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WO2014202968A1 - Appareil d'éclairage - Google Patents

Appareil d'éclairage Download PDF

Info

Publication number
WO2014202968A1
WO2014202968A1 PCT/GB2014/051861 GB2014051861W WO2014202968A1 WO 2014202968 A1 WO2014202968 A1 WO 2014202968A1 GB 2014051861 W GB2014051861 W GB 2014051861W WO 2014202968 A1 WO2014202968 A1 WO 2014202968A1
Authority
WO
WIPO (PCT)
Prior art keywords
lighting fixture
fixture according
housing
light panel
guidance
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.)
Ceased
Application number
PCT/GB2014/051861
Other languages
English (en)
Inventor
John Desmond
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.)
JCC Lighting Products Ltd
Original Assignee
JCC Lighting Products Ltd
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 JCC Lighting Products Ltd filed Critical JCC Lighting Products Ltd
Publication of WO2014202968A1 publication Critical patent/WO2014202968A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

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
    • F21V19/00—Fastening of light sources or lamp holders
    • 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
    • F21V17/002—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages with provision for interchangeability, i.e. component parts being especially adapted to be replaced by another part with the same or a different function
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S9/00—Lighting devices with a built-in power supply; Systems employing lighting devices with a built-in power supply
    • F21S9/02—Lighting devices with a built-in power supply; Systems employing lighting devices with a built-in power supply the power supply being a battery or accumulator
    • F21S9/022—Emergency lighting devices
    • F21S9/024—Emergency lighting devices using a supplementary light source for emergency lighting
    • 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
    • F21V19/004—Fastening of light source holders, e.g. of circuit boards or substrates holding light sources by deformation of parts or snap action mountings, e.g. using clips
    • 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
    • F21V19/04—Fastening of light sources or lamp holders with provision for changing light source, e.g. turret
    • 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
    • F21V21/00—Supporting, suspending, or attaching arrangements for lighting devices; Hand grips
    • F21V21/02—Wall, ceiling, or floor bases; Fixing pendants or arms to the bases
    • F21V21/03—Ceiling bases, e.g. ceiling roses
    • 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
    • F21V23/0471—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 the proximity, the presence or the movement of an object or a person
    • 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
    • F21V17/18—Latch-type fastening, e.g. with rotary action
    • 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
    • F21V19/0035—Fastening of light source holders, e.g. of circuit boards or substrates holding light sources the fastening means being capable of simultaneously attaching of an other part, e.g. a housing portion or an optical component
    • 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
    • F21Y2105/00—Planar light sources

