EP2202445A1 - Elektrische LED-Beleuchtungsvorrichtung und Lampe mit einer Vielzahl solcher LED-Vorrichtungen - Google Patents

Elektrische LED-Beleuchtungsvorrichtung und Lampe mit einer Vielzahl solcher LED-Vorrichtungen Download PDF

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Publication number
EP2202445A1
EP2202445A1 EP08022376A EP08022376A EP2202445A1 EP 2202445 A1 EP2202445 A1 EP 2202445A1 EP 08022376 A EP08022376 A EP 08022376A EP 08022376 A EP08022376 A EP 08022376A EP 2202445 A1 EP2202445 A1 EP 2202445A1
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EP
European Patent Office
Prior art keywords
light source
led
waveguide
legs
resin
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.)
Withdrawn
Application number
EP08022376A
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English (en)
French (fr)
Inventor
Tao Lin
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to EP08022376A priority Critical patent/EP2202445A1/de
Publication of EP2202445A1 publication Critical patent/EP2202445A1/de
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • F21V17/00—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages
    • F21V17/10—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages characterised by specific fastening means or way of fastening
    • F21V17/101—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages characterised by specific fastening means or way of fastening permanently, e.g. welding, gluing or riveting
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21K—NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
    • F21K9/00—Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21K—NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
    • F21K9/00—Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
    • F21K9/60—Optical arrangements integrated in the light source, e.g. for improving the colour rendering index or the light extraction
    • F21K9/61—Optical arrangements integrated in the light source, e.g. for improving the colour rendering index or the light extraction using light guides
    • 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
    • F21V17/00—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages
    • F21V17/005—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages with keying means, i.e. for enabling the assembling of component parts in distinctive positions, e.g. for preventing wrong mounting
    • 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
    • F21V5/00—Refractors for light sources
    • F21V5/04—Refractors for light sources of lens shape
    • 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
    • F21V17/00—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages
    • F21V17/06—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages the fastening being onto or by the lampholder
    • 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
    • F21Y2107/00—Light sources with three-dimensionally disposed light-generating elements
    • F21Y2107/10—Light sources with three-dimensionally disposed light-generating elements on concave supports or substrates, e.g. on the inner side of bowl-shaped supports
    • 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 present invention refers to an LED lighting electric device comprising:
  • LEDs are powered by means of a suitable electronic circuit and their light is generated by a physical process called "Electron-hole recombination" that results in the emission of light particles, in other words photons.
  • the average life of an LED is estimated to be tens of times greater than most light bulbs or discharge lamps that, in optimal conditions of continuous use, can respectively reach a maximum of 2000 or 7000 hours of operation. LEDs, on the other hand, can ideally last 50,000 hours or more.
  • LEDs consume much less electrical energy and can play a fundamental role in the reduction of the costs linked to electrical energy consumption.
  • LEDs are still relatively expensive, set to fall in the future as they are used more extensively, but LED lighting can already offer savings in the medium and long term thanks to their lower consumption, their greater lifetime and their very low maintenance.
  • LEDs are normally used in lamps or lighting apparatuses that include a plurality of LED light sources and corresponding lighting bodies that can comprise a waveguide or reflector of the light beam produced by the LED and a lens crossed by such a light beam.
  • Lighting apparatuses of various shapes and sizes are known in which the aforementioned LED light sources and the corresponding lighting bodies are suitably positioned and orientated to obtain a predetermined size of lit area or else a predetermined lighting intensity. It is also known to equip these lighting apparatuses with groups of LED light sources having different lighting powers to one another.
