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WO2014069791A1 - Appareil d'éclairage - Google Patents

Appareil d'éclairage Download PDF

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Publication number
WO2014069791A1
WO2014069791A1 PCT/KR2013/008684 KR2013008684W WO2014069791A1 WO 2014069791 A1 WO2014069791 A1 WO 2014069791A1 KR 2013008684 W KR2013008684 W KR 2013008684W WO 2014069791 A1 WO2014069791 A1 WO 2014069791A1
Authority
WO
WIPO (PCT)
Prior art keywords
guide plate
light guide
light source
led light
elastic support
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/KR2013/008684
Other languages
English (en)
Korean (ko)
Inventor
다키모토시게루
노미숙
김택규
추승관
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.)
Kowa Co Ltd
Techsign Light Panel Co Ltd
Original Assignee
Kowa Co Ltd
Techsign Light Panel Co 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 Kowa Co Ltd, Techsign Light Panel Co Ltd filed Critical Kowa Co Ltd
Publication of WO2014069791A1 publication Critical patent/WO2014069791A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • 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
    • F21V17/02—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages with provision for adjustment
    • 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
    • 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
    • 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 relates to a structure of a lighting device.
  • FIG. 4 is a cross-sectional view showing an example of a conventional configuration of an edge light type lighting device, in which reference numeral 102 denotes a light guide plate made of a translucent material, and reference numeral 103 is disposed to face the side of the light guide plate 102 so as to illuminate the light guide plate within the light guide plate.
  • the LED light source which emits L1) is shown, and the light L1 radiate
  • Such an edge light type lighting device has a feature that the LED light source 103 can be made thin because the LED light source 103 is disposed not on the rear side of the light guide plate 102 but on the side surface.
  • Patent Document 1 Japanese Patent Publication No. 2010-177077
  • the lighting apparatus having such a configuration is also used as a backlight of a liquid crystal TV or a liquid crystal monitor.
  • the lighting apparatus is installed in a ceiling or the like instead of a backlight, the light source of the LED light source 103 is increased and the amount of heat is also increased. Particular attention was paid to the expansion of 102.
  • An object of the present invention is to provide a lighting apparatus that can solve such a problem.
  • the invention according to claim 1 is a light guide plate made of a light-transmitting material, an LED light source arranged to face at least part of a side surface of the light guide plate (hereinafter referred to as a light source facing side), and emitting illumination light in the light guide plate;
  • An illumination apparatus comprising a frame member arranged to enclose at least a portion of a light guide plate and at least a portion of the LED light source, and accommodate them therein.
  • the surface of the light guide plate from which the light from the LED light source is emitted is the front of the light guide plate, and the surface of the light guide plate opposite to the front surface of the light guide plate is the rear surface of the light guide plate.
  • An elastic support portion which is supported by the LED light source and imparts elastic support force to the first surface in direct contact with the first light guide plate directly or indirectly through another member;
  • a stopper portion which defines a position in the plate thickness direction of the light guide plate which is supported by the LED light source and is elastically supported by the elastic support part in direct contact with the second light guide plate directly or indirectly through another member;
  • An accommodation space portion formed in the frame member to accommodate the LED light source, the elastic support portion, and the stopper portion in a state movable in a normal direction of the light source facing side;
  • a spring member is disposed between the LED light source and the frame member to elastically support the LED light source toward the light source facing side of the light guide plate.
  • a support portion extending from a position proximate to the LED light source in a direction along the first surface of the light guide plate to support the elastic support, and a position proximate to the LED light source.
  • the stopper portion extending in a direction along the second light guide plate from the light guide plate, and arranged to connect a portion close to the LED light source at the support portion and a portion close to the LED light source at the stopper portion;
  • the substrate is fixed to the base portion, characterized in that the cross section is provided with a substrate holding member formed in a substantially 'c' shape.
  • a diffusion plate for diffusing light is disposed along the front of the light guide plate
  • Reflecting sheet for reflecting light is disposed along the back of the light guide plate
  • One of the stopper part and the elastic support part is disposed to indirectly contact the light guide plate through the diffusion plate,
  • the other one of the stopper part and the elastic support part is configured to be in direct contact with the light guide plate at a portion where the reflective sheet is not disposed.
  • the invention according to claim 4 is the invention according to any one of claims 1 to 3, wherein the frame member and the spring member are made of a material having excellent thermal conductivity,
  • the heat of the LED light source is characterized in that configured to dissipate through the spring member and the frame member.
  • the relative positional relationship (positional relationship with respect to the plate thickness direction) of the light guide plate and the stopper part is constant.
  • the stopper part is supported by the LED light source, the relative positional relationship (positional relationship with respect to the plate thickness direction) between the stopper part and the LED light source is also constant.
  • the relative positional relationship (positional relationship with respect to the said plate thickness direction) of the said LED light source and the said light guide plate is also constant. Therefore, the amount of light emitted from the LED light source into the light guide plate through the light source facing side becomes substantially constant, so that the luminous efficiency can be maintained substantially constant regardless of thermal expansion of the light guide plate.
