WO2008064586A1 - Structure d'une source de lumière de surface pour luminaire et groupes del associés - Google Patents

Structure d'une source de lumière de surface pour luminaire et groupes del associés Download PDF

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Publication number
WO2008064586A1
WO2008064586A1 PCT/CN2007/070447 CN2007070447W WO2008064586A1 WO 2008064586 A1 WO2008064586 A1 WO 2008064586A1 CN 2007070447 W CN2007070447 W CN 2007070447W WO 2008064586 A1 WO2008064586 A1 WO 2008064586A1
Authority
WO
WIPO (PCT)
Prior art keywords
light
light guide
guide plate
light source
lighting fixture
Prior art date
Application number
PCT/CN2007/070447
Other languages
English (en)
Chinese (zh)
Inventor
Shaohua Ren
Original Assignee
Shaohua Ren
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
Priority claimed from CNA2007100983243A external-priority patent/CN101144570A/zh
Application filed by Shaohua Ren filed Critical Shaohua Ren
Publication of WO2008064586A1 publication Critical patent/WO2008064586A1/fr

Links

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
    • 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
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0066—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form characterised by the light source being coupled to the light guide
    • G02B6/0068—Arrangements of plural sources, e.g. multi-colour light sources
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
    • H05B45/30—Driver circuits
    • H05B45/395—Linear regulators
    • 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]
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0033—Means for improving the coupling-out of light from the light guide
    • G02B6/0035—Means for improving the coupling-out of light from the light guide provided on the surface of the light guide or in the bulk of it
    • G02B6/0038—Linear indentations or grooves, e.g. arc-shaped grooves or meandering grooves, extending over the full length or width of the light guide
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0066—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form characterised by the light source being coupled to the light guide
    • G02B6/0073—Light emitting diode [LED]
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0081—Mechanical or electrical aspects of the light guide and light source in the lighting device peculiar to the adaptation to planar light guides, e.g. concerning packaging
    • G02B6/0083—Details of electrical connections of light sources to drivers, circuit boards, or the like
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
    • Y02B20/30—Semiconductor lamps, e.g. solid state lamps [SSL] light emitting diodes [LED] or organic LED [OLED]

Definitions

  • the present invention relates to a structure of a surface light source for a lighting fixture and an LED group thereof. Background technique
  • the invention is mainly a novel LED illumination surface light source and the improvement and perfection of its LED group structure.
  • the present invention uses LED parallel resistance to prevent static electricity accumulation, and at the same time, the LEDs in the same LED group are connected in parallel with each other, and then connected to a regulated DC power supply, so that when one or When a few LEDs fail, it will not affect the work of the remaining LEDs.
  • the present invention is achieved by a structure for a surface light source for a lighting fixture and an LED group thereof, comprising one or more light guide plates, one or more LED groups, and a power supply, wherein the light guide plate has two a light emitting surface and a plurality of peripheral side surfaces, wherein the illumination direction of the light guide plate is a front surface, and an opposite direction of the illumination direction is a back surface, wherein the light guide plate is provided with a light guiding pattern, the LED group is connected to the power source, and the LED group is disposed On the side of the periphery of the light guide plate, and entering light through the side thereof, wherein each of the LED groups includes a plurality of LEDs, each of the LED groups is associated with all other LEDs in the same LED group Connected in parallel with each other, each of the LED groups is connected in parallel with at least one resistor.
  • the present invention may further include one or more reflecting plates, which are planar, or partially cylindrical, or partially spherical, or partially prismatic, or U-shaped, composed of a single body or a plurality of individuals,
  • the reflector is attached to the light-emitting surface on the back side of the light guide plate or separated from the light guide plate.
  • the reflective surface may be a metal plating film directly plated on the light emitting surface on the back side of the light guide plate or a flat surface or a curved surface formed by other specular reflection materials.
  • the reflector may be a totally reflective material or may be translucent.
  • the power source is a constant voltage DC power source, and the constant voltage value thereof may be adjusted, and the voltage or current fluctuation thereof is less than 5%.
  • the light guide plate may be planar, and may be formed into a regular shape such as a rectangle, an ellipse or a semi-ellipse, or may be formed into an irregular shape; the light guide plate may also be a spherical surface, an elliptical spherical surface, a cylindrical surface, or Elliptical cylinder, prism face, U shape or consist of a part of the above surface.
  • the light guide plate may be a single individual or may be composed of a plurality of individuals.
  • the light guiding pattern may be formed into various regular patterns or irregular patterns composed of dots or lines as needed.
  • the light guiding pattern may be formed by laser engraving, or mechanical engraving, ink printing, or injection molding on the light emitting surface of the light guide plate.
  • the LED group of the invention adopts a parallel connection method and a parallel resistance, thereby avoiding the problem of reliability degradation caused by an increase in the number of LEDs and the hazard of electrostatic breakdown, even if individual LEDs in the LED group fail, the lamps are not affected. Normal work and longevity.
  • FIG. 1 is a schematic exploded view of an embodiment of the present invention
  • FIG. 2 is a circuit diagram of the embodiment of Figure 1. detailed description
  • the embodiment includes a light guide plate 11 and an LED.
  • This embodiment has only one LED group 12 in which all of the LEDs are connected in parallel with each other, and a resistor 14 is placed on the PCB board 16 and connected in parallel with all of the LEDs in the LED group.
  • LED groups 12 There may be a plurality of LED groups 12 as well. Depending on the needs, it can be arranged on one side, on both sides or in a multilateral arrangement. In order to make the LED group emit more light into the side of the light guide plate, the LED group can also be semi-coated with a highly reflective material.
  • the light guiding pattern 15 of the present embodiment is a regular pattern formed by a line and is densified as it goes away from the light source.
  • the light guiding pattern in the embodiment is a method in which a laser engraving machine is engraved on a light emitting surface of a light guiding plate, and a method of printing the reflective ink can also be used.
  • This embodiment does not have a reflector. If the light is to be concentrated on one side of the light guide plate, a reflector may be added, and the side of the reflector plate should have a high reflectivity on one side of the light guide plate, and the reflector plate may be transparent or totally reflective.
  • the resistor 14 is placed in the circuit of the LED group 12 and connected in parallel with the LED.
  • the resistor 14 can also be placed in the power supply circuit and connected in parallel with the power output port.
  • the material of the light guide plate 11 is acrylic, glass or polycarbonate.
  • the power supply 13 of the present example is an adjustable constant voltage DC power supply, and provides constant voltage direct current to the LED group, and the voltage fluctuation should be less than 5% to avoid the "stroboscopic" effect.
  • FIG. 2 is a circuit diagram of the embodiment of FIG. 1, in which the LED group 12 is connected in parallel with a resistor 14 and connected to the power source 13.

