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WO2015078361A1 - Référence croisée à une application associée - Google Patents

Référence croisée à une application associée Download PDF

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Publication number
WO2015078361A1
WO2015078361A1 PCT/CN2014/092205 CN2014092205W WO2015078361A1 WO 2015078361 A1 WO2015078361 A1 WO 2015078361A1 CN 2014092205 W CN2014092205 W CN 2014092205W WO 2015078361 A1 WO2015078361 A1 WO 2015078361A1
Authority
WO
WIPO (PCT)
Prior art keywords
led
light
led module
disposed
plate
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/CN2014/092205
Other languages
English (en)
Inventor
Xinxin SONG
Yaxuan SUN
Bo Wu
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.)
BYD Co Ltd
Original Assignee
BYD 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 BYD Co Ltd filed Critical BYD Co Ltd
Publication of WO2015078361A1 publication Critical patent/WO2015078361A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V5/00—Refractors for light sources
    • F21V5/008—Combination of two or more successive refractors along an optical axis
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S2/00—Systems of lighting devices, not provided for in main groups F21S4/00 - F21S10/00 or F21S19/00, e.g. of modular construction
    • F21S2/005—Systems of lighting devices, not provided for in main groups F21S4/00 - F21S10/00 or F21S19/00, e.g. of modular construction of modular construction
    • 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
    • F21V13/00—Producing particular characteristics or distribution of the light emitted by means of a combination of elements specified in two or more of main groups F21V1/00 - F21V11/00
    • F21V13/12—Combinations of only three kinds of elements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V19/00—Fastening of light sources or lamp holders
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V5/00—Refractors for light sources
    • F21V5/02—Refractors for light sources of prismatic shape
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/04—Prisms
    • G02B5/045—Prism arrays
    • 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
    • F21V13/00—Producing particular characteristics or distribution of the light emitted by means of a combination of elements specified in two or more of main groups F21V1/00 - F21V11/00
    • F21V13/02—Combinations of only two kinds of elements
    • F21V13/04—Combinations of only two kinds of elements the elements being reflectors and refractors
    • 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
    • F21Y2113/00—Combination of light sources
    • F21Y2113/10—Combination of light sources of different colours
    • F21Y2113/13—Combination of light sources of different colours comprising an assembly of point-like light sources
    • 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