  • the intensity of the light beam generated by the LED sources and by the corresponding diffusing lighting bodies is not yet satisfactory in terms of energy efficiency and of size of area lit. More specifically, the transparent support legs of the diffusing lighting bodies associated with each LED take away part of the light beam generated.
  • the standard thermal operating conditions of LED lighting apparatuses is close to 70° on the lighting body and it is obviously at an even higher temperature on the LED source reducing the overall useful life of the source.
  • These relatively high standard thermal conditions also oblige the use of metal casings and supports for such lighting apparatuses.
  • the technical problem forming the basis of the present invention is to device a new structure of LED lighting electric device having structural and functional characteristics such as to overcome the aforementioned drawbacks with reference to the prior art.
  • the aforementioned resin is a silicon epoxy resin with high heat conduction.
  • part of the heat produced by the LED light source is taken away through the silicon resin reducing the standard thermal conditions of the lighting device.
  • an LED lighting electric device made according to the present invention is globally and schematically indicated with 1.
  • the device 1 can also be defined as an LED lamp associated with a diffusing optical element of the light beam produced by the lamp.
  • the device 1 is particularly suitable for being used in the field of civil or industrial lighting technology.
  • bulbs or lights including a plurality of devices 1 can be installed inside or outside, i.e. indoors or outdoors, in homes, offices, shops or warehouses, or else they can be used for public uses like for example street lighting or lighting for public places in general (gyms, schools, hospitals, etc.).
  • the LED lighting electric device 1 comprising at least one LED (Light Emitter Diode) light source 2 based upon a light emitting semiconductor diode.
  • LED Light Emitter Diode
  • the specific type of LED light source 2 is not covered by the present invention in the sense that the source 2 can be a single diode or a multichip LED formed from at least three diodes.
  • Multichip leds are formed from three diodes - a red one, a blue one and a green one - that when suitably controlled can create thousands of colour combinations.
  • the device 1 comprises at least one LED light source 2 mounted and powered on a support plate 15.
  • the LED is a primary optical system that is mounted on a primary reflector, for example a metallic layer, which is fixedly connected to a printed circuit board.
  • the LED light source 2 has an associated waveguide 3 that acts as a diffusing lighting body intended to transmit, direct and diffuse the light beam generated by the light source 2.
  • the waveguide 3 has an essentially inverted truncated cone shaped structure extending with the smaller base at the LED light source 2 and the larger base distal from the LED source 2.
  • the larger base is substantially formed from an optical element intended to interact with a light beam emitted by the LED.
  • the larger base of the waveguide 3 comprises a lens 4 arranged in a predetermined spaced apart relationship from the LED light source 2 in a position substantially perpendicular to the main lighting direction of the light source 2.
  • the lens 4 allows the light beam emitted by the LED light source 2 to be focused keeping it within a predetermined emission angle with the minimum dispersion.
  • the inverted truncated cone shape of the waveguide 3 has the function of directing and diffusing the light beam emitted by the LED onto the lens 4 operating substantially as a diffusing body of the light beam.
  • legs 5 are provided formed in one piece with the waveguide and extending around said light source 2. In some other embodiments the legs 5 are formed in one piece around the perimeter of the lens 4.
  • legs 5 there are four of such legs 5 and they extend parallel to one another around the light source 2.
  • the legs 5 are arranged in equally angularly spaced position, 90° apart, around the waveguide 3.
  • the legs 5 have an end formed in one piece with the waveguide 3, at the lens 4, and have the opposite base or foot ends fixedly connected to the support plate 15 of the light source 2.
  • the legs 5 are small cylindrical transparent columns, slightly tapered towards their base, and having a base end portion 7 fixed to the support card 15 around the light source 2.
  • the base end portions 7 have a smaller diameter than the average diameter of the column-shaped legs 5 to each be inserted with pressure in a corresponding hole 8 formed in the plate 15 around the light source 2.
  • the waveguide 3 and the corresponding support legs 5, formed in one piece, are made from a transparent synthetic plastic material, for example a polycarbonate.
  • the lens 4 can also be formed in one piece with the waveguide 3 as larger base of the truncated cone shaped body.
  • the lens 4 can be fixedly connected as the larger base of the waveguide 3 shaped like a truncated cone.
  • the lens 4 may be missing.
