mindestens ein Magnetelement besitzt. Die Schiebehülse ist innerhalb des Gehäuses gelagert und nimmt die Vorsatzoptik auf, so dass eine Verschiebung des Magnetkörpers eine Verschiebung der Vorsatzoptik und mithin eine Fokussierung oder Defokussierung des abgestrahlten Lichtkegels bewirkt.the DE 20 2016 101 541 U1 describes a flashlight in which a longitudinally axially displaceable magnetic body is provided in the housing, which is indirectly or directly in magnetic operative connection with a sliding sleeve which is at least partially made of ferromagnetic material and has at least one magnetic element. The sliding sleeve is mounted inside the housing and accommodates the ancillary optics, so that a displacement of the magnetic body causes a displacement of the ancillary optics and consequently a focusing or defocusing of the emitted light cone.

Abgesehen davon, dass die Relativverschiebung der Vorsatzoptik mittels Magneten nur dann funktionssicher ist, wenn und solange eine exakte Führung der zu verschiebenden Teile gewährleistet ist, sind auch keine Maßnahmen vorgesehen, welche verhindern, dass Feuchtigkeit und/oder Staub in den Lampenkopf, insbesondere in den Zwischenraum zwischen der Vorsatzoptik und der LED beziehungsweise dem LED-Träger eindringen können. Die in vielen Taschenlampen verwendeten O-Ringe als Dichtung im Lampenkopf oder im Bereich der Endkappe reichen jedenfalls nicht aus, um die gewünschte Wasser- und Staubdichtigkeit zu erlangen.Apart from the fact that the relative displacement of the ancillary optics by means of magnets is only functionally reliable if and as long as an exact guidance of the parts to be displaced is guaranteed, no measures are provided to prevent moisture and / or dust from getting into the lamp head, in particular into the Gap between the lens attachment and the LED or the LED carrier can penetrate. The O-rings used in many flashlights as seals in the lamp head or in the area of the end cap are in any case not sufficient to achieve the desired water and dust tightness.

Es ist Aufgabe der vorliegenden Erfindung, diesen Mangel abzustellen, insbesondere eine wasser- und staubdichte Taschenlampe zu schaffen, die ohne hohen technischen Aufwand einfach aufgebaut ist.It is the object of the present invention to remedy this deficiency, in particular to create a waterproof and dustproof flashlight which is simply constructed without high technical effort.

Diese Aufgabe wird durch die Taschenlampe nach Anspruch 1 gelöst. Die eine aus einer Membran bestehende Dichtung schließt den Raum zwischen der LED und der Vorsatzoptik staub- und wasserdicht. Die Membran ermöglicht aufgrund ihrer Elastizität eine längsaxiale Relativverschiebung der LED zur Vorsatzoptik ohne dass diese Dichtung Reibungskräften ausgesetzt ist, wie sie insbesondere bei den nach dem Stand der Technik verwendeten O-Ringen auftreten. Die Dichtung arbeitet somit verschleißfrei. Die Art der Befestigung der Dichtung an der Vorsatzoptik und den LED-Träger kann beliebig gewählt werden, weil diese Dichtung während der Lebensdauer der Lampe praktisch keinem Verschleiß unterliegt und somit nicht ausgetauscht werden muss. Nach der Erfindung ist die Dichtung am oberen Rand mit einem Kragen versehen, der zwischen der Vorsatzoptik und dem Gehäuse, vorzugsweise in einer an der Gehäuseinnwand eingearbeiteten Nut eingeklemmt wird. Der untere Rand der Dichtung ist in einer ersten Ausführungsvariante mit einem Ringkörper verbunden, in dessen der Dichtungsinnenseite zugewandten Fläche eine Nut eingelassen ist, die mit einer hakenförmigen Nase des Trägerkörpers eine formschlüssige Verbindung bildet. In einer zweiten, alternativ verwendbaren Ausführungsform weist die Dichtung an ihrem Innenmantel eine ringförmige Rippe auf, die in eine Nut des Trägerkörpers für die LED eingreift.This object is achieved by the flashlight according to claim 1. One seal, consisting of a membrane, closes the space between the LED and the ancillary optics in a dust- and water-tight manner. Due to its elasticity, the membrane enables a longitudinal axial displacement of the LED relative to the optical attachment without this seal being exposed to frictional forces, as occur in particular with the O-rings used according to the prior art. The seal therefore works without wear. The type of attachment of the seal to the ancillary optics and the LED carrier can be selected as desired, because this seal is practically not subject to wear and tear during the life of the lamp and therefore does not have to be replaced. According to the invention, the seal is provided on the upper edge with a collar which is clamped between the ancillary optics and the housing, preferably in a groove machined into the inner wall of the housing. In a first embodiment variant, the lower edge of the seal is connected to an annular body, in whose surface facing the inside of the seal a groove is embedded, which forms a positive connection with a hook-shaped nose of the carrier body. In a second, alternatively usable embodiment, the seal has an annular rib on its inner jacket which engages in a groove in the carrier body for the LED.