  • Exemplary embodiments of the present disclosure relate generally to an LED (light emitting diode) field, and more particularly to an LED module and an LED lamp.
  • a light emitting module of a white light LED generally uses blue lights to irradiate yellow fluorescent substances. This LED may not have required color rendering indexes (CRI) , and thus may not meet the requirements on excellent illumination.
  • CRI color rendering indexes
  • white light LEDs, red light LEDs and green light LEDs are arranged with a certain amount ratio, or white light LEDs and red light LEDs are arranged with a certain amount ratio.
  • the application of the above LED lamp may have some advantages such as a relative obvious increase of the CRI, but have some disadvantages such as a relative greater thickness, an unaesthetic appearance, an easier generation of glare, and a lack of softness on light. With an increasing attention on light comfort, an LED lamp with an aesthetic appearance and a smaller thickness needs to be provided.
  • Chinese patent application publication No. CN201198966Y discloses an LED lamp comprising a lamp house, and an LED module disposed inside the LED house.
  • the LED module comprises a white light LED, a red light LED and a green light LED, and a light intensity ratio of the white light LED to the red light LED to the green light LED is (7-8) : (1.4-2) : 1.
  • the LED lamp has increased CRI, and a relative higher lighting effect at a low color temperature as compared with a similar product.
  • the LED lamp however, have some disadvantages such as a relative greater thickness, an unaesthetic appearance, easy occurrence of glare, and lack of softness on light.
  • Embodiments of the present disclosure seek to solve at least one of the problems.
  • an LED module may be provided.
  • the LED module includes: a lamp frame defining a first cavity which has an opening, a first side and a second side opposite to the first side; an LED light source disposed on the bottom of the first cavity and comprising at least a white light LED and a red light LED; a prism sealing the opening of the first cavity and comprising a light exiting surface and a light incident surface facing the LED light source; a reflecting plate disposed at a side of the prism adjacent to the light exiting surface; a brightness enhancement plate disposed above the reflecting plate and defining a sealed second cavity together with the prism and the reflecting plate; and a diffusing plate disposed above the brightness enhancement plate.
  • a first angle between the first side and a horizontal direction ranges from 10°to 60°
  • a second angle between the second side and the horizontal direction ranges from 10°to 60°
  • the light incident surface includes a flat plane
  • the light exiting surface comprises two inclined surfaces
  • a third angle between the two inclined surfaces ranges from 80°to 140°.
  • the third angle between the two inclined surfaces ranges from 110°to 120°.
  • an amount ratio of the white light LED to the red light LED ranges from 1: 1 to 10: 1.
  • the amount ratio of the white light LED to the red light LED ranges from 2: 1 to 4: 1.
  • the white light LED and the red light LED are linearly arranged.
  • the white light LED and the red light LED are spaced apart from each other.
  • a distance L between the LED light source and the light incident surface and a distance P between two adjacent LED satisfy: 0.3 ⁇ L/P ⁇ 10.
  • the brightness enhancement plate comprises two orthogonally disposed brightness enhancement sheets.
  • a protrusion is disposed on a surface of the reflecting plate which faces the brightness enhancement plate.
  • the protrusion has a corrugated shape or a zigzag shape.
  • an axial cross section of the lamp frame has a substantial U shape.
  • an LED lamp includes a lamp house, and the above described LED module disposed inside the lamp house.
  • the LED module may be disposed at one side of the reflecting plate, such that a thickness of the LED module may be reduced.
  • the LED light source includes at least a white light LED and a red light LED disposed inside the lamp frame and the red light LED contains complementary red spectra, so that the CRI may be relatively higher.
  • lights are emitted from the side, mixed, transmitted through the prism, the reflecting plate, the brightness enhancement plate and the diffusing plate, and then emitted from a light exiting surface of the diffusing plate.
  • light emitted from the diffusing plate may be soft and uniform, thus avoiding the generation of glare.
  • the LED module according to embodiments of the present disclosure may have a relatively higher CRI with a relative lower cost.
  • the LED lamp according to embodiments of the present disclosure may have a relatively smaller weight and an enhanced optic utilization.
  • Fig. 1 is a schematic view of an LED module according to an embodiment of the present disclosure
  • Fig. 2 is a schematic view of a lamp frame of an LED module according to an embodiment of the present disclosure
  • Fig. 3 is a schematic view of a prism of an LED module according to an embodiment of the present disclosure
  • Fig. 4 is a schematic view of an LED module according to an embodiment of the present disclosure.
  • Fig. 5 is a schematic view of a reflecting plate of an LED module according to an embodiment of the present disclosure.
  • Fig. 6 is a schematic view of a reflecting plate of an LED module according to another embodiment of the present disclosure.
  • phraseology and terminology used herein with reference to device or element orientation are only used to simplify description of the present disclosure, and do not indicate or imply that the device or element referred to must have or operated in a particular orientation. They cannot be seen as limits to the present disclosure.
  • an LED module includes an LED light source 1, a lamp frame 2, a prism 3, a reflecting plate 4, a brightness enhancement plate 5, and a diffusing plate 6.
  • the lamp frame 2 defines a first cavity in the interior thereof.
  • the first cavity has an opening 21, and defines a first side and a second side opposite to each other.
  • the LED light source 1 is disposed on the bottom of the first cavity and includes at least a white light LED and a red light LED.
  • the prism 3 is disposed to seal the opening of the first cavity and includes a light exiting surface and a light incident surface facing the LED light source 1.
  • the reflecting plate 4 is disposed at a side of the prism 3 adjacent to the light exiting surface.
  • the brightness enhancement plate 5 is disposed above the reflecting plate 4 and defines a sealed second cavity together with the prism 3 and the reflecting plate 4.
  • the diffusing plate 6 is disposed above the brightness enhancement plate 5.
  • the lamp frame 2 defines a first cavity with an opening 21, and the first cavity defines a first side and a second side opposite to each other.
  • the lamp frame 2 may be disposed at one side of the reflecting plate 4, and the opening 21 of the lamp frame 2 may face to one side of the reflecting plate 4;
  • the LED source 1 may be disposed inside and on the bottom of the lamp frame 2, and the LED light source 1 includes at least a red light LED and a white light LED;
  • the prism 3 may be disposed between the lamp frame 2 and the reflecting plate 4; the prism 3 and the lamp frame 2 are sealed to form a sealed first cavity;
  • the brightness enhancement plate 5 may be disposed above the reflecting plate 4;
  • the prism 3, the brightness enhancement plate 5 and the reflecting plate 4 define a sealed second cavity;
  • the diffusing plate 6 may be disposed above the brightness enhancement plate 5.
  • the LED module may be disposed at one side of the reflecting plate, such that a thickness of the LED module may be reduced.
  • the LED light source includes at least a white light LED and a red light LED disposed inside the lamp frame and the red light LED contains complementary red spectra, so that the CRI may be relatively higher.
  • lights are emitted from the side, mixed, transmitted through the prism, the reflecting plate, the brightness enhancement plate and the diffusing plate, and then emitted from a light exiting surface of the diffusing plate.
  • light emitted from the diffusing plate may be soft and uniform, thus avoiding the generation of glare.
  • the LED module according to embodiments of the present disclosure may have a relatively higher CRI with a relative lower cost.
  • the LED lamp according to embodiments of the present disclosure may have a relatively smaller weight and an enhanced optic utilization.
  • the lamp frame 2 includes a vertically placed bottom 22, afirst side 23 extending upwardly from an upper end of the bottom of the lamp frame 2, and a second side 24 extending downwardly from a lower end of the bottom of the lamp frame2.
  • a first angle ⁇ 1 between the first side 23 and a horizontal direction ranges from 10°to 60°
  • a second angle ⁇ 2 between the second side 24 and the horizontal direction ranges from 10°to 60°.
  • the ⁇ 1 and ⁇ 1 may be same with or different from each other.
  • the prism 3 includes a light exiting surface 32 and a light incident surface 31 facing the LED light source 1.
  • the light incident surface 31 may include a flat plane, and the light exiting surface 32 may include or consists of two inclined surfaces 321.
  • Athird angle ⁇ between the two inclined surfaces 321 ranges from 80°to 140°. In some embodiments of the present disclosure, the third angle ⁇ between the two inclined surfaces 321 ranges from 110°to 120°. If the third angle ⁇ is too large, the light with a large angle from the LED light source may be emitted from two sides directly, thus causing a uniform exited light.
  • third angle ⁇ the direction of the light being transmitted or to be emitted, so that the light emitted from the light exiting surface of the prism is transmitted to the reflecting plate, reflected to the brightness enhancement plate via the reflecting plate, and then emitted.
  • the third angle ⁇ may vary based on the material of the prism and a person skilled in the art may select proper third angle ⁇ accordingly.
  • a ratio between the number of the white light LED and the number of the red light LED ranges from 1: 1 to 10: 1, alternatively 2: 1 to 4: 1.
  • the white light LED may use blue light irradiated yellow fluorescent substances or blue light irradiated yellow fluorescent substances having red light nitrides.
  • the white light LEDs (W) and the red light LEDs (R) are arranged linearly, for example, form at least one strip structure.
  • the white light LEDs (W)and the red light LEDs (R) are spaced apart from each other, as shown in Fig. 4.
  • the white light LEDs (W) and the red light LEDs (R) are arranged linearly, so that the lights emitted thereby may be mixed more easily.
  • the interval arrangement of the white light LED (W) and the red light LED(R) may further facilitate to mix the emitted lights.
  • the number of the light source may be based on practical requirements, without particular limits in the present disclosure.
  • the white light LEDs (W) and the red light LEDs (R) may be arranged into three lines, for example, form three light strips, provided these lines or strips are symmetrical about the center of the prism 3.
  • a distance between the LED light source 1 and the light incident surface 21 may be defined as L
  • a distance between two adjacent LEDs may be defined as P
  • L and P satisfy: 0.3 ⁇ L/P ⁇ 10.
  • a dark area may be generated if a difference between the L and P is too large.
  • the minimum of L/P (for example, 0.3) may depend on a fact that lights emitted from adjacent LEDs with different colors may communicate with each other at least at the light coupling edge, and the maximum of L/P (for example, 10) may depend on a fact that a too large width of the edge of the LED module may be hard to realize.
  • the brightness enhancement plate 5 includes two orthogonal disposed brightness enhancement sheets. With the two orthogonal disposed brightness enhancement sheets, the luminance of emitted light may be increased by 100%.
  • a protrusion is disposed on a surface of the reflecting plate facing the brightness enhancement plate 5.
  • the protrusion has a corrugated shape or a zigzag shape.
  • Embodiments of the present disclosure further provide an LED lamp.
  • the LED lamp includes a lamp house, and the above described LED module disposed inside the lamp house.
  • the lights (having angle of divergence, for example, 120°) emitted from the LED light source may be mixed in the sealed first cavity, and refracted by the prism, and emitted from the light emitting surface of the prism, with most emitted lights are emitted in substantial parallel beams. In this way, the original angle of divergence may be greatly reduced. Then the emitted light is transmitted to the second chamber, total refracted in the sealed second cavity, and then mixed. Once the light is transmitted to the protrusion on the reflecting plate, the light may be emitted from the light exiting surface of the reflecting plate.
  • the LED light source is disposed at the side (instead of above or below the LED module) , the lights may be mixed the first cavity and the second cavity, and reflected by the reflecting plate having the protrusion thereon, and then emitted upwardly.
  • the thickness of the LED module may be reduced significantly.
  • the emitted light source is much softer and comfortable, because the lights are emitted from the diffusing plate instead of the light exiting surface of the LED.
  • a light guide plate is avoided, and therefore both the cost and weight of the lamp are reduced, and the CRI of the lamp is increased.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Led Device Packages (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Abstract