  • the reflective sheet is allowed to move or expand in the plane direction in a range not in contact with the stopper portion or the elastic support portion, so that bending or buckling occurs (ie, Generation of warpage and buckling due to being restricted in movement and expansion in the surface direction) can be suppressed, and generation of light emission nonuniformity accompanying the warpage and buckling can be suppressed.
  • the heat of the LED light source can be efficiently transferred from the spring member to the frame member, thereby increasing the heat dissipation effect can improve the life of the LED light source.
  • Figure 1 (a) is a cross-sectional view showing an example of the structure of the lighting apparatus according to the present invention
  • Figure 1 (b) is an enlarged cross-sectional view showing the support structure of the LED light source.
  • Figure 2 (a) is an exploded cross-sectional view showing the support structure and the like of the LED light source
  • Figure 2 (b) is a view seen from the direction of the arrow A of the spring member.
  • FIG. 3 is a perspective view showing an example of the configuration of the LED light source.
  • Figure 4 is a cross-sectional view showing an example of a conventional configuration of the edge light type lighting apparatus.
  • Illumination apparatus is an edge light type lighting apparatus as exemplified by reference numeral 1 in Fig. 1 (a), (b),
  • a light guide plate 2 made of a light-transmissive material such as acrylic or polycarbonate,
  • the light guide plate 2 is disposed so as to face at least a part of the side surface of the light guide plate 2 (see reference numeral 2c of FIG. 2A.
  • LED light source 3
  • a frame member 4 arranged to enclose at least a portion of the light guide plate 2 (ie, an end portion including the light source facing side 2c) and at least a portion of the LED light source 3 to receive them;
  • the light L1 emitted from the LED light source 3 through the light source facing side 2c into the light guide plate 2 is configured to exit from the front surface 2a of the light guide plate 2 (see reference numeral L2).
  • the surface 2a of the side of the light guide plate 2 from which the light from the LED light source 3 is emitted is referred to as a 'light guide plate front', and the front of the light guide plate 2 among the surfaces of the light guide plate 2.
  • the surface 2b on the opposite side to (2a) is called the "light guide plate back surface.”
  • any one 2a or 2b of the light guide plate front surface 2a and the light guide plate rear surface 2b is referred to as a 'light guide plate first surface' and the other side 2b or 2a is referred to as a 'light guide plate second surface'. .
  • the lighting device 1 may be directly or other member (diffuser plate 8 to be described later) on the first surface of the light guide plate (that is, either the front surface of the light guide plate 2a or the rear surface of the light guide plate 2b). And an elastic support portion 5a which is indirectly contacted through any other member).
  • This elastic support part 5a is supported by the said LED light source 3, and is comprised so that an elastic support force may be provided to the 1st surface 2a or 2b of the light guide plate.
  • the stopper portion 6b is arranged to be indirectly contacted.
  • the stopper portion 6b is supported by the LED light source 3 and is configured to define a position in the plate thickness direction ⁇ m of the light guide plate 2 elastically supported by the elastic support portion 5a. That is, in the configuration shown in FIG.
  • the elastic support portion 5a is in direct contact with the light guide plate rear surface (light guide plate first surface) 2b without being in contact with the reflective sheet 9, and the stopper portion ( 6b) is in contact with the light guide plate front face (light guide plate second surface) 2b through the diffusion plate 8, but is not limited thereto.
  • the elastic support portion 5a is in contact with either the light guide plate front surface 2a or the light guide plate back surface 2b directly or indirectly through another member, and the stopper portion 6b is directly or indirectly through the other member.
  • the other surface that is, the surface in which the said elastic support part 5a was not in contact with the light guide plate front surface 2a and the light guide plate back surface 2b
  • the light guide plate 2 is such that expansion in the plate thickness direction ⁇ m is not suppressed by the frame member 4.
  • the frame member 4 has the LED light source 3, the elastic support portion 5a and the stopper portion 6b as the light source facing side as shown in detail in Figs.
  • a space portion (hereinafter referred to as a "storage space portion") 4s for storing in a state movable in the normal direction ⁇ n of (2c) is formed. Further, as the interior (specifically, the back side of the LED light source 3) of the storage space portion 4s, between the LED light source 3 and the frame member 4 (as shown in Fig. 1 (b)).
  • a spring member 7 in a compressed state is disposed between the base 6c and the frame member 4, and the LED light source 3 is disposed. It is comprised so that the light guide plate 2 may be elastically supported by the light source opposing side surface 2c side (right side of illustration).
  • the LED light source 3 disposed to face the light guide plate 2 is not fixed to the frame member 4 and is arranged to be movable in the normal direction ⁇ n, the LED light source 3 Even if the light guide plate 2 expands in the normal direction + n by the heat of, the fear that the LED light source 3 is pressed between the frame member 4 can be avoided. Further, since the LED light source 3 is configured to be elastically supported by the spring member 7 toward the light source facing side 2c, the LED light source 3 and the light source facing side 2c ) Are brought into close contact with each other, and the light emitted from the LED light source 3 is efficiently guided to the light guide plate 2 to increase the luminous efficiency.
  • a gap is formed between the light guide plate 2 and the frame member 4 to allow thermal expansion of the light guide plate 2 in the plate thickness direction ⁇ m.
  • the light guide plate 2 can move in the storage space portion 4s in the plate thickness direction ⁇ m, so that the plate thickness direction ⁇ m is between the light guide plate 2 and the LED light source 3. It is concerned that relative position deviation occurs.