Vorzugsweise besteht die Dichtung aus einem elastischen Werkstoff, nämlich Silikonkautschuk oder Naturkautschuk mit einer Dicke (Wandstärke) von 0,5 mm bis 0,7 mm, beispielsweise 0,6 mm.The seal is preferably made of an elastic material, namely silicone rubber or natural rubber with a thickness (wall thickness) of 0.5 mm to 0.7 mm, for example 0.6 mm.

Eine solche Verbindung an beiden Enden sorgt für eine sichere Fixierung und eine staub- und wasserdichte Versiegelung des genannten Innenraums zwischen der LED und der Vorsatzoptik.Such a connection at both ends ensures a secure fixation and a dust- and water-tight sealing of the said interior space between the LED and the ancillary optics.

Vorzugsweise bilden der Kragen, die Dichtung und der Ringkörper ein einstückiges Teil.Preferably, the collar, the seal and the ring body form an integral part.

Es bestehen mehrere Möglichkeiten, die Relativverschiebung der Vorsatzoptik gegenüber der LED umzusetzen. Im vorliegenden Fall ist die Vorsatzoptik in einem längsverschiebbaren Lampenkopf angeordnet, wohingegen die LED beziehungsweise deren Trägerkörper ortsfest im Lampengehäuse angeordnet ist. Die längsaxiale Lampenkopfverschiebung kann auch mittels einer Gewindeverbindung gelöst werden, bei der zur Vermeidung starker Torsionsbelastungen der Dichtung eine möglichst große Gewindesteigung gewählt wird. Statt eines Gewindes zwischen dem Lampenkopf und dem Lampengehäuse kann in einer weiteren Ausgestaltung der Erfindung zwischen dem Lampenkopf und dem Lampengehäuse eine wendelförmige Führung vorgesehen sein, worüber der Lampenkopf mit der Vorsatzoptik gegenüber der LED, die fest im Lampengehäuse angeordnet ist, längsverschiebbar gelagert ist.There are several options for implementing the relative displacement of the auxiliary optics with respect to the LED. In the present case, the optical attachment is arranged in a longitudinally displaceable lamp head, whereas the LED or its carrier body is arranged in a stationary manner in the lamp housing. The longitudinal axial displacement of the lamp head can also be solved by means of a threaded connection, in which the largest possible thread pitch is selected to avoid strong torsional loads on the seal. Instead of a thread between the lamp head and the lamp housing, in a further embodiment of the invention, a helical guide can be provided between the lamp head and the lamp housing, by means of which the lamp head with the ancillary optics is mounted in a longitudinally displaceable manner relative to the LED, which is fixedly arranged in the lamp housing.

