WO2022143330A1 - 一种可调光灯具 - Google Patents

一种可调光灯具 Download PDF

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Publication number
WO2022143330A1
WO2022143330A1 PCT/CN2021/140418 CN2021140418W WO2022143330A1 WO 2022143330 A1 WO2022143330 A1 WO 2022143330A1 CN 2021140418 W CN2021140418 W CN 2021140418W WO 2022143330 A1 WO2022143330 A1 WO 2022143330A1
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WO
WIPO (PCT)
Prior art keywords
liquid crystal
light
module
dimmable
light source
Prior art date
Application number
PCT/CN2021/140418
Other languages
English (en)
French (fr)
Inventor
谯胜杰
Original Assignee
欧普照明股份有限公司
苏州欧普照明有限公司
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 CN202023299525.XU external-priority patent/CN214038022U/zh
Priority claimed from CN202011615788.9A external-priority patent/CN112682727A/zh
Application filed by 欧普照明股份有限公司, 苏州欧普照明有限公司 filed Critical 欧普照明股份有限公司
Publication of WO2022143330A1 publication Critical patent/WO2022143330A1/zh

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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
    • F21S8/00—Lighting devices intended for fixed installation
    • 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
    • F21V14/00—Controlling the distribution of the light emitted by adjustment of elements
    • 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
    • G02F1/1334—Constructional arrangements; Manufacturing methods based on polymer dispersed liquid crystals, e.g. microencapsulated liquid crystals
    • 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
    • G02F1/1343—Electrodes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
    • F21W2131/00—Use or application of lighting devices or systems not provided for in codes F21W2102/00-F21W2121/00
    • F21W2131/10—Outdoor lighting
    • F21W2131/105—Outdoor lighting of arenas or the like

Definitions

  • the present application relates to the field of lighting, in particular to a dimmable lamp.
  • the adjustable focus lamps and stage atmosphere lamps are used to achieve dynamic light distribution through the cooperation of optical elements.
  • the optical elements need to be moved by the driving device, and the Controlling the focal length of the lamps to present different lighting effects is not only complicated in the structure of the lamps, but also in the control process.
  • the purpose of the present application is to provide a dimmable lamp, through which the light source module and the liquid crystal dimming module cooperate with each other, so as to solve the problem that the light emitted by the light source in the prior art cannot be regulated and dynamic effects cannot be achieved.
  • the present application provides a dimmable lamp, comprising: a driving power module; a light source module having a light-emitting side, the light source module is used to emit collimated light; a liquid crystal dimming module , which is arranged on the light-emitting side of the light source module; the liquid crystal dimming module includes two transparent electrode layers, which are respectively electrically connected to the driving power module; the liquid crystal layer is arranged between the two transparent electrode layers. In between, the liquid crystal layer has polymer liquid crystal; the driving power module is used for supplying voltage to the liquid crystal layer, so as to deflect the polymer liquid crystal.
  • the transparent electrode layer includes a transparent film; and a layer of conductive material, which covers the side of the transparent film facing the liquid crystal layer.
  • the transparencies film is an ethylene-vinyl acetate copolymer film with a thickness of 0.5mm-0.7mm.
  • the liquid crystal layer includes a liquid crystal distribution spacer, the liquid crystal distribution spacer has a plurality of liquid crystal distribution slot holes spaced apart from each other, and the liquid crystal distribution spacer is arranged between the two transparent electrode layers, The polymer liquid crystal is filled in each liquid crystal distribution slot.
  • the light source module includes at least one light source; and at least one collimating lens, the collimating lens is disposed between the light source and the liquid crystal dimming module; wherein a plurality of the light sources Corresponding to one of the collimating lenses, each of the collimating lenses corresponds to a plurality of the liquid crystal distribution slots.
  • each of the light sources corresponds to one of the collimating lenses
  • each of the collimating lenses corresponds to one of the liquid crystal distribution slots.
  • the liquid crystal distribution spacers are elongated, and the liquid crystal distribution slot holes are equidistantly and linearly distributed on the liquid crystal distribution spacers.
  • the liquid crystal distribution spacer is rectangular, and the liquid crystal distribution slot holes are distributed on the liquid crystal distribution spacer in an array at equal distances from each other.
  • a plurality of electrode units are formed between the two transparent electrode layers, and each electrode unit is used for correspondingly driving one liquid crystal in the liquid crystal distribution slot.
  • the dimmable lamp further includes a control module, the control module can control the driving power module to apply the same or different voltages to all the electrode units at the same time, and the The control module can control the driving power module to apply the same or different voltages to the same electrode unit at different times.
  • the liquid crystal when no voltage is applied to the driving power module, the liquid crystal is not deflected, and the light is in a dark state with haze after passing through the liquid crystal dimming module; when the driving power module When a voltage is applied to the module, the liquid crystal is deflected, and the light is in a bright state after passing through the liquid crystal dimming module.
  • the divergence angle of the light in the dark state is greater than the divergence angle of the light in the bright state.
  • the transmittance of the liquid crystal dimming module to the light is proportional to the deflection angle of the liquid crystal after a voltage is applied.
  • the liquid crystal dimming module further includes two pieces of transparent glass arranged opposite to each other, the transparent electrode layer is arranged on the opposite sides of the two pieces of the transparent glass; and a frame, the transparent glass is installed on the two pieces of the transparent glass. in the above border.
  • the dimmable lamp further has a housing with a mounting slot; the light source, the collimating lens and the liquid crystal dimming module are sequentially stacked and mounted on the housing of the housing.
  • the installation slot In the installation slot; an outer frame is installed on the casing to fix the liquid crystal dimming module.
  • the dimmable lamp further includes a housing having a mounting slot; the light source, the collimating lens and the liquid crystal dimming module are sequentially stacked and mounted on the housing
  • the casing is in the shape of a long strip, and the installation groove is also a strip groove; an outer frame is installed on the casing to fix the liquid crystal dimming module.
