CN111380023A - 具有背光源的导光板式吸顶灯 - Google Patents

具有背光源的导光板式吸顶灯 Download PDF

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CN111380023A
CN111380023A CN202010037402.4A CN202010037402A CN111380023A CN 111380023 A CN111380023 A CN 111380023A CN 202010037402 A CN202010037402 A CN 202010037402A CN 111380023 A CN111380023 A CN 111380023A
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light
ring
backlight source
ceiling
guide plate
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欧阳昆泉
刘应句
欧阳宁锋
苏培尧
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ZheJiang Klite Lighting Holdings Co Ltd
Zhejiang kaiyao Lighting Co Ltd
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Zhejiang kaiyao Lighting Co Ltd
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S10/00—Lighting devices or systems producing a varying lighting effect
    • F21S10/02—Lighting devices or systems producing a varying lighting effect changing colors
    • F21S10/023—Lighting devices or systems producing a varying lighting effect changing colors by selectively switching fixed light sources
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S8/00—Lighting devices intended for fixed installation
    • F21S8/04—Lighting devices intended for fixed installation intended only for mounting on a ceiling or the like overhead structures
    • 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
    • F21V17/00—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages
    • F21V17/10—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages characterised by specific fastening means or way of fastening
    • F21V17/16—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages characterised by specific fastening means or way of fastening by deformation of parts; Snap action mounting
    • F21V17/164—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages characterised by specific fastening means or way of fastening by deformation of parts; Snap action mounting the parts being subjected to bending, e.g. snap joints
    • 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
    • F21V19/00—Fastening of light sources or lamp holders
    • F21V19/001—Fastening of light sources or lamp holders the light sources being semiconductors devices, e.g. LEDs
    • 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
    • F21V23/003—Arrangement of electric circuit elements in or on lighting devices the elements being electronics drivers or controllers for operating the light source, e.g. for a LED array
    • 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
    • F21V23/06—Arrangement of electric circuit elements in or on lighting devices the elements being coupling devices, e.g. connectors
    • 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
    • F21V5/00—Refractors for light sources
    • F21V5/08—Refractors for light sources producing an asymmetric light distribution
    • 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
    • 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
    • G02B6/0051—Diffusing 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
    • G02B6/005—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
    • G02B6/0081—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
    • 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
    • G02B6/0086—Positioning aspects
    • G02B6/0088—Positioning aspects of the light guide or other optical sheets in the package
    • 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
    • G02B6/0086—Positioning aspects
    • G02B6/009—Positioning aspects of the light source in the package
    • 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
    • F21V2200/00—Use of light guides, e.g. fibre optic devices, in lighting devices or systems
    • F21V2200/10—Use of light guides, e.g. fibre optic devices, in lighting devices or systems of light guides of the optical fibres type
    • 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
    • F21Y2103/30—Elongate light sources, e.g. fluorescent tubes curved
    • F21Y2103/33—Elongate light sources, e.g. fluorescent tubes curved annular
    • 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
    • F21Y2113/00—Combination of light sources
    • F21Y2113/10—Combination of light sources of different colours
    • F21Y2113/13—Combination of light sources of different colours comprising an assembly of point-like light sources
    • 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]

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Abstract

本发明涉及一种具有背光源的导光板式吸顶灯，包括：下端设有容置孔的吸顶盘，装于容置孔中的耦合连接端子和驱动器，上端设有凸环的基盘，设于基盘下端的沉孔，两端分别与沉孔和凸环的内孔一一对应连通的中孔，设于凸环外侧围的背光源，罩在背光源外且与基盘可拆卸连接的透光圈，与沉孔上端连接的反光纸，设于沉孔侧围的主光源，依次位于主光源下侧且分别与沉孔侧围连接的导光板和扩散板，罩住扩散板且与基盘可拆卸连接的透光罩；吸顶盘位于凸环的内孔中且与基盘可拆卸连接。所述的具有背光源的导光板式吸顶灯，具有背光源利于制造情景营造温馨氛围，装拆维修方便，出光柔和均匀，吸顶灯体型较薄。