Nach einer weiteren Ausgestaltung ist eine mehrteilige Ausbildung des Trägerkörpers vorgesehen, der folgende Teile aufweist:

  • Eine die LED tragende Platine mit Spannungsanschlüssen,
  • zwei Klemmelemente zur Fixierung der Platine an Stiften, die zur Spannungsversorgung dienen und aus
  • einer drehgesichert im Lampengehäuse fixierten Basisplatte herausragen,
  • einen Halter mit Bohrungen zur Durchführung der Stifte und
  • einen vorderen Abdeckkörper, der eine vordere Durchbrechung für die LED sowie nach hinten ragende Rasthaken aufweist, die in korrespondierende Ausnehmungen des Halters eingreifen, vorzugsweise unter Bildung einer Rastverbindung.
According to a further embodiment, a multi-part design of the carrier body is provided, which has the following parts:
  • A circuit board carrying the LED with voltage connections,
  • two clamping elements for fixing the board to pins that are used for power supply and off
  • a base plate fixed against rotation in the lamp housing protrude,
  • a holder with holes for the pins and
  • a front cover body which has a front opening for the LED and rearwardly projecting latching hooks which engage in corresponding recesses in the holder, preferably forming a latching connection.

Bevorzugt wird eine Lösung, bei der der Träger der LED an dem Außenmantel mit Längsrippen versehen ist, die in Nuten an der Innenwand des Lampenkopfes eingreifen. Je nach gewünschtem Verschiebeweg sind mehrere umlaufende Nuten vorgesehen, die wahlweise mindestens eine Rippe des Trägers aufnehmen. In Art einer Ratschen-Verbindung kann somit der Träger gegenüber dem Kopf verschoben und in äquidistanten Abständen, die durch die Nutenabstände bestimmt werden, fixiert werden. Eine solche Ausgestaltung erfordert eine Elastizität eines der beiden Körper, vorzugsweise des Lampenkopfes im Bereich der mit Nuten ausgestalteten Innenseite.A solution is preferred in which the carrier of the LED on the outer jacket is provided with longitudinal ribs which are placed in grooves on the inner wall of the lamp head intervention. Depending on the desired displacement path, several circumferential grooves are provided, which optionally accommodate at least one rib of the carrier. In the manner of a ratchet connection, the carrier can thus be displaced relative to the head and fixed at equidistant intervals, which are determined by the groove spacings. Such a configuration requires elasticity of one of the two bodies, preferably the lamp head, in the area of the inside designed with grooves.

Weitere Ausführungsformen werden anhand der Zeichnungen erläutert. Es zeigen:

Fig. 1
eine Taschenlampe gemäß der vorliegenden Erfindung in einer explosionsartigen Darstellung,
Fig. 2
eine Schnittansicht durch den Lampenkopf einer Taschenlampe,
Fig. 3
eine Schnittansicht durch eine Membran,
Fig. 4
eine weitere erfindungsgemäße Taschenlampe nach einer Explosion-Darstellung,
Fig. 5
eine Schnittansicht durch den Kopf der Lampe nach Fig. 4 und
Fig. 6
eine Schnittansicht durch eine andersgestaltete Membran.
Further embodiments are explained with reference to the drawings. Show it:
Fig. 1
a flashlight according to the present invention in an exploded view,
Fig. 2
a sectional view through the lamp head of a flashlight,
Fig. 3
a sectional view through a membrane,
Fig. 4
another flashlight according to the invention after an explosion representation,
Fig. 5
a sectional view through the head of the lamp according to Fig. 4 and
Fig. 6
a sectional view through a differently designed membrane.

