WO2012009918A1 - Module de source lumineuse blanche à del - Google Patents

Module de source lumineuse blanche à del Download PDF

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Publication number
WO2012009918A1
WO2012009918A1 PCT/CN2010/079114 CN2010079114W WO2012009918A1 WO 2012009918 A1 WO2012009918 A1 WO 2012009918A1 CN 2010079114 W CN2010079114 W CN 2010079114W WO 2012009918 A1 WO2012009918 A1 WO 2012009918A1
Authority
WO
WIPO (PCT)
Prior art keywords
led
light source
led lamp
white
source module
Prior art date
Application number
PCT/CN2010/079114
Other languages
English (en)
Chinese (zh)
Inventor
张海兵
徐光明
严华峰
Original Assignee
上海亚明灯泡厂有限公司
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 上海亚明灯泡厂有限公司 filed Critical 上海亚明灯泡厂有限公司
Publication of WO2012009918A1 publication Critical patent/WO2012009918A1/fr

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
    • 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

  • the invention relates to an LED white light source module, in particular to an LED white light source module with high luminous efficiency, low color temperature and high color rendering. Background technique
  • LED Since the advent of the blue LED chip, LED lights have developed rapidly. LED is known as the fourth generation of illumination source instead of fluorescent and incandescent lamps because of its high luminous efficiency, good energy saving effect, no pollution and long life.
  • Blue LED plus YAG phosphor the yellow YAG phosphor coated on top of the blue LED is excited, and the yellow light generated by the phosphor is complementary to the remaining blue light to produce white light;
  • the color rendering index is an important characteristic reflecting the quality of the light source, and its value is determined by the spectral energy distribution of the light source.
  • the white light is obtained by the "blue LED + YAG phosphor powder" method, and the manufacturing process is relatively simple and the cost is low.
  • the white light spectrum obtained by this method lacks the red and green portions of the radiation, which limits the light-emitting quality of the light source, resulting in a low color rendering index of the light source, thereby limiting the need for white LEDs to be higher.
  • the color rendering index in this case, it is necessary to find ways to improve the color rendering index of the white LED.
  • an effective way to improve the color rendering index of white LEDs is to increase the color radiation that is missing in the spectrum, especially the red band radiation, which is most effective.
  • This is achieved in two ways in practice: First, adding a red phosphor component to the YAG phosphor (such as patents CN 1677695A, CN 101414604A, and CN 101195742A) or using a YAG phosphor layer in combination with a red phosphor layer The multi-layer phosphor method (such as the patent CN 1953216A); Second, the white LED chip and the red LED chip (such as the patent CN 1937222A) are packaged in the same LED, and the red light emitted by the red LED chip is used to make up for the lack of white light.
  • the red phosphor has a low luminous efficiency, which causes a decrease in the overall luminous flux.
  • the consistency of the batch product needs to be improved.
  • the red LED chip since the current blue LED chip uses GaN-based materials, and the red LED chip uses AlGalnP-based materials, the attenuation coefficient is inconsistent due to different materials, and the peak wavelength also drifts, and high color rendering is difficult to maintain after long-term use. Color temperature is also difficult to stabilize. Summary of the invention
  • the technical problem to be solved by the present invention is to provide an LED white light source module with high light efficiency, low color temperature and high color rendering.
  • An LED white light source module includes a substrate, wherein the substrate is provided with a plurality of white LED lamp beads and a plurality of red LED lamp beads, and the ratio of the white LED lamp beads to the red LED lamp beads is 2: 1, the white LED lamp bead is provided with a blue LED chip, the blue LED chip is coated with a yellow and green phosphor mixed colloid, and the red LED lamp bead is provided with a red LED chip.
  • the blue LED chip has a peak wavelength of 440 to 480 nm
  • the red LED chip has a peak wavelength of 600 to 670 nm
  • the yellow phosphor has an excitation wavelength of 540 to 560 nm
  • the green phosphor is excited.
  • the wavelength is from 510 nm to 540 nm.
  • the blue LED chip has a peak wavelength of 450 to 470 nm
  • the red LED chip has a peak wavelength of 620 to 650 nm.
  • the weight ratio of the yellow phosphor to the green phosphor in the yellow and green phosphor mixed colloid is in the range of 5:1 to 3:1.
  • the weight ratio of the yellow phosphor to the green phosphor in the yellow and green phosphor mixed colloid is 4:1.
  • the white LED lamp bead and the red LED lamp bead are packaged by a copper-based bracket or a ceramic bracket, and the substrate is an aluminum substrate.
  • the plurality of white LED lamp beads and the plurality of red LED lamp beads are uniformly and symmetrically distributed on the substrate.
  • the plurality of white LED lamp beads are arranged around the plurality of red LED lamp beads.
  • the power of the white LED lamp bead and the red LED bead is 0. 5W, 1W, 3W or 5W.
  • the LED white light source module is mounted with a matte glass or a PC diffuser.
  • the LED white light source module utilizes the blue light emitted by the blue LED chip to excite the yellow-green phosphor to generate yellow-green light, and the yellow-green light and the blue LED chip excite the phosphor, and the remaining blue and red LED chips emit red. Light mixing to obtain a white light source with high luminous efficiency and high color rendering.
  • the LED white light source module can obtain a high-quality white light source by simply mixing two different LED lamp beads, and has a simple structure and convenient manufacture, and in particular, the consistency in mass production is relatively easy to control.
