WO2009067844A1 - Dispositif d'éclairage à diode électroluminescente - Google Patents

Dispositif d'éclairage à diode électroluminescente Download PDF

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Publication number
WO2009067844A1
WO2009067844A1 PCT/CN2007/003360 CN2007003360W WO2009067844A1 WO 2009067844 A1 WO2009067844 A1 WO 2009067844A1 CN 2007003360 W CN2007003360 W CN 2007003360W WO 2009067844 A1 WO2009067844 A1 WO 2009067844A1
Authority
WO
WIPO (PCT)
Prior art keywords
light
lighting device
led lighting
lamp cover
opening
Prior art date
Application number
PCT/CN2007/003360
Other languages
English (en)
Chinese (zh)
Inventor
Chihua Shieh
Original Assignee
Chihua Shieh
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 Chihua Shieh filed Critical Chihua Shieh
Priority to PCT/CN2007/003360 priority Critical patent/WO2009067844A1/fr
Publication of WO2009067844A1 publication Critical patent/WO2009067844A1/fr

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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
    • F21V7/00—Reflectors for light sources
    • 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
    • F21V7/00—Reflectors for light sources
    • F21V7/0008—Reflectors for light sources providing for indirect lighting
    • 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 invention relates to a lighting device, in particular to an LED lighting device. Background technique
  • a light emitting diode is a special kind of diode. Like ordinary diodes, light-emitting diodes are composed of semiconductor chips which are previously subjected to processes such as implantation or doping to produce a PN junction structure. Like other diodes, the current in the LED can easily flow from the P-pole (positive) to the N-pole (negative), but not in the opposite direction. Two different carriers: Holes and electrons flow from the electrode to the PN under different electrode voltages. When the holes and electrons meet, they release energy in the form of photons. When the applied voltage of the PN junction is positive, a large current flows, which is called a positive bias. If the voltage polarity is reversed, then it is called reverse bias, when only a small current flows through the device and does not illuminate.
  • LEDs Last longer than traditional lighting bulbs, LEDs are currently being actively developed for use in a variety of lighting applications, but also because LEDs are much more efficient than traditional lighting such as incandescent bulbs and household tungsten lamps.
  • the light bulb is easy to produce glare when it is illuminated.
  • the glare is what the average person calls the blinking light, that is, the glare of the eye when the light is directly viewed from the light source (direct glare), and the glare that is reflected by the light to the eye (indirect glare). Or indoor main lamp and table lamp light and dark ratio is too large (contrast glare).
  • the present invention provides a lighting diode lighting device that can be used to solve the problems that the conventional lighting device fails to achieve.
  • the LED lighting device comprises a first lamp cover, the first lamp cover is covered with a light source, and the light generated by the light source is at least one time through the inside of the first lamp cover.
  • the first lampshade is illuminated, wherein the light source comprises a plurality of light emitting diodes and a power source, and the plurality of light emitting diodes are arranged in an array, and the plurality of light emitting diodes are electrically coupled to the power source to achieve a positive bias.
  • the light source comprises a plurality of light emitting diodes and a power source, and the plurality of light emitting diodes are arranged in an array, and the plurality of light emitting diodes are electrically coupled to the power source to achieve a positive bias.
  • the first lamp cover comprises an opening portion, a reflecting portion and a shielding portion, wherein at least one opening portion is located between the shielding portion and the reflecting portion.
  • the light generated by the light source is irradiated with the first lamp cover through the opening portion, and the reflecting portion is an arc-shaped structure.
  • the arc-shaped structure includes a convex surface and a concave surface, and the light generated by the light source is reflected by the concave surface at least once.
  • the shielding portion reflects the direct light that is directly emitted by the light source to the at least one opening portion, and reflects the direct light to the reflecting portion, so that all the light generated by the light source can be reflected at least once to prevent the light from directly emitting the first lampshade. This can enhance the prevention of glare.
