EP3717826B1 - Taschenlampe - 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
Authority
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)
English (en)
French (fr)
Other versions
EP3717826A1 (de
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
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ledlenser GmbH and Co KG filed Critical Ledlenser GmbH and Co KG
Priority to PL18815935T priority Critical patent/PL3717826T3/pl
Publication of EP3717826A1 publication Critical patent/EP3717826A1/de
Application granted granted Critical
Publication of EP3717826B1 publication Critical patent/EP3717826B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
  • Fastening Of Light Sources Or Lamp Holders (AREA)
EP18815935.4A 2017-12-01 2018-11-14 Taschenlampe Active EP3717826B1 (de)

Priority Applications (1)

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

Applications Claiming Priority (2)

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

Publications (2)

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

Family

ID=64663991

Family Applications (1)

Application Number Title Priority Date Filing Date
EP18815935.4A Active EP3717826B1 (de) 2017-12-01 2018-11-14 Taschenlampe

Country Status (9)

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

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115956730A (zh) 2021-10-11 2023-04-14 史赛克公司 包括调整机构的外科头盔
US12281763B1 (en) * 2024-08-20 2025-04-22 Metromax America Corporation Waterproof electronic candle lamp
DE102025109027B3 (de) 2025-03-10 2026-03-12 Ledlenser GmbH & Co. KG Leuchteinheit für eine Leuchte und Leuchte

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 (zh) * 2009-12-08 2010-11-03 王永增 Led透镜电筒
US20110182059A1 (en) * 2010-01-25 2011-07-28 Yun-Zhao Liu Floatable diving torch
DE102010031816A1 (de) 2010-07-21 2012-01-26 Zweibrüder Optoelectronics Gmbh & Co. Kg Wasserdichte Taschenlampe
KR101186838B1 (ko) * 2011-02-22 2012-10-02 골드파인(주) 방수플래시라이트
US20120218744A1 (en) * 2011-02-25 2012-08-30 Xglow P/T, Llc Flashlight with light focusing system
CN202835204U (zh) * 2012-07-30 2013-03-27 王建春 灯具自动调焦结构及应用其的手电筒
CN103335219B (zh) * 2013-06-17 2016-01-13 宁波协生照明工业有限公司 全自动伸缩调焦手电筒
CN203784651U (zh) * 2014-03-28 2014-08-20 曹华平 一种调焦手电筒
DE202016101541U1 (de) 2016-03-22 2016-06-03 Zweibrüder Optoelectronics Gmbh & Co. Kg Taschenlampe mit Magnetregler

Also Published As

Publication number Publication date
WO2019105503A1 (de) 2019-06-06
JP2021504894A (ja) 2021-02-15
US20200300453A1 (en) 2020-09-24
JP7179847B2 (ja) 2022-11-29
CN111344516B (zh) 2023-03-03
US11236900B2 (en) 2022-02-01
CN111344516A (zh) 2020-06-26
DK3717826T3 (da) 2022-03-21
ES2907087T3 (es) 2022-04-21
DE102017128583A1 (de) 2019-06-06
EP3717826A1 (de) 2020-10-07
PL3717826T3 (pl) 2022-04-04

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