Description

具有背光源的导光板式吸顶灯
技术领域
本发明涉及LED灯具技术领域，尤其是一种具有背光源的导光板式吸顶灯。
背景技术
中国专利申请号：201910969562.X的发明公开了一种吸顶灯，包括底盘、边框组件以及装配组件；底盘具有用于与天花板贴合的贴合面，边框组件通过装配组件与底盘沿竖直方向可拆卸连接。传统的吸顶灯存在没有背光源不利于制造情景营造温馨氛围，装拆维修不够方便，出光刺眼且不够均匀，吸顶灯体型较厚的不足；因此，设计一种具有背光源利于制造情景营造温馨氛围，装拆维修方便，出光柔和均匀，吸顶灯体型较薄的具有背光源的导光板式吸顶灯，成为亟待解决的问题。
发明内容
本发明的目的是为了克服目前的吸顶灯存在没有背光源不利于制造情景营造温馨氛围，装拆维修不够方便，出光刺眼且不够均匀，吸顶灯体型较厚的不足，提供一种具有背光源利于制造情景营造温馨氛围，装拆维修方便，出光柔和均匀，吸顶灯体型较薄的具有背光源的导光板式吸顶灯。
本发明的具体技术方案是：
一种具有背光源的导光板式吸顶灯，包括：下端设有容置孔的吸顶盘，装于容置孔中的耦合连接端子和驱动器，上端设有凸环的基盘，设于基盘下端的沉孔，两端分别与沉孔和凸环的内孔一一对应连通的中孔，设于凸环外侧围的背光源，罩在背光源外且与基盘可拆卸连接的透光圈，与沉孔上端连接的反光纸，设于沉孔侧围的主光源，依次位于主光源下侧且分别与沉孔侧围连接的导光板和扩散板，罩住扩散板且与基盘可拆卸连接的透光罩；吸顶盘位于凸环的内孔中且与基盘可拆卸连接。
作为优选，所述的背光源为与凸环5外侧围粘接的环形RGB光源；环形RGB光源的LED灯珠位于环形RGB光源的外侧围，环形RGB光源的LED灯珠包括沿环形RGB光源周向间隔均布的多个红色LED灯珠、多个绿色LED灯珠、多个蓝色LED灯珠。
作为优选，所述的主光源为与沉孔侧围连接的LED环形灯圈，LED环形灯圈的LED灯珠位于LED环形灯圈内侧围，且沿主光LED环形灯圈周向分布。
作为优选，所述的透光罩与基盘同轴；基盘外侧围设有若干个沿轴线分布的外螺旋凸条，透光罩侧围内侧设有若干个沿轴线分布且与外螺旋凸条一一对应的内螺旋凸条；透光罩的底板设有与侧围下端连接的支承圈；透光罩与基盘连接时，内螺旋凸条向上运动穿过相邻两个外螺旋凸条相对端之间的间隙，顺时针转动透光罩，支承圈上端压住基盘下端，内螺旋凸条的下端压住上端外螺旋凸条；外螺旋凸条的螺旋方向、内螺旋凸条的螺旋方向均为右旋。
作为优选，所述的透光圈内侧围下端和上端分别设有若干个沿周向分布的卡脚；基盘的上端和凸环的上端分别设有若干个沿周向分布且横截面形状为L形的卡槽；卡脚与卡槽一一对应扣合。
作为优选，所述的容置孔的顶面设有若干个沿容置孔侧围周向分布的卡钩，基盘上端设有若干个沿凸环的内孔侧围周向分布且与卡钩一一对应的卡块；卡块设有切向卡孔；吸顶盘与基盘连接时，凸环的内孔套在吸顶盘下端外，顺时针转动基盘，卡钩的钩头一一对应插入切向卡孔中。
作为优选，所述的吸顶盘上端设有若干个凸圈。
与现有技术相比，本发明的有益效果是：所述的具有背光源的导光板式吸顶灯，具有背光源利于制造情景营造温馨氛围；吸顶盘装在房间顶上；吸顶盘与基盘连接时，凸环的内孔套在吸顶盘下端外，顺时针转动基盘，卡钩的钩头一一对应插入切向卡孔中；透光罩与基盘连接时，内螺旋凸条向上运动穿过相邻两个外螺旋凸条相对端之间的间隙，支承圈上端压住基盘下端，内螺旋凸条的下端压住上端外螺旋凸条；透光圈与基盘通过卡脚与卡槽扣合连接，装拆维修方便；反光纸对主光源LED灯珠的光进行反射，导光板把侧边光源转换成面光源，扩散板打散光源，使光源均匀分布在透光罩表面，出光柔和均匀；耦合连接端子和驱动器装于吸顶盘的容置孔中，吸顶盘位于凸环的内孔中，吸顶灯体型较薄；耦合连接端子方便连接驱动器和外部市电接线；中孔方便通线。背光源为与凸环外侧围连接的环形RGB光源，RGB是红绿蓝三种颜色,三种颜色也叫三基色,根据不同比例可以混合出所有光的颜色，利于背光源制造情景营造温馨氛围效果更好。吸顶盘上端设有若干个凸圈利于吸顶盘装在房间顶上时更稳固。
附图说明
图1是本发明的一种爆炸结构示意图。
