EP3620866B1 - Dispositif d'eclairage actif portable au poignet d'une personne - Google Patents

Dispositif d'eclairage actif portable au poignet d'une personne Download PDF

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Publication number
EP3620866B1
EP3620866B1 EP18192468.9A EP18192468A EP3620866B1 EP 3620866 B1 EP3620866 B1 EP 3620866B1 EP 18192468 A EP18192468 A EP 18192468A EP 3620866 B1 EP3620866 B1 EP 3620866B1
Authority
EP
European Patent Office
Prior art keywords
light sources
lighting device
control unit
light
activated
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
EP18192468.9A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP3620866A1 (fr
Inventor
Olivier Matthey
Michel Willemin
Bruno Scagliarini
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.)
Swatch Group Research and Development SA
Original Assignee
Swatch Group Research and Development SA
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 Swatch Group Research and Development SA filed Critical Swatch Group Research and Development SA
Priority to EP18192468.9A priority Critical patent/EP3620866B1/fr
Priority to US16/524,391 priority patent/US10895851B2/en
Priority to JP2019152643A priority patent/JP6711951B2/ja
Priority to CN201910827878.5A priority patent/CN110873294B/zh
Publication of EP3620866A1 publication Critical patent/EP3620866A1/fr
Application granted granted Critical
Publication of EP3620866B1 publication Critical patent/EP3620866B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • G—PHYSICS
    • G04—HOROLOGY
    • G04G—ELECTRONIC TIME-PIECES
    • G04G9/00—Visual time or date indication means
    • G04G9/0023—Visual time or date indication means by light valves in general
    • G04G9/0029—Details
    • G04G9/0035—Details constructional
    • G04G9/0041—Illumination devices
    • 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
    • F21L4/02—Electric lighting devices with self-contained electric batteries or cells characterised by the provision of two or more 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
    • F21V23/00—Arrangement of electric circuit elements in or on lighting devices
    • F21V23/04—Arrangement of electric circuit elements in or on lighting devices the elements being switches
    • F21V23/0442—Arrangement of electric circuit elements in or on lighting devices the elements being switches activated by means of a sensor, e.g. motion or photodetectors
    • 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
    • F21V23/00—Arrangement of electric circuit elements in or on lighting devices
    • F21V23/04—Arrangement of electric circuit elements in or on lighting devices the elements being switches
    • F21V23/0442—Arrangement of electric circuit elements in or on lighting devices the elements being switches activated by means of a sensor, e.g. motion or photodetectors
    • F21V23/0492—Arrangement of electric circuit elements in or on lighting devices the elements being switches activated by means of a sensor, e.g. motion or photodetectors the sensor detecting a change in orientation, a movement or an acceleration of the lighting device, e.g. a tilt switch
    • 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
    • F21V33/00—Structural combinations of lighting devices with other articles, not otherwise provided for
    • F21V33/0004—Personal or domestic articles
    • G—PHYSICS
    • G04—HOROLOGY
    • G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B47/00—Time-pieces combined with other articles which do not interfere with the running or the time-keeping of the time-piece
    • G—PHYSICS
    • G04—HOROLOGY
    • G04G—ELECTRONIC TIME-PIECES
    • G04G17/00—Structural details; Housings
    • G04G17/08—Housings
    • G—PHYSICS
    • G04—HOROLOGY
    • G04G—ELECTRONIC TIME-PIECES
    • G04G21/00—Input or output devices integrated in time-pieces
    • G04G21/02—Detectors of external physical values, e.g. temperature
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
    • F21W2121/00—Use or application of lighting devices or systems for decorative purposes, not provided for in codes F21W2102/00 – F21W2107/00
    • F21W2121/06—Use or application of lighting devices or systems for decorative purposes, not provided for in codes F21W2102/00 – F21W2107/00 for personal wear
    • 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
    • F21Y2103/00—Elongate light sources, e.g. fluorescent tubes
    • F21Y2103/30—Elongate light sources, e.g. fluorescent tubes curved
    • 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
    • F21Y2113/00—Combination of light sources
    • F21Y2113/10—Combination of light sources of different colours
    • F21Y2113/13—Combination of light sources of different colours comprising an assembly of point-like light sources
    • 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 an active lighting device portable to a person's wrist, in particular for illuminating a path taken when ambient light is insufficient.
  • the portable active lighting device may be in the form of an electronic or electromechanical watch, or of a bracelet with electronic components.
  • a portable lighting device with a suitable adjustment of the intensity of the light generated by one or more light sources.
  • a lighting device can also be used for a walk or a run in the dark.
  • Such a lighting device can be arranged for example on the head of a person and switched on manually when walking or running in the dark.
