WO2021139157A1 - 一种全光谱led光源 - Google Patents

一种全光谱led光源 Download PDF

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Publication number
WO2021139157A1
WO2021139157A1 PCT/CN2020/109181 CN2020109181W WO2021139157A1 WO 2021139157 A1 WO2021139157 A1 WO 2021139157A1 CN 2020109181 W CN2020109181 W CN 2020109181W WO 2021139157 A1 WO2021139157 A1 WO 2021139157A1
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lamp bead
lamp
spectrum
full
beads
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PCT/CN2020/109181
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English (en)
French (fr)
Inventor
任昌烈
谢自力
方建初
陈敦军
卞文静
胡尹
邓青山
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南京集芯光电技术研究院有限公司
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Publication of WO2021139157A1 publication Critical patent/WO2021139157A1/zh

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    • 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
    • F21V19/001—Fastening of light sources or lamp holders the light sources being semiconductors devices, e.g. LEDs
    • 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
    • F21V23/00—Arrangement of electric circuit elements in or on lighting devices
    • F21V23/02—Arrangement of electric circuit elements in or on lighting devices the elements being transformers, impedances or power supply units, e.g. a transformer with a rectifier
    • 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 a full-spectrum LED light source, belonging to the technical field of LED lighting.
  • LED white light technology is relatively mature.
  • White light LED has greatly improved in terms of light efficiency and color rendering, but it still has a big gap compared with full-spectrum natural light.
  • the spectrum lacks the blue-green light part of 490 ⁇ 500nm and 650nm.
  • the red light part of ⁇ 700nm, and the light beam of white LED is narrow, the sun light is most accustomed to human eyes, so the spectrum of artificial light source is closer to sun light, the more natural and comfortable the human eye feels about colors.
  • full-spectrum LED light sources and lamps have emerged.
  • the spectrum of this light source is close to sunlight and can achieve ultra-high-quality sunlight-like lighting.
  • it is not easy to achieve solar-like lighting.
  • the technical difficulty is to fill in the missing part of the spectrum.
  • Current full-spectrum light sources mostly use short-wavelength ultraviolet chips to excite red, green, and blue phosphors to emit blue, red, and green light, and these lights are mixed into white light.
  • the conversion efficiency of the above three powders excited by the ultraviolet chip is very low, and the brightness and light efficiency of the final finished lamp are low, and the price of the ultraviolet chip and blue phosphor is much higher than that of the ordinary blue chip and phosphor.
  • the use of UV chips will increase the risk of damage to the retina in the low-energy band.
  • the purpose of the present invention is to provide a full-spectrum LED light source.
  • the technical scheme adopted by the present invention is: a full-spectrum LED light source, which is composed of two or more lamp beads with different spectra and arranged after being given different currents. Different currents are given to make the luminous flux of the lamp beads of different spectra different, and finally integrated Luminescence is the full spectrum.
  • the lamp bead A and the lamp bead B are arranged.
  • the lamp bead A is an ordinary white LED lamp bead, and the blue-green spectrum of 490-500nm is missing in the spectrum, and the lamp bead B has a peak wavelength of 490-500nm.
  • lamp beads D are ordinary white LED lamp beads, and the blue-green spectrum of 490-500nm and the red light spectrum of 650-700nm are missing in the spectrum.
  • Lamp B is a white LED lamp with a peak wavelength of 490 ⁇ 500nm
  • Lamp C is a white LED lamp with a peak wavelength of 650 ⁇ 700nm
  • the lamp beads D, the lamp beads B and the lamp beads C are spatially arranged in a circular manner as (DBC) m or (BCD) m or (DCB) m or (BDC) m or (CDB) m or ( CBD) m
  • the lamp bead D is electrically connected
  • the input current I3, the lamp bead B is through the electrical connection
  • the lamp bead C is through the electrical connection
  • the full-spectrum LED light source provided by the present invention only needs two or more LED lamp beads to be arranged according to a certain rule to obtain a full-spectrum LED, with simple structure and low cost. It avoids the risk of damage to the retina by increasing the low-energy band when using UV chips.
  • Figure 1 A schematic diagram of the spatial arrangement of the full-spectrum LED light source in Embodiment 1.
  • Fig. 4 is a schematic diagram of the spatial arrangement of full-spectrum LED light sources in Embodiment 2.
  • the lamp beads are arranged in an AB cycle in the spatial arrangement of ABABABABAB... (BABABABA...
  • the lamp bead A is electrically connected to input current I1
  • the lamp bead B is electrically connected to input current I2.
  • a lamp beads are connected in series to form an A lamp bead string
  • a lamp beads are connected in series with a resistance Ra
  • B lamp beads are connected in series to form a B lamp string
  • B lamp beads are connected in series with a resistance Rb.
  • the lamp bead string A is connected in parallel with the lamp bead string B, and the equivalent circuit is shown in Figure 2.
  • the test spectrum is shown in Figure 3.
  • This full-spectrum LED lamp is composed of lamp beads D, lamp beads B and lamp beads C.
  • the lamp beads D, B and C are 2835 products with 5000K color temperature of Nanjing Jixin Optoelectronics Technology Research Institute Co., Ltd.
  • the lamp beads D is an ordinary white LED lamp bead, and its spectrum is missing the blue-green spectrum of 490 ⁇ 500nm and the red light spectrum of 650 ⁇ 700nm.
  • Lamp bead B is a white LED lamp with a peak wavelength of 490 ⁇ 500nm
  • lamp C is a peak wavelength at 650 ⁇ 700nm white LED lamp beads
  • the lamp beads are arranged in a DBC cycle in the spatial arrangement DBCDBCDBCDBC... (Or BCDBCDBCDBCD...or DCBDCBDCBDCB...or BDCBDCBDC...or CDBCDBCDBCDB...or CBDCBDCBDCBD..., all are equivalent ways), as shown in the schematic diagram of Figure 4 (the lamp beads are arranged in a DBC cycle in space). There should be at least one set of lamp beads.
  • the lamp bead D is electrically connected, and the current I3 is input, the lamp bead B is through the electrical connection, and the current I4 is input, and the lamp bead C is through the electrical connection, and the current I5 is input.
  • D lamp beads are connected in series to form D lamp beads, D lamp beads are connected in series with resistance Rd, B lamp beads are connected in series to form B lamp beads string, B lamp beads are connected in series with resistance Rb, C lamp beads are connected in series to form C Lamp bead string, C lamp bead string and then series resistance Rc.
  • D lamp bead string, B lamp bead string and C lamp bead string are connected in parallel, and the equivalent circuit is shown in Figure 5.