  • a liquid crystal dimming module is added to the light-emitting side of the light source module, and when in use, the voltage on both sides of the polymer liquid crystal is changed to change the light emitted by the light source module.
  • a liquid crystal distribution spacer can be added to the liquid crystal dimming module, and the liquid crystal distribution slot in the liquid crystal distribution spacer divides the polymer liquid crystal into several units, each of which The unit corresponds to a light source module, and then realizes dynamic light distribution through electronic control, so that the liquid crystal of each unit can be deflected to different degrees in different areas of the same lamp, and the adjustment of different degrees of transparency of light can be achieved to achieve dream lighting. effect, the control process is simple.
  • FIG. 1 is an exploded view of a dimmable lamp according to Embodiment 1 of the application;
  • FIG. 2 is an exploded view of a liquid crystal dimming module in a dimmable lamp according to Embodiment 1 of the application;
  • FIG. 3 is a layered structure diagram of the transparent electrode layer of Embodiment 1 and Embodiment 2 of the present application;
  • FIG. 4 is an assembly diagram of a liquid crystal dimming module in a dimmable lamp according to Embodiment 1 of the application;
  • FIG. 5 is a working state diagram of a liquid crystal dimming module in a dimmable lamp according to Embodiment 1 of the application when it is not powered on;
  • FIG. 6 is a power-on working state diagram of a liquid crystal dimming module in a dimmable lamp according to Embodiment 1 of the application;
  • FIG. 7 is a state diagram of a dimmable lamp according to Embodiment 1 of the application after light is transmitted;
  • FIG. 8 is a state diagram of another dimmable lamp according to Embodiment 1 of the application after light is transmitted;
  • FIG. 9 is a rear view of a dimmable lamp according to Embodiment 1 of the application.
  • FIG. 10 is a right side view of a dimmable lamp according to Embodiment 1 of the application.
  • FIG. 11 is a structural diagram of a dimmable lamp according to Embodiment 2 of the application.
  • FIG. 12 is a state diagram of a dimmable lamp according to Embodiment 2 of the application after light is transmitted;
  • FIG. 13 is a state diagram of another dimmable lamp according to Embodiment 2 of the present application after light is transmitted.
  • connection part 31a, 31b light source circuit boards
  • a dimmable lamp 100a including a housing 1a, a bracket 2a, a light source module 3a, a liquid crystal dimming module 4, and an outer frame 5a.
  • the housing 1a has a driving power module (not shown) and a power access device (not shown), and the power supply can be arranged inside the housing 1a, or can be connected to an external power supply through the power access device.
  • the driving power module has a driving circuit for driving the liquid crystal dimming module 4, and its driving mode is described in detail below.
  • the casing 1a is in the shape of a box like a rectangular parallelepiped, and includes an installation slot 11a for installing the light source module 3a and the liquid crystal dimming module 4 .
  • FIG. 9 is a rear view of a dimmable lamp 100a of the application
  • FIG. 10 is a right side view of a dimmable lamp 100a of the application.
  • the bracket 2a has a main body 21 and two There are two connecting parts 22.
  • the two connecting parts 22 are arranged opposite to each other and are connected to the ends of the main body part 21 respectively.
  • the bracket 2a is rotatably connected with the casing 1a, so that the irradiation angle of the light can be adjusted during later use.
  • the light source module 3a includes a light source circuit board 31a, a plurality of light sources 32a and a plurality of collimating lenses 33a.
  • the light source circuit board 31a is mounted on the bottom of the mounting groove 11a of the casing 1a and is electrically connected to the power access device, and the light source 32a is mounted on the bottom of the light source circuit board 31a away from the bottom of the mounting groove 11a. one side. In this embodiment, the light sources 32a are distributed in an array.
  • the collimating lens 33a is disposed in the mounting slot 11a and on the light source circuit board 31a, each collimating lens 33a corresponds to a light source 32a, and each collimating lens 33a is used to connect the light source 32a.
  • the emitted light is converted into a collimated light, and is emitted toward the liquid crystal dimming module 4 .
  • the light source 32a can be selected from an LED lamp or a mini-LED lamp, and the color of the light source 32a can be selected according to actual needs.
  • the light sources 32a of the same color can also be installed, which can increase the fantastic stage effect.
  • the liquid crystal dimming module 4 includes two transparent electrode layers 41 , a liquid crystal layer 42 , two pieces of transparent glass 43 , and a frame 44 .
  • the liquid crystal layer 42 is disposed between the two transparent electrode layers 41 .
  • the transparent electrode layer is disposed between two transparent glasses 43 , and the frame 44 is used for carrying two layers of the transparent electrode layer 41 and the liquid crystal layer 42 .
  • the outer frame 5a is used to fix the two transparent electrode layers 41 and the liquid crystal layer 42 in the mounting groove 11a of the housing 1a in FIG. 1 .
  • the outer frame 5a and the housing 1a may be arranged in a snap-on connection, or may be bonded by glue.
  • the transparent electrode layer 41 includes a transparent film film 411 and a conductive material layer 412 .
  • the transparent film 411 is an ethylene-vinyl acetate copolymer film, with a thickness ranging from 0.5 mm to 0.7 mm, and a thinner thickness is easier for light to pass through.
  • the conductive material used in the conductive material layer can be nano-copper, nano-aluminum, nano-silver, etc., or a conductive graphene material, or an indium tin oxide material, etc., by sputtering or depositing the conductive material.
  • the surface of the transparent film 411 is then formed by etching to form several independent electrodes; or a conductive material is directly deposited on the surface of the transparent film 411 through a specific mask to form independent electrodes.
  • a conductive material is directly deposited on the surface of the transparent film 411 through a specific mask to form independent electrodes.
  • two opposite electrodes form an electrode unit, and the conductive material layer 412 faces the liquid crystal layer 42 .
