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CN101290092A - 发光二极管照明装置 - Google Patents

发光二极管照明装置 Download PDF

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CN101290092A
CN101290092A CNA2007102004967A CN200710200496A CN101290092A CN 101290092 A CN101290092 A CN 101290092A CN A2007102004967 A CNA2007102004967 A CN A2007102004967A CN 200710200496 A CN200710200496 A CN 200710200496A CN 101290092 A CN101290092 A CN 101290092A
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emitting diode
light
light emitting
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illuminating apparatus
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章绍汉
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Hongfujin Precision Industry Shenzhen Co Ltd
Hon Hai Precision Industry Co Ltd
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Hongfujin Precision Industry Shenzhen Co Ltd
Hon Hai Precision Industry Co Ltd
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Priority to CNA2007102004967A priority Critical patent/CN101290092A/zh
Priority to US11/861,308 priority patent/US7674009B2/en
Publication of CN101290092A publication Critical patent/CN101290092A/zh
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    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • G02F1/133602—Direct backlight
    • G02F1/133605—Direct backlight including specially adapted reflectors
    • 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
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S4/00—Lighting devices or systems using a string or strip of light sources
    • F21S4/20—Lighting devices or systems using a string or strip of light sources with light sources held by or within elongate supports
    • 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
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • G02F1/133602—Direct backlight
    • G02F1/133603—Direct backlight with LEDs
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • G02F1/133602—Direct backlight
    • G02F1/133611—Direct backlight including means for improving the brightness uniformity
    • 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S362/00—Illumination
    • Y10S362/80—Light emitting diode

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Nonlinear Science (AREA)
  • Optics & Photonics (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mathematical Physics (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • General Physics & Mathematics (AREA)
  • Fastening Of Light Sources Or Lamp Holders (AREA)
  • Planar Illumination Modules (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Abstract

一种发光二极管照明装置，其包括灯箱、电路板、与该电路板电连接的发光二极管、反射件及灯盖。该发光二极管包括出光侧面及顶面。该灯箱包括上盖、下盖、多个侧壁及设于其中一个侧壁上的开口。该电路板位于灯箱下盖。该发光二极管的部分出光侧面朝向该灯箱的开口，顶面面向该灯箱的上盖。该反射件位于该灯箱内，其包括位于下盖上的下反射件，该下反射件对应于该发光二极管开设有通孔，该发光二极管相应穿过该通孔。该发光二极管照明装置还包括对应于该发光二极管的分光元件，其设于该发光二极管与该灯箱开口之间。该灯盖封盖于该开口。上述发光二极管照明装置具有体积较小、出光均匀的优点。