Definitions

  • This invention relates to lighting fixtures, and more particularly to housing apparatus for lighting fixtures.
  • the invention has particular, but not exclusive, application in the field of light emitting diode (LED] based lighting fixtures for commercial, home and industrial applications.
  • LED light emitting diode
  • LED light emitting diode
  • Conventional lighting fixtures comprise a housing to contain the incandescent or fluorescent light source, and are often provided in accepted industrial dimensions to accept fluorescent tubes typically manufactured to standardised sizes.
  • fluorescent tubes typically manufactured to standardised sizes.
  • several fluorescent tubes are fitted within the housing of the lighting fixture, and one or more reflectors and/or diffusers are employed in an attempt to provide an even light intensity directed over the area to be lit.
  • Such fixtures are often manually fixed by bolts or screws provided in the concrete ceiling of a large installation (e.g. warehouse] during construction (to a set size and distance so as to co-operate with international or de-facto standards], or are suspended from such fixings in the ceiling by wire above the area to be lit
  • the fixtures may also be fitted or recessed so as to be flush with ceiling tiles.
  • LED light emitting diode
  • edge-lit lighting panels comprising a strip of LEDs along one edge of the panel are known, and together with waveguides and diffusers provide so called “light tiles”.
  • waveguides and diffusers provide so called "light tiles”.
  • product JC71276 is a 600mm by 600mm mains driven panel providing 2900 lumens at 4700k (cool white].
  • Such lighting fixtures being mounted flush with a ceiling, are not, in general easily accessible for maintenance, repair or replacement. Such work therefore typically requires specialist contractors since removal of optical components, or even other or neighbouring ceiling tiles is often necessary to gain access to the tube or panel or inner circuitry of the lighting fixture.
  • a lighting fixture comprising a housing and a cooperating light panel, the housing comprising securing means for securing the light panel to the housing when in a securing position, and circuitry means for powering the light panel thereto, and wherein the light panel and housing are adapted to cooperate by the provision of engaging guidance means.
  • the light panel and housing co-operate via the engaging guidance means to enable quick and easy installation and subsequent maintenance, repair or replacement.
  • the engaging guidance means comprises a guidance channel or groove and associated reciprocating means in the form of pins, pegs or lugs.
  • the guidance channel is arranged to extend horizontally from a first insertion portion to an end stop portion of the housing.
  • the end stop portion comprises a recess extending downwards vertically with respect to the horizontally extending guidance channel.
  • Insertion of the panel to the housing results in the pins, pegs or lugs and channel cooperating so that the panel may be easily and safely moved from an insertion position to the end stop position.
  • the panel may then hinge rotatably about the pin, peg or lug inserted in the end stop recess, enabling electrical access and connections to the panel to be made in a safe and secure manner.
  • the guidance channel or groove also comprises a downwardly extending ramp portion extending from the first insertion portion, and optionally an upwardly extending ramp portion immediately preceding the end stop portion.
  • the panel may be moved backwards and forwards along the horizontal portion of the channel with the ramps reducing the chance of the panel sliding out of the channel and falling to the floor.
  • the lighting fixture housing comprises a base plate having end sections connected by longitudinally extending side members, and wherein each end section is provided with the guidance channel.
  • the light panel is provided with the associated reciprocating means in the form of pegs or pins or lugs adapted to engage with the guidance channels of each end section.
  • the panel may be provided with the guidance channels, and the housing is adapted with channel reciprocating means in the form of pins, pegs or lugs to engage and co-operate with the guidance channels of the light panel.
  • the housing is provided with a battery pack and movement sensor to enable automatic operation in dependence on detected movement in the area of the lighting fixture, and furthermore emergency operation via the battery pack in case of a power supply fault or interruption.
  • Figure 1 is a diagram of an embodiment of a lighting fixture in a closed or secured position
  • Figure 2 is a diagram of the lighting fixture of figure 1 in an open position
  • Figure 3 shows the lighting fixture of Figures 1 and 2 with a light panel removed for clarity
  • Figure 4 illustrates a section of the housing of Figure 1, depicting power circuitry and connection elements
  • Figure 5 depicts a cross sectional view of an end cap section of a lighting fixture embodiment with the light panel removed;
  • Figure 6 illustrates an embodiment in which the light panel is inserted to the housing in a first position
  • Figure 7 shows an embodiment in which the light panel has been moved from a first insertion position of a guidance channel to a further position of the guidance channel;
  • Figure 8 illustrates an embodiment of the lighting fixture with the light panel in a final or end stop position
  • Figure 9 illustrates the light panel of Figure 8 being rotated with about the end stop position
  • Figure 10 depicts an embodiment of the lighting fixture in which the light panel is rotated until it is positioned in a closed or secured position
  • Figure 11 depicts an embodiment of the lighting fixture including movement detection and emergency operation components.
  • FIG. 1 illustrates an embodiment of a lighting fixture 10.
  • the lighting fixture comprises a base plate 15 (not shown] with end section or end cap 12 connected to elongate side members 14 which extend to another end section or end cap 12 to form a housing.
  • the housing comprises a light panel 20, which is shown in Figure 1 in a secured position.
  • Securing means 16 are provided to maintain the light panel 20 in the secured position as shown.
  • the securing means 16 are provided in the form of a clip 16 secured with a small screw 16a (not shown].
  • the securing means may be provided as a retaining "snap-lock" clip 16, to secure the light panel 20 to the housing.
  • the light panel 20, in this embodiment is an edge lit LED light panel 20 which comprises diffusers and light guides (not shown] to provide an even illumination across the panel 20.
  • the end caps 12 may be manufactured from plastic or other suitable material, and the elongate members 14 may be extruded and or galvanised aluminium struts.
  • the housing may be manufactured by any appropriate method.
  • the entire housing comprising end sections 12 and elongate members 14 and base plate may be produced from a single block of extruded aluminium, or for example the entire housing may be 3D printed using appropriate plastic materials, or may be manufactured according to conventional plastic injection moulding techniques.
  • Figure 2 illustrates the lighting fixture 10 in an open or insertion configuration.
  • the light panel 20 has been swung down from its closed position by the releasing of securing means 16.
  • the back plane or plate 15 of the housing is now visible in Figure 2, and in this embodiment is provided with standard "besa box connections" 18 as is well known in the lighting and wiring industries.