  • the liquid crystal layer 42 includes liquid crystal distribution spacers 421 and polymer liquid crystals 422 .
  • the liquid crystal distribution spacer 421 has a plurality of liquid crystal distribution slot holes 4210.
  • the distribution mode of the liquid crystal distribution slot holes 4210 is the same as that of the collimating lens 33, so that during assembly, the liquid crystal distribution slot holes 4210 are distributed in the same way. 4210 can correspond to the collimating lens 33 . Therefore, in this embodiment, the liquid crystal distribution slot holes 4210 are also arranged in an array.
  • Each liquid crystal distribution slot 4210 is filled with the polymer liquid crystal 422.
  • Each electrode unit corresponds to one liquid crystal distribution slot 4210 , and each electrode unit independently drives the polymer liquid crystal 422 in its corresponding liquid crystal distribution slot 4210 .
  • the dimming principle of the dimmable lamp 100 a is analyzed below with reference to FIGS. 5 to 8 .
  • the driving circuit does not apply voltage to the polymer liquid crystal 422
  • the transmittance of the light is low
  • the light intensity is low
  • the collimated light passes through the corresponding polymer liquid crystal 422 and is flooded with a large angle
  • the emitted light has poor concentration and is in a dark state with haze.
  • the driving circuit applies a voltage to the polymer liquid crystal 422
  • the light transmittance is high.
  • the light intensity is high
  • the collimated light passes through the corresponding polymer liquid crystal 422 as a narrow-angle beam with high light intensity, and the concentration is high, and the emitted light is in a bright state.
  • the light source 32a emits light, and the light passes through the collimating lens 33a to form parallel collimated rays.
  • Each collimating lens 33a corresponds to a liquid crystal distribution slot 4210 on the liquid crystal dimming module
  • the liquid crystal distribution slot 4210 of the liquid crystal dimming module 4 emits, and by adjusting the transparency of the polymer liquid crystal 422 in the liquid crystal distribution slot 4210, the light intensity and angle of the parallel light after passing through each liquid crystal distribution slot 4210 can be adjusted. and the degree of fogging.
  • a dimmable lamp 100a has several liquid crystal distribution slots 4210, and the deflection angle of the polymer liquid crystal 422 in each of the liquid crystal distribution slots 4210 can be individually controlled. Therefore, if the light emitting surface of the dimmable lamp 100a is divided into several light emitting areas, for example, the area corresponding to one liquid crystal distribution slot 4210 is one light emitting area or the area corresponding to two liquid crystal distribution slots 4210 is one light emitting area , in the same light-emitting area, the light of the same light and dark state can be emitted. The light and dark states of light emitted between different light-emitting areas are set to be different. See Figure 7 and Figure 8. In FIG. 7 and FIG.
  • the light with stronger light is represented by "long circle”, and the light with darker light is represented by “short circle”.
  • Short circle means that the polymer liquid crystal 422 is not deflected or the deflection angle is small, and the emitted light is in a dark state with haze.
  • a "long circle” indicates that the polymer liquid crystal 422 is deflected or has a relatively large deflection angle, and the emitted light is in a bright state.
  • the light sources 32a are distributed in an array. Therefore, referring to FIG. 7 , during regulation, if the light emitting area in the center of the dimmable lamp 100a needs a narrow-angle beam with high light intensity, the light emitting area at the edge of the dimmable lamp 100a needs flood lighting with a large angle. Then it is necessary to increase the voltage of the electrode unit in the middle part through the driving circuit to increase the deflection angle of the polymer liquid crystal 422 in the middle part of the dimmable lamp 100a; at the same time, the electrode unit at the edge part of the dimmable lamp 100a can also be reduced.
  • the transmittance of the light in the light-emitting area in the middle of the dimmable lamp 100a can be increased , based on the light emitting area in the middle of the dimmable lamp 100a, the transmittance of each area decreases sequentially toward the periphery.
  • the light sources 32a are distributed in an array. Therefore, referring to FIG. 8 , during regulation, if the light emitting area in the center of the dimmable light fixture 100a needs flood lighting with a large angle, the edge of the dimmable light fixture 100a needs a narrow-angle beam with high light intensity.
  • the voltage of the electrode unit at the edge of the dimmable lamp 100a can be adjusted to increase the deflection angle of the polymer liquid crystal 422 at the edge of the dimmable lamp 100a.
  • the transmittance of the light in the area is lowered, and the transmittance of each area is sequentially increased toward the periphery based on the light-emitting area in the middle of the dimmable lamp 100a.
  • Different voltages are applied to different electrode units through the driving circuit, and different polymer liquid crystals 422 will exhibit different deflection angles, so that after the collimated light passes through the liquid crystal dimming module 4, it will be distributed in the corresponding liquid crystal.
  • the position of the slot hole 4210 presents light with different light intensities, angles and atomization degrees, so as to realize the dynamic light distribution of the spatial dimension.
  • the dimming command can be changed through the controller according to the actual scene requirements.
  • the liquid crystal dimming modules 4 at different positions have transmittance to light, so that the dimmable lamp 100a can realize a distributed combined light distribution.
  • the dimmable lamp 100a applies different voltages to the polymer liquid crystal 422 by driving the power module, which can form a dynamic lighting effect. Light is dynamic.
  • the transparency of the polymer liquid crystals 422 in different liquid crystal distribution slots 4210 is changed, and the light emitted by the light source is presented through the polymer liquid crystals 422 with different transparency.
  • Different lighting effects, dynamic light distribution is realized through electronic control, and the control process is simple.
  • a dimmable lamp 100b including a housing 1b, a bracket 2b, a light source module 3b, a liquid crystal dimming module 4, and an outer frame 5b.
  • the housing 1b has a driving power module (not shown) and a power access device (not shown).
  • the power supply can be arranged inside the housing 1b, or can be connected to an external power supply through the power access device.
  • the driving power module has a driving circuit for driving the liquid crystal dimming module 4 , and the driving method is described in detail below.