  • the lens 4 can be simply a transparent layer, in the shape of a circular crown with a central through hole.
  • the lens 4 can also have a more complex structure, for example with a pair of surfaces arranged parallel to one another a predetermined distance apart, a flat surface facing towards the light source 2 and another prism shaped outer surface.
  • prism shaped surface we mean to define a surface that has a plurality of prism shaped elements adjacent to one another and equipped with inclined portions 4a or facetings 4b such as to be able to create phenomena of reflection, refraction, diffraction or polarisation of the light beam that passes through the lens 4.
  • the aforementioned prism shaped elements can be right pyramids or frustums of right pyramid brought close together and having the base parallel to the first flat surface.
  • the base ends 7 of said legs 5 are in contact with a resin 9 that does not absorb light radiation.
  • the ends of the legs 5 be covered or in any case darkened by the resin 9 so that the light radiation channelling along the small transparent columns is unable to leave by the base.
  • the base ends 7 of the legs 5 are embedded in the resin 9 on the opposite side of the plate 15 with respect to where the light source 2 is located.
  • the resin 9 is a silicon resin that is a good heat conductor.
  • the resin 9 is an epoxy resin that lends itself to being shaped through injection moulding.
  • the resin 9 can be of the type commercially known by the trade name FT0610 that defines a specific resin for insulating, sealing and protecting electrical transformers.
  • this epoxy resin FT0610 offers excellent heat dissipation.
  • the presence of the resin 9 on the base ends 7 of the transparent support legs 5 of the waveguide 3 allows the light radiation emitted by the source 2 and diffused by the waveguide 3 not to be attenuated or damped in its intensity by the presence of the transparent legs 5.
  • the light beam that crosses the legs 5 in the opposite direction i.e. in the direction of the source, with respect to the desired and main direction of emission of the beam itself, finds its path blocked by the silicon resin 9.
  • the transparent support legs 5 of the waveguide 3 do not in any way take away light from the main light beam emitted by the source 2 and do not contribute to reducing the light intensity of the source 2.
  • each of the transparent legs 5 has no way to pass or be absorbed at the ends thereof located near to the source 2 and it reaches a state of saturation that prevents other arriving light from passing back through the small transparent column.
  • the electromagnetic light wave that passes through the transparent support legs 5 of the waveguide 3 reaches the ends 7 coated with resin 9 and saturates the corresponding transparent leg with light.
  • This configuration of the device 1 according to the invention achieves a further important advantage represented by the fact that the silicon resin 9 takes away the heat produced at the base of the LED light source 2 and thus allows full performance operating conditions to be reached that substantially coincide with those theoretically foreseen for the regular and correct operation of a semiconductor LED.
  • the operating temperature at the base of the LED is around 45°C whereas that of the light source is around 70°C, which represents the optimal theoretical combination of operation for a semiconductor LED.
  • the LED lighting electric device can be used to make LED headlights or lamps in general by associating them together and feeding power, for example in parallel, to a plurality of devices 1 in the same lighting apparatus.
  • figure 3 schematically illustrates a lighting apparatus 10 including a plurality of LED lighting electric devices 1 according to the present invention.
  • the apparatus 10 is substantially a headlight having an essentially open truncated cone shaped framework 11 with the smaller base 13 plate-shaped and substantially round and the larger base 14 open to give access to an inner cavity 12 in which the lighting devices 1 are housed, to all face towards an area to be lit when the apparatus 10 is installed.
  • the apparatus 10 can be made through a parabola or spherical cap-shaped framework in which the LED lighting devices are mounted in the concavity of the parabola or of the spherical cap.
  • the shape of the framework of the lighting apparatus can be whatever; what cunts is that the lighting devices can be mounted in the cavity 12 of the framework of the lighting apparatus with the electrical connections going to each light source 2 arranged on the opposite side with respect to the cavity 12, in other words on the outer surface of the framework 11.
  • the outer surface of the framework 11 comprises a plurality of plate-shaped portions 16, essentially shaped like an elongated isosceles trapezium, adjacent to one another along a longer oblique side of the trapezium shape to form, as a plurality of trapezium shaped sectors, the inclined or oblique walls of the truncated cone shape and all joined in their shorter round base side 13 of the truncated cone shaped framework 11.