  • Embodiment 1 and 2 show two arrangements of LED lamp beads in Embodiment 1 of the present invention.
  • 3 is a relative spectrum diagram of the LED white light source module test of the present invention.
  • the LED white light source module has four white LED lamp beads and two red LED lamp beads on the substrate, and the ratio of the white LED lamp beads to the red LED lamp beads is 2: 1.
  • a white LED chip is provided with a blue LED chip, and a red LED chip is provided with a red LED chip.
  • the blue LED chip is coated with a yellow and green phosphor mixed colloid.
  • the weight ratio of the yellow phosphor to the green phosphor in the yellow and green phosphor mixed colloid is in the range of 5:1 ⁇ 3:1, preferably, yellow.
  • the weight ratio of phosphor to green phosphor is 4:1.
  • the peak wavelength of the blue LED chip is 440 ⁇ 480nm
  • the peak wavelength of the red LED chip is 600 ⁇ 670nm
  • the excitation wavelength of the yellow phosphor is 540 ⁇ 560nm
  • the excitation wavelength of the green phosphor is 510nm ⁇ 540nm.
  • the peak wavelength of the blue LED chip is preferably in the range of 450 to 470 nm
  • the peak wavelength of the red LED chip is preferably in the range of 620 to 650 nm.
  • the white LED lamp bead and the red LED lamp bead are all packaged by a copper-based bracket or a ceramic bracket, and the substrate is made of an aluminum substrate. The packaging method is mature and the production cost is low.
  • the white LED lamp bead and the red LED bead should be evenly and symmetrically distributed on the substrate.
  • the white LED bead is arranged around the plurality of red LED bead, so that the obtained white light is more luminous. , color rendering is better.
  • the distribution method of the white LED lamp bead and the red LED lamp bead can be as shown in Fig. 1. Two red LED lamp beads are placed in the middle position of the aluminum substrate, and four white LED lamp beads are evenly placed on the two red LEDs. The periphery of the lamp bead; as shown in Fig. 2, four white LED lamp beads are placed in the middle of the aluminum substrate, and two red LED lamp beads are placed on both sides.
  • the power of the white LED lamp bead and the red LED bead is generally 0.5W, 1W, 3W or 5W.
  • White LED LED bead and red LED bead are driven by the same current, which is convenient for the production of the driver circuit.
  • the circuit connection can be selected in 6-string or 3-string 2-way mode, which is very convenient.
  • the LED white light source module utilizes the blue light emitted by the blue LED chip to excite the yellow-green phosphor to generate yellow-green light, and the yellow-green light is mixed with the red light emitted by the blue and red LED chips remaining after the blue LED chip excites the phosphor to obtain a high-efficiency background color.
  • a high-light color white light source The relative spectrum of the LED white light source module is shown in Figure 3.
  • the measured luminous flux, color rendering, color temperature and other data are shown in the following table: Color temperature ( ⁇ ) color coordinate x/y color rendering index (Ra) luminous flux (lm) luminous efficacy (lm/W)
  • the LED white light source module has high luminous efficiency and good color rendering, which is very suitable for general illumination sources.
  • the LED white light source module is superior to ordinary incandescent lamps and trichromatic fluorescent lamps in terms of color rendering, life and environmental protection, and is of great significance for the development of general lighting in the future.
  • the LED white light source module can obtain a high-quality white light source by simply mixing two different LED lamp beads, and has a simple structure, especially when the mass production is consistent, and the manufacturing is convenient and suitable for mass production.
  • Example 2 Example 2:
  • FIGS. 4, 5 and 6 six white LED lamp beads and three red LED lamp beads are mounted on an aluminum substrate, and three types of arrangement can be selected as shown in FIGS. 4, 5 and 6.
  • three red LED beads are placed in the middle of the aluminum substrate, and six white LED beads are placed on the periphery of three red LED beads; in Figure 5, three white LED beads are placed in the aluminum.
  • the middle position of the substrate, and three red LED lamp beads and three other white LED lamp beads are placed on the periphery; in Figure 5, three white LED lamp beads are also placed in the middle of the aluminum substrate, and three red
  • the light LED bead and the other three white LED bead are placed on the periphery, but the difference from Figure 5 is that the three outermost red LED bead are placed.
  • the circuit connection can be selected in a 9-string or 3-string 3-way mode.
  • Example 3 Example 3:
  • This embodiment is composed of 8 white LED lamp beads and 4 red LED lamp beads mounted on an aluminum substrate, and can be selected as shown in FIG. 7, 8, and 9.
  • four red LED beads are placed in the middle of the aluminum substrate, while eight white LED beads are placed on the periphery of four red LED beads; in Figure 8, four white LED beads are placed in the aluminum. The middle position of the substrate, and four red LED beads and four other white LED beads are placed on the periphery; in Figure 9, four white LED beads are also placed in the middle of the aluminum substrate, and four red The light LED bead and the other four white LED bead are placed on the periphery, but the difference from Fig. 8 is that four red LED bead are placed on the outermost periphery.
  • the circuit connection can be selected in the form of 12 strings, 6 strings 2 or 3 strings 4 and.
  • the LED white light source module obtained by the above embodiments can be used for making various kinds of lighting fixtures, such as a low color temperature downlight, a low color temperature ceiling light, a low color temperature lighting bulb, and a low color temperature street light.
  • a matte glass or PC diffuser can be installed on the LED white light source module to achieve uniform light mixing effect, thereby making the lighting fixture more Good light efficiency and color rendering.