  • the projection of the housing 1b is elongated and includes an installation slot 11b for installing the light source module 3b and the liquid crystal dimming module 4 .
  • the casing 1b is in the shape of a rectangular parallelepiped box, and a rectangular parallelepiped channel steel can be selected.
  • the bracket 2b is a hanging rope, a hanging rod, etc., and the lower end of the hanging rope or the hanging rod is fixed on the casing 1b, and the dimmable light fixture 100b can pass through the hanging rope or the hanging rod. Suspended.
  • the light source module 3b includes a light source circuit board 31b, a plurality of light sources 32b and a plurality of collimating lenses 33b.
  • the light source circuit board 31b is mounted on the bottom of the mounting groove 11b of the housing 1b and is electrically connected to the power access device.
  • the light source 32b is mounted on the bottom of the light source circuit board 31b away from the bottom of the mounting groove 11b. one side. In this embodiment, the light sources 32b are distributed in a straight line.
  • the collimating lens 33b is disposed in the mounting slot 11b and on the light source circuit board 31b, each collimating lens 33b corresponds to a light source 32b, and each collimating lens 33b is used to connect the light source 32b.
  • the emitted light is converted into a collimated light, and is emitted toward the liquid crystal dimming module 4 .
  • the light source 32b can be selected from an LED lamp or a mini-LED lamp, and the color of the light source 32b can be selected according to actual needs.
  • the light sources 32b of the same color can also be installed, which can increase the fantastic stage effect.
  • the layered structure of the liquid crystal dimming module 4 is the same as that of the first embodiment, and the difference is only in its shape.
  • the liquid crystal dimming module 4 in this embodiment corresponds to the light source 32b, so , the liquid crystal dimming module 4 is elongated.
  • the layered structure of the liquid crystal dimming module 4 is shown in FIG. 2 and FIG. 3 of the first embodiment.
  • the dimming command can be changed by driving the power module according to the actual scene requirements.
  • the liquid crystal dimming modules 4 at different positions exhibit different transparency, so that the dimmable lamp 100b realizes a distributed combined light distribution.
  • the light with stronger light is indicated by a “long circle”, and the dark light is indicated by a “short circle”.
  • Short circle means that the polymer liquid crystal 422 is not deflected or the deflection angle is small, and the emitted light is in a dark state with haze.
  • a "long circle” indicates that the polymer liquid crystal 422 is deflected or has a relatively large deflection angle, and the emitted light is in a bright state.
  • the light sources 32 b are linearly distributed, that is, the light sources 32 b are arranged in a row. Therefore, referring to FIG. 12 , during regulation, if the light-emitting area in the center of the dimmable lamp 100b needs a narrow-angle beam with high light intensity, the light-emitting areas on both sides of the dimmable lamp 100b need flood lighting with a large angle . Then it is necessary to increase the voltage of the electrode unit in the middle part of the dimmable lamp 100b through the driving circuit to increase the deflection angle of the polymer liquid crystal 422 in the middle part of the dimmable lamp 100b; at the same time, the dimmable lamp 100b can also be reduced.
  • the voltage of the electrode units at the edges on both sides of the lamp 100b can reduce the deflection angle of the polymer liquid crystal 422 at the edges on both sides of the dimmable lamp 100b.
  • the transmittance of the light in the light emitting area of 100b is increased. Based on the light emitting area in the middle of the dimmable light fixture 100b, the transmittance of each area decreases sequentially toward the periphery.
  • the light sources 32b are distributed in a straight line. Therefore, referring to FIG. 13 , during regulation, if the light exit area in the center of the dimmable light fixture 100b needs flood lighting with a large angle, the side edges of the dimmable light fixture 100b need narrow-angle beams with high light intensity.
  • the voltage of the electrode unit in the middle part of the dimmable lamp 100b through the driving circuit so as to reduce the deflection angle of the polymer liquid crystal 422 in the middle part of the dimmable lamp 100b;
  • the voltages of the electrode units at the edges on both sides of the light fixture 100b can be adjusted to increase the deflection angle of the polymer liquid crystal 422 at the edges of the dimmable light fixture 100b.
  • the transmittance of the light in the light emitting area is lowered, and based on the light emitting area in the middle of the dimmable lamp 100b, the transmittance of each area increases sequentially toward the periphery.