  • the above-mentioned LED lighting device further comprises a second lampshade, wherein the second lampshade has the same structure as the first lampshade, and the second lampshade is symmetrically arranged with the first lampshade.
  • 1 is a schematic structural view of an LED lighting device
  • 2A, 2B, 3 and 4 are schematic structural views of a reflecting portion
  • Figure 5 is a schematic view showing the structure of the protruding portion
  • FIG. 6 and FIG. 7 are schematic structural views of a light-emitting diode illumination device arranged symmetrically;
  • FIG. 8 is a schematic view showing a relationship in which a direction in which a light source and an opening portion are orthogonal to each other;
  • Figure 9 is a schematic view showing the relationship between the light source and the opening in the opposite direction
  • Figure 10 is a schematic structural view of an LED lighting device having a protective layer
  • Figure 1 is a schematic structural view of a plurality of light emitting diodes arranged in a line array
  • Figure 12 is a light distribution diagram of the illuminating device for symmetrical arrangement
  • Figure 13 is a schematic view of the structure of the cylindrical lampshade. detailed description
  • an embodiment of the present invention discloses an LED lighting device 100 , which includes a first lamp cover 120 , wherein the first lamp cover 120 is coated with a light source 1 1 0 . And the light generated by the light source 110 is illuminated at least once inside the first lampshade 120 to illuminate the first lampshade 120 to achieve the purpose of reducing glare, wherein the light source 1 10 is illuminated by a plurality of lights
  • the diodes are composed, and a plurality of light emitting diodes are arranged in an array, such as a linear array, an arc array, a rectangular array, and the like.
  • the first lamp cover includes at least one opening portion 1 2 2, a reflection portion 1 2 4 and a shielding portion 1 2 6 , wherein the at least one opening portion 1 2 2 is located at the shielding portion 1 26 and the reflection portion 1 2 Between 4.
  • the light generated by the light source 110 is at least once reflected by the reflecting portion 1 2 4 and reaches at least one opening 1 2 2, and the first lamp cover 120 is illuminated, as indicated by a solid arrow.
  • the shielding portion reflects the direct light that is directly incident on the at least one opening portion 1 2 2 by the light source 110, and reflects the direct light to the reflecting portion 1 2 4 as indicated by the dotted arrow, so that the light source 1 1 can be All the light generated by 0 is reflected at least once, so as to prevent the light from directly emitting the first lampshade 120, and thus it is possible to enhance the prevention of glare.
  • the above-mentioned reflecting portion 1 2 4 may be an arc structure (as shown in FIG. 1 ), a bevel structure ( FIG. 2 A ), and a sawtooth structure (as shown in the figure). 2 B), wave structure (as shown in Figure 3), even irregular structure (Figure 4), or other special structure that can reflect light to at least one opening 1 2 2, can equally replace the reflection of the present invention
  • the portion 1 2 4 and the present invention exemplifies the LED lighting device 100 having the curved structure reflecting portion 1 2 4 as a preferred embodiment. As shown in FIG.
  • the above-mentioned reflecting portion 1 24 is an arc-shaped structure, and the arc-shaped structure includes a convex surface 1 28 and a concave surface 1 3 0 , wherein the light generated by the light source 110 is via
  • the concave surface 1 3 ⁇ reflects at least once and reaches at least one opening portion 1 2 2 .
  • the reflecting portion 1 2 4 further includes a protruding portion 1 3 2 , wherein the protruding portion 1 3 2 is a portion where the reflecting portion 1 2 4 protrudes adjacent to the at least one mouth portion 1 2 2 , as shown in the figure. 5 is shown.
  • the protrusion 1 3 2 can increase the effective range of the reflection portion 1 2 4 , and can ensure that the light generated by the light source 110 can pass through at least one reflection to illuminate the lamp cover 120.
  • the above-mentioned LED lighting device 100 may further include a second lamp cover 160 to enhance the illumination brightness, wherein the second lamp cover 160 is of the same structure as the first lamp cover 120, and the second lamp cover 1 2 0 is symmetrically arranged with the first lampshade 140, such as the mouth portion 1 2 2 of the first lampshade 120 is adjacent to the opening of the second lampshade 120 (Fig. 6), the first lampshade The opening portion 1 2 2 of 1 2 0 is opposite to the opening portion of the second lampshade 120 (Fig. 7) and the like.
