EP3726126B1 - Appareil d'éclairage à diode électroluminescente tubulaire - Google Patents

Appareil d'éclairage à diode électroluminescente tubulaire Download PDF

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Publication number
EP3726126B1
EP3726126B1 EP19211941.0A EP19211941A EP3726126B1 EP 3726126 B1 EP3726126 B1 EP 3726126B1 EP 19211941 A EP19211941 A EP 19211941A EP 3726126 B1 EP3726126 B1 EP 3726126B1
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EP
European Patent Office
Prior art keywords
strip
led light
light fixture
tubular led
light source
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.)
Active
Application number
EP19211941.0A
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German (de)
English (en)
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EP3726126A1 (fr
Inventor
Zhaoyong Zheng
Feng JI
Huangfeng PAN
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.)
Ningbo Self Electronics Co Ltd
Self Electronics Germany GmbH
Original Assignee
Ningbo Self Electronics Co Ltd
Self Electronics Germany GmbH
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
Priority claimed from CN201910320227.7A external-priority patent/CN110131619A/zh
Application filed by Ningbo Self Electronics Co Ltd, Self Electronics Germany GmbH filed Critical Ningbo Self Electronics Co Ltd
Publication of EP3726126A1 publication Critical patent/EP3726126A1/fr
Application granted granted Critical
Publication of EP3726126B1 publication Critical patent/EP3726126B1/fr
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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
    • F21K9/20—Light sources comprising attachment means
    • F21K9/27—Retrofit light sources for lighting devices with two fittings for each light source, e.g. for substitution of fluorescent tubes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V5/00—Refractors for light sources
    • F21V5/002—Refractors for light sources using microoptical elements for redirecting or diffusing light
    • F21V5/004—Refractors for light sources using microoptical elements for redirecting or diffusing light using microlenses
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V5/00—Refractors for light sources
    • F21V5/007—Array of lenses or refractors for a cluster of light sources, e.g. for arrangement of multiple light sources in one plane
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V5/00—Refractors for light sources
    • F21V5/04—Refractors for light sources of lens shape
    • F21V5/043—Refractors for light sources of lens shape the lens having cylindrical faces, e.g. rod lenses, toric lenses
    • 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
    • F21Y2103/10—Elongate light sources, e.g. fluorescent tubes comprising a linear array of point-like light-generating elements
    • 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 lighting technology field, with particular emphasis on a tubular LED light fixture.
  • LED lamps are more and more applied in the field of home and commercial lighting due to their high light emitting efficiency and good focusing performance.
  • LED lamps on the market mainly use point source illumination.
  • This type of illumination has problems of glare and reflection glare.
  • researchers have tried to replace the point source with linear light source, generally adopting a method of adding a diffusion lamp cover, the diffusion lamp cover diffuses light from the LED, but because the diffusion direction is not single, the linear light source is imaged and blurred, and the formed linear light source is directly used to illuminate the illuminated surface, the light distribution effect is not good, and the energy attenuation is more, so that the formation linear light source is dim and cluttered, and the illumination that is ultimately projected onto the illuminated surface is uneven, resulting in poor illumination.
  • the present invention provides a tubular LED light fixture to solve the above technical problems.
  • a tubular LED light fixture comprises:
  • the strip-shaped convex lens array is a positive cylindrical lens microarray arranged on an optical thin film.
  • the strip-shaped convex lens array is a positive cylindrical lens microarray array.
  • the strip-shaped convex lens array being positive cylindrical lens array, the structure is flat, in order to adapt to different lamp structure, advantageously, the strip-shaped convex lens array is a curved surface that is curved in the length direction of the strip-shaped convex lens.
  • the strip-shaped convex lens array can be used directly as a lamp shade.
  • the reflection wall is provided on both sides of the point light source for reflecting the lateral light from the point light source to the light incident plane of the strip-shaped convex lens array.
  • the reflection wall and the mounting surface of the point light source is arranged at an obtuse angle.
  • the shape of the lens can be designed according to the light output effect.
  • the lens is a polarizing lens.
  • the lens is a symmetrical lens.
  • the lamp holder comprises two end seats, a strip base and a strip bed plate, and the lens, the reflection wall and the strip bed plate are integrally formed and enclosed to form an mounting cavity.