  • the object of the invention is therefore to overcome the drawbacks mentioned above to produce an active lighting device portable to the wrist of a person easy to use and without complications to allow good lighting of a path taken by the person. while taking into account the movement of the person's wrist.
  • the invention relates to a portable active lighting device placed on the wrist of a person, which comprises the features of independent claim 1.
  • An advantage of the lighting device according to the invention lies in the fact that the lighting device in use makes it possible to maintain the same direction of the light generated by the first light sources in order to illuminate a path to be followed by a person wearing the lighting device.
  • the first light sources are selected by a control unit on the basis of measurements from a movement sensor so as not to follow the movement of the person's wrist when walking or running for keep an illumination always in the same forward direction.
  • second light sources can be provided, which are arranged in the lighting device to generate illumination towards the rear and of a color other than illumination towards the rear. front to signal the presence of the person using the lighting device to vehicles or other people coming from behind.
  • the lighting device may be in the form of a wristwatch, or even only a wristband with electronic components.
  • the light sources can be mounted on a portion of the case, for example on a watch bezel to each generate, once activated, a beam of light in a radial direction towards the outside of the case. , that is to say substantially in a direction parallel to a dial and perpendicular to a caseband of the case.
  • Each beam of light from one activated light source is from a different direction from another activated light source.
  • a selection of light sources to be activated is managed by a control unit based on measurements from at least one motion sensor, such as a magnetometer or an accelerometer.
  • the lighting device can advantageously be in the form of a wristwatch or a bracelet with electronic components.
  • the configuration of the lighting device is of a shape identical to that of a wristwatch with a case, a glass closing the top of the case to view information on a dial or a liquid crystal display, and a one or two strand bracelet connected to the case for placing the lighting device around a person's wrist.
  • the figure 1 shows in a simplified manner the various main components of a portable active lighting device 1 to be placed on the wrist of a person according to the invention.
  • the lighting device 1 is in the form of a wristwatch with at least one case connected by a bracelet with one or two strands, or a bracelet with electronic components.
  • the lighting device 1 can also be a wristwatch as explained in figures 2 to 4 .
  • the lighting device 1 comprises at least one movement sensor 3, 4 connected to a control unit 2, and at least first light sources 5 connected to the control unit 2.
  • the control unit 2 is connected to a DC power source not shown.
  • the power supply is preferably a DC voltage source, which comes from a rechargeable or primary battery, or which is extracted and rectified from received electromagnetic radiation.
  • the lighting device 1 can be activated manually by the action of a switch button or a tactile key on the housing or the glass closing the housing, as explained below with reference to figures 2 and 3 .
  • the first light sources 5 can be placed on the middle part of the case closed by a glass, or on a bezel fixed on the middle part of the case as explained below. after with reference to figures 2 and 3 .
  • the lighting device 1 can also include second light sources 6 connected to the control unit 2. These second light sources can also be placed on the middle part of the case, for example of the watch case closed by a glass, or on a bezel attached to the middle of the case.
  • the first light sources 5 are provided to generate, once activated, each a beam of light with a different orientation from each other light source. Thus, this allows the control unit 2 to automatically select on the basis of measurements from the motion sensor 3, 4 certain first light sources 5 so as to keep an illumination L1 of the path followed by the person wearing the device 1 d lighting always in the same direction. The selection of the first light sources 5 depends on the movement of the wrist of the person wearing the lighting device 1 to illuminate the path to be followed in the same forward direction despite the movement of the wrist.
  • the second light sources 6 are also provided to generate, once activated, each a beam of light with a different orientation from each other light source.
  • the control unit 2 also automatically selects based on measurements from the motion sensor 3, 4 certain second light sources 6 to generate an L2 illumination opposite to the L1 illumination while keeping the L2 illumination in the same opposite direction. to L1 illumination.
  • the illumination L1 of the first light sources 5 of a different color from the illumination L2 of the seconds. light sources 6.
  • the illumination L1 for illuminating towards the front of the person wearing said illumination device 1 may be white light
  • the illumination L2 for providing light towards the rear in order to signal the presence of the person on a walking or running path can be a red light.
  • the second light sources 6 can also be controlled by the control unit 2 so as to provide a second flashing illumination L2 of red color. This makes it possible to generate more visibility to signal the presence of the person using the lighting device to vehicles or other people coming from behind, and further reduces the power consumption.