Batterie betriebene Taschenlampen sind im Prinzip bekannt, so dass die Anordnung der Batterien oder Batterie, des Schalters zum Ein- und Ausschalten der Taschenlampe sowie die möglichen Ausbildungen einer Vorsatzoptik, bestehend aus einer oder mehreren Linsen, nicht näher beschrieben werden. In Fig. 1 sind die unterschiedlichen Teile, die in einem Lampengehäuse 10, das im vorliegenden Fall zylindrisch ausgebildet ist, im Detail dargestellt. Die LED 11, die auf einer Platine 12 angeordnet ist, bildet zusammen mit der Vorsatzoptik 13 die wesentlichen für die Beleuchtung und die Lichtkegelausbildung erforderlichen Teile. Durch Verschiebung der Vorsatzoptik 13 gegenüber der LED 11 kann der Lichtkegel variiert werden, was grundsätzlich nach dem Stand der Technik bekannt ist. Zur staub- und wasserdichten Abschirmung ist eine Membran 14 vorgesehen, die in Fig. 3 im Detail dargestellt ist. Den vorderen Abschluss bildet der Ring 15, der, wie aus Fig. 2 besser zu erkennen ist, einen umlaufenden Innenkragen 16 besitzt, der gleichzeitig als Anschlag für die Vorsatzoptik 14 dient. Der Lampenkopf 17 wird durch einen hülsenförmigen Körper gebildet, über dessen vorderes Ende der genannte Ring 15 geschoben ist und dort eine reibschlüssige Verbindung bildet. Ein Abdeckkörper 18 mit einer Öffnung zur Durchführung der LED 11 liegt an der Platinenoberseite an. Der Abdeckkörper 18 besitzt eine hakenförmige Nase 19 als umlaufendes Teil, die in einer Nut 20 der Membran 14 formschlüssig anliegt. Die Membran besitzt an dem gegenüberliegenden Ende einen Kragen 21, der in eine Nut 22 des Rings 15 eingreift. Wie aus Fig. 2 im Detail zu erkennen, ist die Membran 14 im Lampenkopfgehäuse 17 am vorderen Rand und im hinteren Bereich über die formschlüssige Verbindung 19, 20 fixiert. Die Membran 14 ist elastisch und besitzt vorzugsweise eine Dicke von 0,6 mm. Bei einer Verschiebung der Vorsatzoptik weg von der LED 11 wird die Membran gestreckt, bei einer Rückführung in Richtung auf die LED 11 leicht gestaucht. In jedem Fall ist der Innenraum 23 zwischen der LED und der Vorsatzoptik von der Membran 14 wasser- und flüssigkeitsdicht umschlossen.Battery-operated flashlights are known in principle, so that the arrangement of the batteries or battery, the switch for switching the flashlight on and off and the possible designs of an auxiliary lens consisting of one or more lenses are not described in more detail. In Fig. 1 are the different parts that are in a lamp housing 10, which is cylindrical in the present case, shown in detail. The LED 11, which is arranged on a circuit board 12, together with the optical attachment 13, forms the essential parts required for the lighting and the formation of light cones. The light cone can be varied by shifting the optical attachment 13 with respect to the LED 11, which is basically known from the prior art. A membrane 14 is provided for dustproof and watertight shielding, which is shown in FIG Fig. 3 is shown in detail. The front end is formed by the ring 15, which, as from Fig. 2 can be seen better, has a circumferential inner collar 16, which also acts as a stop for the Ancillary optics 14 is used. The lamp head 17 is formed by a sleeve-shaped body, over the front end of which said ring 15 is pushed and forms a frictional connection there. A cover body 18 with an opening for the implementation of the LED 11 rests on the upper side of the board. The cover body 18 has a hook-shaped nose 19 as a circumferential part, which rests in a groove 20 in the membrane 14 in a form-fitting manner. At the opposite end, the membrane has a collar 21 which engages in a groove 22 in the ring 15. How out Fig. 2 As can be seen in detail, the membrane 14 is fixed in the lamp head housing 17 at the front edge and in the rear area via the form-fitting connection 19, 20. The membrane 14 is elastic and preferably has a thickness of 0.6 mm. When the optical attachment is displaced away from the LED 11, the membrane is stretched, and when it is returned in the direction of the LED 11, it is slightly compressed. In any case, the interior space 23 between the LED and the ancillary optics is enclosed by the membrane 14 in a water-tight and liquid-tight manner.

Der Abdeckkörper 18 besitzt zudem an seinem rückwärtigen Ende 4 Rasthaken 24, die in entsprechend korrespondierende Ausnehmungen 25 eines Halters 26 eingreifen. Der Halter 26 weist zwei Bohrungen auf, durch welche die Stifte 27 und 28 als Spannungsversorgung hindurch gesteckt werden können. Diese Stifte werden mit der Platine 12 über Klemmkörper fixiert. Die Stifte selbst ragen aus einer Basisplatte 29 heraus, die gegen Verdrehung gesichert im Lampengehäuse 10 gelagert ist. Der Trägerkörper wird insgesamt durch die Teile 18, 26 und 29 gebildet.The cover body 18 also has 4 latching hooks 24 at its rear end, which engage in correspondingly corresponding recesses 25 of a holder 26. The holder 26 has two bores through which the pins 27 and 28 can be inserted as a voltage supply. These pins are fixed to the circuit board 12 via clamping bodies. The pins themselves protrude from a base plate 29, which is mounted in the lamp housing 10 to prevent rotation. The support body is formed as a whole by parts 18, 26 and 29.