Abstract

一种全光谱LED光源，由两种或两种以上不同光谱的灯珠按一定规律排布而成，通过将不同光谱的灯珠与不同阻值的电阻串联，从而给予不同电流使得不同光谱灯珠的光通量不同，最后综合发光为全光谱。

Description

一种全光谱LED光源 技术领域
本发明涉及一种全光谱LED光源，属于LED照明技术领域。
背景技术
目前LED白光技术比较成熟，白光LED在光效、显色性方面有了较大改善，但相比全光谱自然光来说仍然具有很大差距，光谱中缺少490～500nm的蓝绿光部分和650～700nm的红光部分，且白光LED的光束较窄，人眼最习惯的光照是太阳光，所以人造光源的光谱越接近太阳光，人眼对于颜色的感觉越自然，越舒适。
应人们的需求，全光谱LED光源及灯具应运而生，这种光源的光谱接近太阳光，可实现超高品质的类太阳光式照明。但是要实现类太阳式照明并非易事，其技术难点就是补全光谱中缺失的部分。目前的全光谱光源，大多使用波长较短的紫外芯片激发红、绿、蓝荧光粉使其发出蓝光、红光和绿光，这些光经混合后成白光。
在此过程中，紫外芯片激发以上三粉的转化效率很低，最终成品灯具的亮度及光效较低，而且紫外芯片和蓝色荧光粉的价格远高于普通蓝色芯片和荧光粉，对于照明来说，使用紫外芯片，会增加低能波段对于视网膜损伤的风险。
发明内容
本发明的目的在于提供一种全光谱LED光源。
本发明采用的技术方案为：一种全光谱LED光源，由两种或两种以上不同光谱的灯珠给予不同电流后排布而成，给予不同电流使得不同光谱灯珠的光通量不同，最后综合发光为全光谱。
优选的，由灯珠A和灯珠B排布而成，所述灯珠A为普通白光LED灯珠，其光谱中缺失490～500nm的蓝绿光谱，灯珠B为峰值波长在490～500nm的白光LED灯珠，灯珠A和灯珠B光通量满足A:B＝1:1。
优选的，灯珠A和灯珠B在空间上按循环的方式排布为(AB) n或者(BA) n，灯珠A通过电连接，输入电流I1，灯珠B通过电连接，输入电流I2，I1：I2＝2:1。
优选的，由灯珠D、灯珠B和灯珠C排布而成，所述灯珠D为普通白光LED灯珠，其光谱中缺失490～500nm的蓝绿光谱和650～700nm红光光谱，灯珠B为峰值波长在490～500nm的白光LED灯珠，灯珠C为峰值波长在650～700nm的白光LED灯珠，灯珠D、灯珠B、灯珠C光通量满足D:B:C＝1:1:0.5。
优选的，灯珠D、灯珠B和灯珠C在空间上按循环的方式排布为(DBC) m或(BCD) m或(DCB) m或(BDC) m或(CDB) m或(CBD) m，灯珠D通过电连接，输入电流I3，灯珠B通过电连接，输入电流I4，灯珠C通过电连接，输入电流I5，I3，I4及I5在额定电流范围内且满足I3：I4：I5＝2:1:1。
本发明提供的全光谱LED光源，只需要两种或两种以上的LED灯珠按一定规律排布即可获得全光谱LED，结构简单，成本低。避免了使用紫外芯片时增加低能波段对于视网膜损伤的风险。
附图说明
图1、实施例1中全光谱LED光源的空间排布示意图。
图2、实施例1中全光谱LED光源的等效电路图。