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Abstract

一种可调光灯具（100a），可调光灯具（100a）包括：驱动电源模组；光源模组（3a），具有一发光侧，光源模组（3a）用于发出准直光线；液晶调光模组（4），设于光源模组（3a）的发光侧；液晶调光模组（4）包括两层透明电极层（41），分别电连接至驱动电源模组；液晶层（42），设于两层透明电极层（41）之间，液晶层（42）中具有聚合物液晶（422）；驱动电源模组用以对液晶层（42）提供电压，以使聚合物液晶（422）发生偏转。可以在同一个灯具的不同区域，使得各单元液晶发生不同程度的偏转，实现光线的不同程度透明度的调节，达到梦幻的灯光效果，控制过程简单。

Description

一种可调光灯具
本申请要求了申请日为2021年12月31日，申请号为202011615788.9和202023299525.X，发明名称为“一种可调光灯具”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及照明领域，特别涉及一种可调光灯具。
背景技术
目前，市面上使用的常规灯具，仅可在光色变换方面实现动态可调，而无法独立实现灯光强度、角度以及雾化程度的调节，因而无法独立实现动态配光。如果需要实现动态配光，则需要光学元件配合实现，而灯具在结合光学部件后整体结构会变得较为复杂。
例如，在舞台布置中，用到的可调焦灯具以及舞台氛围灯，皆是通过光学元件的配合实现动态配光，在动态配光过程中，需要通过驱动装置移动光学元件，通过光学元件以控制灯具的焦距来呈现不同的灯光效果，不但灯具的结构较为复杂，而且控制过程复杂。
发明内容
本申请的目的在于：提供一种可调光灯具，通过光源模组与液晶调光模组相互配合，以解决现有技术中光源射出的光线无法调控，不能实现动态效果的问题。
为了实现本上述目的，本申请提供了一种可调光灯具，包括：驱动电源模组；光源模组，具有一发光侧，所述光源模组用于发出准直光线；液晶调光模组，设于所述光源模组的发光侧；所述液晶调光模组包括两层透明电极层，分别电连接至所述驱动电源模组；液晶层，设于两层所述透明电极层之间，所述液晶层中具有聚合物液晶；所述驱动电源模组用以对所述液晶层提供电压，以使所述聚合物液晶发生偏转。
在一些实施例中，所述透明电极层包括透明胶片膜；以及导电材料层，覆于所述透明胶片膜朝向液晶层的一面。
在一些实施例中，所述透明胶片膜为乙烯-醋酸乙烯共聚物膜，其厚度为0.5mm-0.7mm。
在一些实施例中，所述液晶层包括液晶分布隔片，所述液晶分布隔片具有若干相互间隔的液晶分布槽孔，所述液晶分布隔片设于两层所述透明电极层之间，所述聚合物液晶填充于每一液晶分布槽孔中。
在一些实施例中，所述光源模组包括至少一光源；以及至少一准直透镜，所述准直透镜设于所述光源与所述液晶调光模组之间；其中，若干所述光源对应一所述准直透镜，每一所述准直透镜对应若干所述液晶分布槽孔。
在一些实施例中，每一所述光源对应一所述准直透镜，每一所述准直透镜对应一所述液晶分布槽孔。
在一些实施例中，所述液晶分布隔片为长条形，所述液晶分布槽孔相互等距地呈直线式 分布于所述液晶分布隔片上。
在一些实施例中，所述液晶分布隔片为长方形，所述液晶分布槽孔相互等距地呈阵列式分布于所述液晶分布隔片上。
在一些实施例中，两层所述透明电极层之间形成有若干电极单元，每一电极单元用以对应驱动一个所述液晶分布槽孔中的液晶。
在一些实施例中，所述可调光灯具还包括一控制模组，所述控制模组能够控制所述驱动电源模组同时向所有的所述电极单元施加相同或不同的电压，和所述控制模组能够控制所述驱动电源模组在不同时刻向同一所述电极单元施加相同或不同的电压。
在一些实施例中，当所述驱动电源模组未施加电压时，所述液晶不发生偏转，所述光线通过所述液晶调光模组后呈具有雾度的暗态；当所述驱动电源模组施加电压时，所述液晶发生偏转，所述光线通过所述液晶调光模组后呈亮态。
在一些实施例中，所述光线处于暗态时的发散角度大于所述光线处于所述亮态时的发散角度。
在一些实施例中，所述液晶调光模组对所述光线的透过率与施加电压后所述液晶的偏转角度成正比。
在一些实施例中，所述液晶调光模组还包括两块透明玻璃，相对设置，所述透明电极层设于两块所述透明玻璃相对的两面；以及边框，所述透明玻璃安装于所述边框中。
在一些实施例中，所述可调光灯具还一外壳，其具有一安装槽；所述光源、所述准直透镜以及所述液晶调光模组依次层叠式地安装于所述壳体的安装槽内；一外边框，安装于所述外壳上，用以固定所述液晶调光模组。
在一些实施例中，所述可调光灯具还包括一外壳，其具有一安装槽；所述光源、所述准直透镜以及所述液晶调光模组依次层叠式地安装于所述壳体的安装槽内；所述外壳为长条形，所述安装槽也为条形槽；一外边框，安装于所述外壳上，用以固定所述液晶调光模组。
本申请的技术效果是：本申请的可调光灯具，通过在光源模组的出光侧加入液晶调光模组，使用时，通过改变聚合物液晶两侧的电压，来改变光源模组发出的光在透过液晶调光模组后的透明度；同时，可以在液晶调光模组中加入液晶分布隔片，液晶分布隔片中的液晶分布槽孔将聚合物液晶分为若干单元，每一个单元与一个光源模组对应，再通过电控实现动态配光，这样可以在同一个灯具的不同区域，使得各单元液晶发生不同程度的偏转，实现光线的不同程度透明度的调节，达到梦幻的灯光效果，控制过程简单。
附图说明
为了更清楚地说明本申请实施例中的技术方案，下面将对实施例描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本申请的一些实施例，对于本领域技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1为本申请实施例1的一种可调光灯具的爆炸图；
图2为本申请实施例1的一种可调光灯具中液晶调光模组的爆炸图；
图3为本申请实施例1和实施例2的透明电极层的层状结构图；