Der Halter 26 besitzt an seinem Außenmantel zwei vorstehende umlaufende Rippen 30, 31, die lösbar in Nuten 32, 33, 34, 35 oder 36 am Gehäuseinnenrand, nämlich dem Lampenkopf 17 eingreifen. Diese Nuten 32, 33, 34, 35 und 36 dienen in Verbindung mit den Rippen 30, 31 als Rastprofile, durch welche der Lampenkopf in Richtung des Doppelpfeiles 37 längsaxial hin und her geschoben werden kann, wobei der Lampenkopf jeweils die Vorsatzoptik 13 mitführt, wohingegen die LED mit samt dem Trägerkörper ortsfest in Bezug auf das Gehäuse 10 fixiert bleibt. Die Nuten 32 bis 36 sind äquidistant angeordnet und bilden jeweilige Einrastmöglichkeiten des Lampenkopfes.The holder 26 has two projecting circumferential ribs 30, 31 on its outer jacket, which engage releasably in grooves 32, 33, 34, 35 or 36 on the inner edge of the housing, namely the lamp head 17. These grooves 32, 33, 34, 35 and 36 serve in connection with the ribs 30, 31 as locking profiles through which the lamp head can be pushed back and forth in the direction of the double arrow 37, the lamp head in each case carrying the ancillary optics 13, whereas the LED together with the carrier body remains fixed in place with respect to the housing 10. the Grooves 32 to 36 are arranged equidistantly and form the respective latching possibilities of the lamp head.

In Fig. 4 bis 6 ist eine anders gestaltete Taschenlampenausbildung gewählt worden, bei der der Lampenkopf nicht mittels eines linearen Vorschubs gegenüber dem Gehäuse bewegt wird, sondern der Lampenkopf gegenüber dem Lampengehäuse drehbar angeordnet ist, wobei über die Drehung gleichzeitig eine Translationsbewegung des Lampenkopfes 47 und damit eine Abstandsveränderung der Vorsatzoptik 43 gegenüber der LED 41 realisierbar ist. In Fig. 4 und 5 sind das Lampengehäuse 40 und der Lampenkopf 47 drehbar miteinander verbunden. Der Lampenkopf 47 wird aufgrund der aus dem Führungsteil 50 und dem Schlitten 51 gewählten Konstruktion bei Drehung des Lampenkopfes mitsamt der Vorsatzoptik 43 so bewegt, dass sich der Abstand der Vorsatzoptik 43 von der LED 41, die auf einer Platine 42 angeordnet ist, verringert. Im vorliegenden Ausführungsbeispiel wird ein Isolator 49 benötigt, der einen Kurzschluss aufgrund der gewählten Federkontakte 46 verhindert. Die Teile 41, 42 und 47 werden durch eine Abdeckung 48 zur Lampenkopfapertur, die durch den aufgeschraubten Ring 45 bestimmt wird, abgedeckt. Auch im vorliegenden Fall und wie in einer Schnittdarstellung in Fig. 6 zu entnehmen, dient eine Membran 44 als Dichtung, die den Raum zwischen der LED und der Vorsatzoptik staub- und wasserdicht abschließt. Diese Membran 44 besitzt eine äußere Rippe 38, die in eine entsprechende Nut des Lampenkopfes eingreift. Am gegenüberliegenden Ende besitzt die Membran 44 eine ringförmige Rippe 39, welche in einer entsprechenden Nut des Halters 53 fixiert ist.In Figures 4 to 6 a differently designed flashlight design has been chosen, in which the lamp head is not moved by means of a linear feed relative to the housing, but the lamp head is arranged rotatably relative to the lamp housing, the rotation simultaneously causing a translational movement of the lamp head 47 and thus a change in the distance of the ancillary optics 43 compared to the LED 41 can be realized. In Fig. 4 and 5 the lamp housing 40 and the lamp head 47 are rotatably connected to one another. Due to the construction selected from the guide part 50 and the slide 51, the lamp head 47 is moved when the lamp head rotates together with the ancillary optics 43 so that the distance between the ancillary optics 43 and the LED 41, which is arranged on a circuit board 42, is reduced. In the present exemplary embodiment, an insulator 49 is required which prevents a short circuit due to the selected spring contacts 46. The parts 41, 42 and 47 are covered by a cover 48 to the lamp head aperture, which is determined by the ring 45 screwed on. Also in the present case and as in a sectional view in Fig. 6 As can be seen, a membrane 44 serves as a seal, which seals off the space between the LED and the ancillary optics in a dust-tight and watertight manner. This membrane 44 has an outer rib 38 which engages in a corresponding groove in the lamp head. At the opposite end, the membrane 44 has an annular rib 39 which is fixed in a corresponding groove in the holder 53.