  • IP070120 IP070120
  • the irradiation direction of the light source 110 may be perpendicular to the irradiation direction of at least one of the openings 1 2 2, or may be opposite to the irradiation direction of at least one of the mouth portions 1 2 2 as shown in the figure. 9 is shown.
  • the at least one opening portion is an internal structure that can cover the protective layer 150 to protect the LED lighting device 100, and the protective layer 150 can be a diffusion plate to enhance the prevention of glare. , as shown in Figure 10.
  • the light source 110 is a plurality of light emitting diodes that can be arranged in a line array, as shown in FIG. Therefore, the LED lighting device 100 of the present invention can replace the conventional fluorescent lamp lighting device.
  • the light when the opening portion 1 2 2 of the first lamp cover 120 is adjacent to the opening portion of the second lamp cover 120, the light can be used by the first lamp cover 120 and the second lamp cover 1 2 0 Convergence.
  • the distribution of light intensity and space after the light is concentrated by the above-mentioned lampshade arrangement can be known, as shown in Fig. 12.
  • the light source of the lampshade arrangement is not limited to only one light emitting diode, and the light emitting diodes may be arranged in a linear array, and the first lampshade 1 2 Q and the second lampshade 120 may be in a columnar form to cover the wire type.
  • the arranged LEDs are shown in Figure 13.
  • white light-emitting diodes are made by coating a layer of light yellow phosphor powder on a blue light-emitting diode (near-UV, wavelength from 450 to 47 nm). It is usually prepared by grinding yttrium-doped yttrium-aluminum-gallium (Ce 3 +:YAG) crystals into a powder and then mixing them in a dense binder. When the LED chip emits blue light, part of the blue light is efficiently converted by the crystal into a predominantly yellow light with a broad spectrum (about 580 nm in the center of the spectrum).
  • single crystal Ce-doped YAG is considered to be a scintillator more than a phosphor.
  • yellow light stimulates the red and green light in the naked eye, the blue light of the light-emitting diode itself is mixed, making it look like white. Light, its color is often called "white of moonlight.”
  • This method of making white light-emitting diodes was developed by Nichia Corporation and has been used in the production of white light-emitting diodes since 1996.
  • the cerium (Ce) incorporated in Ce 3t :YAG may be replaced by other rare earth metal lanthanum or cerium, or even by replacing some or all of the aluminum in YAG.
  • red and green objects appear to be less vivid when illuminated by such a light-emitting diode.
  • Another method of making white light-emitting diodes is similar to fluorescent lamps.
  • Light-emitting diodes emitting near-ultraviolet light are coated with a mixture of two phosphors, one emitting red and blue light, and the other emitting green light.
  • ZnS zinc sulfide
  • the ultraviolet rays cause the epoxy resin in the adhesive to crack and deteriorate, the production is difficult and the life is short.
  • it is less efficient and produces more heat (because Stokes Shift is larger), but the advantage is that the characteristics of the spectrum are better, and the light produced is better.
  • the light-emitting diode of ultraviolet light is relatively low in power, the efficiency is lower than that of the first method, and the brightness is similar.
  • a new approach is to grow an epitaxial layer of zinc selenide on a zinc selenide (ZnSe) substrate. When energized, its active zone emits blue light and the substrate glows yellow, which is white light when mixed.
  • ZnSe zinc selenide
  • the LED lighting devices of various colors can be easily manufactured, and at the same time, the anti-glare effect can be achieved.
  • the LED lighting device of the present invention can also be realized by various other light-emitting diodes, such as TAG, GE (General Electric), Internet ix and TG (Toyoda Gosei) developed by Osram Corporation.
  • TAG TAG
  • GE General Electric
  • Internet ix Internet ix
  • TG Toyoda Gosei
  • the light-emitting diodes developed by companies such as Silicate, or the light-emitting diodes developed by Nemoto with Nitride, etc., can be easily inferred by those skilled in the art, and the present invention will not be described again.