  • portions 16 there can be sixteen or twenty portions 16 according to the configuration requirements of the framework 11, both in terms of area covered, and in terms of inclination of the oblique side wall. However, there is no reason why a greater or smaller number of portions 16 should not be used, just as there is nothing to stop such portions 16 being suitably sized so as to modulate the size of their larger and smaller bases and of the oblique sides.
  • the larger base sides of the trapezium shaped portions 16 are joined with an annular edge portion 17 of the lighting apparatus 10.
  • Conventional fastening means 18 to hang or fasten the lighting apparatus 10 to a support or to a wall or ceiling are provided on such an annular edge 17.
  • the portions 16 are intended to house a plurality of LED lighting devices 1, arranged in an orderly fashion.
  • the surface facing towards the cavity 12 of the round smaller base 13 of the framework 11 is in turn also intended to receive a predetermined group of LED lighting devices 1.
  • the smaller base 13 is structured substantially like the support card 15 of the light source 2, in the sense that some light sources 2 are mounted and fed with power on it, associated with the respective waveguides 3.
  • Each light source 2 is encircled by a group of through holes 8 through the base 13 and intended to receive the respective base ends 7 of the support legs 5 of each waveguide 3.
  • each light source there are preferably four holes 8, angularly spaced apart by 90°, each intended to receive, by coupling or by pressure, a corresponding base end 7 of a transparent leg 5.
  • holes 8 are identifiable or groupable in homogeneous groups 20 of four holes each, corresponding to the support legs 5 of the same waveguide 3 associated with a given light source 2.
  • Each sector 16 has at least six groups 20 of four holes, whereas the smaller base 13 has ten groups 20 of four holes.
  • each group 20 of four holes is defined by a side wall 21 for containing said silicon epoxy resin.
  • the side walls 21 form substantially a square edge around the holes 8 associated with the support legs 5 of the waveguide 3 of each LED lighting device 1.
  • a plate that can be represented by the smaller base 13 or by any of the portions 16 with trapezium shaped sector, side walls 21 for containing the silicon resin placed in contact with the base ends 7 of the supports of the waveguides 3 are foreseen.
  • the resin that does not absorb light radiation through injection moulding occupies the space enclosed and defined by the quadrangular side walls 21.
  • the injection is carried out according to per sé conventional ways.
  • the base ends 7 of the legs 7, forcibly inserted into the holes 8 and projecting on the rear of the support plates, be they 13 or 16, are coated and substantially embedded inside the layer of resin that has occupied each square portions defined by the side walls 21.
  • the method for making the lighting apparatus 10 substantially coincides with the method for making even just one of the LED lighting electric devices 1.
  • a layer of resin that does not absorb light radiation is deposited on the rear of the support plate 15 of the light source 2 .
  • the silicon resin is an epoxy resin, it lends itself to being deposited through an injection moulding technique that can cover the rest of the support plate 15 or a portion thereof, for example a portion that through the side wall 21 defines a homogeneous group of holes 8 through which the base ends 7 of the support legs 5 of the waveguide 3 are fixed.
  • the lighting device 1 according to the invention can be made with relatively small investments by providing side walls for containing the resin associated with each lighting device on the rear of the support plate of the corresponding LED light source.
  • the epoxy resin that is injected into the areas defined by the side walls 21 contributes to firmly fixing the support legs of the waveguides 3 and also covers the electrical connections that go to each semiconductor LED of each light source 2.
  • each LED lighting device 1 has been fixedly connected with the lighting apparatus and, at the same time, takes advantage of the heat dissipating effect carried out by the silicon epoxy resin that greatly contributes to keeping a constant and optimal standard thermal conditions during operation, in other words while the lamp is on.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Optics & Photonics (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
EP08022376A 2008-12-23 2008-12-23 Elektrische LED-Beleuchtungsvorrichtung und Lampe mit einer Vielzahl solcher LED-Vorrichtungen Withdrawn EP2202445A1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP08022376A EP2202445A1 (de) 2008-12-23 2008-12-23 Elektrische LED-Beleuchtungsvorrichtung und Lampe mit einer Vielzahl solcher LED-Vorrichtungen