  • the relative positional relationship between the light guide plate 2 and the stopper part 6b (the plate thickness direction) The positional relationship with respect to ⁇ m) is constant.
  • the relative positional relationship (positional relationship with respect to the plate thickness direction ⁇ m) between the stopper portion 6b and the LED light source 3 is also included. It is constant.
  • the relative positional relationship (positional relationship with respect to the plate thickness direction ⁇ m) between the LED light source 3 and the light guide plate 2 is also constant. Therefore, the amount of light L1 emitted from the LED light source 3 through the light source facing side 2c into the light guide plate 2 becomes substantially constant, thereby improving luminous efficiency regardless of thermal expansion of the light guide plate 2. You can keep it almost constant.
  • the elastic support part 5a and the stopper part 6b mentioned above may be directly fixed to the said LED light source 3, it may be made to fix via either member.
  • the member (referred to herein as “support portion”) 6a for supporting the elastic support portion 5a is the LED light source 3.
  • the base 6c may be disposed so as to connect a portion adjacent to the LED light source 3, and the base 6c may be fixed to the LED light source 3. That is, in this example, the elastic support part 5a is supported by the LED light source 3 through the support part 6a and the base 6c, and the stopper part 6b is supported by the base 6c. It is supported by the LED light source (3).
  • the members (which are referred to herein as "substrate holding members") 6 that form these support portions 6a, stopper portion 6b, and base 6c may have a cross-sectional shape of approximately 'C' shape.
  • substrate holding member 6 shown to FIG. 1 (b) is exemplified to one preferred embodiment to the last, and does not exclude that a cross section is a shape other than a substantially "c" shape.
  • the substrate holding member 6 or the spring member 7 need not be disposed continuously over the entire length of the frame member 4. For example, you may arrange
  • the elastic support portion 5a described above may be formed of resin (for example, ABS resin) or rubber, and as illustrated in FIGS. 1B and 2A, the plate thickness direction ⁇ of the light guide plate 2.
  • a thin plate shape (wing plate shape) inclined with respect to m may be used so that the leading edge thereof directly or indirectly contacts the second light guide plate 2b or 2a, but other materials and structures are not excluded.
  • a spring material may be used for the elastic support 5a, and when the spring member or elastic member is inserted between the elastic support 5a and the LED light source 3, the elastic support 5a itself is a hard object. That is, it can also be made into a rigid body.
  • a plurality of light emitting elements 3B may be connected to one substrate 3A.
  • 39 light emitting elements 3B having a width of about 2.3 mm were mounted on a substrate 3A having a length of 60 cm and used.
  • the light guide plate 2 may have the shape of the light guide plate front surface 2a and the light guide plate back surface 2b as a substantially rectangular shape, and may be made into shapes other than a rectangle.
  • the LED light source 3 is
  • the frame member 4 is preferably disposed so as to surround all the edges of the light guide plate 2, but the form of the shape surrounding only some of the edges is not excluded from the scope of the present invention.
  • the frame members 4 and 4 are arranged at the left end and the right end, respectively, and these frame members 4 and 4 may or may not be connected. You don't have to.
  • the frame member 4 may be divided into a plurality of parts, and may be configured to facilitate assembly or disassembly.
  • a diffuser plate (for example, an acrylic sheet or polycarbonate sheet) 8 for diffusing light is disposed along the light guide plate front surface 2a, and a reflective sheet 9 for reflecting light is provided on the rear surface of the light guide plate.
  • a diffuser plate for example, an acrylic sheet or polycarbonate sheet
  • a reflective sheet 9 for reflecting light is provided on the rear surface of the light guide plate.
  • one of the stopper part 6b and the elastic support part 5a is arranged to indirectly contact the light guide plate 2 through the diffusion plate 8, and the stopper part 6b and the elastic support part
  • the other of 5a may be configured to be in direct contact with the light guide plate 2 at a portion where the reflective sheet 9 is not disposed.
  • the reflective sheet 9 is allowed to move or expand in the plane direction in a range that does not come into contact with the stopper portion 6b or the elastic support portion 5a, thereby causing warping or buckling. (That is, the occurrence of warpage and buckling due to being restricted in movement and expansion in the plane direction) can be suppressed, and the occurrence of light emission unevenness accompanying the warpage and buckling can be suppressed.
  • a flexible material for example, a thin resin (PET) sheet or the like
  • PET thin resin
  • the frame member 4 and the spring member 7 are made of a material having excellent thermal conductivity (preferably a metal material such as aluminum), so that the heat of the LED light source 3 is caused by the spring member 7. And it may be configured to diverge through the frame member (4). In such a case, heat of the LED light source 3 can be efficiently transferred from the spring member 7 to the frame member 4, thereby improving heat dissipation effect and improving the life of the LED light source 3. Can be.
  • the spring member 7 uses a leaf spring having a substantially U-shaped cross section as illustrated in FIG. 2 (b), the member adjacent to the spring member 7 and the spring member 7 (that is, The contact area with the frame member 4 and the substrate holding member 6 can be secured widely, and the heat dissipation effect can be enhanced.
  • the spring member 7 shown in FIG. 1 (b) is in direct contact with the frame member 4, but is not limited thereto, and indirectly makes contact with the frame member 4 through any one member. It is not to be excluded from the scope of the present invention. Moreover, you may make it the member 5 which comprises the said elastic support part 5a have other functions, such as sealing.
  • lighting device 2 light guide plate
  • Light guide plate front surface (light guide plate 1st surface or light guide plate 2nd surface)

