[go: up one dir, main page]

WO2009122453A1 - Appareil d'éclairage à del - Google Patents

Appareil d'éclairage à del Download PDF

Info

Publication number
WO2009122453A1
WO2009122453A1 PCT/IT2008/000219 IT2008000219W WO2009122453A1 WO 2009122453 A1 WO2009122453 A1 WO 2009122453A1 IT 2008000219 W IT2008000219 W IT 2008000219W WO 2009122453 A1 WO2009122453 A1 WO 2009122453A1
Authority
WO
WIPO (PCT)
Prior art keywords
leds
loa
loc
led
cap
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/IT2008/000219
Other languages
English (en)
Inventor
Franco Venturini
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.)
WISSEN LUX SpA
Original Assignee
WISSEN LUX SpA
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 WISSEN LUX SpA filed Critical WISSEN LUX SpA
Priority to PCT/IT2008/000219 priority Critical patent/WO2009122453A1/fr
Publication of WO2009122453A1 publication Critical patent/WO2009122453A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • 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
    • 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 relates to a LED lighting apparatus.
  • the invention relates to LED lighting apparatus that are used in the technical lighting sector, i.e. for indoor lighting (in houses, offices, shops, warehouses, etc.) and outdoor lighting (street lighting, for example) .
  • the main technical task of the present invention is to make available a LED lighting apparatus that does not suffer for the abovementioned drawbacks.
  • the present invention aims at providing a LED lighting apparatus enabling an acceptable illumination of areas of predetermined width, while ensuring a reduced energy consumption. It is another aim of the invention to make available a LED lighting apparatus capable of obtaining a homogeneous and uniform lighting.
  • a further aim of the invention is to provide a LED lighting apparatus of simple and cheap structure and involving a reduced manufacturing complexity.
  • FIG. 1 diagrammaticalIy shows a perspective view of an apparatus in accordance with the invention, with some parts removed for a better view of others;
  • FIG. 1 diagrammatically shows a plan view of the apparatus seen in Fig. 1;
  • - Fig. 3 diagrammatically shows a perspective view of an element of the apparatus of the invention,-
  • FIG. 4 diagrammatically shows a perspective view of a further element of the apparatus of the invention.
  • FIG. 5 is a diagrammatic perspective view of an alternative embodiment of the element seen in Fig. 4;
  • Figs . 6 and 6a diagrammatically show a plan view and an enlarged perspective view respectively of a detail in Fig . 4 ;
  • Figs. 7 and 7a diagrammatically show a plan view and an enlarged perspective view respectively of an alternative embodiment of the detail seen in Figs. 6 and 6a.
  • a LED lighting apparatus in accordance with the present invention has been generally identified by reference numeral 1.
  • apparatus 1 can be used, depending on requirements, for indoor lighting but also for illuminating areas in the open, such as for street lighting, for example.
  • Apparatus 1 comprises a plurality of LEDs lOa-lOc that, as better clarified in the following, are suitably arranged so as to obtain a satisfactory lighting of a predetermined area.
  • LEDs lOa-lOc are divided into at least three sets lla- llc of LEDs, each of them being disposed along a strip the extension of which substantially starts from the vertex V of a cap C and reaches the base B of said cap.
  • LEDs 10a-10c are disposed in strips substantially belonging to the surface of cap C, starting from vertex V of same and reaching base B (see Fig. 1) .
  • the strips are at least partly contained in cap C and preferably are fully contained therein.
  • the sets of LEDs can also be more than three in number; preferred embodiments of apparatus 1 may comprise six or nine sets of LEDs, for example.
  • LEDs 10a-10c are disposed in the above described configuration in an ideal manner, i.e. irrespective of the true presence of a real physical cap (as it will be more apparent in the following of the present specification) .
  • cap it is intended a rounded or concave open surface, preferably substantially fully concave and having an opening the profile of which is defined by a base line, the latter delimiting an ideal base surface merely referred to as base B.
  • Vertex V of cap C is the point belonging to said open surface that has the maximum distance from base B.
  • the cap height is the distance between vertex V and base B.
  • the sections of cap C in planes parallel to the base delimit surfaces having non decreasing areas, and in particular increasing areas, on moving away from vertex V towards base B .
  • At least one plane containing the cap height is a plane of symmetry of cap C itself.
  • At least two planes passing through the height of cap C are planes of symmetry of the cap C itself.
  • all planes passing through the cap height are planes of symmetry of cap C; in this case, the straight line on which the cap height lies is an axis of cylindrical symmetry of cap C.