图3、实施例1中全光谱LED光源的光谱图。
图4、实施例2中全光谱LED光源的空间排布示意图。
图5、实施例2中全光谱LED光源的等效电路图。
图6、实施例2中全光谱LED光源的光谱图。
具体实施方式
以下是结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅是本发明的一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动的前提下所获得的所有其他实施例，都属于本发明保护的范围。
实施例1
本全光谱LED光源，由灯珠A和灯珠B排布而成，灯珠A和B为南京集芯光电技术研究院有限公司的5000K色温的2835产品，所述灯珠A为普通白光LED灯珠，其光谱中只缺失490～500nm的蓝绿光谱，灯珠B为峰值波长在490～500nm的白光LED灯珠，灯珠A和灯珠B光通量满足A:B＝1:1。灯珠在空间排布上按AB循环的方式排布ABABABABAB…(BABABABA…的方式也可，是等效的方式)，如图1示意图(空间上灯珠按AB循环的方式排布)，灯珠至少应该有一组，即AB或BA。灯珠A通过电连接，输入电流I1，灯珠B通过电连接，输入电流I2。A灯珠之间串联形成A灯珠串，A灯珠串再串联电阻Ra，B灯珠之间串联形成B灯珠串，B灯珠串再串联电阻Rb。A灯珠串与B灯珠串之间并联，其等效电路如图2所示，电阻阻值RA：RB＝1:2即可实现电流I1：I2＝2:1， 经对其综合发光测试光谱如图3。
实施例2
本全光谱LED灯具由灯珠D、灯珠B和灯珠C排布而成，灯珠D、B和C为南京集芯光电技术研究院有限公司的5000K色温的2835产品，所述灯珠D为普通白光LED灯珠，其光谱中缺失490～500nm的蓝绿光谱和650～700nm红光光谱，灯珠B为峰值波长在490～500nm的白光LED灯珠，灯珠C为峰值波长在650～700nm的白光LED灯珠，灯珠D、灯珠B、灯珠C光通量满足D:B:C＝1:1:0.5，灯珠在空间排布上按DBC循环的方式排布DBCDBCDBCDBC…(或BCDBCDBCDBCD…或DCBDCBDCBDCB…或BDCBDCBDCBDC…或CDBCDBCDBCDB…或CBDCBDCBDCBD…，均为等效的方式)，如图4示意图(空间上灯珠按DBC循环的方式排布)。灯珠至少应该有一组。灯珠D通过电连接，输入电流I3，灯珠B通过电连接，输入电流I4，灯珠C通过电连接，输入电流I5。D灯珠之间串联形成D灯珠串，D灯珠串再串联电阻Rd，B灯珠之间串联形成B灯珠串，B灯珠串再串联电阻Rb，C灯珠之间串联形成C灯珠串，C灯珠串再串联电阻Rc。D灯珠串、B灯珠串与C灯珠串之间并联，其等效电路如图5所示，电阻阻值RD：RB：RC＝1:2:2，即可实现I3：I4：I5＝2:1:1，经对其综合发光测试光谱如图6。
上述实施例为本发明较佳的实施方式，但本发明的实施方式并不受上述实施例的限制，其他的任何未背离本发明的精神实质与原理下所作的改变、修饰、替代、组合、简化，均应为等效的置换方式，都包含在本发明的保护范围之内。

