WO2017176162A1 - Luminaire à diodes lumineuses - Google Patents

Luminaire à diodes lumineuses Download PDF

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Publication number
WO2017176162A1
WO2017176162A1 PCT/RU2017/000178 RU2017000178W WO2017176162A1 WO 2017176162 A1 WO2017176162 A1 WO 2017176162A1 RU 2017000178 W RU2017000178 W RU 2017000178W WO 2017176162 A1 WO2017176162 A1 WO 2017176162A1
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WIPO (PCT)
Prior art keywords
leds
plates
reflective
reflective plates
reflector
Prior art date
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Ceased
Application number
PCT/RU2017/000178
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English (en)
Russian (ru)
Inventor
Александр Сергеевич САУШИН
Геннадий Михайлович МИХЕЕВ
Алексей Михайлович ЛЕЩЕВ
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Individual
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Individual
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Publication of WO2017176162A1 publication Critical patent/WO2017176162A1/fr
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Ceased legal-status Critical Current

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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
    • F21K9/60—Optical arrangements integrated in the light source, e.g. for improving the colour rendering index or the light extraction
    • F21K9/68—Details of reflectors forming part of the light source
    • 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
    • F21V7/00—Reflectors for light sources
    • F21V7/04—Optical design
    • F21V7/05—Optical design plane