  • electrical connections means 19 which may comprise a standardised electrical connector for connecting power to the light panel 20.
  • Light panel 20 has been adapted with the provision of engaging pegs or pins 22 a, 22b on opposite short sides of the panel 20, the purpose of which will be explained shortly.
  • FIG. 3 illustrates the lighting fixture 10 with the light panel 20 completely removed from the housing thereby also revealing engaging pegs or pins 22c and 22d on the short edges of the lightpanel 20.
  • Base plate 15 also comprises, in this embodiment, drill holes 24 for attaching the housing to a ceiling or wire during installation.
  • Figure 4 illustrates the internal power circuitry of lighting fixture 10 illustrating in more detail the electrical connector terminal block 19 which itself is connected via female plug 46 and male plug 48 to LED driver 50 for powering the LED light panel 20.
  • Figure 5 illustrates a cross sectional view of the housing and in particular the end cap section 12.
  • engaging guidance means are provided in the form of a channel or groove 60 adapted to accept and cooperate with engaging means 22d, in this embodiment in the form of associated reciprocating pegs or pins 22a;22d of the light panel 20.
  • the guidance groove or channel 60 is supported by ribs 61a; 61b; 61c; 61d; 61e.
  • the guidance channel 60 has an insertion portion 62 for accepting peg 22d of light panel 20, followed by a downwardly ramped section 64.
  • the channel 60 subsequently extends horizontally to an end stop section 68.
  • the end stop section is immediately preceded by an upwardly extending ramp or incline section 66 of the channel 60.
  • the end stop section 68 comprises, in this embodiment, a vertical recess or detent designed to accept the pin or peg 22d of light panel 20.
  • the light panel 20 is inserted vertically 70 into the housing at insertion position 62 so that respective pins 22a;22d engage with each respective channel 60 of each end section 12 as shown in Figure 6.
  • the installer, maintainer, contractor or user then slides the panel 20 along the downwardly ramping section 64 of channel 60 and along to the opposite end of the channel at position 66 as shown in Figure 7.
  • the panel 20 is then moved upwards through ramped section 66 until the pin 22d of panel 20 drops into end stop section 68.
  • the panel 20 is now supported in a hinged position 76 about the housing 10 in a relatively stable position as shown in Figure 8.
  • the guidance channels 60 and pins 22a;22d form together engaging guidance means which enables easy and secure installation and rotation of the panel 20 with respect to the housing for installation.
  • Figure 9 shows the panel 20 hinging and being rotated about pin 22d and end stop section 68 towards the lighting fixture 10 as indicated by arrow 80 in the Figure. Also shown in Figure 9 is securing means 16, comprising in this embodiment clip 16 and screw 16a.
  • end cap sections 12 are provided with guidance means in the form of a channel or groove 60 into which engaging means 22a, 22b, 22c, 22d of light panel 20 are inserted.
  • downwardly inclining ramp section 64 and upwardly inclining ramp section 66 enable the light panel 20 to hang freely whilst maintenance, cleaning or connections are made to lighting fixture 10.
  • the user may simply remove securing screw 16a and clip 16 and the panel 20 will swing down freely as shown in Figure 8.
  • the panel 20 may then be moved out of end stop portion 68 and the user may slide the panel 20 backwards and forwards along channel 60 as is needed for internal maintenance.
  • the ramping sections 64 and 66 prevent the panel 20 from accidently being pushed out of the channel altogether without deliberate intention to do so on the part of the user, thereby providing quick and convenient access to all parts of the housing without the need to completely detach the light panel 20.
  • the channel or groove 60 may be provided on the light panel 20 and the housing may be adapted to provide the pegs, pins or lugs 22 a; 22b; to engage with the channel 60.
  • the engaging means in the form of pegs, pins or lugs 22a are provided on the end cap sections 12 and the guidance channel or groove is provided on the light panel 20.
  • the securing means 16 may comprise a snap clip locking mechanism.
  • the securing means may be provided in the form of a sliding cap to secure and lock the light panel 20 in position.
  • Figure 11 illustrates an embodiment of the lighting fixture 10 having an alternative or emergency power supply 90 configured so as to provide power to the light panel 20 (not shown for clarity] in the event of an interruption to the power supply to the lighting fixture 10.
  • the emergency power supply 90 may be a battery or battery pack depending on the energy requirements of the light panel 20.
  • the alternative power supply 90 may be mounted internally within the lighting fixture 10.
  • An emergency LED indicator (not shown] may also be provided and arranged to indicate to a user that there is a problem with the power supply to the lighting fixture and that the lighting fixture 10 is operating on the alternative supply 90.
  • the lighting fixture 10 is also provided with an external movement sensor 92 as shown in Figure 11.
  • the movement sensor 92 is arranged to detect movement in the vicinity of the lighting fixture 10 and to power the lighting fixture 10 in dependence on detected movement. This has benefits in terms of reducing overall energy consumption by automatically activating or deactivating the lighting fixture 10 in dependence on the sensor output.
  • the movement sensor 92 may comprise a microwave sensor, or alternatively the movement sensor 92 may comprise a passive or pyroelectric infra-red (PIR] sensor.
  • the lighting fixture 10 is depicted as being generally rectangular.
  • the lighting fixture 10 may be dimensioned and designed to accommodate any size or shape of light panel 20 suitable for lighting applications.
  • the lighting fixture 10 is designed to have a length and width of approximately 600mm so as to be suitable for ceiling tile lighting applications.
  • the lighting fixture 10 is designed with a length of approximately 1200mm and an approximate width of 600mm for compatibility with and or replacement of existing fluorescent tube installations.
  • the lighting fixture 10 is designed with a length of approximately 1200mm and an approximate width of 300mm for compatibility with and or replacement of existing fluorescent tube installations.
  • the lighting fixture 10 is designed with a length of approximately 1500mm and an approximate width of 600mm for compatibility with and or replacement of existing fluorescent tube installations.
  • the lighting fixture 10 is provided with a length of approximately 1500mm and an approximate width of 300mm for compatibility with and or replacement of existing fluorescent tube installations.
  • a lighting fixture 10 comprising a housing and a cooperating light panel 20, the housing comprising securing means 16, 16a for securing the light panel 20 to the housing when in a securing position, and circuitry means 19; 40;46;48;50;90 for powering the light panel 20 thereto, and wherein the light panel 20 and housing are adapted to cooperate by the provision of engaging guidance means 60; 22a;22b;22c;22d.
  • the engaging guidance means enable quick and easy installation of the light panel 20, and further provides convenient access for future maintenance.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)