Abstract

L'invention concerne une structure d'une source de lumière de surface pour luminaire et groupes DEL associés qui comprend une plaque de guidage de lumière (11), des groupes DEL (12) et une alimentation électrique (13). Des motifs de guidage de lumière (15) sont installés sure la plaque de guidage de lumière (11), les groupes DEL (12) sont reliés à l'alimentation électrique (13) et installés sur le côté de la plaque de guidage de lumière (11) de façon à émettre de la lumière dans la direction du côté de celle-ci. Chaque groupe DEL (12) comprend plusieurs DEL, chaque DEL de chaque groupe est connectée en parallèle à toutes les autres DEL du même groupe, et chaque DEL des groupes DEL (12) est connectée en parallèle à au moins une résistance (14).
PCT/CN2007/070447 2006-11-27 2007-08-10 Structure d'une source de lumière de surface pour luminaire et groupes del associés WO2008064586A1 (fr)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
CN200610145355.5 2006-11-27
CN200610145355 2006-11-27
CN200720004873 2007-02-12
CN200720004873.5 2007-02-12
CNA2007100983243A CN101144570A (zh) 2006-08-14 2007-04-20 用于照明灯具的面光源及其led组的结构
CN200710098324.3 2007-04-20

Publications (1)

Publication Number Publication Date
WO2008064586A1 true WO2008064586A1 (fr) 2008-06-05

Family

ID=39467440

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2007/070447 WO2008064586A1 (fr) 2006-11-27 2007-08-10 Structure d'une source de lumière de surface pour luminaire et groupes del associés

Country Status (1)

Country Link
WO (1) WO2008064586A1 (fr)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0832121A (ja) * 1994-07-20 1996-02-02 Nichia Chem Ind Ltd 面状光源
JP2000127847A (ja) * 1998-10-23 2000-05-09 Toyota Auto Body Co Ltd 車両用室内灯
CN2392981Y (zh) * 1999-10-28 2000-08-23 宋义 均匀高效的前光源
CN2442089Y (zh) * 2000-08-17 2001-08-08 单志尧 组合式发光二极管照明装置
JP2004029370A (ja) * 2002-06-26 2004-01-29 Advanced Display Inc 面状光源装置及びそれを用いた液晶表示装置
CN1807969A (zh) * 2005-01-17 2006-07-26 西铁城电子股份有限公司 发光设备

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0832121A (ja) * 1994-07-20 1996-02-02 Nichia Chem Ind Ltd 面状光源
JP2000127847A (ja) * 1998-10-23 2000-05-09 Toyota Auto Body Co Ltd 車両用室内灯
CN2392981Y (zh) * 1999-10-28 2000-08-23 宋义 均匀高效的前光源
CN2442089Y (zh) * 2000-08-17 2001-08-08 单志尧 组合式发光二极管照明装置
JP2004029370A (ja) * 2002-06-26 2004-01-29 Advanced Display Inc 面状光源装置及びそれを用いた液晶表示装置
CN1807969A (zh) * 2005-01-17 2006-07-26 西铁城电子股份有限公司 发光设备

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