  • the lamp holder comprises two end seats, a strip base and a strip bed plate, the reflection wall and the strip bed plate are integrally formed, and the inner side of the top of the two reflection walls is provided with a first mounting groove for fixing the strip-shaped convex lens array, and the outer side of the top of the two reflection walls is provided with a buckle structure for fixing the lens, and the bottom of the strip bed plate is provided with a second mounting groove for fixing the printed circuit board.
  • the lamp holder comprises:
  • the inner side of the upper end of the strip base is provided with a first mounting groove
  • the outer side of the reflection wall is provided with a convex edge that matches with the first mounting groove
  • the strip-shaped convex lens array is disposed on a top end of the reflection wall.
  • the lens fits with the strip base by clasping.
  • the tubular LED light fixture of the present invention adopts a strip-shaped convex lens array which forms linear light source only by diffusing light from point light source only in the length direction of the light fixture, then it can well prevent the light from diffusing in multiple directions, so that the linear light source is purified, and the arrangement of the lens can perform light distribution on the linear light source in the other direction, thereby reducing the energy attenuation effect, and the secondary light distribution effect of the lens can realize uniform distribution of light as needed, so that the uniformity of illumination tends to 1, thereby improving the light-sweeping effect.
  • the setting of the reflection wall can further improve the light utilization and better ensure the lighting effect.
  • the tubular LED light fixture of the present embodiment comprises lamp holder 100, printed circuit board 200, a plurality of point light sources 300, lens 400, strip-shaped convex lens array 500, and reflection wall 600.
  • the lamp holder 100 is used for fixing and mounting, and can be assembled by a plurality of components according to installation requirements, or can be a single component.
  • the lamp holder 100 comprises two end seats 101, a strip base 102 and a strip bed plate 103. Both ends of the strip base 102 are fixedly connected to the end seat 101.
  • the strip base 102 is provided with a cavity for accommodating the printed circuit board 200, the lens 400 and the reflection wall 600, and the printed circuit board 200, the lens 400 and the reflection wall 600 can be fixed by screws, glue and clasp structure.
  • the two ends of the strip base 102 are connected with the end seat 101 to form a first accommodating cavity 108.
  • the strip bed plate 103 is located at the bottom of the first accommodating cavity 108, and the strip bed plate 103 is connected with the end seat to form a second accommodating cavity 109.
  • the second accommodating cavity 109 is provided for accommodating the printed circuit board 200 and the reflection wall 600.
  • the reflection wall 600 is located above the printed circuit board and on either side of the point light source.
  • the inner side of the upper end of the strip base 102 is provided with a first mounting groove 105.
  • the outer side of the reflection wall 600 is provided with a convex edge 601 matching with the first mounting groove 105.
  • the strip-shaped convex lens array 500 is arranged on the top end of the reflection wall 600, and the Lens 400 fits with the strip base 102 by clamping.
  • a plurality of point light sources 300 are spaced apart from each other along the length direction of the tubular LED light fixture on the light source mounting surface of the printed circuit board 200. Thus, the visual effect of the discontinuous point light source is formed.
  • the LED lamp is more and more applied to the home and commercial lighting field due to its high light extraction efficiency and good light collecting performance, and the point light source 300 is adopted LED chip.
  • the optical axis direction of the point light source 300 is set as the z direction
  • the mounting surface of the point light source 300 is a plane perpendicular to the z direction.
  • the point light source 300 is arranged in the x direction
  • y direction is perpendicular to the x direction.
  • the printed circuit board 200 is also disposed on the mounting surface, and the xyz coordinate system can define an x-y plane, a y-z plane, and an x-z plane.
  • the lens 400 is disposed on the lamp holder 100, specifically, the lens 400 is connected with the strip base 102 by clasping and located in a light-emitting direction of the point light source 300 for adjusting the light distribution of the point light source 300 on the plane (y-z plane) perpendicular to the length direction of the tubular LED light fixture, that is, the dimming in a single plane, and the lens 400 can be easily manufactured by extrusion process or other ways. Since the light distribution of the LED chip itself is not uniform, this causes the linear light source imaged by the strip-shaped convex lens array 500 to have a region with strong brightness and weak brightness. It is easy to understand that the less luminous areas emitted light with less energy, while the more luminous areas emitted light with more energy.