Abstract

La présente invention concerne une diode électroluminescente (100), comprenant une source lumineuse (110) et un premier logement de lampe (120) recevant la source lumineuse (110). Les rayons lumineux produits par la source lumineuse (110) sont réfléchis au moins une fois, puis sont émis par le premier logement de lampe (120). La source lumineuse (110) est un ensemble composé d'une pluralité de diodes électroluminescentes.
PCT/CN2007/003360 2007-11-28 2007-11-28 Dispositif d'éclairage à diode électroluminescente WO2009067844A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/CN2007/003360 WO2009067844A1 (fr) 2007-11-28 2007-11-28 Dispositif d'éclairage à diode électroluminescente

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2007/003360 WO2009067844A1 (fr) 2007-11-28 2007-11-28 Dispositif d'éclairage à diode électroluminescente

Publications (1)

Publication Number Publication Date
WO2009067844A1 true WO2009067844A1 (fr) 2009-06-04

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014130849A (ja) * 2009-06-29 2014-07-10 Lg Innotek Co Ltd 照明装置
CN111406178A (zh) * 2018-01-10 2020-07-10 博姆达株式会社 照明设备

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2205310A (en) * 1939-02-07 1940-06-18 Hilyard R Robinson Combined direct and indirect light and lighting system
EP0067892A1 (fr) * 1981-06-19 1982-12-29 Friedrich Wolff Dispositif pour l'émission de lumière et d'autres radiations
CN1153877A (zh) * 1996-10-27 1997-07-09 郑国军 隐形反照式照明装置
US6558014B2 (en) * 2000-05-18 2003-05-06 Just Normlicht Vertriebs-Gmbh Illustration illuminator
US6945670B2 (en) * 1999-05-20 2005-09-20 Zumtobel Staff Gmbh Luminaire
US6976775B2 (en) * 2003-04-25 2005-12-20 Stanley Electric Co., Ltd. Vehicle lamp
CN2881331Y (zh) * 2005-12-30 2007-03-21 张会光 防晃眼汽车车灯
CN200989981Y (zh) * 2006-08-01 2007-12-12 芈振伟 液晶显示器侧式背光灯的亮度改善结构

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2205310A (en) * 1939-02-07 1940-06-18 Hilyard R Robinson Combined direct and indirect light and lighting system
EP0067892A1 (fr) * 1981-06-19 1982-12-29 Friedrich Wolff Dispositif pour l'émission de lumière et d'autres radiations
CN1153877A (zh) * 1996-10-27 1997-07-09 郑国军 隐形反照式照明装置
US6945670B2 (en) * 1999-05-20 2005-09-20 Zumtobel Staff Gmbh Luminaire
US6558014B2 (en) * 2000-05-18 2003-05-06 Just Normlicht Vertriebs-Gmbh Illustration illuminator
US6976775B2 (en) * 2003-04-25 2005-12-20 Stanley Electric Co., Ltd. Vehicle lamp
CN2881331Y (zh) * 2005-12-30 2007-03-21 张会光 防晃眼汽车车灯
CN200989981Y (zh) * 2006-08-01 2007-12-12 芈振伟 液晶显示器侧式背光灯的亮度改善结构

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014130849A (ja) * 2009-06-29 2014-07-10 Lg Innotek Co Ltd 照明装置
CN111406178A (zh) * 2018-01-10 2020-07-10 博姆达株式会社 照明设备
CN111406178B (zh) * 2018-01-10 2022-09-06 博姆达株式会社 照明设备

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