Claims (5)

  1. 一种全光谱LED光源，由两种或两种以上不同光谱的灯珠给予不同电流后排布而成，给予不同电流使得不同光谱灯珠的光通量不同，最后综合发光为全光谱。
  2. 根据权利要求1所述的全光谱LED光源，其特征在于：由灯珠A和灯珠B排布而成，所述灯珠A为普通白光LED灯珠，其光谱中缺失490～500nm的蓝绿光谱，灯珠B为峰值波长在490～500nm的白光LED灯珠，灯珠A和灯珠B光通量满足A:B＝1:1。
  3. 根据权利要求2所述的全光谱LED光源，其特征在于：灯珠A和灯珠B在空间上按循环的方式排布为(AB) n或者(BA) n，灯珠A通过电连接，输入电流I1，灯珠B通过电连接，输入电流I2，I1及I2在额定电流范围内且满足I1：I2＝2:1。
  4. 根据权利要求1所述的全光谱LED光源，其特征在于：由灯珠D、灯珠B和灯珠C排布而成，所述灯珠D为普通白光LED灯珠，其光谱中缺失490～500nm的蓝绿光谱和650～700nm红光光谱，灯珠B为峰值波长在490～500nm的白光LED灯珠，灯珠C为峰值波长在650～700nm的白光LED灯珠，灯珠D、灯珠B、灯珠C光通量满足D:B:C＝1:1:0.5。
  5. 根据权利要求4所述的全光谱LED光源，其特征在于：灯珠D、灯珠B和灯珠C在空间上按循环的方式排布为(DBC) m或(BCD) m或(DCB) m或(BDC) m或(CDB) m或(CBD) m，灯珠D通过电连接，输入电流I3，灯珠B通过电连接，输入电流I4，灯珠C通过电连接，输入电流I5，I3，I4及I5在额定电流范围内且满足I3：I4：I5＝2:1:1。
PCT/CN2020/109181 2020-01-07 2020-08-14 一种全光谱led光源 WO2021139157A1 (zh)

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CN111076149A (zh) * 2020-01-07 2020-04-28 南京集芯光电技术研究院有限公司 一种全光谱led光源

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