Description

发光二极管照明装置
技术领域
本发明涉及一种照明装置，尤其涉及一种采用发光二极管的照明装置。
背景技术
发光二极管(Light Emitting Diode，LED)，具有环保、较高的机械可靠性与较高的使用寿命的特点，所以采用LED作为照明装置的光源为目前的新趋势。
请参见图1，其为一种现有的长条形的发光二极管照明装置10(下称：LED照明装置)。LED照明装置10包括灯箱11、电路板12、多个侧光式LED 13、反射元件14、多个反射片15及扩散片16。灯箱11为中空长条形框体结构，其具有开口112。电路板12也为长条形，相应设置于灯箱11的底部。多个侧光式LED 13电连接排布于电路板12的上表面。反射元件14也为箱体结构，其可相应由开口112嵌入灯箱11。反射元件14具有多个相互连接的侧壁142和底面反射板144，且侧壁142及底面反射板144的内表面均为反射面。底面反射板144开设有对应于多个LED 13的多个通孔146。多个LED 13的出光部分别穿过多个通孔146。多个反射片15相应设置于多个LED 13的顶部。扩散片16封盖于该灯箱11的开口112处。多个LED 13所发出的光束经由反射元件14的侧壁142或底面反射板144反射后，最终通过扩散片16出射。
然而，尽管上述LED照明装置10中采用LED 13与反射片15搭配的设计，可使LED 13与扩散片16之间的距离适当缩小，但是，LED 13与扩散片16之间仍需有较大的距离才能确保从扩散片16出射的光线均匀，因此LED照明装置10的体积不易进一步缩小，难以适应产品轻薄短小的发展趋势。
发明内容
鉴于上述内容，有必要提供一种体积较小、出光均匀的LED照明装置。
一种发光二极管照明装置，其包括灯箱、电路板、与该电路板电连接的至少一个侧光式发光二极管、反射件及灯盖。该发光二极管包括出光侧面及与该出光侧面相连的顶面。该灯箱包括上盖、与该上盖相对的下盖、多个与该上盖和下盖相连的侧壁及设于其中一个侧壁上的开口。该电路板位于灯箱下盖。该发光二极管的部分出光侧面朝向该灯箱的开口，顶面面向该灯箱的上盖。该反射件位于该灯箱内，其包括位于下盖上的下反射件，该下反射件对应于该发光二极管开设有至少一个通孔，该发光二极管相应穿过该通孔。该发光二极管照明装置还包括对应于该发光二极管的至少一个分光元件，其设于该发光二极管与该灯箱开口之间。该灯盖封盖于该开口。
上述LED照明装置，由于LED的部分出光侧面朝向灯箱的开口，顶面面向灯箱的上盖，使灯箱沿水平方向的空间得到充分的利用，而可使LED与灯盖之间具有足够的间距来避免亮点产生，从而使灯箱在厚度方向上的空间得以缩小，让LED照明装置的整体体积缩小；且LED照明装置在LED与灯箱开口之间还设有分光元件，使得LED垂直出射至灯盖的光线可被分光元件分散开而容易使LED照明装置出射光线均匀。因此LED照明装置容易具有较小的体积，同时可确保出射的光线均匀。
附图说明
图1是一种现有LED照明装置的立体分解示意图。
图2是本发明较佳实施例一的LED照明装置的立体分解示意图。
图3是图2所示LED照明装置组装后的剖面图。
具体实施例
下面将结合附图及实施例对LED照明装置做进一步详细说明。
请参见图2，本发明较佳实施例一的LED照明装置20。LED照明装置20包括灯箱21、电路板22、与电路板22电连接的多个侧光式LED 23、反射件24、灯盖25及多个分光元件26。
灯箱21为中空的长条形结构，其包括上盖211、与上盖211相对的下盖213、多个与上盖211和下盖213相连的侧壁215及设于其中一个侧壁215上的开口217。灯盖25可为扩散片，其封盖于开口217。LED 23包括基座231、出光侧面233及与出光侧面233相连的顶面235。电路板22设置于灯箱21下盖213。LED 23固定于电路板22，其部分出光侧面233朝向灯箱21的开口217，且顶面235面向灯箱21的上盖211。反射件24用于反射LED 23产生的光线从灯盖25射出，反射件24与灯箱21的结构相匹配，也为箱体结构，其由高反射率塑料或具高反射率表面之塑料或金属材料制成。反射件24嵌入灯箱21中，并覆盖于灯箱21的内侧面。反射件24包括上反射件241、与上反射件241相对的下反射件243、多个与上反射件241和下反射件243相连的侧反射件245及开设于下反射件243上的多个通孔247。通孔247与LED 23相对应分布，LED23的顶面235及侧面233相应穿过通孔247，反射件24的下反射件243架设于LED 23的基座231上。
此外，分光元件26位于下反射件243上LED 23与灯箱21开口217之间。本实施例中，为使LED照明装置20具有较好的出光均匀性，LED照明装置20还包括多个第二分光元件27及多个第三分光元件28。分光元件26、第二分光元件27及第三分光元件28的形状为矩形侧面的三棱柱，且第二分光元件27的水平横截面较第三分光元件28大。与LED 23相对应，第二分光元件27与LED 23相对应设于与灯箱21的开口217相对的LED 23的另一侧，具体为第二分光元件27抵靠在侧反射件245与LED 23相对处。第三分光元件28与第二分光元件27相连，设于相邻的两个LED 23之间的侧反射件245上。分光元件26、第二分光元件27及第三分光元件28与反射件24一体成型形成；可以理解，分光元件26、第二分光元件27及第三分光元件28也可先成型，而后再固定于反射件24上。
上述LED照明装置20，由于LED 23的部分出光侧面233朝向灯箱21的开口217，顶面235面向灯箱21的上盖211，使灯箱21在X方向(即水平方向)上的长度空间得到充分的利用，而可使LED 23与灯盖25之间具有足够的间距来避免亮点产生，从而使灯箱21在Y方向(即厚度方向)上的高度空间得以缩小，让LED照明装置20的整体体积缩小。且LED照明装置20在LED 23与灯箱21开口217之间还设有分光元件26，使得LED 23垂直出射至灯盖25的光线可被分光元件26的分光元件26分散，因此易于避免亮点产生确保LED照明装置20出射的光线均匀。此外，垂直出射至与开口217相对的侧反射件245的光线可被分光元件26的第二分光元件27分散，出射至分光元件26的第三分光元件28光线可被第三分光元件28选择性反射，因此还可进一步防止亮点产生确保LED照明装置20出射的光线均匀。因此LED照明装置20容易具有较小的体积，同时可确保出射的光线均匀。
可以理解，下反射件243也可设置于电路板22的表面，使LED 23整个穿过通孔247。反射件24也可由涂布在灯箱21内壁面的涂层构成。分光元件26、第二分光元件27及第三分光元件28的形状可为其他形状，例如V形的薄片、弧形侧面的三棱柱等。此外，当LED照明装置20应用于远场照明时，灯盖25还可为透明板。