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • General Physics & Mathematics (AREA)
  • Planar Illumination Modules (AREA)
  • Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)

Abstract

La présente invention concerne un appareil d'éclairage du type à émission latérale, mettant en oeuvre une source d'éclairage à DEL qui n'inhibe pas la dilatation thermique d'une plaque de guidage de la lumière tout en préservant son efficacité lumineuse à un niveau élevé. Selon l'invention, une source d'éclairage à DEL (3) est orientée vers une surface latérale de la plaque de guidage de la lumière (2) et un élément de support de substrat (6) présentant une section transversale en C est agencé de façon à entourer le bord d'extrémité de la plaque de guidage de la lumière (2) ainsi que la source d'éclairage à DEL (3). Une unité de support élastique (5a) disposée en contact avec la surface arrière (2b) de la plaque de guidage de la lumière (2) de façon à appliquer une force de support élastique, est agencée de telle manière que l'unité de support élastique (5a) est supportée par l'élément de support de substrat (6), et une partie (ci-après dénommée "unité d'arrêt") (6b) de l'élément de support de substrat (6) est agencée sur le côté surface avant (2a) de la plaque de guidage de la lumière (2) de manière à entrer en contact avec une plaque de diffusion (8). Ladite plaque de guidage de la lumière (2) est positionnée à ±m dans le sens de l'épaisseur par l'unité d'arrêt (6b) supportée par la source d'éclairage à DEL (3) et, de cette manière, un rapport de positionnement relatif entre la plaque de guidage de la lumière (2) et la source d'éclairage à DEL (3) est maintenu sensiblement constant et l'efficacité lumineuse est maintenue sensiblement constante.
PCT/KR2013/008684 2012-10-30 2013-09-27 Appareil d'éclairage Ceased WO2014069791A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2012-238694 2012-10-30
JP2012238694A JP2014089864A (ja) 2012-10-30 2012-10-30 照明装置

