WO2008049377A1 - Source de lumière de surface ayant une surface réfléchissante incurvée pour l'éclairage - Google Patents

Source de lumière de surface ayant une surface réfléchissante incurvée pour l'éclairage Download PDF

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Publication number
WO2008049377A1
WO2008049377A1 PCT/CN2007/070974 CN2007070974W WO2008049377A1 WO 2008049377 A1 WO2008049377 A1 WO 2008049377A1 CN 2007070974 W CN2007070974 W CN 2007070974W WO 2008049377 A1 WO2008049377 A1 WO 2008049377A1
Authority
WO
WIPO (PCT)
Prior art keywords
guide plate
light
light guide
illumination
light source
Prior art date
Application number
PCT/CN2007/070974
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 CNA2006101611332A external-priority patent/CN101029716A/zh
Application filed by Shaohua Ren filed Critical Shaohua Ren
Publication of WO2008049377A1 publication Critical patent/WO2008049377A1/fr

Links

Classifications

    • 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
    • G02B6/005—Means for improving the coupling-out of light from the light guide provided by one optical element, or plurality thereof, placed on the light output side of the light guide
    • G02B6/0055—Reflecting element, sheet or layer
    • 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

Definitions

  • the invention relates to a surface light source for illumination composed of a curved reflecting surface and a light guide plate
  • the light guide surface light source, the reflective plate or the reflective surface used are flat, and are attached to the back surface of the light guide plate.
  • the light guide surface light source is used for illumination, there is a problem that the light dispersion is dispersed and the light intensity is not concentrated, and the light guide plate loses the crystal clear and translucent characteristics, which affects the appearance.
  • Increasing the area of the light guide plate does not effectively increase the illuminance.
  • the LED group is used as the light source of the light guide plate, since the package volume of the low-cost low-power LED limits the arrangement density of the LED group, the intensity of the incident light is limited, and the light-emitting layer is used for illumination when the light guide plate is used for illumination. The degree of requirements is even higher.
  • a large area of the light guide plate uses a fluorescent tube as a light source, and when used for illumination, there are “stroke”, radiation, and the like, and contains harmful substances "mercury".
  • the present invention uses a non-adhesive curved reflector or a curved reflective surface to make the light source of the light guide plate more concentrated and beautiful in appearance.
  • the LED group of the present invention is used as a light source of the light guide plate, and is environmentally friendly, energy-saving and energy-saving.
  • a surface light source for illumination comprising a curved reflecting surface and a light guide plate, comprising a light guide plate, a light source, a power source and a curved reflecting surface, wherein the light guiding plate is provided with a light guiding pattern
  • the light source is connected to the power source; the light source is disposed on a side of the periphery of the light guide plate, and receives light through a side surface thereof; the curved surface is concave, curved, or prismatic; the curved surface The concave surface guides the light panel, and the reflected light is emitted from the front surface of the light guide plate.
  • the curved reflecting surface is concave, curved or prismatic, specifically: partial spherical surface, partial ellipsoidal surface, partial cylindrical surface, partial elliptical cylinder surface, partial prism surface, cone surface, pyramid surface, conical surface or U Shape, composed of a single individual or spliced by multiple individuals.
  • the light guide plate has two light-emitting surfaces and a plurality of peripheral side surfaces.
  • the illumination direction of the light guide plate is a front surface, and the opposite direction of the illumination direction is a back surface, and the curved surface of the curved surface has a high reflection on the concave surface on the side of the light guide plate. Rate, reflected light is emitted from the front of the light guide.
  • the focus or reflected light convergence point of the curved reflecting surface should be located more than 10 cm away from the front side of the light guide plate.
  • the light source is an LED group
  • the LED group is one or more
  • each of the LED groups is connected in parallel with all other LEDs in the same LED group, each of the LED groups It is composed of a plurality of LEDs, and each LED is connected in parallel with at least one resistor, wherein one of the resistors is connected in parallel to one LED or a plurality of LEDs or all of the LEDs.
  • the surface light source further includes an LED group cladding plate, the cladding plate half encloses the LED group, so that the light emitted by the LED group completely enters the light guide plate.
  • the curved reflecting surface may be a total reflection material or may be translucent.
  • 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 invention replaces the attached flat reflector of the current light guide surface light source with a curved reflecting surface, so that the light on the back side of the light guide plate can reflect the illumination area concentrated outside the front surface of the light guide plate, thereby improving the illumination brightness.
  • the light guide plate since the light guide plate is not attached to the reflector, it is crystal clear and bright, and the appearance is excellent.
  • LEDUse LED group as the incident light source of the light guide plate, which is healthy, environmentally friendly and energy-saving.
  • the LEDs in the LED group are connected in parallel and use a constant voltage DC power supply, which effectively improves the reliability of the equipment.
  • Figure 1 is a schematic exploded view of the present invention
  • Figure 2 is a side elevational view of the same embodiment of Figure 1. detailed description
  • Figure 1 is a schematic exploded view of the present invention. Shown in the figure is an embodiment of the present invention in which the light guide plate is rectangular, and the curved surface of the curved cylindrical surface is curved, and the backlight pattern is a line diagram, and the light is incident on one side.
  • the present invention includes a light guide plate 11 provided with a light guiding pattern 12, an LED group 13 incident light from a side surface of the light guide plate, a curved reflecting surface 14 of a curved cylindrical surface, a power source 15 and a PCB board 16 .
  • 13 light is incident from the side of the light guide plate to cause the light guide plate to emit light to form a double-sided surface light source.
  • the light emitted from the light guide plate to the curved reflecting surface is reflected and concentrated on the illumination area outside the front surface of the light guide plate to realize the function of illumination.
  • the LED group 13 can be lighted on one side, two sides or on multiple sides, and can be soldered with the PCB board 16 or directly attached to the light guide plate.
  • the power supply 15 is a constant voltage DC power supply, and its constant voltage value can be adjusted or not adjustable, and its voltage fluctuation should be less than 5% to avoid "strobe".
  • the light guide plate 11 can be formed in various shapes, and the light guiding pattern can be dotted or lined, and the light source 13 can also be half-coated to allow more light to enter the light guide plate from the side.