Claims (9)

1.一种发光二极管照明装置，其包括灯箱、电路板、与该电路板电连接的至少一个侧光式发光二极管、反射件及灯盖；该发光二极管包括出光侧面及与该出光侧面相连的顶面，其特征在于：该灯箱包括上盖、与该上盖相对的下盖、多个与该上盖和下盖相连的侧壁及设于其中一个侧壁上的开口；该电路板位于灯箱下盖；该发光二极管的部分出光侧面朝向该灯箱的开口，顶面面向该灯箱的上盖；该反射件位于该灯箱内，其包括位于下盖上的下反射件，该下反射件对应于该发光二极管开设有至少一个通孔，该发光二极管相应穿过该通孔；该发光二极管照明装置还包括对应于该发光二极管的至少一个分光元件，其设于该发光二极管与该灯箱开口之间；该灯盖封盖于该开口。
2.如权利要求1所述的发光二极管照明装置，其特征在于：该灯盖为扩散片或透明板。
3.如权利要求1所述的发光二极管照明装置，其特征在于：该至少一个分光元件为表面具有高反射率的塑料材料或金属材料制成。
4.如权利要求1所述的发光二极管照明装置，其特征在于：该下反射件架设于该发光二极管的基座或设于该电路板的表面。
5.如权利要求1所述的发光二极管照明装置，其特征在于：该至少一个分光元件为柱状凸起。
6.如权利要求5所述的发光二极管照明装置，其特征在于：至少一个分光元件为三棱柱，其侧面为平面或弧面。
7.如权利要求6所述的发光二极管照明装置，其特征在于：该发光二极管照明装置还包括至少一个第二分光元件，该第二分光元件为三棱柱，该第二分光元件对应于该至少一个发光二极管，设于与该灯箱开口相对的该发光二极管的另一侧。
8.如权利要求6所述的发光二极管照明装置，其特征在于：该发光二极管照明装置还包括至少一个第三分光元件，该第三分光元件为三棱柱，其与该第二分光元件相连设于与该灯箱开口相对的该发光二极管的另一侧。
9.如权利要求8所述的发光二极管照明装置，其特征在于：该第二分光元件的水平横截面大于第三分光元件的横截面。
CNA2007102004967A 2007-04-20 2007-04-20 发光二极管照明装置 Pending CN101290092A (zh)

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US11/861,308 US7674009B2 (en) 2007-04-20 2007-09-26 LED lamp assembly

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CN101469844B (zh) * 2007-12-27 2011-11-09 富士迈半导体精密工业（上海）有限公司 照明装置
USD640212S1 (en) * 2010-06-28 2011-06-21 Advanced Optoelectric Technology, Inc. LED light bar
USD644189S1 (en) * 2010-06-28 2011-08-30 Advanced Optoelectronic Technology, Inc. LED light bar
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