Definitions

  • the invention relates to lighting engineering, in particular to energy-saving lighting devices created on the basis of high-power LEDs with a long service life. It can be used to create non-blinding illuminators for lighting rooms, such as living rooms, office rooms, driveways, as well as for street lighting and highway lighting.
  • Known LED lamp (Utility Model RU 1 10816 U1), comprising a housing of heat-conducting material, located in the housing at least one light source made of one or a group of LEDs, two covers mounted on the ends of the housing, a front panel with at least , one transparent optical element located opposite the light source, forming the luminous flux of the lamp, and a power source, characterized in that at least on one outer surface of the housing longitudinal ribs are made, the diodes are located on at least one printed circuit board mounted on the inner surface of the housing with the possibility of efficient heat transfer, the optical element is formed by a protective glass having local and / or regular changes in curvature, and / or thickness, and / or optical properties, on the covers ribs are made, repeating the shape of the ribs of the housing, the lamp is equipped with an additional housing, and the power source is placed in an additional housing.
  • an optical element in the form of a Fresnel lens or perform microprisms on the glass surface of the optical element; or perform group lenses on the glass of an optical element on all or part of the LEDs; or perform on the glass of the optical element of the lens or group of lenses located above each or part of the LEDs.
  • An obvious design flaw is the difficulty in manufacturing associated with the complexity of manufacturing the mentioned optical elements (Fresnel lenses, microprisms, group lenses, lenses and lens groups located above each or part of the LEDs).
  • a known lamp with reflectors (IPC F21S8 / 10 (2006.01), RU 2401395 C1) comprising a housing with a board on which three rows of LED lamps are mounted, a power supply located in the housing, and having reflective plates with high reflectivity installed behind first row at an angle of 60 ° to plane of the board, behind the second row - at an angle of 45 ° to the plane of the board and behind the third row - at an angle of 90 ° to the plane of the board.
  • Such a lamp has a reduced blinding effect when it is located relatively far away from the lighted point, that is, when it is used to illuminate open spaces, access roads of vehicles, in quarries, moorings, etc.
  • the disadvantage of this device is the inability to use it indoor because of the high glare, as the use of reflective plates does not affect the brightness of LEDs in certain directions.
  • a car lamp comprising a device for distributing light, producing a parallel light flux, which is then removed from the lamp through a plurality of partially transmission plates located at an angle to the light passing through them.
  • partially transmitting plates can be located at different angles to the incident radiation, which allows you to change the radiation pattern.
  • On each plate only part of the light flux is reflected, which significantly reduces the blinding effect of the light source.
  • the disadvantage is that the luminous flux of the source is distributed unevenly over the output window, in addition, in this patent, from the various options for the arrangement of the plates, neither the optimal law nor the general regularity of their arrangement relative to each other, which would ensure the most uniform distribution of the light flux and lighting all directions.
  • the closest design adopted as the prototype is an LED lamp (F21V7 / 00 (2006.01), RU 2543513 C1) containing a power supply; housing; diffuser cover; reflector plates; fee; LEDs end and front reflective plates with a high light reflectance.
  • translucent plates are located at such angles that, thanks to the laws of Fresnel reflection, exactly the same amount of light is reflected on each subsequent plate as on the previous one.
  • the light emitting diodes are evenly distributed over the diffuser cover and the blinding effect is eliminated most effectively.
  • the disadvantage of this lamp is that in order to obtain a uniform intensity distribution over the diffuser cover, it is required that the angle of incidence of light on each subsequent plate, if counted from the LEDs, be greater than the previous one. This leads to the fact that such a lamp does not provide uniform illumination in all directions.
  • the technical result of the invention is to eliminate the blinding effect of LEDs and ensure uniform illumination.
  • an LED luminaire comprising a housing, LEDs, a diffuser cover, reflective plates mounted in such a way that at least a portion of the reflective plates have surfaces facing the LEDs that are not obscured by the LED radiation from the reflective plates (otherwise, blocked by reflecting plates) located closer to the LEDs, along the propagation of the light flux from the LEDs.
  • LEDs are mounted on a board perpendicular to the frontal plane of the projection of the housing and inclined to the diffuser cover, with the central rays of the LEDs facing the front of the reflective plate.
  • the front reflective plate installed between the reflector plates and the body has an arcuate reflective profile. Reflective plates are made in the form of plates with curved reflective surfaces. Reflecting plates have a thickness different in cross section. Reflective plates are adjacent to the diffuser cover.
  • the reflecting plates and the diffuser cover are made as a single part. It contains an end reflective plate and a front reflective plate made in the form of a single part. An external device is used for power supply.