图4为本申请实施例1的一种可调光灯具中液晶调光模组的装配图；
图5为本申请实施例1的一种可调光灯具中液晶调光模组未通电工作状态图；
图6为本申请实施例1的一种可调光灯具中液晶调光模组通电工作状态图；
图7为本申请实施例1的一种可调光灯具光线透出后的状态图；
图8为本申请实施例1的另一种可调光灯具光线透出后的状态图；
图9为本申请实施例1的一种可调光灯具的后视图；
图10为本申请实施例1的一种可调光灯具的右视图；
图11为本申请实施例2的一种可调光灯具结构图；
图12为本申请实施例2的一种可调光灯具光线透出后的状态图；
图13为本申请实施例2的另一种可调光灯具光线透出后的状态图。
附图标记：
100a、100b可调光灯具；                1a、1b外壳；
2a、2b支架；                          3a、3b光源模组；
4液晶调光模组；                       5a、5b外边框；
11a、11b安装槽；                      21主体部；
22连接部；                            31a、31b光源电路板；
32a、32b光源；                        33a、33b准直透镜；
41透明电极层；                        42液晶层；
43透明玻璃；                          44边框；
411透明胶片膜；                       412导电材料层；
421液晶分布隔片；                     422聚合物液晶；
4210液晶分布槽孔。
具体实施方式
下面详细描述本申请的实施方式，所述实施方式的示例在附图中示出，其中自始至终相同或类似的标号表示相同或类似的元件或具有相同或类似功能的元件。下面通过参考附图描述的实施方式是示例性的，仅用于解释本申请，而不能理解为对本申请的限制。
实施例1
如图1所示，在本实施例中，提供了一种可调光灯具100a，包括外壳1a、支架2a、光源模组3a、液晶调光模组4、外边框5a。
所述外壳1a内具有驱动电源模组(图未示)和电源接入装置(图未示)，电源可以设置在外壳1a的内部，也可以通过电源接入装置连接外部电源。本申请不作具体限定。所述驱动电源模组中具有驱动电路，用以驱动所述液晶调光模组4，其驱动方式在下文中具体阐 述。所述外壳1a呈类长方体的盒状形，其包括一个安装槽11a，用以安装光源模组3a、液晶调光模组4。
图9为本申请一种可调光灯具100a的后视图，图10为本申请一种可调光灯具100a的右视图，结合图9和图10，所述支架2a具有一主体部21和两个连接部22，两个连接部22相对设置且分别连接在所述主体部21的端部，两个所述连接部22分别可转动地连接在所述外壳1a侧面，这样设置可以实现所述支架2a与所述外壳1a转动连接，方便后期使用时，能够调节光线的照射角度。
所述光源模组3a包括光源电路板31a、若干光源32a和若干准直透镜33a。所述光源电路板31a安装于所述外壳1a的安装槽11a的槽底且与电源接入装置电连接，所述光源32a安装于所述光源电路板31a远离所述安装槽11a的槽底的一面。本实施例中，所述光源32a呈阵列分布。所述准直透镜33a设置在所述安装槽11a内且位于所述光源电路板31a上，每一个准直透镜33a均与一个光源32a对应，每一个准直透镜33a用以将所述光源32a发出的光线转变为准直光线，并朝向液晶调光模组4发出。本实施例中，所述光源32a可选择LED灯或者mini-LED灯，所述光源32a的颜色可以根据实际需要选择，可以在同一个可调光灯具100a中装配不同颜色的所述光源32a，也可以装配相同颜色的所述光源32a，这样可以增加梦幻的舞台效果。
如图2所示，所述液晶调光模组4包括两层透明电极层41、液晶层42、两块透明玻璃43、边框44。其中，所述液晶层42设置在两层所述透明电极层41之间。所述透明电极层设置在两块透明玻璃43之间，所述边框44用以装载两层所述透明电极层41、所述液晶层42。
在装配时，所述外边框5a用以将两层透明电极层41、所述液晶层42固定在图1中的所述外壳1a的安装槽11a中。所述外边框5a与所述外壳1a可以设置成卡接式的连接方式，也可以通过胶水粘接。
如图3所示，所述透明电极层41包括透明胶片膜411、导电材料层412。所述透明胶片膜411为乙烯-醋酸乙烯共聚膜，厚度的范围为0.5毫米至0.7毫米，厚度较薄光线容易透过。所述导电材料层所用的导电材料可以为纳米铜、纳米铝、纳米银等，也可以选择导电的石墨烯材料，也可以选择氧化铟锡材料等等，通过将导电材料溅射或者沉积在所述透明胶片膜411的表面，然后在通过蚀刻法形成若干独立的电极；或者通过特定的掩膜板直接将导电材料沉积在透明胶片膜411的表面，形成独立的电极。在两层透明电极层41中，两个相对设置的电极形成一个电极单元，所述导电材料层412朝向所述液晶层42。
参见图4、图5、图6所示，所述液晶层42包括液晶分布隔片421和聚合物液晶422。所述液晶分布隔片421中具有若干液晶分布槽孔4210，所述液晶分布槽孔4210的分布方式与所述准直透镜33的分布方式相同，以使在装配时，所述液晶分布槽孔4210能够与所述准直透镜33对应。因此，本实施例中，所述液晶分布槽孔4210也呈阵列排布。每一个液晶分 布槽孔4210中填充所述聚合物液晶422。每一个电极单元对应一个液晶分布槽孔4210，每一个电极单元独立地驱动其所对应的液晶分布槽孔4210中的所述聚合物液晶422。
以下结合图5至图8分析可调光灯具100a的调光原理。
如图5所示，图5为驱动电路未对所述聚合物液晶422施加电压时，光线通过准直透镜33a再透过所述液晶调光模组4后，其光线的透过率低，光强较低，其光线成散射状态，准直光线通过相应的所述聚合物液晶422呈角度大的泛光，射出的光线聚集性较差，其呈具有雾度的暗态。