Publications (1)

Publication Number Publication Date
WO2014069791A1 true WO2014069791A1 (fr) 2014-05-08

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Country Status (3)

Country Link
JP (1) JP2014089864A (fr)
KR (1) KR20140057148A (fr)
WO (1) WO2014069791A1 (fr)

Cited By (5)

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Publication number Priority date Publication date Assignee Title
US20160095450A1 (en) * 2014-10-01 2016-04-07 True Manufacturing Co., Inc. Edge-lit door for refrigerator unit
CN108413297A (zh) * 2018-03-23 2018-08-17 安徽康佳绿色照明技术有限公司 一种侧发光弹性机构活动铝型材led平板灯
US20180341058A1 (en) * 2017-05-27 2018-11-29 Nulite Lighting Edge-Lit Lighting Fixtures
US10810914B2 (en) 2017-08-09 2020-10-20 True Manufacturing Co., Inc. Illuminating display window and merchandiser display unit comprising same
WO2020224922A1 (fr) * 2019-05-06 2020-11-12 Zumtobel Lighting Gmbh Lampe allongée

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KR101533949B1 (ko) * 2015-04-30 2015-07-10 (주)쓰리씨라이팅인더스 엣지타입 조명등장치
KR101588168B1 (ko) * 2015-06-13 2016-02-01 최철수 천정 패널 고정장치
JP2017117552A (ja) * 2015-12-22 2017-06-29 ビニフレーム工業株式会社 導光パネルの取付構造
JP2019017883A (ja) * 2017-07-21 2019-02-07 株式会社三共 遊技機
KR102178985B1 (ko) * 2019-12-13 2020-11-13 이윤황 보조프레임이 구비된 조명등
JP7607219B2 (ja) * 2020-01-29 2024-12-27 パナソニックＩｐマネジメント株式会社 照明装置
KR102580996B1 (ko) * 2021-10-15 2023-09-25 박고은 등기구용 고정 장치

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KR101191748B1 (ko) * 2011-09-28 2012-10-15 명범영 대형 도광판의 열팽창을 탄력적으로 완충할 수 있는 구조로 된 백라이트 장치

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Publication number Priority date Publication date Assignee Title
US7453419B2 (en) * 2004-11-24 2008-11-18 Microsoft Corporation Edge lighting system for interactive display surface
JP2006185724A (ja) * 2004-12-27 2006-07-13 Minebea Co Ltd 面状照明装置
KR20100061326A (ko) * 2008-11-27 2010-06-07 삼성전자주식회사 백라이트 유닛 및 이를 포함하는 디스플레이장치
KR101079749B1 (ko) * 2011-03-01 2011-11-03 코와 가부시키가이샤 조명장치
KR101191748B1 (ko) * 2011-09-28 2012-10-15 명범영 대형 도광판의 열팽창을 탄력적으로 완충할 수 있는 구조로 된 백라이트 장치

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20160095450A1 (en) * 2014-10-01 2016-04-07 True Manufacturing Co., Inc. Edge-lit door for refrigerator unit
US9801474B2 (en) * 2014-10-01 2017-10-31 True Manufacturing Co., Inc. Edge-lit door for refrigerator unit
US20180341058A1 (en) * 2017-05-27 2018-11-29 Nulite Lighting Edge-Lit Lighting Fixtures
US11112556B2 (en) * 2017-05-27 2021-09-07 Nulite Lighting Edge-lit lighting fixtures
US10810914B2 (en) 2017-08-09 2020-10-20 True Manufacturing Co., Inc. Illuminating display window and merchandiser display unit comprising same
US11430356B2 (en) 2017-08-09 2022-08-30 True Manufacturing Co., Inc. Illuminating display window and merchandiser display unit comprising same
CN108413297A (zh) * 2018-03-23 2018-08-17 安徽康佳绿色照明技术有限公司 一种侧发光弹性机构活动铝型材led平板灯
WO2020224922A1 (fr) * 2019-05-06 2020-11-12 Zumtobel Lighting Gmbh Lampe allongée
CN113710953A (zh) * 2019-05-06 2021-11-26 宗拓贝尔照明器材有限公司 细长灯
AT17490U1 (de) * 2019-05-06 2022-06-15 Zumtobel Lighting Gmbh At Längliche Leuchte
CN113710953B (zh) * 2019-05-06 2023-06-23 赞托贝尔照明有限公司 细长灯
US11821596B2 (en) 2019-05-06 2023-11-21 Zumtobel Lighting Gmbh Elongate light

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