Abstract

L'invention concerne un appareil d'éclairage (10) comprenant un boîtier (12, 14) et un panneau lumineux (20) coopérant, le boîtier comprenant des moyens de fixation (16, 16a) pour fixer le panneau lumineux (20) au boîtier lorsqu'il se trouve dans une position de fixation et des moyens de circuit (19, 40, 46, 48, 50) pour alimenter le panneau lumineux (20) sur celui-ci, et le panneau lumineux (20) et le boîtier étant adaptés pour coopérer par la fourniture de moyens de guidage d'entrée en prise (60, 22a, 22b, 22c, 22d). Les moyens de guidage d'entrée en prise permettent une installation rapide et aisée du panneau lumineux (20) et offrent en outre un accès aisé pour une future maintenance.
PCT/GB2014/051861 2013-06-18 2014-06-17 Appareil d'éclairage Ceased WO2014202968A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB1310869.1 2013-06-18
GB201310869A GB2515308B (en) 2013-06-18 2013-06-18 Lighting fixture

Publications (1)

Publication Number Publication Date
WO2014202968A1 true WO2014202968A1 (fr) 2014-12-24

Family

ID=48914765

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB2014/051861 Ceased WO2014202968A1 (fr) 2013-06-18 2014-06-17 Appareil d'éclairage

Country Status (2)

Country Link
GB (1) GB2515308B (fr)
WO (1) WO2014202968A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111750305A (zh) * 2020-07-07 2020-10-09 深圳市云镜照明科技有限公司 一种嵌入式中字铝对接拼装的洁净天棚灯具

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009129766A (ja) * 2007-11-26 2009-06-11 Panasonic Electric Works Co Ltd Ｅｌ照明装置
WO2010116200A1 (fr) * 2009-04-07 2010-10-14 Yipi Pte Ltd Lampe et tube à del à économie d'énergie
GB2489505A (en) * 2011-03-31 2012-10-03 Litonics Ltd Lighting apparatus control method
US20120306377A1 (en) * 2011-04-22 2012-12-06 Rohm Co., Ltd. Led lamp
EP2565535A2 (fr) * 2011-08-30 2013-03-06 Panasonic Corporation Dispositif dýéclairage

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009129766A (ja) * 2007-11-26 2009-06-11 Panasonic Electric Works Co Ltd Ｅｌ照明装置
WO2010116200A1 (fr) * 2009-04-07 2010-10-14 Yipi Pte Ltd Lampe et tube à del à économie d'énergie
GB2489505A (en) * 2011-03-31 2012-10-03 Litonics Ltd Lighting apparatus control method
US20120306377A1 (en) * 2011-04-22 2012-12-06 Rohm Co., Ltd. Led lamp
EP2565535A2 (fr) * 2011-08-30 2013-03-06 Panasonic Corporation Dispositif dýéclairage

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111750305A (zh) * 2020-07-07 2020-10-09 深圳市云镜照明科技有限公司 一种嵌入式中字铝对接拼装的洁净天棚灯具
CN111750305B (zh) * 2020-07-07 2022-06-10 深圳市云镜照明科技有限公司 一种嵌入式中字铝对接拼装的洁净天棚灯具

Also Published As

Publication number Publication date
GB2515308A (en) 2014-12-24
GB201310869D0 (en) 2013-07-31
GB2515308B (en) 2015-05-06

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