  • cap C is a spherical cap, i.e. one of the parts into which the sphere is divided by a secant plane. Reference will be made to a hemisphere when the secant plane passes through a diameter of said sphere. Reference will be made to the height of the spherical cap C to indicate the diameter portion included between base B and the spherical surface. Vertex V is the point where this diameter meets the spherical • surface.
  • the three sets lla-lie of LEDs are spaced apart the same distance from each other and are such arranged that main lighting directions Da-Dc of the LEDs face the region to be lit.
  • LEDs 10a-10c converge away from said LEDs towards the surface to be lit.
  • a LED typically generates a light beam in the form of a cone the vertex of which is defined by the
  • the main lighting direction is therefore the straight line along which the geometric height of said cone is measured.
  • the width of the light .beam of the LEDs i.e. the opening width of the above mentioned cone, is included between 5° and 40°.
  • the light beam produced by the LEDs impinges on the area to be lit without having components directed towards other regions. This enables the presence of diffused light in regions that are not to be lit, to be avoided; for instance, should the lighting apparatus be used for illuminating a street, the presence of diffused light directed upwards is avoided.
  • LEDs lOa-lOc are such arranged that, on the surface to- be lit, the area lit by each LED at least partly overlaps the area lit by the adjacent LED/LEDs .
  • this lighted area has a shape with a geometric centre
  • the LEDs can preferably be disposed in such a manner that the line delimiting the area lit by a LED passes through the geometric centre of the are lit by one or more adjacent LEDs.
  • Fig. 1 shown in Fig. 1 is how the LEDs belonging to the three sets lla-lie have main lighting directions Da-Dc intersecting at the same point placed between the lighting apparatus 1 and surface 100 to be lit.
  • the main lighting directions Da-Dc can intersect at regions rather than at a single point.
  • intersection point or region is placed at different heights in the distance separating the lighting apparatus from the surface to be lit, depending on the starting orientation of the light beams emitted by the LEDs.
  • the main lighting directions Da-Dc of each set of LEDs lie in the same plane.
  • LEDs lOa-lOc of each set lla-llc of LEDs have different lighting powers, as a function of the features and in particular the geometry of the surface to be lit.
  • the lighting power of LEDs 10a-10c of each set lla-llc increases on increasing of the distance of the LEDs from vertex V of the spherical cap C.
  • the LED power increases too.
  • the lighting power emitted by LEDs 10a-10c is not symmetric relative to an axis X
  • this asymmetry ensures that the lighting apparatus illuminates both the pavement and the street portion placed in front of same and does not illuminate (or illuminates in a very reduced manner) the building wall placed behind it (for instance because there is a window of a flat) .
  • the lighting power emitted by LEDs lOa-lOc can be non-symmetric relative to an axis X coincident with the height of the spherical cap C, or non-symmetric relative to any other axis, each time a non-symmetric -lighted surface is wished to be obtained.
  • the lighting power of each LED lOa-lOc it is possible to obtain lighted surfaces having substantially any shape.
  • each LED 10a-10c is provided with an optical conveyor means 20 of its own that is adapted to interact with a light beam emitted by the LED.
  • each optical conveyor means 20 comprises an optical element 21 substantially extending perpendicular to the main lighting direction Da-Dc of LEDs 10a-10c and disposed in close proximity thereto, preferably to ' a distance included between 1 and 2.5 cm from the LED .
  • the optical element 21 is maintained in place by a waveguide 22 for the light beam emitted by the LED.
  • the function of this waveguide 22 is to direct the light beam emitted by the LED onto the optical element 21.
  • the waveguide 22 has a substantially frustoconical extension and its minor base placed close to the LED.
  • the waveguide is made of a fireproof material, preferably polycarbonate.
  • the optical elements 21 of the optical conveyor means 20 of the same set of LEDs lOa-lOc are different from each other, i.e. have different optical properties.
  • the optical elements 21 of the LEDs disposed close to vertex V of the spherical cap C have a substantially flat first surface facing LEDs lOa-lOc and a second prism-like surface 24 opposite to the first surface. Therefore, the light beams generated by LEDs lOa-lOc initially strike on the first surface and are submitted in cascade to the action of the second surface 24.
  • prism-like surface it is intended any surface having one or more inclined portions relative to said first surface, so as to create phenomena of refraction and/or reflection and/or diffraction and/or polarisation of light beams incident on the first surface.
  • the prism-like surface 24 is defined by a plurality of prismatic elements 24a disposed close to each other, each of which is defined by at least three side surfaces 24b that are inclined to the first surface and converge at an ideal vertex placed on the opposite side from the first surface.