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP08022376A EP2202445A1 (de) 2008-12-23 2008-12-23 Elektrische LED-Beleuchtungsvorrichtung und Lampe mit einer Vielzahl solcher LED-Vorrichtungen

Publications (1)

Publication Number Publication Date
EP2202445A1 true EP2202445A1 (de) 2010-06-30

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP08022376A Withdrawn EP2202445A1 (de) 2008-12-23 2008-12-23 Elektrische LED-Beleuchtungsvorrichtung und Lampe mit einer Vielzahl solcher LED-Vorrichtungen

Country Status (1)

Country Link
EP (1) EP2202445A1 (de)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103604093A (zh) * 2012-07-20 2014-02-26 黄超 一种具备防水功能的led灯珠用透镜
US20160161099A1 (en) * 2011-08-09 2016-06-09 Lg Innotek Co., Ltd. Lighting device
CN106662702A (zh) * 2014-07-16 2017-05-10 Bsh家用电器有限公司 显示装置和具有这样的显示装置的家用器具
WO2019032944A1 (en) * 2017-08-10 2019-02-14 Archangel Device Llc SAFETY LAMP
EP2503216B1 (de) * 2009-11-17 2021-04-14 Enplas Corporation Oberflächenlichtemittierende einheit und anzeigevorrichtung damit
US11739928B2 (en) 2017-08-10 2023-08-29 Archangel Device Llc Safety light
USD1115104S1 (en) 2018-08-10 2026-02-24 Archangel Device Llc Lighting device

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5526190A (en) * 1994-09-29 1996-06-11 Xerox Corporation Optical element and device for providing uniform irradiance of a surface
WO2003048637A1 (en) * 2001-12-06 2003-06-12 Fraen Corporation S.R.L. High-heat-dissipation lighting module
DE10317999A1 (de) * 2003-04-23 2004-11-11 Isolde Scharf LED-Rundumkennleuchte
JP2007317573A (ja) * 2006-05-26 2007-12-06 Matsushita Electric Works Ltd Ｌｅｄ点灯ユニット及びそれを用いた照明器具

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5526190A (en) * 1994-09-29 1996-06-11 Xerox Corporation Optical element and device for providing uniform irradiance of a surface
WO2003048637A1 (en) * 2001-12-06 2003-06-12 Fraen Corporation S.R.L. High-heat-dissipation lighting module
DE10317999A1 (de) * 2003-04-23 2004-11-11 Isolde Scharf LED-Rundumkennleuchte
JP2007317573A (ja) * 2006-05-26 2007-12-06 Matsushita Electric Works Ltd Ｌｅｄ点灯ユニット及びそれを用いた照明器具

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2503216B1 (de) * 2009-11-17 2021-04-14 Enplas Corporation Oberflächenlichtemittierende einheit und anzeigevorrichtung damit
US20160161099A1 (en) * 2011-08-09 2016-06-09 Lg Innotek Co., Ltd. Lighting device
US10006620B2 (en) * 2011-08-09 2018-06-26 Lg Innotek Co., Ltd. Lighting device
CN103604093A (zh) * 2012-07-20 2014-02-26 黄超 一种具备防水功能的led灯珠用透镜
CN103604093B (zh) * 2012-07-20 2016-02-17 黄超 一种具备防水功能的led灯珠用透镜
CN106662702A (zh) * 2014-07-16 2017-05-10 Bsh家用电器有限公司 显示装置和具有这样的显示装置的家用器具
CN109386756A (zh) * 2017-08-10 2019-02-26 阿驰安吉设备有限责任公司 安全灯
US10976046B2 (en) 2017-08-10 2021-04-13 Archangel Device Llc Safety light
WO2019032944A1 (en) * 2017-08-10 2019-02-14 Archangel Device Llc SAFETY LAMP
US11397002B2 (en) 2017-08-10 2022-07-26 Archangel Device Llc Safety light
TWI787321B (zh) * 2017-08-10 2022-12-21 美商大天使裝置有限責任公司 安全燈具
US11739928B2 (en) 2017-08-10 2023-08-29 Archangel Device Llc Safety light
US12066178B2 (en) 2017-08-10 2024-08-20 Archangel Device Llc System and method for portable, safety lighting
US12297993B2 (en) 2017-08-10 2025-05-13 Archangel Device Llc System and method for portable, safety lighting
USD1115104S1 (en) 2018-08-10 2026-02-24 Archangel Device Llc Lighting device

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