  • FIG. 1 shows an example of an LED luminaire equipped with five reflector plates made in the form of optically transparent plates adjacent to the diffuser cover, and the path of light radiation reflected from the first reflector plate to the diffuser cover: 1 - power supply unit; 2 - case; 3 - front reflective plate, 4 - board, 5 - LEDs, 6 - diffuser cover; 7-1, 7-2, ... 7-5 - reflector plates; 8 - end reflective plate; ⁇ , ⁇ 2 , ⁇ 3 , at A, at 5 are the angles between the diffuser cover and the first, second, fifth reflector plates, respectively, counted from the LEDs, and ⁇ is the angle between the diffuser cover and the end reflective plate.
  • FIG. 2 shows an example of an LED luminaire equipped with five reflector plates made in the form of optically transparent plates adjacent to the diffuser cover, and the path of light radiation reflected from the second reflector plate to the diffuser cover: 1 - power supply unit; 2 - case; 3 - front reflective plate, 4 - board, 5 - LEDs, 6 - diffuser cover; 7-1, 7-2, ... 7-5 - reflector plates; 8 - end reflective plate; at ⁇ 2 , bonds, 74, At 5 - the angles between the diffuser cover and the first, second, fifth reflector plates, respectively, counted from the LEDs, ⁇ is the angle between the diffuser cover and the end reflective plate.
  • FIG. 3 shows an example of an LED lamp equipped with five reflector plates made in the form of optically transparent plates adjacent to the diffuser cover, and the course of the middle rays reflected from the reflector plates of the end reflective plate to the diffuser cover: 1 - power supply unit; 2 - case; 3 - front reflective plate, 4 - board, 5 - LEDs, 6 - diffuser cover; 7-1, 7-2, ... 7-5 - reflector plates; 8 - end reflective plate; ⁇ 1? ⁇ 2 , ⁇ 3 , ⁇ 4 , ⁇ 5 are the angles between the diffuser cap and the first, second, fifth reflector plates, respectively, counted from the LEDs, ⁇ is the angle between the diffuser cap and the end reflective plate.
  • FIG. 4 shows an example of an LED lamp equipped with five reflector plates made in the form of optically transparent plates adjacent to the diffuser cover, with a board located at an angle to the diffuser cover: 1 - power supply unit; 2 - case; 3 - front reflective plate, 4 - board, 5 - LEDs, 6 - diffuser cover; 7-1, 7-2, ... 7-5 - reflector plates; 8 - end reflective plate; ⁇ , ⁇ 2 , ⁇ 3 , ⁇ 4 , ⁇ 5 are the angles between the diffuser cover and the first, second, fifth reflector plates, respectively, counted from the LEDs, ⁇ is the angle between the diffuser cover and the circuit board with LEDs, ⁇ is the angle between the diffuser cap and the end reflective plate.
  • FIG. 5 shows an example of an LED luminaire equipped with five reflector plates made in the form of optically transparent plates adjacent to the diffuser cover and the course of peripheral rays reflected from the front reflective plate with an arched reflective profile: 1 - power supply unit; 2 - case; 3 - front reflective plate, 4 - board, 5 - LEDs, 6 - diffuser cover; 7-1, 7-2, ... 7-5 - reflector plates; 8 - end reflective plate; ⁇ , ⁇ 2 , ⁇ 3 , ⁇ 4 , ⁇ 5 are the angles between the diffuser cover and the first, second, fifth reflector plates, respectively, counted from the LEDs, ⁇ is the angle between the diffuser cover and the end reflective plate.
  • FIG. 6 shows an example of an LED lamp equipped with five reflector plates made in the form of optically transparent plates with curved reflective surfaces adjacent to the diffuser cover: 1 - block nutrition; 2 - case; 3 - front reflective plate, 4 - board, 5 - LEDs, 6 - diffuser cover; 7-1, 7-2, ... 7-5 - reflector plates; 8 - end reflective plate; ⁇ , ⁇ 2 , ⁇ 3 , ⁇ 4 , ⁇ 5 are the angles between the diffuser cover and the first, second, fifth reflector plates, respectively, counted from the LEDs, ⁇ is the angle between the diffuser cover and the end reflective plate.
  • FIG. 7 shows an example of an LED luminaire equipped with five reflector plates with an unequal cross-sectional thickness, made in the form of optically transparent plates adjacent to the diffuser cover: 1 - power supply unit; 2 - case; 3 - front reflective plate, 4 - board, 5 - LEDs, 6 - diffuser cover; 7-1, 7-2, ... 7-5 - reflector plates; 8 - end reflective plate; y ⁇ , ⁇ 2 , ⁇ 3 , ⁇ 4 , ⁇ 5 are the angles between the diffuser cover and the first, second, fifth reflector plates, respectively, counted from the LEDs, and ⁇ is the angle between the diffuser cover and the end reflective plate.
  • FIG. 8 shows an example of an LED lamp equipped with five reflector plates made as a single part with a diffuser cover: 1 - power supply unit; 2 - case; 3 - front reflective plate, 4 - board, 5 - LEDs, 6 - diffuser cover; 7-1, 7-2, ... 7-5 - reflector plates; 8 - end reflective plate; ⁇ 1? ⁇ 2 , ⁇ 3 , ⁇ 4 , ⁇ 5 are the angles between the diffuser cap and the first, second, fifth reflector plates, respectively, counted from the LEDs, ⁇ is the angle between the diffuser cap and the end reflective plate.
  • the LED lamp includes a power supply 1, housing 2, front reflective plate 3, board 4, LEDs 5, diffuser cover 6, reflective plates 7 (reflector plates 7) having different projection surfaces of reflective surfaces onto a plane simultaneously perpendicular to the plane of the diffuser and the frontal plane of the projection of the housing, the end reflective plate 8.
  • the reflecting plates 7 are installed in such a way that at least part of the reflecting plates 7 have surfaces that are not obscured by the radiation of the LEDs by the reflecting plates (not covered by the reflecting plates 7) located closer to the LEDs 5, along the propagation of the light flux from the LEDs 5.
  • reflective plates the term “reflector plates” is also used hereinafter
  • Si, S 2 , S3, S n - b S n are the areas of the first, second, third, ..., ⁇ -first and ⁇ -th projections of the reflecting surfaces of the plates -reflectors 7, counted from the board with light-emitting diodes, and the reflector plates are adjacent to the diffuser cover.
  • the board 4 with LEDs 5 can be installed perpendicular to the frontal plane of projection of the housing 2 and inclined to the diffuser cover, with the central rays of the LEDs 5 facing the front of the reflective plate 3.