L'invention porte sur un module de DEL qui comprend un cadre de lampe (2) définissant une première cavité en son sein, une source de lumière à DEL (1) disposée dans le cadre de lampe (2), un prisme (3), une plaque réfléchissante (4), une plaque d'amélioration de luminosité (5) disposée au-dessus de la plaque réfléchissante (4) et une plaque de diffusion (6) disposée au-dessus de la plaque d'amélioration de luminosité (5). La source de lumière à DEL (1) comprend au moins une DEL de lumière blanche et une DEL de lumière rouge. Le prisme (3) est disposé pour sceller de manière étanche l'ouverture (21) de la première cavité et comprend une surface de sortie de lumière (32) et une surface incidente à la lumière (31) tournée vers la source de lumière à DEL (1). La plaque réfléchissante (4) est disposée au niveau d'un côté du prisme (3) adjacent à la surface de sortie de lumière (32). La plaque d'amélioration de luminosité (5) définit une seconde cavité scellée de manière étanche conjointement avec le prisme (3) et la plaque réfléchissante (4).
PCT/CN2014/092205 2013-11-26 2014-11-25 Référence croisée à une application associée Ceased WO2015078361A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201310604832.XA CN104676349B (zh) 2013-11-26 2013-11-26 一种侧发光led模组及led灯
CN201310604832.X 2013-11-26