图中：容置孔1，耦合连接端子2，驱动器3，吸顶盘4，凸环5，基盘6，中孔7，透光圈8，反光纸9，导光板10，扩散板11，透光罩12，环形RGB光源13，环形RGB光源的LED灯珠14，LED环形灯圈15，LED环形灯圈的LED灯珠16，外螺旋凸条17，内螺旋凸条18，支承圈19，卡脚20，卡槽21，卡钩22，卡块23，切向卡孔24，凸圈25。
具体实施方式
下面结合附图所示对本发明进行进一步描述。
如附图1所示：一种具有背光源的导光板式吸顶灯，包括：下端设有容置孔1的吸顶盘4，装于容置孔1中的耦合连接端子2和驱动器3，上端设有凸环5的基盘6，设于基盘6下端的沉孔（未图示），两端分别与沉孔和凸环5的内孔一一对应连通的中孔7，设于凸环5外侧围的背光源，罩在背光源外且与基盘6可拆卸连接的透光圈8，与沉孔上端粘接的反光纸9，设于沉孔侧围的主光源，依次位于主光源下侧且分别与沉孔侧围粘接的导光板10和扩散板11，罩住扩散板11且与基盘6可拆卸连接的透光罩12；吸顶盘4位于凸环5的内孔中且与基盘6可拆卸连接。透光圈8的形状为小端位于上端的锥台形。
所述的背光源为与凸环5外侧围粘接的环形RGB光源13；环形RGB光源的LED灯珠14位于环形RGB光源13的外侧围，环形RGB光源的LED灯珠14包括沿环形RGB光源13周向间隔均布的多个红色LED灯珠、多个绿色LED灯珠、多个蓝色LED灯珠。
所述的主光源为与沉孔侧围粘接的LED环形灯圈15，LED环形灯圈的LED灯珠16位于LED环形灯圈15内侧围，且沿主光LED环形灯圈15周向均布。
本实施例中：
所述的透光罩12与基盘6同轴；基盘6外侧围设有四干个沿轴线均布的外螺旋凸条17，透光罩12侧围内侧设有四干个沿轴线分布且与外螺旋凸条17一一对应的内螺旋凸条18；透光罩12的底板设有与侧围下端一体构成连接的支承圈19；透光罩12与基盘6连接时，内螺旋凸条18向上运动穿过相邻两个外螺旋凸条17相对端之间的间隙，顺时针转动透光罩12，支承圈19上端压住基盘6下端，内螺旋凸条18的下端压住上端外螺旋凸条17；外螺旋凸条17的螺旋方向、内螺旋凸条18的螺旋方向均为右旋。
所述的透光圈8内侧围下端和上端分别设有四个沿周向分布的卡脚20；基盘6的上端和凸环5的上端分别设有四个沿周向分布且横截面形状为L形的卡槽21；卡脚20与卡槽21一一对应扣合。
所述的容置孔1的顶面设有三个沿容置孔1侧围周向均布的卡钩22，基盘6上端设有三个沿凸环5的内孔侧围周向均布且与卡钩22一一对应的卡块23；卡块23设有切向卡孔24；吸顶盘4与基盘6连接时，凸环5的内孔套在吸顶盘4下端外，顺时针转动基盘6，卡钩22的钩头一一对应插入切向卡孔24中。
所述的吸顶盘4上端设有六个沿吸顶盘4周向均布的凸圈25。
所述的具有背光源的导光板式吸顶灯使用时，具有背光源利于制造情景营造温馨氛围；吸顶盘装在房间顶上；吸顶盘与基盘连接时，凸环的内孔套在吸顶盘下端外，顺时针转动基盘，卡钩的钩头一一对应插入切向卡孔中；透光罩与基盘连接时，内螺旋凸条向上运动穿过相邻两个外螺旋凸条相对端之间的间隙，支承圈上端压住基盘下端，内螺旋凸条的下端压住上端外螺旋凸条；透光圈与基盘通过卡脚与卡槽扣合连接，装拆维修方便；反光纸对主光源LED灯珠的光进行反射，导光板把侧边光源转换成面光源，扩散板打散光源，使光源均匀分布在透光罩表面，出光柔和均匀；耦合连接端子和驱动器装于吸顶盘的容置孔中，吸顶盘位于凸环的内孔中，吸顶灯体型较薄；耦合连接端子方便连接驱动器和外部市电接线；中孔方便通线。背光源为与凸环外侧围连接的环形RGB光源，RGB是红绿蓝三种颜色,三种颜色也叫三基色,根据不同比例可以混合出所有光的颜色，利于背光源制造情景营造温馨氛围效果更好。吸顶盘上端设有若干个凸圈利于吸顶盘装在房间顶上时更稳固。
除上述实施例外，在本发明的权利要求书及说明书所公开的范围内，本发明的技术特征或技术数据可以进行重新选择及组合，从而构成新的实施例，这些都是本领域技术人员无需进行创造性劳动即可实现的，因此这些本发明没有详细描述的实施例也应视为本发明的具体实施例而在本发明的保护范围之内。

