JP2003078175A - Quasi white light emitting device - Google Patents

Quasi white light emitting device

Info

Publication number
JP2003078175A
JP2003078175A JP2001268922A JP2001268922A JP2003078175A JP 2003078175 A JP2003078175 A JP 2003078175A JP 2001268922 A JP2001268922 A JP 2001268922A JP 2001268922 A JP2001268922 A JP 2001268922A JP 2003078175 A JP2003078175 A JP 2003078175A
Authority
JP
Japan
Prior art keywords
light emitting
emitting diode
yellow
blue light
emitting device
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.)
Pending
Application number
JP2001268922A
Other languages
Japanese (ja)
Inventor
Yoshio Ueda
良生 上田
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.)
Panasonic Life Solutions Asahi Co Ltd
Original Assignee
Asahi Matsushita Electric Works 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 Asahi Matsushita Electric Works Ltd filed Critical Asahi Matsushita Electric Works Ltd
Priority to JP2001268922A priority Critical patent/JP2003078175A/en
Publication of JP2003078175A publication Critical patent/JP2003078175A/en
Pending legal-status Critical Current

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
    • F21K9/20—Light sources comprising attachment means
    • F21K9/23—Retrofit light sources for lighting devices with a single fitting for each light source, e.g. for substitution of incandescent lamps with bayonet or threaded fittings
    • 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
    • F21Y2115/00—Light-generating elements of semiconductor light sources
    • F21Y2115/10—Light-emitting diodes [LED]

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

PROBLEM TO BE SOLVED: To provide an ideal quasi white light emitting device only using light emitting diodes. SOLUTION: This quasi white light emitting device is constituted by arranging blue light emitting diodes B and yellow-green light emitting diodes YG closely to each other, and adjusting the luminance ratio between the diodes B and YG to about 0.8 to about 1.2. When the intervals (d) between the blue light emitting diodes B and yellow-green light emitting diodes YG are adjusted to about 1 mm or smaller, a preferable result is obtained at the time of mixing blue light with the yellow-green light. In addition, the central wavelengths of the blue light and yellow-green light emitted from the diodes B and YG are respectively adjusted to about 450 μm to about 490 μm and about 540 μm to about 580 μm.

Description

【発明の詳細な説明】Detailed Description of the Invention

【０００１】[0001]

【発明の属する技術分野】本発明は、発光ダイオードを
用いた疑似白色発光装置に関する。TECHNICAL FIELD The present invention relates to a pseudo white light emitting device using a light emitting diode.

【０００２】[0002]

【従来の技術】発光ダイオードを用いた疑似白色発光装
置としては、青色発光ダイオードとＹＡＧ系蛍光体を用
いて疑似白色可視光を得るものがある。2. Description of the Related Art As a pseudo white light emitting device using a light emitting diode, there is one that obtains pseudo white visible light by using a blue light emitting diode and a YAG type phosphor.

【０００３】[0003]

【発明が解決しようとする課題】しかし、蛍光体にバラ
ツキがあるため、発光色にバラツキを生じたり、蛍光体
の経時劣化もあり、あまり好ましくはない。従って、本
発明は、発光ダイオードのみを用いた好適な疑似白色発
光装置を提供することを目的とする。However, since the phosphors have variations, the emission colors also vary, and the phosphors deteriorate over time, which is not preferable. Therefore, it is an object of the present invention to provide a suitable pseudo white light emitting device using only a light emitting diode.

【０００４】[0004]

【課題を解決するための手段】本発明を要約すると、青
色発光ダイオードと黄緑色発光ダイオードを近接配置す
るとともに、それらの輝度比を約０．８〜１．２にした
疑似白色発光装置である。そして、青色発光ダイオード
と黄緑色発光ダイオードの間隔を約１ｍｍ以内にすると
混色上、好ましい。なお、青色発光ダイオードの発光中
心波長を約４５０〜４９０ｎｍ、黄緑色発光ダイオード
の発光中心波長を約５４０〜５８０ｎｍとしている。In summary, the present invention is a pseudo-white light emitting device in which a blue light emitting diode and a yellow green light emitting diode are arranged close to each other, and their luminance ratio is set to about 0.8 to 1.2. . Further, it is preferable in terms of color mixing that the distance between the blue light emitting diode and the yellow green light emitting diode is within about 1 mm. Note that the emission center wavelength of the blue light emitting diode is about 450 to 490 nm, and the emission center wavelength of the yellow green light emitting diode is about 540 to 580 nm.

【０００５】[0005]

【発明の実施の形態】次に、本発明の実施形態を説明す
るが、それはあくまで本発明に基づいて採択された例示
的な実施形態であり、本発明をその実施形態に特有な事
項に基づいて限定解釈してはならず、本発明の技術的範
囲は、請求項に示した事項さらにはその事項と実質的に
等価である事項に基づいて定めなければならない。BEST MODE FOR CARRYING OUT THE INVENTION Next, an embodiment of the present invention will be described, but it is merely an exemplary embodiment adopted based on the present invention, and the present invention is based on matters peculiar to the embodiment. However, the technical scope of the present invention should be determined based on the matters shown in the claims and the matters substantially equivalent to the matters.