  • first two-color light sources 5 there are no second light sources 6, but the first light sources must be selected by the control unit.
  • the second L2 illumination can also be flashing.
  • Each first or second light source can be a light-emitting diode LED, or even a combination of two light-emitting diodes LED mounted for example head-to-tail for on the one hand to provide a light beam of a first color during a direct polarization or d 'a second color different from the first color on reverse bias.
  • the lighting device 1 can include two motion sensors, such as a magnetometer 3 and an accelerometer 4 to supply measurement signals to the control unit 2.
  • the magnetometer 3 and the accelerometer 4 can be of the triaxial type.
  • Said control unit 2 can also include at least one memory 21 for storing measurements made by the movement sensor (s) 3, 4 and at least one calculation algorithm for the management and calculations of the measurements made by the sensors.
  • the control unit 2 can also include its own time base 22 such as a low frequency oscillator, which can be a clockwork quartz oscillator or MEMS, so as to clock the measurement and control operations of the first and second seconds. light sources 5, 6.
  • this control unit 2 can be a microcontroller.
  • control unit 2 once activated can take into account the initial position by at least one movement sensor 3, 4 of the wrist of the person wearing the lighting device 1. This makes it possible to initially calibrate the direction of the first illumination L1 and also that of the second illumination L2 before a walking start or for a run.
  • a direction of illumination L1 for example once calibrated, makes it possible to always have this direction of illumination L1 kept fixed whatever the movement of the wrist, which is sought to properly illuminate the path to follow in the dark.
  • control 2 In principle, there is no adjustment of the light intensity of the different activated light sources, but it is rather sought to have the maximum intensity at each illumination generated by the light sources activated by the control unit. control 2.
  • the figures 2 and 3 show an embodiment of a portable active lighting device 1 in the operating position.
  • the lighting device 1 is here a wristwatch.
  • This wristwatch 1 comprises a case with a middle part 12 closed by a back 14 with a sealing gasket 13, the case being closed by a watch glass 18 fixed by a seal 17 to a bezel 10, which itself is fixed to the middle part 12 with another sealing gasket 11. Through the watch glass 18, one can see a dial 16 and hands 20 for indicating the time in particular.
  • a bracelet 30 is connected to the middle part 12 of the case with a clip for placing the lighting device 1 on the wrist of a person using it.
  • a push-button 40 in figure 2 which is mounted through the middle part 12 to be connected to the control unit 2, is also provided for manually adjusting the time indication or for initializing and activating the lighting device 1.
  • the wristwatch 1 also comprises inside the case a watch movement or an electronic watch module 19, and the control unit 2 connected to one or two movement sensors 3, 4, which are a magnetometer 3 and an accelerometer 4 for example.
  • the control unit 2 is electrically connected to each light source 5, 6 as specified below by means of a flexible printed circuit board 15.
  • at least the first light sources 5 are placed in line. partly in cavities of the bezel 10 and opening partly towards the outside of the bezel 10, in particular in the form of a lens.
  • the first light sources 5 are arranged on or partly in the watch bezel 10, which in this case is of annular or circular shape.
  • Several first light sources 5 are provided, arranged on a portion of a circle at the periphery of the bezel 10, preferably being regularly spaced from one another.
  • the first light sources 5 can be placed on a portion of a circle which can range up to 180 ° between noon and 6 o'clock.
  • Each first light source 5 is electrically connected to the control unit 2 arranged in the watch case so as to be able to be activated as a function of measurements from the movement sensor 3, 4, which is also arranged in the watch case. .
  • Each first light source 5 can generate once activated a beam of light F shown in figure 3 running radially towards the outside of the case, that is to say substantially in a direction parallel to the dial 16 and perpendicular to the middle part 12 of the case. So every first light source 5 generates a light beam F of different orientation from another activated light source.
  • the light beam F can be in the form of a cone.
  • first illumination L1 for the generation of a first illumination L1, there are for example four first light sources 5 activated by the control unit 2 and shown in gray on the figure 2 , and defining a first illuminated sector.
  • the other first light sources 5 are inactive.
  • the control unit 2 for example four other first selected and successive light sources, to maintain the same direction of illumination L1 at an angle ⁇ with respect to the ground 50 of the path taken by the person wearing the lighting device 1.
  • the first illumination L1 is the combination of four light beams F from four activated first light sources 5.
  • the direction of illumination L1 was memorized according to an initial position of the wrist following the manual action of the push-button 40 of the figure 2 when using the lighting device 1.