  • the LEDs 5 are mounted on the board 4, perpendicular to the frontal plane of the projection of the housing and inclined to the diffuser cover 6, the central rays of the LEDs facing the front reflective plate 3.
  • the front reflective plate 3, mounted between the reflector plates 7 and the housing 2, may have arcuate reflective profile.
  • Reflective plates can be made in the form of plates with curved reflective surfaces. Reflecting plates may have a thickness of a different cross section. Reflective plates may abut the diffuser cover. Reflecting plates and a diffuser cover can be made as a single part. An external device is used for power supply.
  • LED lamp works as follows. When the power supply is turned on, the LEDs located on the board turn on. They begin to radiate light.
  • the blinding effect of a light source is determined by its brightness. The greater the brightness, the higher the glare effect. Brightness is the luminous flux sent by a unit of visible surface area in a given direction to a unit solid angle. Therefore, at a given power of the light source, its brightness is inversely proportional to the area of the emitting surface.
  • the visible radiating surface of the lamp for the observer in this case will be a diffuser cover. Therefore, to eliminate the blinding effect, it is necessary to evenly distribute the light flux from the LEDs on the diffuser cover.
  • this problem is solved using reflector plates, which also create the necessary radiation pattern of the entire lamp. Therefore, each reflector plate is positioned at such an angle to direct a certain amount of light flux at a certain angle to a specific area of the diffuser cover.
  • Each of the n reflector plates should reflect the same amount of light flux ⁇ 0 , which is determined by the number of reflector plates.
  • the reflector plates at each point will have different reflection coefficients.
  • the intensity of each beam at each point of the reflector plate will also vary. Therefore, to explain the operation of the LED lamp according to this invention, it will be convenient to use averaged values.
  • I is the average light flux density (light intensity) incident on the first reflector plate
  • r! - the average coefficient of light reflection from the first reflector plate, taking into account reflection from two media boundaries for a given angle ⁇ .
  • the luminous flux is partially attenuated by the first reflector plate.
  • the averaged reflection coefficient from the second plate r 2 is predetermined by the orientation of the second reflector plate.
  • the second reflector plate should have a larger projection area of the reflecting surface S 2 .
  • the reflection of radiation from the second reflector plate is shown in FIG. 2.
  • the third reflector plate will have to have a projection area of the reflecting surface S 3 > S 2
  • the fourth plate with an area of S 4 > S 3 and so on. Due to the fact that the farther away from the LEDs the reflector plate is, the larger the projection area of its reflecting surface will be, light from the LEDs will be reflected in equal parts from the reflector plates.
  • the diffuser cover has a matte surface and is designed for scattering and depolarization of radiation, which further reduces the blinding effect of the lamp.
  • the LED radiation will be equally distributed between all reflector plates and the end reflective plate, resulting in the brightness of the lamp to decrease at least n + 1 times and the blinding effect will be eliminated, while the total luminous flux of the lamp practically does not decrease.
  • Reflector plates in the LED lamp according to this invention depending on the dimensions of the lamp, type and characteristics of LEDs, etc. can be located at different angles ⁇ in the range 0 ⁇ ⁇ 90 °.
  • the distribution of the light flux of the radiation of each LED in space is determined by its radiation pattern, i.e., the density of the light flux in different directions of the LED radiation will vary.
  • the central beam of an LED has a higher flux density than peripheral ones. Since I]> 1 p , to reduce the difference Ii - I n, the board with LEDs can be placed at an angle ⁇ to the housing so that the beam with the maximum light flux density is directed to the reflector plates located near the end reflective plate, bypassing near reflector plates (Fig. 4). Due to this, radiation with a lower flux density will fall on the reflectors closest to the LEDs of the plate, which further increases the uniformity of illumination on the diffuser cover, reducing the blinding effect of the lamp.
  • the front reflective plate is used to reflect radiation falling on the inner surface of the housing. Its arcuate reflective profile provides the re-reflection of the peripheral rays of the LEDs on the reflector plates located near the end reflective plate (see Fig. 5). To simplify the design and reduce the cost of production, the front reflective plate can be made in the form of a single part with the end reflective plate.
  • the reflector plates may have curved reflective surfaces or uneven cross sectional thickness. Examples of luminaires with reflector plates having curved surfaces and uneven cross-sectional thicknesses are shown in Fig. 6 and Fig. 7, respectively.
  • the number of LEDs can be from one to several tens or more. They can be located in one or more rows. Light diodes on the board can also be arranged out of order.
  • Reflector plates can be made of optical material with a reflective coating that provides the necessary reflection coefficients. If reflector plates are made in the form of optically transparent plates, they can be made of any material transparent to visible light, for example, glass or polycarbonate. To simplify the design, the reflector plates and the diffuser cover can be manufactured in one piece (Fig. 8), for example, by extrusion.