Publications (1)

Publication Number Publication Date
WO2015078361A1 true WO2015078361A1 (fr) 2015-06-04

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2014/092205 Ceased WO2015078361A1 (fr) 2013-11-26 2014-11-25 Référence croisée à une application associée

Country Status (2)

Country Link
CN (1) CN104676349B (fr)
WO (1) WO2015078361A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2025180444A1 (fr) * 2024-02-29 2025-09-04 苏州欧普照明有限公司 Lampe

Citations (8)

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CN1549027A (zh) * 2003-05-21 2004-11-24 力捷电脑股份有限公司 一种侧光型背光模件及液晶显示器
CN101071226A (zh) * 2006-05-09 2007-11-14 比亚迪股份有限公司 用于液晶显示器的背光源及采用该背光源的液晶显示器
JP2008204873A (ja) * 2007-02-21 2008-09-04 Fujifilm Corp 面状照明装置、面状照明装置の評価方法及びこれを用いる製造方法
CN101871597A (zh) * 2009-04-23 2010-10-27 瀚宇彩晶股份有限公司 背光模组
CN102193134A (zh) * 2010-03-12 2011-09-21 欧姆龙株式会社 导光板及液晶显示装置
CN102913855A (zh) * 2008-08-26 2013-02-06 友达光电股份有限公司 背光模块及其混光结构
CN102927524A (zh) * 2012-10-29 2013-02-13 京东方科技集团股份有限公司 混光件、导光板、背光模组及显示装置
WO2013106553A1 (fr) * 2012-01-13 2013-07-18 Qd Vision, Inc. Chambre de mélange de lumière destinée à être utilisée avec une plaque de guidage de lumière

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US6629764B1 (en) * 1999-03-30 2003-10-07 West Electric Co., Ltd. Illuminator and LCD device comprising the illuminator
US6781775B2 (en) * 2002-10-16 2004-08-24 Zvi Bendat Optical system for aligning a pair of objects
CN101145593A (zh) * 2006-09-14 2008-03-19 鸿富锦精密工业（深圳）有限公司 发光二极管及其制备方法
CN102644889B (zh) * 2012-04-01 2014-06-04 深圳市华星光电技术有限公司 背光模组

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1549027A (zh) * 2003-05-21 2004-11-24 力捷电脑股份有限公司 一种侧光型背光模件及液晶显示器
CN101071226A (zh) * 2006-05-09 2007-11-14 比亚迪股份有限公司 用于液晶显示器的背光源及采用该背光源的液晶显示器
JP2008204873A (ja) * 2007-02-21 2008-09-04 Fujifilm Corp 面状照明装置、面状照明装置の評価方法及びこれを用いる製造方法
CN102913855A (zh) * 2008-08-26 2013-02-06 友达光电股份有限公司 背光模块及其混光结构
CN101871597A (zh) * 2009-04-23 2010-10-27 瀚宇彩晶股份有限公司 背光模组
CN102193134A (zh) * 2010-03-12 2011-09-21 欧姆龙株式会社 导光板及液晶显示装置
WO2013106553A1 (fr) * 2012-01-13 2013-07-18 Qd Vision, Inc. Chambre de mélange de lumière destinée à être utilisée avec une plaque de guidage de lumière
CN102927524A (zh) * 2012-10-29 2013-02-13 京东方科技集团股份有限公司 混光件、导光板、背光模组及显示装置

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