【０００６】図示の実施形態は、青色発光ダイオードＢ
と黄緑色発光ダイオードＹＧを近接配置するとともに、
それらの輝度比を約０．８〜１．２にした疑似白色発光
装置である。そして、青色発光ダイオードＢと黄緑色発
光ダイオードＹＧの間隔ｄを約１ｍｍ以内にすると混色
上、好ましい。なお、青色発光ダイオードＢの発光中心
波長を約４５０〜４９０ｎｍ、黄緑色発光ダイオードＹ
Ｇの発光中心波長を約５４０〜５８０ｎｍとしている。The illustrated embodiment is a blue light emitting diode B.
And the yellow-green LED YG are arranged close to each other,
It is a pseudo-white light emitting device having a luminance ratio of about 0.8 to 1.2. Further, it is preferable in terms of color mixing that the distance d between the blue light emitting diode B and the yellow green light emitting diode YG is within about 1 mm. The emission center wavelength of the blue light emitting diode B is approximately 450 to 490 nm, and the yellow green light emitting diode Y
The emission center wavelength of G is about 540 to 580 nm.

【０００７】図は本発明を白熱電球代替の照明ランプに
適用したものを示し、上部に口金１を設けた白色半透光
性のグローブ２の内部に基板３を設けて、この基板３に
青色発光ダイオードＢ…と黄緑色発光ダイオードＹＧ…
をチップ実装している。この図示例では、１個の青色発
光ダイオードＢの輝度が１個の黄緑色発光ダイオードＹ
Ｇの輝度の約３倍のため、青色発光ダイオードＢを１個
に対して黄緑色発光ダイオードＹＧを３個実装して、両
者の実装数の比を１：３とし、トータルとして両者の輝
度比をほぼ等しくしている。The figure shows the present invention applied to an illumination lamp as an alternative to an incandescent light bulb, in which a substrate 3 is provided inside a white semi-transparent globe 2 having a base 1 provided on the top thereof, and the substrate 3 is blue. Light-emitting diode B ... and yellow-green light-emitting diode YG ...
Is mounted on a chip. In this illustrated example, the brightness of one blue light emitting diode B is one yellow green light emitting diode Y.
Since the brightness of G is about 3 times, the ratio of the number of mounting of both blue-light emitting diode B to one of yellow-green light-emitting diode YG is set to 1: 3, and the total luminance ratio of both. Are almost equal.

【０００８】従って、１個の青色発光ダイオードＢの輝
度と１個の黄緑色発光ダイオードＹＧの輝度が同等であ
れば、青色発光ダイオードＢの実装数と黄緑色発光ダイ
オードＹＧの実装数をほぼ等しくすればよい。要は、青
色発光ダイオードＢ…群と黄緑色発光ダイオードＹＧ…
群の輝度比をトータルとして約０．８〜１．２にすれ
ば、疑似白色で発光可能となる。Therefore, if the brightness of one blue light emitting diode B and the brightness of one yellow green light emitting diode YG are equal, the number of blue light emitting diodes B and the number of yellow green light emitting diodes YG mounted are substantially equal. do it. In short, the group of blue light emitting diodes B ... And the yellow green light emitting diodes YG ...
When the total luminance ratio of the group is set to about 0.8 to 1.2, it is possible to emit light in pseudo white.

【０００９】また、図３のように、青色発光ダイオード
Ｂ…と黄緑色発光ダイオードＹＧ…は例えば、すべて直
列接続され、抵抗４と整流ダイオード５と抵抗６を介し
て交流電源７に接続されて点灯される。なお、図示例の
ように、発光ダイオードが光拡散性のグローブ２で覆わ
れている場合は、その拡散の程度にもよるが、青色発光
ダイオードＢと黄緑色発光ダイオードＹＧの間隔ｄをあ
えて約１ｍｍ以内にする必要なく疑似的に混合白色光が
得られる。Further, as shown in FIG. 3, the blue light emitting diodes B ... And the yellow green light emitting diodes YG ... Are all connected in series, for example, and are connected to the AC power supply 7 via the resistor 4, the rectifying diode 5 and the resistor 6. It is lit. In the case where the light emitting diode is covered with the light diffusing globe 2 as in the illustrated example, the distance d between the blue light emitting diode B and the yellow green light emitting diode YG is intentionally changed depending on the degree of diffusion. Pseudo mixed white light can be obtained without having to be within 1 mm.

【００１０】本実施形態によれば、発光ダイオードのみ
を用いた好適な疑似白色発光装置を提供できるようにな
った。According to this embodiment, it is possible to provide a suitable pseudo white light emitting device using only a light emitting diode.

【図面の簡単な説明】[Brief description of drawings]

【図１】本発明の実施形態を示す外観斜視図FIG. 1 is an external perspective view showing an embodiment of the present invention.