  • the prism-like surface 24 can be defined by a plurality of right pyramids or truncated right pyramids, disposed close to each other and the base of which is parallel to the first surface.
  • the base of said pyramids or truncated pyramids can be hexagonal for example, preferably in the form of a regular hexagon (as shown in Fig. 3) .
  • each pyramid or truncated pyramid is included between 0.5 mm and 1 mm and is of 0.8 mm, for example.
  • the angle formed by each edge of the pyramid or truncated pyramid (not belonging to the base of same) with the respective base surface is included between 40° and 50°, and is preferably of 45°.
  • the optical elements 21 of the LEDs disposed close to base B of the spherical cap C have a substantially flat first surface facing the LED lOa-lOc (as in the case of the optical elements of the LEDs disposed close to vertex V) , and a second surface 24 also substantially flat (unlike the optical elements of the LEDs disposed close ' to vertex V) opposite to the first surface.
  • the second surface 24 can be slightly curved or convex, due to the working effects • resulting from the manufacturing steps of the optical elements .
  • second surface 24 of the optical element 21 i.e. a flat or prismatic surface
  • the latter is preferably at least partly transparent to the visible light, i.e. the light beams generated by LEDs lOa-lOc.
  • the optical element 21 is advantageously made of fireproof material; for instance, the optical element 21 is made of polycarbonate.
  • Each optical conveyor means 20 comprises at least three, preferably four, support props 25 to engage the optical element 21 ' with the LED at a predetermined position (the one described above) .
  • Each set lla-llc of LEDs 10a-10c is mounted on a respective supporting surface 40a-40c. This means that LEDs lOa-lOc belonging to different sets are mounted on dedicated supporting surfaces. In particular, through the suitable arrangement and shape of the supporting surfaces 40a- 4Oc 7 the inclination of the main lighting directions Da-Dc are determined. In fact, the main lighting direction of each LED is preferably perpendicular to the supporting surface portion on which the LED is mounted.
  • Each supporting surface 40a-40c extends along said strip of cap surface.
  • each supporting surface 40a-40c is of a substantially plate- like conformation and has a respective curvilinear or broken major-extension direction Wa-Wc.
  • LEDs lOa-lOc are preferably aligned along the major- extension direction W of the respective supporting surface 40a-40c.
  • the latter have a plurality of holes 41, preferably of the through type (see Fig. 2) .
  • the optical conveyor means of each LED in engagement with said holes 41 also is the optical conveyor means of each LED.
  • the LEDs can be directly connected to said holes 41, if no optical conveyor means 20 is provided.
  • the LEDs or the optical conveyor means 20 can engage all holes 41 or only some of holes 41, so as to make a configuration in which empty spaces are present between adjacent LEDs or optical conveyor means (possibly to be engaged by other LEDs. or optical conveyor means 20) .
  • four holes 41 for each optical conveyor means 20 are provided for receiving the four support props 25 in engagement.
  • the supporting surfaces 40a-40c are connected to each other at respective portions 42 substantially coincident with vertex V of the spherical cap C (see Figs. 1 and 2) . This means that the supporting surfaces 40a-40c are linked to each other so as to form a single piece preferably obtained by blanking.
  • the supporting surfaces 4Oa-4Oc have such a thickness that they can become deformed and take the mentioned configuration.
  • the lighting apparatus further comprises a mounting body 30 on which the supporting surfaces 4Oa-4Oc carrying LEDs 10a-10c are mounted.
  • the mounting body 30 is a part of the supporting surfaces 4Oa-4Oc carrying LEDs 10a-10c.
  • Fig. 4 substantially has the shape of a preferably spherical cap and comprises an inner surface, i.e. the concave surface of the cap, and an outer surface 30a (see Fig. 5) . i.e. the convex surface of the cap.
  • the cap defined by the mounting body 30 can be a spherical cap and in particular a hemispherical cap.
  • the supporting surfaces 40a-40c are in engagement with the mounting body 30 on the inner surface of the latter.
  • the -mounting body 30 is preferably part of a box-shaped body 50 and is engaged with an optical screen 60 to define a closed volume in which the sets of LEDs lla-lie are contained (Fig. 4) .
  • the optical screen 60 has a substantially planar extension; practically, the optical screen 60 can have a plate-like structure with a preferably circular configuration in plan view.
  • the optical screen 60 is operatively associated with all LEDs 10a-10c of apparatus 'i; in other words, the optical screen 60 is employed for acting on the light beams generated by the different
  • the optical screen 60 has a substantially flat first surface facing LEDs lOa-lOc and a second surface 62 opposite to the first surface. Therefore, the light beams generated by LEDs lOa-lOc initially strike on the first surface of the optical element 21, are submitted to the action of the second surface 24 of the optical element 21, subsequently strike on the first surface 61 of the optical screen 60 and are submitted to ' the action of the second surface 62 of the optical screen