如图6所示，图6为驱动电路对所述聚合物液晶422施加电压时，光线通过所述准直透镜33a再透过所述液晶调光模组4后，其光线的透过率高，光强较高，准直光线通过相应的所述聚合物液晶422呈高光强的窄角度光束，聚集性较高，射出的光线呈亮态。所述光源32a发出光线，光线通过所述准直透镜33a后形成平行的准直光线，每一准直透镜33a对应液晶调光模组4上的一液晶分布槽孔4210，平行光线通过所述液晶调光模组4的液晶分布槽孔4210射出，通过调节液晶分布槽孔4210内聚合物液晶422的透明度，能够调节平行光线通过每个液晶分布槽孔4210射出后的光线的光强、角度和雾化程度。
而本实施例中，一个可调光灯具100a中具有若干个液晶分布槽孔4210，且可以单独控制每一个所述液晶分布槽孔4210内的聚合物液晶422的偏转角度。因此，若将可调光灯具100a的出光面划分为若干出光区，例如，一个液晶分布槽孔4210所对应的区域为一个出光区或者两个液晶分布槽孔4210所对应的区域为一个出光区，在同一个出光区，可以让同一种明暗状态的光线射出。不同出光区之间射出的光线的明暗状态设置为不同。参见图7、图8所示。图7、图8中，光线从液晶调光模组4透过后，光线较强的用“长圈”表示，光线较暗的用“短圈”表示。“短圈”表示该处的所述聚合物液晶422未发生偏转或者偏转角度较小，射出的光线呈具有雾度的暗态。“长圈”表示该处的所述聚合物液晶422发生偏转或者偏转角度较大，射出的光线呈亮态。
如图1所示，本实施例中，所述光源32a呈阵列式分布。因此，参见图7可知，调控时，如果所述可调光灯具100a中心的出光区需要高光强的窄角度光束，所述可调光灯具100a的边缘的出光区需要角度大的泛光照明。那么需要通过驱动电路增加中间部位的电极单元的电压，以增加所述可调光灯具100a中间部位的聚合物液晶422的偏转角度；同时还可以降低所述可调光灯具100a边缘部位的电极单元的电压，以减小所述可调光灯具100a边缘位置的聚合物液晶422的偏转角度，换句话说，即可以在所述可调光灯具100a中间的出光区的光线的透过率调高，以所述可调光灯具100a中间的出光区为基础，各个区域的透过率向周边依次递减。
如图1所示，本实施例中，所述光源32a呈阵列式分布。因此，参见图8可知，调控时，如果所述可调光灯具100a中心的出光区需要角度大的泛光照明，所述可调光灯具100a的边缘需要高光强的窄角度光束。那么需要通过驱动电路降低所述可调光灯具100a中间部位的 电极单元的电压，以减小所述可调光灯具100a中间部位的聚合物液晶422的偏转角度；同时还可以增加低所述可调光灯具100a边缘部位的电极单元的电压，以调高所述可调光灯具100a边缘位置的聚合物液晶422的偏转角度，换句话说，即可以在所述可调光灯具100a中间的出光区的光线的透过率调低，以所述可调光灯具100a中间的出光区为基础，各个区域的透过率向周边依次递增。
通过驱动电路对不同的电极单元施加不同的电压，不同的所述聚合物液晶422会呈现不同的偏转角度，从而准直光线通过所述液晶调光模组4后，会在对应所述液晶分布槽孔4210位置呈现不同光强、角度和雾化程度的光，实现空间维度的动态配光。通过不断调整不同电极单元的电压，则能够呈现变化的灯光效果，实现时间维度的动态配光。
可以根据实际的场景需求通过控制器变换调光指令。不同位置的液晶调光模组4对光线具有透过率，使所述可调光灯具100a实现一种分布式的组合配光。所述可调光灯具100a通过驱动电源模组对聚合物液晶422施加不同的电压，可以形成一种动态的照明效果，不同于以往的静态配光，现在通过电控调光，让灯具的配光实现动态化。
本申请通过改变不同液晶分布槽孔4210内聚合物液晶422两侧的电压，从而改变不同液晶分布槽孔4210内的聚合物液晶422的透明度，光源射出的光线通过不同透明度的聚合物液晶422呈现不同的灯光效果，通过电控实现动态配光，控制过程简单。
实施例2
如图11所示，在本实施例中，提供了一种可调光灯具100b，包括外壳1b、支架2b、光源模组3b、液晶调光模组4、外边框5b。
所述外壳1b内具有驱动电源模组(图未示)和电源接入装置(图未示)，电源可以设置在外壳1b的内部，也可以通过电源接入装置连接外部电源。本申请不作具体限定。所述驱动电源模组中具有驱动电路，用以驱动所述液晶调光模组4，其驱动方式在下文中具体阐述。所述外壳1b的投影呈长条形且包括一个安装槽11b，用以安装光源模组3b、液晶调光模组4。本实施例中，所述外壳1b为一长方体的盒状形，可选用长方体的槽钢。
本实施例中，所述支架2b为吊绳、吊杆等，所述吊绳或所述吊杆的下端固定在所述外壳1b上，所述可调光灯具100b可通过吊绳或吊杆呈悬吊状态。
所述光源模组3b包括光源电路板31b、若干光源32b和若干准直透镜33b。所述光源电路板31b安装于所述外壳1b的安装槽11b的槽底且与电源接入装置电连接，所述光源32b安装于所述光源电路板31b远离所述安装槽11b的槽底的一面。本实施例中，所述光源32b呈直线分布。所述准直透镜33b设置在所述安装槽11b内且位于所述光源电路板31b上，每一个准直透镜33b均与一个光源32b对应，每一个准直透镜33b用以将所述光源32b发出的光线转变为准直光线，并朝向液晶调光模组4发出。本实施例中，所述光源32b可选择LED灯或者mini-LED灯，所述光源32b的颜色可以根据实际需要选择，可以在同一个可调光灯具100b中装配不同颜色的所述光源32b，也可以装配相同颜色的所述光源32b，这样可以增 加梦幻的舞台效果。
本实施例中，所述液晶调光模组4的层状结构与实施例1相同，区别仅在于其形状不同，本实施例中的液晶调光模组4与所述光源32b相对应，因此，所述液晶调光模组4为长条形。所述液晶调光模组4的层状结构参见实施例1的图2、图3所示。
可以根据实际的场景需求通过驱动电源模组变换调光指令。不同位置的液晶调光模组4呈现不同透明度，使可调光灯具100b实现一种分布式的组合配光。