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)
  • Led Device Packages (AREA)

Abstract

L'invention concerne un module de source lumineuse blanche à DEL, comprenant un substrat, une pluralité de corps de DEL blanches et de corps de DEL rouges disposés sur le substrat à raison d'un rapport numérique 2:1. Une puce de DEL bleue est montée dans le corps de DEL blanche, et un colloïde formé d'un mélange de poudres fluorescentes jaune et verte est appliqué sur la puce de DEL bleue. Une puce de DEL rouge est montée dans le corps de DEL rouge. Le module de source lumineuse blanche à DEL présente une structure simple, et permet d'obtenir un rendement lumineux élevé, une température de couleur basse et un rendu fidèle des couleurs, avec deux types de corps de DEL seulement.
PCT/CN2010/079114 2010-07-20 2010-11-25 Module de source lumineuse blanche à del WO2012009918A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201010231714.5 2010-07-20
CN2010102317145A CN101915369A (zh) 2010-07-20 2010-07-20 Led白光光源模块

Publications (1)

Publication Number Publication Date
WO2012009918A1 true WO2012009918A1 (fr) 2012-01-26

Family

ID=43322945

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2010/079114 WO2012009918A1 (fr) 2010-07-20 2010-11-25 Module de source lumineuse blanche à del

Country Status (2)

Country Link
CN (1) CN101915369A (fr)
WO (1) WO2012009918A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11112560B2 (en) * 2017-12-22 2021-09-07 Ledlucky Holdings Company Ltd. LED side-luminescence panel lamp

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CN102606898B (zh) * 2011-01-25 2014-11-26 海洋王照明科技股份有限公司 一种色温可调的白光led光源及其应用
CN102102822A (zh) * 2011-03-04 2011-06-22 缪仙荣 一种具有高光效高显色指数光源模组的led球灯
CN102182944A (zh) * 2011-03-28 2011-09-14 浙江英特来光电科技有限公司 具有红光芯片的led白灯
CN102128432A (zh) * 2011-03-28 2011-07-20 重庆邦桥科技有限公司 色温连续可调的医疗照明发光二极管
CN102278641A (zh) * 2011-08-25 2011-12-14 上海亚明灯泡厂有限公司 白光led灯及其生成高显色白光的方法
CN102569283A (zh) * 2012-02-09 2012-07-11 重庆邦桥科技有限公司 一种发光二极管
CN102878467B (zh) * 2012-10-19 2015-02-11 纳晶科技股份有限公司 低色温照明组件
CN103775862A (zh) * 2012-10-25 2014-05-07 深圳市福明电子科技有限公司 一种全色谱led照明灯具及其制作方法
CN105114844B (zh) * 2015-09-11 2018-02-02 王忆 一种高光效、高显色贴片光源模组
CN108843983A (zh) * 2018-06-27 2018-11-20 朗昭创新控股（深圳）有限公司 一种高红光的准自然光光源及灯具
WO2020000517A1 (fr) * 2018-06-27 2020-01-02 朗昭创新控股（深圳）有限公司 Émetteur à del destiné à fournir une lumière complètement à l'intérieur d'un spectre naturel et appareil d'éclairage
CN108828888A (zh) * 2018-06-27 2018-11-16 朗昭创新控股（深圳）有限公司 一种投影设备
CN108899311A (zh) * 2018-06-27 2018-11-27 朗昭创新控股（深圳）有限公司 一种led光源制造方法
CN110319359A (zh) * 2019-07-25 2019-10-11 徐春雷 一种自然光谱对色标准光源

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11112560B2 (en) * 2017-12-22 2021-09-07 Ledlucky Holdings Company Ltd. LED side-luminescence panel lamp

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