  • the second surface 62 is defined by a plurality of prismatic elements 62b disposed close to each other, each of which is defined by at least three side surfaces 62c inclined to the first surface
  • the prism-like surface 62 can be defined by a plurality of right or truncated right pyramids disposed close to each other and the base of which is parallel to the first surface 61.
  • the base of these pyramids or truncated pyramids can for example be a square or hexagonal base (as shown in Figs . 6 and 6a) and preferably has the shape of a regular hexagon.
  • each pyramid or truncated pyramid is included between 1.5 and 2.5 mm, and is of 2 mm, for example.
  • the distance between the base of the pyramids or truncated pyramids and the first surface 21 of the optical element 20 is included between 1.5 mm and 3 mm, and is of 2 mm, for example.
  • the angle formed by each edge of said pyramid or said truncated pyramid (not belonging to the base of same) with the respective base surface is included between 40° and 50°, and is preferably of 45°.
  • the * , prism-like surface portions consist of a succession of pairs of surfaces 62a inclined to the first surface 61, in which the inclined surfaces 62a of the same pair converge away from the first surface 61; more particularly, the inclined surfaces 62a have the same longitudinal major- extension direction (as shown in Figs. 7 and 7a) .
  • each pair of converging inclined surfaces 62a is included between 60° and 120°, and preferably between 80° and 100°.
  • this angle can be of 90°.
  • the distance between the line on which the inclined surfaces 62a converge and the plane defined by the edges of said surfaces 62a opposite to the convergence lines is included between 1.5 mm and 3 mm and is of 2 mm, for example.
  • the distance between the first surface 61 and the plane defined by the edges of surfaces 62a opposite to the convergence lines is included between 1.5 mm and 3 mm and is of 2 mm, for example.
  • the prism-like surface has a zigzag extension defined by said inclined surfaces 62a.
  • the second surface 62 is substantially flat and smooth.
  • the choice of the second-surface type i.e. a flat or prism-like surface, is a function of the type of lighting that is wished to be obtained.
  • the LEDs lOa-lOc of each set have main lighting directions Da-Dc forming decreasing angles with the first surface 61 of the optical screen 60 starting from vertex V of the spherical cap C towards base B of same.
  • the optical screen 60 is advantageously made of a fireproof material; for instance, the optical element 60 can be made of polycarbonate.
  • the mounting body 30 can be suitably arranged so as to fasten apparatus 1 to the ceiling of a closed volume or to a suitable supporting structure.
  • the mounting body 30 comprises a preferably spherical further cap 31 which is substantially concentric with the first cap 30.
  • the second cap 31 fully surrounds the first cap 30 and a hollow space 32 preferably filled with a thermally insulating material is provided between the two caps 30, 31.
  • This hollow space 32 can be also filled with air, for example.
  • the function of the hollow space is to protect LEDs 10a-10c mounted on the first cap 30, from heat transmitted from the sunbeams, for example.
  • pair of caps 30, 31 can also be used for lighting apparatuses other than apparatus 1.
  • one or more lighting elements preferably in the form of a LED
  • a second cap 31 at least partly and preferably fully surrounding said first cap 30.
  • the two caps 30, 31 are preferably substantially concentric; in particular, the two caps 30, 31 can be spherical caps.
  • apparatus 1 further comprises an electric feeding unit to feed the LEDs 10a-10c with the necessary power supply for correct operation.
  • the feeding unit 70 can be associated with a control circuit 80 for selective feeding of said LEDs lOa-lOc; in more detail, the control circuit 80 can allow one or more sets lla-lie of LEDs that have to be fed to be selected, while the LEDs belonging to other sets are, on the contrary, maintained switched off.
  • LEDs 10a-10c are current- controlled.
  • the different sets of LEDs are powered in parallel, so that a possible fault or malfunction to a LED or set of LEDs does not impair, correct feeding of the LEDs belonging to other sets.
  • the feeding unit 70 and/or control circuit 80 are mounted on said mounting surface 30.
  • both the feeding unit 70 and control circuit 80 are represented as blocks ⁇ external to the box-shaped body 50 only for the sake of clarity; actually, as described above, both the feeding unit 70 and control circuit 80 can be housed in said closed volume or in the hollow space 32 between the two spherical caps 30, 31.
  • control circuit 80 is operable by a user, through one or more switches or similar command means, for determining which LED set/sets is/are to be fed.
  • the invention achieves important advantages .
  • the apparatus of the invention enables an acceptable lighting of areas of predetermined width to be obtained, with a reduced energy consumption.
  • said lighting obtained through the apparatus of the present invention is uniform and homogeneous .