  • the second light sources 6 are also disposed on or in part in the watch bezel 10 of annular or circular shape.
  • Several second light sources 6 are provided, arranged on a portion of a circle of the periphery of the bezel, preferably being regularly spaced from one another.
  • the second light sources 6 can be placed on a portion of a circle which can range up to 180 ° between 6 a.m. and midnight.
  • Each second light source 6 is electrically connected to the control unit 2 arranged in the watch case so as to be able to be activated according to measurements from the movement sensor 3, 4, which is also arranged in the watch case.
  • Each second light source 6 can generate, once activated, a beam of light directed radially towards the outside of the watch case, that is to say substantially in a direction parallel to the dial. watch and perpendicular to the middle of the case. Thus each second light source 6 generates a beam of light with a different orientation from another activated second light source.
  • the number of second light sources 6 may be equal to the number of first light sources 5 in order to generate a second illumination L2 opposite to the first illumination L1.
  • the second illumination L2 there are for example four second light sources 6 activated by the control unit 2 and shown in gray on the figure 2 and defining a second illuminated sector opposite the first illuminated sector.
  • the other second light sources 6 are inactive.
  • another selection and activation of successive second light sources 6 is carried out by the control unit 2, for example four other selected and successive second light sources, to maintain the same direction of illumination L2 at an angle ⁇ with respect to the ground 50 of the path taken by the person wearing the lighting device 1.
  • the second illumination L2 is the combination of four light beams from four activated second light sources 6.
  • the direction of illumination L2 has been memorized according to an initial position of the wrist following the manual action of the push-button 40 at the time of use of the lighting device 1.
  • the first illumination L1 may be white in color, while the second illumination L2 may be red for example.
  • each first light source 5 comprises two light-emitting diodes mounted head to tail.
  • the control unit 2 can activate on a first illuminated sector first light sources 5 generating a colored light beam. white, and on a second illuminated sector other first light sources 5 generating a light beam of red color.
  • the first light sources 5 can be arranged around the entire periphery of the bezel 10 while being partly in cavities of the bezel 10. It can also be imagined if it is also used second light sources to place them on. all around the bezel 10 above or below the first light sources 5 and coaxially. An electrical connection from every second light source to the control unit 2 can be made through the flexible printed circuit board 15, which is arranged to pass below the dial 16.
  • the figure 4 schematically shows a portable active lighting device 1 in the form of a wristwatch worn on the wrist of a person to illuminate the path taken by the person.
  • the wristwatch is worn on the wrist of the left arm B, but it may be possible to make the same wristwatch to be worn on the wrist of the right arm.
  • the first illuminations L1 and L2 initially calibrated at the start of the use of the lighting device 1, always remain in the same direction d illumination towards the front for the first illumination L1 and towards the rear for the second illumination L2. This therefore makes it possible to properly illuminate the path taken by the person wearing the lighting device 1 when walking or running on a path or a route taken.
  • first light sources 5, or even the second light sources 6 can be placed on an outer wall of the watchband 12 in figure 3 or in exterior cavities of the middle part 12, rather than on or in the bezel 10.
  • the arrangement of the light sources may be identical to that described above with reference to figures 2 and 3 .
  • the shape of the case may be different from a generally cylindrical shape, that is to say circular in top view. It can be elliptical in top view or rectangular or the like.
  • the light sources must be well oriented, for example on an edge of the middle part or on an outer wall of the middle part so as to allow a selection of light sources to be activated whatever the movement of the wrist to always have uniform illumination forward without variation.
  • the lighting device can also be a bracelet with electronic components, where the first light sources, or even the second light sources, can be mounted on the side edge of the bracelet.
  • the light sources must also be properly oriented for the generation of at least the first forward illumination without variation.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Electric Clocks (AREA)
  • Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
EP18192468.9A 2018-09-04 2018-09-04 Dispositif d'eclairage actif portable au poignet d'une personne Active EP3620866B1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP18192468.9A EP3620866B1 (fr) 2018-09-04 2018-09-04 Dispositif d'eclairage actif portable au poignet d'une personne
US16/524,391 US10895851B2 (en) 2018-09-04 2019-07-29 Active lighting device to be worn on a person's wrist
JP2019152643A JP6711951B2 (ja) 2018-09-04 2019-08-23 人の手首に着用されるアクティブ照明デバイス
CN201910827878.5A CN110873294B (zh) 2018-09-04 2019-09-03 戴在人的手腕上的有源照明设备