Die Membran 44 ist als "Rotationsbalg" ausgebildet, bei der jedoch auf spitzwinklige Scheitellinien wie bei Rotationsfaltenbälgen bekannt, verzichtet worden ist, um einen überhöhten Verschleiß zu vermeiden. Um den Rückstellmoment der Membran 44 nach entsprechender Drehung entgegenzuwirken, wird zusätzlich ein O-Ring 52 verwendet. Der Schlitten 51 wird mittels Rasthaken im Lampenkopf befestigt, so dass dieser Schlitten den gesamten Lampenkopf im Führungsteil, das vorzugsweise drei Führungsnuten zur Führung des Schlittens besitzt, bewegen kann.The membrane 44 is designed as a "rotary bellows", in which, however, acute-angled apex lines, as is known in the case of rotary bellows, have been dispensed with in order to avoid excessive wear. In order to counteract the restoring torque of the diaphragm 44 after a corresponding rotation, an O-ring 52 is also used. The slide 51 is fastened in the lamp head by means of locking hooks, so that this slide can move the entire lamp head in the guide part, which preferably has three guide grooves for guiding the slide.

Claims (9)

  1. Flashlight with a housing (10) in which at least one LED (11) fastened on a carrier body and an attachment optics (13) are arranged, which can be displaced relative to one another in order to focus the emitted light cone, characterized in that
    a seal consisting of a membrane (14, 44) seals the space (23) between the LED (11, 41) and the attachment optics (13, 43) in a dust- and water-tight manner, whereby the seal (14, 44) has a collar (21) or a rib (38) on the upper edge, which between the attachment optics (13) and the housing, preferably in an on the housing inner wall machined groove (21) is clamped and/or whereby either the lower edge of the seal (14) is connected to an annular body in which the seal inside facing surface a groove (20) is embedded, which forms with a hook-shaped nose (19) of the carrier body (18) a positive locking connection or that the seal (44) on an inner jacket in the lower region has an annular rib (39) which engages in a groove of the carrier body (53).
  2. Flashlight according to claim 1, characterized in that the seal (14, 44) consists of an elastic material, preferably silicone rubber or natural rubber.
  3. Flashlight according to claim 1, characterized in that the seal (14), preferably the silicone rubber has a thickness of 0.5 mm to 0.7 mm.
  4. Flashlight according to claim 1, characterized in that the collar (21), the seal (14) and the ring body form an integral part.
  5. Flashlight according to one of claims 1 to 4, characterized in that the carrier body is constructed in several parts and has the following parts:
    - a circuit board carrying the LED with voltageconnections,
    - two clamping elements for fixing the board to pins that are used for
    - power supply and project from a base plate secured against rotation in the lamp housing,
    - a holder with holes to lead the pins through and
    - a front cover body which has a front opening for the LED and rearwardly projecting latching hooks which engage in corresponding recesses of the holder, preferably with the formation of a latching connection.
  6. Flashlight according to one of claims 1 to 5, characterized in that the carrier body has at least two on its outer jacket protruding, preferably circumferential ribs (30, 31) which detachably engage in grooves (32, 33, 34, 35, 36) on the inner jacket of the housing.
  7. Torch according to claim 6, characterized in that several circumferential grooves (32, 33, 34, 35,36) spaced apart from one another are provided on the housing inner jacket, which act as latching profiles for the ribs (30, 31) on the carrier outer jacket to define different longitudinally axial positions of the LED - carrier (18) in relation to the attachment optics (13).
  8. Flashlight according to one of claims 1 to 7, characterized in that the attachment optics is arranged and fastened in a longitudinally displaceable lamp head, whereas the carrier body of the LED is stationary in the lamp housing arranged.
  9. Flashlight according to one of claims 1 to 8, characterized in that the lamp head is firmly connected to the attachment optics and that the lamp head is longitudinally displaceable by relative rotation by means of a helical guide with respect to the lamp housing, wherein preferably to avoid reset forces that may arise due to light twist of the seal, an O-ring seal is provided.
EP18815935.4A 2017-12-01 2018-11-14 Flashlight Active EP3717826B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL18815935T PL3717826T3 (en) 2017-12-01 2018-11-14 Flashlight