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Optics & Photonics (AREA)
  • General Engineering & Computer Science (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Abstract

L'invention porte sur un appareil d'éclairage à DEL comprenant au moins trois ensembles de DEL (lla-llc), disposés chacun le long d'une bande s'étendant sensiblement du sommet (V) d'une calotte sphérique (C) à la base (B) de celle-ci. Les trois ensembles de DEL (lla-llc) sont séparés les uns des autres d'une même distance et disposés de manière à ce que la direction principale d'éclairage (Da-Dc) des DEL (lOa-lOc) soit face à la zone (100) à éclairer. Chaque DEL (lOa-lOc) possède son propre moyen de guidage optique.
PCT/IT2008/000219 2008-04-02 2008-04-02 Appareil d'éclairage à del Ceased WO2009122453A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/IT2008/000219 WO2009122453A1 (fr) 2008-04-02 2008-04-02 Appareil d'éclairage à del

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/IT2008/000219 WO2009122453A1 (fr) 2008-04-02 2008-04-02 Appareil d'éclairage à del

Publications (1)

Publication Number Publication Date
WO2009122453A1 true WO2009122453A1 (fr) 2009-10-08

Family

ID=39712036

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IT2008/000219 Ceased WO2009122453A1 (fr) 2008-04-02 2008-04-02 Appareil d'éclairage à del

Country Status (1)

Country Link
WO (1) WO2009122453A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9555610B2 (en) 2014-03-10 2017-01-31 Forever Bulb, Llc LED light bulb with internal flexible heatsink and circuit