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP18192468.9A EP3620866B1 (fr) 2018-09-04 2018-09-04 Dispositif d'eclairage actif portable au poignet d'une personne

Publications (2)

Publication Number Publication Date
EP3620866A1 EP3620866A1 (fr) 2020-03-11
EP3620866B1 true EP3620866B1 (fr) 2021-06-30

Family

ID=63491496

Family Applications (1)

Application Number Title Priority Date Filing Date
EP18192468.9A Active EP3620866B1 (fr) 2018-09-04 2018-09-04 Dispositif d'eclairage actif portable au poignet d'une personne

Country Status (4)

Country Link
US (1) US10895851B2 (ja)
EP (1) EP3620866B1 (ja)
JP (1) JP6711951B2 (ja)
CN (1) CN110873294B (ja)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113116029A (zh) * 2021-04-07 2021-07-16 广东湾区智能终端工业设计研究院有限公司 一种可穿戴设备
US11711877B2 (en) * 2021-04-20 2023-07-25 Garmin International, Inc. Wearable device with integrated flashlight
EP4187330A1 (fr) * 2021-11-25 2023-05-31 The Swatch Group Research and Development Ltd Assemblage pour la réalisation de joints d étanchéité et procédé de fabrication de joints d étanchéité à partir de cet assemblage

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Publication number Priority date Publication date Assignee Title
US5548565A (en) 1994-09-27 1996-08-20 Mansei Kogyo Kabushiki Kaisha Timepiece device
US6213619B1 (en) 1997-10-14 2001-04-10 Sun Yu Wrist mounted light
US6565253B1 (en) * 2001-12-31 2003-05-20 The Timberland Company Watch light
US7023763B2 (en) * 2003-07-23 2006-04-04 Robert Galli Assembly and method for illuminating a watch
US20050254229A1 (en) * 2004-05-17 2005-11-17 Ali Hamade I-light
JP5758688B2 (ja) 2010-07-22 2015-08-05 ローム株式会社 照明機器
US9155168B2 (en) 2010-12-03 2015-10-06 Surefire, Llc Wearable lighting device
CN103727405B (zh) 2014-01-13 2017-12-12 深圳市朗恒电子有限公司 适用于户外运动的照明装置
FR3031567A1 (fr) * 2015-01-08 2016-07-15 Francis Beckers Dispositif d'eclairage portatif pour plongeur ou spationaute
GB201502239D0 (en) * 2015-02-11 2015-03-25 Tolley Paul S Mirror touch indicator (MTi)
CN106322166A (zh) 2015-06-15 2017-01-11 李文嵩 头部感应头灯的装置
US20170241634A1 (en) 2016-02-24 2017-08-24 Richard Almaraz Light Emitting Wrist Band Assembly
US20170364156A1 (en) * 2016-06-21 2017-12-21 Intel Corporation Gesture based feedback for wearable devices
CN205991354U (zh) * 2016-08-25 2017-03-01 深圳市拓安科技有限公司 一种佩戴式警示灯
US10208903B2 (en) 2016-10-26 2019-02-19 Ahmad Eivaz Wrist band with integrated rotatable light
US10344924B1 (en) * 2018-07-01 2019-07-09 Joseph Ganahl Multibeam lighting system

Also Published As

Publication number Publication date
EP3620866A1 (fr) 2020-03-11
CN110873294A (zh) 2020-03-10
JP6711951B2 (ja) 2020-06-17
US10895851B2 (en) 2021-01-19
JP2020038828A (ja) 2020-03-12
CN110873294B (zh) 2021-09-28
US20200073335A1 (en) 2020-03-05

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