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102017128583.0A DE102017128583A1 (en) 2017-12-01 2017-12-01 flashlight
PCT/DE2018/100925 WO2019105503A1 (en) 2017-12-01 2018-11-14 Torch

Publications (2)

Publication Number Publication Date
EP3717826A1 EP3717826A1 (en) 2020-10-07
EP3717826B1 true EP3717826B1 (en) 2021-12-22

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EP18815935.4A Active EP3717826B1 (en) 2017-12-01 2018-11-14 Flashlight

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US (1) US11236900B2 (en)
EP (1) EP3717826B1 (en)
JP (1) JP7179847B2 (en)
CN (1) CN111344516B (en)
DE (1) DE102017128583A1 (en)
DK (1) DK3717826T3 (en)
ES (1) ES2907087T3 (en)
PL (1) PL3717826T3 (en)
WO (1) WO2019105503A1 (en)

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7175299B2 (en) * 2005-05-10 2007-02-13 Alan Uke Multi-lens zoom system and method for flashlights
TWM345186U (en) * 2008-07-01 2008-11-21 Genius Electronic Optical Co Ltd Focusing lamp
US9247598B2 (en) * 2009-01-16 2016-01-26 Mag Instrument, Inc. Portable lighting devices
CN201621474U (en) * 2009-12-08 2010-11-03 王永增 LED lens torch
US20110182059A1 (en) * 2010-01-25 2011-07-28 Yun-Zhao Liu Floatable diving torch
DE102010031816A1 (en) 2010-07-21 2012-01-26 Zweibrüder Optoelectronics Gmbh & Co. Kg Waterproof flashlight
KR101186838B1 (en) * 2011-02-22 2012-10-02 골드파인(주) Waterproof flashlight
US20120218744A1 (en) * 2011-02-25 2012-08-30 Xglow P/T, Llc Flashlight with light focusing system
CN202835204U (en) * 2012-07-30 2013-03-27 王建春 Automatic focusing structure for lamp and flashlight employing automatic focusing structure
CN103335219B (en) * 2013-06-17 2016-01-13 宁波协生照明工业有限公司 Full-automatic telescopic focus flashlight
CN203784651U (en) * 2014-03-28 2014-08-20 曹华平 Flashlight with focusing function
DE202016101541U1 (en) 2016-03-22 2016-06-03 Zweibrüder Optoelectronics Gmbh & Co. Kg Flashlight with magnetic regulator

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DK3717826T3 (en) 2022-03-21
US20200300453A1 (en) 2020-09-24
US11236900B2 (en) 2022-02-01
PL3717826T3 (en) 2022-04-04
JP2021504894A (en) 2021-02-15
ES2907087T3 (en) 2022-04-21
WO2019105503A1 (en) 2019-06-06
EP3717826A1 (en) 2020-10-07
DE102017128583A1 (en) 2019-06-06
CN111344516A (en) 2020-06-26
CN111344516B (en) 2023-03-03
JP7179847B2 (en) 2022-11-29

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