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

Abstract

L'invention concerne des équipements d'éclairage et notamment des dispositifs d'éclairage à économie d'énergie créés sur la base de puissantes diodes électroluminescentes à longue durée de vie. Elle peut être utilisée pour créer des dispositifs d'éclairage sans effet aveuglant pour éclairer des locaux tels que les chambres d'habitation, des bureaux, des zones d'accès en véhicule ainsi que pour l'éclairage de rues et d'autoroutes. Le résultat technique consiste à réduire l'effet aveuglant des diodes électroluminescentes et assurer un éclairage régulièrement réparti. Le luminaire à diodes électroluminescentes comprend un corps, des diodes électroluminescentes, un couvercle dissipateur, des plaquettes réfléchissantes montées de manière à ce qu'une partie des plaquettes réfléchissantes possède des parties orientées vers les diodes électroluminescentes qui ne soient pas bloquées par rapport au rayonnement des diodes électroluminescentes par les plaquettes réfléchissantes (non recouvertes par celles-ci) qui sont disposées proches des diodes électroluminescentes, dans le sens de propagation du flux lumineux des diodes électroluminescentes. Les diodes électroluminescentes sont montées sur une carte perpendiculaire à la surface de front de la projection du corps et inclinée par rapport au couvercle dissipateur, les rayons centraux des diodes électroluminescentes étant orientés vers la plaquette réfléchissante d'extrémité. La plaquette réfléchissante de face montée entre les plaquettes réfléchissantes et le corps possède un profil réfléchissant en arc de cercle. Les plaquettes réfléchissantes se présentent comme des plaquettes avec des surfaces réfléchissantes curvilignes. Les plaquettes réfléchissantes ont une épaisseur différente en coupe transversale. Les plaquettes réfléchissantes adhèrent à un couvercle dissipateur. Les plaquettes réfléchissantes et le couvercle dissipateur sont réalisés d'un seul tenant. Le dispositif comprend une plaquette réfléchissante et une plaquette réfléchissante faciale qui se présentent comme une seule pièce. Pour l'alimentation électrique on utilise un dispositif externe.
PCT/RU2017/000178 2016-04-05 2017-03-29 Luminaire à diodes lumineuses Ceased WO2017176162A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
RU2016112909A RU2016112909A (ru) 2016-04-05 2016-04-05 Cветодиодный светильник
RU2016112909 2016-04-05

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WO2017176162A1 true WO2017176162A1 (fr) 2017-10-12

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4929866A (en) * 1987-11-17 1990-05-29 Mitsubishi Cable Industries, Ltd. Light emitting diode lamp
US20050073229A1 (en) * 2002-10-10 2005-04-07 Fer Fahrzeugelektrik Gmbh Lamp
RU2358301C2 (ru) * 2003-09-10 2009-06-10 Лумус Лтд. Оптические устройства со световодной подложкой
EP2209102A1 (fr) * 2007-10-29 2010-07-21 Sharp Kabushiki Kaisha Dispositif d'affichage
US8418385B2 (en) * 2010-09-06 2013-04-16 Michael Roger Olson Lighting device
RU2543513C1 (ru) * 2012-08-13 2015-03-10 Геннадий Михайлович Михеев Светодиодный светильник

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4929866A (en) * 1987-11-17 1990-05-29 Mitsubishi Cable Industries, Ltd. Light emitting diode lamp
US20050073229A1 (en) * 2002-10-10 2005-04-07 Fer Fahrzeugelektrik Gmbh Lamp
RU2358301C2 (ru) * 2003-09-10 2009-06-10 Лумус Лтд. Оптические устройства со световодной подложкой
EP2209102A1 (fr) * 2007-10-29 2010-07-21 Sharp Kabushiki Kaisha Dispositif d'affichage
US8418385B2 (en) * 2010-09-06 2013-04-16 Michael Roger Olson Lighting device
RU2543513C1 (ru) * 2012-08-13 2015-03-10 Геннадий Михайлович Михеев Светодиодный светильник

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