Claims (7)

1.一种具有背光源的导光板式吸顶灯，包括：下端设有容置孔的吸顶盘，装于容置孔中的耦合连接端子和驱动器，其特征是，所述的具有背光源的导光板式吸顶灯还包括：上端设有凸环的基盘，设于基盘下端的沉孔，两端分别与沉孔和凸环的内孔一一对应连通的中孔，设于凸环外侧围的背光源，罩在背光源外且与基盘可拆卸连接的透光圈，与沉孔上端连接的反光纸，设于沉孔侧围的主光源，依次位于主光源下侧且分别与沉孔侧围连接的导光板和扩散板，罩住扩散板且与基盘可拆卸连接的透光罩；吸顶盘位于凸环的内孔中且与基盘可拆卸连接。
2.根据权利要求1所述的具有背光源的导光板式吸顶灯，其特征是：所述的背光源为与凸环5外侧围粘接的环形RGB光源；环形RGB光源的LED灯珠位于环形RGB光源的外侧围，环形RGB光源的LED灯珠包括沿环形RGB光源周向间隔均布的多个红色LED灯珠、多个绿色LED灯珠、多个蓝色LED灯珠。
3.根据权利要求1所述的具有背光源的导光板式吸顶灯，其特征是：所述的主光源为与沉孔侧围连接的LED环形灯圈，LED环形灯圈的LED灯珠位于LED环形灯圈内侧围，且沿主光LED环形灯圈周向分布。
4.根据权利要求1或2或3所述的具有背光源的导光板式吸顶灯，其特征是：所述的透光罩与基盘同轴；基盘外侧围设有若干个沿轴线分布的外螺旋凸条，透光罩侧围内侧设有若干个沿轴线分布且与外螺旋凸条一一对应的内螺旋凸条；透光罩的底板设有与侧围下端连接的支承圈；透光罩与基盘连接时，内螺旋凸条向上运动穿过相邻两个外螺旋凸条相对端之间的间隙，顺时针转动透光罩，支承圈上端压住基盘下端，内螺旋凸条的下端压住上端外螺旋凸条。
5.根据权利要求1或2或3所述的具有背光源的导光板式吸顶灯，其特征是：所述的透光圈内侧围下端和上端分别设有若干个沿周向分布的卡脚；基盘的上端和凸环的上端分别设有若干个沿周向分布且横截面形状为L形的卡槽；卡脚与卡槽一一对应扣合。
6.根据权利要求1或2或3所述的具有背光源的导光板式吸顶灯，其特征是：所述的容置孔的顶面设有若干个沿容置孔侧围周向分布的卡钩，基盘上端设有若干个沿凸环的内孔侧围周向分布且与卡钩一一对应的卡块；卡块设有切向卡孔；吸顶盘与基盘连接时，凸环的内孔套在吸顶盘下端外，顺时针转动基盘，卡钩的钩头一一对应插入切向卡孔中。
7.根据权利要求1或2或3所述的具有背光源的导光板式吸顶灯，其特征是：所述的吸顶盘上端设有若干个凸圈。
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