Abstract

La présente invention concerne une source de lumière de surface ayant une surface réfléchissante incurvée (14) pour l'éclairage, qui comprend une plaque guide de lumière (11), une source de lumière (13), une source d'alimentation (15) et la surface réfléchissante incurvée (14). Des motifs de guide de lumière (12) sont prévus sur la plaque guide de lumière (11). La source de lumière (13) est raccordée à la source d'alimentation (15). La source lumineuse (13) est disposée sur le côté de la plaque guide de lumière (11) de manière à émettre de la lumière vers son côté. La surface réfléchissante incurvée (14) est concave, arquée ou prismatique. La surface concave de la surface réfléchissante incurvée (14) fait face à la plaque guide de lumière (11) et la lumière réfléchissante émet depuis la surface avant de la plaque guide de lumière (11).
PCT/CN2007/070974 2006-10-27 2007-10-26 Source de lumière de surface ayant une surface réfléchissante incurvée pour l'éclairage WO2008049377A1 (fr)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
CN200610150100 2006-10-27
CN200610150100.8 2006-10-27
CN200610137845 2006-11-06
CN200610137845.0 2006-11-06
CN200610161133.2 2006-11-30
CNA2006101611332A CN101029716A (zh) 2006-08-14 2006-11-30 由曲面反射面和导光板构成的用于照明的面光源

Publications (1)

Publication Number Publication Date
WO2008049377A1 true WO2008049377A1 (fr) 2008-05-02

Family

ID=39324154

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2007/070974 WO2008049377A1 (fr) 2006-10-27 2007-10-26 Source de lumière de surface ayant une surface réfléchissante incurvée pour l'éclairage

Country Status (1)

Country Link
WO (1) WO2008049377A1 (fr)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1296604A (zh) * 1999-03-02 2001-05-23 松下电器产业株式会社 照明装置和具有该照明装置的显示装置
CN1410817A (zh) * 2001-09-21 2003-04-16 欧姆龙株式会社 面光源装置
JP2003272426A (ja) * 2002-03-15 2003-09-26 Columbia Music Entertainment Inc 照明装置
CN1585911A (zh) * 2001-12-27 2005-02-23 三星电子株式会社 液晶显示装置
JP2006024409A (ja) * 2004-07-07 2006-01-26 Matsushita Electric Ind Co Ltd 照明装置
CN1807969A (zh) * 2005-01-17 2006-07-26 西铁城电子股份有限公司 发光设备
CN101029716A (zh) * 2006-08-14 2007-09-05 任少华 由曲面反射面和导光板构成的用于照明的面光源

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1296604A (zh) * 1999-03-02 2001-05-23 松下电器产业株式会社 照明装置和具有该照明装置的显示装置
CN1410817A (zh) * 2001-09-21 2003-04-16 欧姆龙株式会社 面光源装置
CN1585911A (zh) * 2001-12-27 2005-02-23 三星电子株式会社 液晶显示装置
JP2003272426A (ja) * 2002-03-15 2003-09-26 Columbia Music Entertainment Inc 照明装置
JP2006024409A (ja) * 2004-07-07 2006-01-26 Matsushita Electric Ind Co Ltd 照明装置
CN1807969A (zh) * 2005-01-17 2006-07-26 西铁城电子股份有限公司 发光设备
CN101029716A (zh) * 2006-08-14 2007-09-05 任少华 由曲面反射面和导光板构成的用于照明的面光源

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