如图12、图13所示，光线从所述液晶调光模组4透过后，光线较强的用“长圈”表示，光线较暗的用“短圈”表示。“短圈”表示该处的所述聚合物液晶422未发生偏转或者偏转角度较小，射出的光线呈具有雾度的暗态。“长圈”表示该处的所述聚合物液晶422发生偏转或者偏转角度较大，射出的光线呈亮态。
如图11所示，本实施例中，所述光源32b呈直线式分布，即所述光源32b排列成一排。因此，参见图12可知，调控时，如果所述可调光灯具100b中心的出光区需要高光强的窄角度光束，所述可调光灯具100b的两侧边缘的出光区需要角度大的泛光照明。那么需要通过驱动电路增加所述可调光灯具100b中间部位的电极单元的电压，以增加所述可调光灯具100b中间部位的聚合物液晶422的偏转角度；同时还可以降低所述可调光灯具100b两侧边缘部位的电极单元的电压，以减小所述可调光灯具100b两侧边缘位置的聚合物液晶422的偏转角度，换句话说，即可以在所述可调光灯具100b中间的出光区的光线的透过率调高，以所述可调光灯具100b中间的出光区为基础，各个区域的透过率向周边依次递减。
如图11所示，本实施例中，所述光源32b呈直线式分布。因此，参见图13可知，调控时，如果所述可调光灯具100b中心的出光区需要角度大的泛光照明，所述可调光灯具100b的两侧边缘需要高光强的窄角度光束。那么需要通过驱动电路降低所述可调光灯具100b中间部位的电极单元的电压，以减小所述可调光灯具100b中间部位的聚合物液晶422的偏转角度；同时还可以增加所述可调光灯具100b两侧边缘部位的电极单元的电压，以调高所述可调光灯具100b边缘位置的聚合物液晶422的偏转角度，换句话说，即可以在所述可调光灯具100b中间的出光区的光线的透过率调低，以所述可调光灯具100b中间的出光区为基础，各个区域的透过率向周边依次递增。
本申请已由上述相关实施例加以描述，然而上述实施例仅为实施本申请的范例。必需指出的是，已公开的实施例并未限制本申请的范围。相反地，包含于权利要求书的精神及范围的修改及均等设置均包括于本申请的范围内。

Claims (15)

  1. 一种可调光灯具，其中，包括：
    驱动电源模组；
    光源模组，具有一发光侧，所述光源模组用于发出准直光线；
    液晶调光模组，设于所述光源模组的发光侧；
    所述液晶调光模组包括
    两层透明电极层，分别电连接至所述驱动电源模组；
    液晶层，设于两层所述透明电极层之间，所述液晶层中具有聚合物液晶；
    所述驱动电源模组用以对所述液晶层提供电压，以使所述聚合物液晶发生偏转。
  2. 根据权利要求1所述的可调光灯具，其中，所述透明电极层包括：
    透明胶片膜；以及
    导电材料层，覆于所述透明胶片膜朝向液晶层的一面。
  3. 根据权利要求2所述的可调光灯具，其中，所述透明胶片膜为乙烯-醋酸乙烯共聚物膜，其厚度为0.5mm-0.7mm。
  4. 根据权利要求1所述的可调光灯具，其中，所述液晶层包括液晶分布隔片，所述液晶分布隔片具有若干相互间隔的液晶分布槽孔，所述液晶分布隔片设于两层所述透明电极层之间，所述聚合物液晶填充于每一液晶分布槽孔中。
  5. 根据权利要求4所述的可调光灯具，其中，所述光源模组包括：
    至少一光源；以及
    至少一准直透镜，所述准直透镜设于所述光源与所述液晶调光模组之间；
    其中，若干所述光源对应一所述准直透镜，每一所述准直透镜对应若干所述液晶分布槽孔。
  6. 根据权利要求5所述的可调光灯具，其中，每一所述光源对应一所述准直透镜，每一所述准直透镜对应一所述液晶分布槽孔。
  7. 根据权利要求4所述的可调光灯具，其中，所述液晶分布隔片为长条形，所述液晶分布槽孔相互等距地呈直线式分布于所述液晶分布隔片上。
  8. 根据权利要求4所述的可调光灯具，其中，所述液晶分布隔片为长方形，所述液晶分布槽孔相互等距地呈阵列式分布于所述液晶分布隔片上。
  9. 根据权利要求4所述的可调光灯具，其中，两层所述透明电极层之间形成有若干电极单元，每一电极单元用以对应驱动一个所述液晶分布槽孔中的液晶。
  10. 根据权利要求9所述的可调光灯具，其中，还包括
    一控制模组，所述控制模组能够控制所述驱动电源模组同时向所有的所述电极单元施加相同或不同的电压，和所述控制模组能够控制所述驱动电源模组在不同时刻向同一所述电极 单元施加相同或不同的电压。
  11. 根据权利要求1所述的可调光灯具，其中，
    当所述驱动电源模组未施加电压时，所述液晶不发生偏转，所述光线通过所述液晶调光模组后呈具有雾度的暗态；
    当所述驱动电源模组施加电压时，所述液晶发生偏转，所述光线通过所述液晶调光模组后呈亮态，其中，所述光线处于暗态时的发散角度大于所述光线处于所述亮态时的发散角度。
  12. 根据权利要求1所述的可调光灯具，其中，所述液晶调光模组对所述光线的透过率与施加电压后所述液晶的偏转角度成正比。
  13. 根据权利要求1所述的可调光灯具，其中，所述液晶调光模组还包括
    两块透明玻璃，相对设置，所述透明电极层设于两块所述透明玻璃相对的两面；以及
    调光板边框，所述透明玻璃安装于所述边框中。
  14. 根据权利要求1所述的可调光灯具，其中，还包括
    一外壳，其具有一安装槽；所述光源、所述准直透镜以及所述液晶调光模组依次层叠式地安装于所述壳体的安装槽内；
    一外边框，安装于所述外壳上，用以固定所述液晶调光模组。
  15. 根据权利要求1所述的可调光灯具，其中，还包括
    一外壳，其具有一安装槽；所述光源、所述准直透镜以及所述液晶调光模组依次层叠式地安装于所述壳体的安装槽内；所述外壳为长条形，所述安装槽也为条形槽；
    一外边框，安装于所述外壳上，用以固定所述液晶调光模组。
PCT/CN2021/140418 2020-12-31 2021-12-22 一种可调光灯具 WO2022143330A1 (zh)

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