  • the lens 400 preferably adopts an asymmetric lens, and the light in the weak brightness region of the linear light source is emitted from the part of the asymmetric lens that has a strong ability to focus light, while the light in the strong brightness region is emitted from the part of the asymmetric lens that has a weak ability to focus light, in this way, the consistent effect of the emergent light can be reasonably achieved.
  • the lens 400 can only adopt an asymmetrical form, and a symmetrical form can also be used.
  • the brightness of the two ends of the linear light source is brighter, and the brightness toward the middle position is weaker.
  • the middle protruding portion of the lens 400 corresponds to the middle position of the linear light source, and both ends correspond to both ends of the linear light source, so that the light can be uniform.
  • the strip-shaped convex lens array 500 is disposed on the lamp holder 100 and located between the lens 400 and the printed circuit board 200.
  • the strip-shaped convex lens array 500 is arranged along the length direction of the tubular LED light fixture for converting each point light source 300 into a plurality of continuous sub-point light sources, the sub-point light sources converted by the adjacent point source 300 is connected or coincident. It can be seen that before using the strip-shaped convex lens array 500, the point light sources 300 are still point light sources after passing through the lens 400 and become linear light sources while adding the strip-shaped convex lens array 500 they, as shown in FiG.2 .
  • the strip-shaped convex lens in the strip-shaped convex lens array 500 is in the form of a plane of a positive cylindrical lens, or can be a curved surface curved in the length direction of the strip-shaped convex lens, and the effect to be achieved is that the point light source is stretched in the arrangement direction (x direction) of the point light source, so that the point light source forms the line light source while minimizing or eliminating the influence on the point source 300 in other directions.
  • the cross-sectional dimension of the strip-shaped convex lens can be set as needed, and the strip-shaped convex lens array 500 can be obtained by a process such as 3D printing, extrusion or injection molding.
  • the distance between the strip-shaped convex lens array 500 and the point light source 300 and the distance between the adjacent point light sources 300 are controlled by adjusting the radian and radius of the strip-shaped convex lens.
  • the strip-shaped convex lens array 500 can also achieve the same effect by using optical film.
  • the strip-shaped convex lens array 500 is a positive cylindrical lens microarray arranged on the optical thin film, specifically, the optical film is an elliptical light diffusing film, and the model used is E-6010.
  • the model used is E-6010.
  • other models can be selected as long as the point light source 300 is stretched in the arrangement direction (x direction) of the point light source 300.
  • E-1560, E-0160/6001, E-0190 can also be used.
  • the stretching ratio in both directions is greater than 4.
  • the elliptical light diffusing film is a positive cylindrical lens microarray, the length direction of the positive cylindrical lens is perpendicular to the arrangement direction (x direction) of the point light source 300 when used.
  • the strip-shaped convex lens array 500 in the form of film has a small volume, is easy to install, and can be bent to meet different lamp structure requirements.
  • the reflection wall 600 is provided on both sides of the point light source 300 for reflecting the lateral light from the point light source 300 to the light incident plane of the strip-shaped convex lens array 500.
  • the absence of the reflection wall 600 does not affect the use of the tubular LED light fixture, that is, the reflection wall 600 is not an essential functional component, the upper end of the reflection wall 600 extends to the bottom surface of the strip-shaped convex lens array 500, and the point light source 300 is disposed on the printed circuit board 200, most of the light is emitted toward the strip-shaped convex lens array 500, but a small portion of the lateral light is deflected away from the main beam and directed to other directions, and such light is often not utilized, so that the effective utilization rate of the light is reduced, which is a common problem in which the light source emits radiation in a radial manner.
  • the reflection wall 600 and the printed circuit board 200 is disposed at an obtuse angle, and the specific angle is adjusted according to the distance between the point light source 300 and the strip-shaped convex lens array 500.
  • the main components and positional relationship of the tubular LED light fixture of this embodiment are the same as those of the first embodiment, except for the shape of the lens 400 and the connection manner of the respective members.
  • the lens 400, the reflection wall 600 and the strip bed plate 103 are integrally formed and enclosed to form an mounting cavity 104.
  • An extrusion process can be used for integral forming.
  • the lens 400 adopts a symmetrical lens and has a radian change on both the inside and outside surfaces, which is easier to manufacture.