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5838247A (en) * 1997-04-01 1998-11-17 Bladowski; Witold S. Solid state light system
US6150774A (en) * 1997-08-26 2000-11-21 Color Kinetics, Incorporated Multicolored LED lighting method and apparatus
DE20104820U1 (de) * 2001-03-20 2001-08-02 Martin, Wolfgang, 78532 Tuttlingen Beleuchtungseinrichtungen
GB2373569A (en) * 2001-03-22 2002-09-25 Altman Stage Lighting Co Inc Variable beam lamp with LED light source
US6705745B1 (en) * 1999-06-08 2004-03-16 911Ep, Inc. Rotational led reflector
US20050174769A1 (en) * 2003-02-20 2005-08-11 Gao Yong LED light bulb and its application in a desk lamp
WO2005090852A2 (fr) * 2004-03-18 2005-09-29 Lighting Science Group Corporation Element d'eclairage utilisant des elements electroluminescents a commande electronique et procede de fabrication dudit element
US20060193130A1 (en) * 2005-02-28 2006-08-31 Kazuo Ishibashi LED lighting system
WO2007058561A1 (fr) * 2005-11-15 2007-05-24 Zakrytoe Aktsionernoe Obschestvo Zavod Ema Appareil d'eclairage

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5838247A (en) * 1997-04-01 1998-11-17 Bladowski; Witold S. Solid state light system
US6150774A (en) * 1997-08-26 2000-11-21 Color Kinetics, Incorporated Multicolored LED lighting method and apparatus
US6705745B1 (en) * 1999-06-08 2004-03-16 911Ep, Inc. Rotational led reflector
DE20104820U1 (de) * 2001-03-20 2001-08-02 Martin, Wolfgang, 78532 Tuttlingen Beleuchtungseinrichtungen
GB2373569A (en) * 2001-03-22 2002-09-25 Altman Stage Lighting Co Inc Variable beam lamp with LED light source
US20050174769A1 (en) * 2003-02-20 2005-08-11 Gao Yong LED light bulb and its application in a desk lamp
WO2005090852A2 (fr) * 2004-03-18 2005-09-29 Lighting Science Group Corporation Element d'eclairage utilisant des elements electroluminescents a commande electronique et procede de fabrication dudit element
US20060193130A1 (en) * 2005-02-28 2006-08-31 Kazuo Ishibashi LED lighting system
WO2007058561A1 (fr) * 2005-11-15 2007-05-24 Zakrytoe Aktsionernoe Obschestvo Zavod Ema Appareil d'eclairage

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9555610B2 (en) 2014-03-10 2017-01-31 Forever Bulb, Llc LED light bulb with internal flexible heatsink and circuit

Similar Documents

Publication Publication Date Title
EP2721340B1 (fr) Luminaire à éclairage périphérique incorporant un plafonnier intensif et ayant un aspect extérieur uniforme
CN102844620B (zh) 面照明器具和面照明装置
US8113680B2 (en) Light fixture with directed LED light
EP2721339B1 (fr) Panneau lumineux éclairé par le bord comportant un éclairage vers le bas à l'intérieur d'une indentation garnie ménagée dans le panneau
KR100931266B1 (ko) 넓고 균일한 배광을 가지는 실내용 ｌｅｄ 조명
CN102844614A (zh) 照明装置
JP2009252375A (ja) 照明装置
JP5042173B2 (ja) 均一な光分布を有する省エネ型ランプシェード
US20240410538A1 (en) A tile light luminaire for a suspended tile light ceiling assembly, as well as such suspended tile light ceiling assembly
JP5302421B2 (ja) 屋内照明装置および内部空間を照明する方法
KR101059235B1 (ko) 엘이디 전구용 광확산 렌즈
US7631980B2 (en) Luminaire and a lighting panel for a luminaire
KR101863646B1 (ko) 도광판을 이용한 조명장치
JP3176534U (ja) ウォールウォッシュライトおよび照明システム
US20100027267A1 (en) Refractor and lighting apparatus
GB2468118A (en) Light emitting diode lighting device employing multiple reflectors
WO2009122453A1 (fr) Appareil d'éclairage à del
EP2191191A1 (fr) Dispositif d'éclairage à del
CN201462499U (zh) 一种led平面光源结构
EP3655694B1 (fr) Module d'éclairage
JP2004335469A (ja) 反射照明装置とその方法
EP2309174A1 (fr) Dispositif d'éclairage
EP2596282B1 (fr) Module d'éclairage à émission optimisée, en particulier pour éclairage de route
KR101368973B1 (ko) 엘이디 조명등
KR101448389B1 (ko) 광 분산 제어판을 가진 고효율 엘이디 배광 모듈

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 08763793

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 08763793

Country of ref document: EP

Kind code of ref document: A1