【図２】同基板平面図FIG. 2 is a plan view of the substrate.

【図３】同回路図[Figure 3] Circuit diagram

【符号の説明】[Explanation of symbols]

Ｂ 青色発光ダイオード ＹＧ 黄緑色発光ダイオード B Blue light emitting diode YG Yellow-green LED

Claims (3)

【特許請求の範囲】[Claims] 【請求項１】 青色発光ダイオードと黄緑色発光ダイオ
ードを近接配置するとともに、それらの輝度比を約０．
８〜１．２にした疑似白色発光装置。1. A blue light emitting diode and a yellow green light emitting diode are arranged close to each other, and their luminance ratio is about 0.
The pseudo-white light emitting device of 8 to 1.2. 【請求項２】 請求項１において、青色発光ダイオード
と黄緑色発光ダイオードの間隔を約１ｍｍ以内にした疑
似白色発光装置。2. The pseudo white light emitting device according to claim 1, wherein the distance between the blue light emitting diode and the yellow green light emitting diode is within about 1 mm. 【請求項３】 請求項１または２において、青色発光ダ
イオードの発光中心波長を約４５０〜４９０ｎｍ、黄緑
色発光ダイオードの発光中心波長を約５４０〜５８０ｎ
ｍとした疑似白色発光装置。3. The light emitting center wavelength of a blue light emitting diode according to claim 1 or 2, wherein the light emitting center wavelength of the blue light emitting diode is about 450 to 490 nm, and the light emitting center wavelength of a yellow green light emitting diode is about 540 to 580 n.
m is a pseudo white light emitting device.
JP2001268922A 2001-09-05 2001-09-05 Quasi white light emitting device Pending JP2003078175A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2001268922A JP2003078175A (en) 2001-09-05 2001-09-05 Quasi white light emitting device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2001268922A JP2003078175A (en) 2001-09-05 2001-09-05 Quasi white light emitting device

Publications (1)

Publication Number Publication Date
JP2003078175A true JP2003078175A (en) 2003-03-14

Family

ID=19094831

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2001268922A Pending JP2003078175A (en) 2001-09-05 2001-09-05 Quasi white light emitting device

Country Status (1)

Country Link
JP (1) JP2003078175A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007060989A (en) * 2005-08-31 2007-03-15 Kokusai Kako Kk Fish-luring lamp device
JP2008218998A (en) * 2007-02-09 2008-09-18 Toshiba Lighting & Technology Corp Light emitting device
JP2010511269A (en) * 2006-11-27 2010-04-08 フィリップス ソリッド−ステート ライティング ソリューションズ インコーポレイテッド Method and apparatus for providing uniform projection illumination
US10431776B2 (en) * 2013-08-30 2019-10-01 Lg Display Co., Ltd. White organic light emitting diode and display device using the same

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007060989A (en) * 2005-08-31 2007-03-15 Kokusai Kako Kk Fish-luring lamp device
JP4630160B2 (en) * 2005-08-31 2011-02-09 国際化工株式会社 Fish collection device
JP2010511269A (en) * 2006-11-27 2010-04-08 フィリップス ソリッド−ステート ライティング ソリューションズ インコーポレイテッド Method and apparatus for providing uniform projection illumination
JP2008218998A (en) * 2007-02-09 2008-09-18 Toshiba Lighting & Technology Corp Light emitting device
US10431776B2 (en) * 2013-08-30 2019-10-01 Lg Display Co., Ltd. White organic light emitting diode and display device using the same

Similar Documents

Publication Publication Date Title
US8362499B2 (en) Solid state emitter packages including accessory lens
JP4386693B2 (en) LED lamp and lamp unit
JP4989936B2 (en) Lighting device
US8672517B2 (en) Light-emitting module
JP4458804B2 (en) White LED
US8193735B2 (en) LED lamp with high efficacy and high color rendering and manufacturing method thereof
US20060067073A1 (en) White led device
US20070284563A1 (en) Light emitting device including rgb light emitting diodes and phosphor
US20100045168A1 (en) White light light-emitting diodes
JP2010129583A (en) Lighting fixture
JP2007258202A (en) Illumination light source
US20110286210A1 (en) Led light source in a single-package for raising color-rendering index
US9746145B2 (en) Light-emitting device with non-successive placement of light-emitting elements of one color, illumination light source having the same, and illumination device having the same
US11315908B2 (en) LED package structure having improved brightness
JPH11177143A (en) Light source for illumination employing led and illuminator
JP2002289925A (en) Light-emitting diode
JP2007214603A (en) Led lamp and lamp unit
JP2003298118A (en) Led lighting device
JP2001184910A (en) Light source for illumination and illumination apparatus using light emitting diode
JP2006352030A (en) Light emitting diode
JP6712768B2 (en) Light emitting device and lighting device
KR20100076655A (en) White light emitting device
JP2003078175A (en) Quasi white light emitting device
JP2006080334A (en) Led light emitting device
JP2002158376A (en) Light emitting diode illuminator