  • a first mounting groove 105 for fixing the strip-shaped convex lens array 500 is disposed near the lens 400, and the bottom portion of the mounting cavity 104 is provided a second mounting groove 106 for fixing the printed circuit board 200, the side wall between the first mounting groove 105 and the second mounting groove 106 is the reflection wall 600, and the reflection wall 600 is of the arc structure, so that the reflection angle is smaller and the efficiency is higher.
  • the strip base 102 is made of metal with better heat dissipation effect, and is provided with a curved mounting groove 107 for fixing the strip bed plate 103.
  • the bottom surface of the strip bed plate 103 is a curved surface that fits the curved mounting groove 107, thereby improving the heat dissipation effect.
  • the strip-shaped convex lens array 500 of the present embodiment also employs an elliptical light diffusing film, and both sides in the width direction are inserted into the first mounting groove 105 for assembly.
  • the main components and positional relationship of the tubular LED light fixture in this embodiment are the same as those of the first embodiment, except for the shape of the lens 400 and the connection manner of the respective members.
  • the reflection wall 600 and the strip bed plate 103 are integrally formed.
  • the inner side of the top of the two reflection walls 600 is provided with a first mounting groove 105 for fixing the strip-shaped convex lens array 500, and the outer side of the top of the two reflection walls 600 is provided with a buckle structure for fixing the lens 400, and a second mounting groove 106 for fixing the printed circuit board 200 is provided at the bottom of the strip bed plate 103.
  • the strip-shaped convex lens array 500 of the present embodiment also employs an elliptical light diffusing film, and both sides in the width direction are inserted into the first mounting groove 105 for assembly.
  • the lens 400 is a polarizing lens for adjusting the light distribution of the point light source 300 on a plane (y-z plane) perpendicular to the length direction of the tubular LED light fixture.
  • the viewing angle in the figure is that the light is polarized to the left.

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

Claims (14)

  1. Un appareil d'éclairage à diode électroluminescente tubulaire comprenant :
    un support de lampe (100);
    une carte de circuit imprimé (200), disposée sur le support de lampe (100);
    une pluralité de sources lumineuses ponctuelles (300), disposées sur la surface de montage de source lumineuse de la carte de circuit imprimé (200) le long d'une direction de longueur de d'éclairage à diode électroluminescente tubulaire;
    une lentille (400), disposée sur le support de lampe (100) suivant une direction d'émission de lumière de la source lumineuse ponctuelle (300) pour régler la répartition lumineuse de la source lumineuse ponctuelle (300) sur un plan perpendiculaire à la direction de la longueur de l'appareil d'éclairage à diode électroluminescente tubulaire ; et
    un réseau de lentilles convexes en forme de bande (500), disposé sur le support de lampe (100) et situé entre la lentille (400) et la carte de circuit imprimé (200) et disposé le long de la direction de l'appareil d'éclairage à diode électroluminescente tubulaire, caractérisé en ce que
    le réseau de lentilles convexes en forme de bande (500) est un microréseau de lentilles cylindriques positives disposé sur un film optique mince pour convertir chaque source lumineuse ponctuelle (300) en une pluralité de sources lumineuses secondaires consécutives, et la source lumineuse secondaire convertie par la source lumineuse ponctuelle adjacente (300) est connectée ou superposée.
  2. L'appareil d'éclairage à diode électroluminescente tubulaire selon la revendication 1, dans lequel le réseau de lentilles convexes en forme de bande (500) est un réseau de microréseaux de lentilles cylindriques positives.
  3. L'appareil d'éclairage à diode électroluminescente tubulaire selon la revendication 1, dans lequel le réseau de lentilles convexes en forme de bande (500) est une surface incurvée qui est incurvée dans le sens de la longueur de la lentille convexe en forme de bande.
  4. L'appareil d'éclairage à diode électroluminescente tubulaire selon l'une quelconque des revendications 1 à 3, dans lequel la source lumineuse ponctuelle (300) adopte une puce LED.
  5. L'appareil d'éclairage à diode électroluminescente tubulaire selon l'une quelconque des revendications 1 à 3, dans lequel sur le plan perpendiculaire à la direction de la longueur de l'appareil d'éclairage à diode électroluminescente tubulaire, la paroi réfléchissante (600) est prévue des deux côtés de la source lumineuse ponctuelle (300) pour réfléchir la lumière latérale de la source lumineuse ponctuelle (300) vers le plan d'incidence de la lumière du réseau de lentilles convexes en forme de bande (500).
  6. L'appareil d'éclairage à diode électroluminescente tubulaire selon la revendication 5, dans lequel la paroi réfléchissante (600) et la surface de montage de la source lumineuse ponctuelle (300) sont agencées à un angle obtus.
  7. L'appareil d'éclairage à diode électroluminescente tubulaire selon l'une quelconque des revendications 1 à 3, dans lequel la lentille (400) est une lentille polarisante.
  8. L'appareil d'éclairage à diode électroluminescente tubulaire selon l'une quelconque des revendications 1 à 3, dans lequel la lentille (400) est une lentille symétrique.
  9. L'appareil d'éclairage à diode électroluminescente tubulaire selon la revendication 5, dans lequel le support de lampe (100) comprend deux sièges d'extrémité (101), une base en bande (102) et une plaque d'assise de bande (103), et la lentille (400), la paroi de réflexion (600) et la plaque d'assise de bande (103) sont formées d'un seul tenant et enfermées pour former une cavité de montage (104).
  10. L'appareil d'éclairage à diode électroluminescente tubulaire selon la revendication 5, dans lequel le support de lampe (100) comprend deux sièges d'extrémité (101), une base de bande (102) et une plaque d'assise de bande (103), la paroi réfléchissante (600) et la plaque d'assise de bande (103) sont formées d'un seul tenant, et le côté intérieur du haut des deux parois réfléchissantes (600) est pourvu d'une première rainure de montage (105) pour fixer le réseau de lentilles convexes en forme de bande (500), et le côté extérieur du haut des deux parois réfléchissantes (600) est pourvu d'une structure de boucle pour fixer la lentille (400), et le bas de la plaque d'assise de bande (103) est pourvu d'une seconde rainure de montage (106) pour fixer le carte de circuit imprimé (200).
  11. L'appareil d'éclairage à diode électroluminescente tubulaire selon la revendication 5, dans lequel le support de lampe (100) comprend :
    des sièges d'extrémité (101) ;
    une base de bande (102), dont deux extrémités sont reliées aux sièges d'extrémité (101) pour former une première cavité de logement (108) ;
    une plaque d'assise de bande (103), disposée au fond de la première cavité de logement (108) ; et la plaque d'assise de bande (103) est reliée aux sièges d'extrémité (101) pour former une seconde cavité de logement (109) pour loger la carte de circuit imprimé (200) et la paroi réfléchissante (600).
  12. L'appareil d'éclairage à diode électroluminescente tubulaire selon la revendication 11, dans lequel le côté intérieur de l'extrémité supérieure de la base de bande (102) est pourvu d'une première rainure de montage (105), et le côté extérieur de la paroi réfléchissante (600) est pourvu d'un bord convexe (601) qui correspond à la première rainure de montage (105).
  13. L'appareil d'éclairage à diode électroluminescente tubulaire selon la revendication 12, dans lequel le réseau de lentilles convexes en forme de bande (500) est disposé sur une extrémité supérieure de la paroi réfléchissante (600).
  14. L'appareil d'éclairage à diode électroluminescente tubulaire selon l'une quelconque des revendications 11 à 13, dans lequel la lentille (400) s'adapte à la base de bande (102) par serrage.
EP19211941.0A 2019-04-19 2019-11-27 Appareil d'éclairage à diode électroluminescente tubulaire Active EP3726126B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201910320227.7A CN110131619A (zh) 2019-01-11 2019-04-19 一种条形灯

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EP3726126A1 EP3726126A1 (fr) 2020-10-21
EP3726126B1 true EP3726126B1 (fr) 2022-03-16

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Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8240875B2 (en) * 2008-06-25 2012-08-14 Cree, Inc. Solid state linear array modules for general illumination
US7959322B2 (en) * 2009-04-24 2011-06-14 Whelen Engineering Company, Inc. Optical system for LED array
TW201211459A (en) * 2010-09-08 2012-03-16 Jin Zhan Prec Industry Co Ltd Illumination light beam shaping system
WO2012147653A1 (fr) * 2011-04-25 2012-11-01 五洋紙工株式会社 Feuille de diffusion destinée à un éclairage à led et appareil d'éclairage à led utilisant cette feuille de diffusion

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