WO2022121983A1 - 筒灯 - Google Patents

筒灯 Download PDF

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Publication number
WO2022121983A1
WO2022121983A1 PCT/CN2021/136783 CN2021136783W WO2022121983A1 WO 2022121983 A1 WO2022121983 A1 WO 2022121983A1 CN 2021136783 W CN2021136783 W CN 2021136783W WO 2022121983 A1 WO2022121983 A1 WO 2022121983A1
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WIPO (PCT)
Prior art keywords
light
optical mask
source assembly
light source
downlight
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PCT/CN2021/136783
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English (en)
French (fr)
Inventor
卜晨曦
Original Assignee
苏州欧普照明有限公司
欧普照明股份有限公司
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Publication of WO2022121983A1 publication Critical patent/WO2022121983A1/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
    • F21S8/02—Lighting devices intended for fixed installation of recess-mounted type, e.g. downlighters
    • 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
    • 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
    • F21V3/00—Globes; Bowls; Cover glasses
    • F21V3/04—Globes; Bowls; Cover glasses characterised by materials, surface treatments or coatings
    • F21V3/06—Globes; Bowls; Cover glasses characterised by materials, surface treatments or coatings characterised by the material
    • 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
    • F21V7/04—Optical design
    • 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]

Definitions

  • the present application relates to the field of lamps, in particular to a downlight.
  • the traditional way is to use a diffuser plate to mix light.
  • the advantage of this method is that the light mixing is relatively uniform, but due to the low transmittance of the diffuser, some light is reflected back to the optical cavity, and then reflected through the optical cavity and then exits through the diffusing mask, and the light will be lost during the back and forth reflection process. More energy, resulting in the optical efficiency of the downlight is only about 75%, it is difficult to meet the new energy efficiency standards.
  • the invention provides a downlight, comprising: a light source assembly and an optical mask;
  • the optical mask is arranged on one side of the light source assembly, the optical mask is made of transparent material, and has a light entrance surface and a light exit surface located at opposite axial ends of the optical mask, and the light source assembly The emitted light enters the optical mask from the light incident surface, and passes through the optical mask from the light exit surface;
  • the light-emitting surface of the optical mask is inclined toward the light-incident surface during the process of extending toward the edge of the optical mask near the edge of the optical mask, so that the light emitted by the light source assembly passes through the edge of the optical mask.
  • the beam angle is reduced.
  • the beam angle is 70°-90°.
  • the light incident surface and the light exit surface are curved surfaces.
  • the middle area of the light-emitting surface is concave toward the light-incident surface to form an inner concave surface.
  • the downlight also includes a secondary reflector, the secondary reflector has a light inlet and a light outlet arranged oppositely, the light inlet is connected to the light outlet surface of the optical mask, and the two The inner wall of the stage reflector has a mirror surface.
  • the secondary reflector has a cylindrical structure, and the inner diameter of the secondary reflector gradually increases in a direction extending from the light inlet to the light outlet.
  • the light source assembly includes a mounting portion and a light-emitting portion, the light-emitting portion is provided in the mounting portion, the mounting portion has an opening, and the optical mask is provided at the opening, so that the light-emitting portion is The emitted light can pass through the optical mask.
  • the light-emitting part includes a plurality of lamp beads, the plurality of the lamp beads are arranged in the installation part in a distributed manner, and the lamp beads are SMD-LED lamp beads.
  • the surface of the optical mask has light mixing lines.
  • the light mixing pattern is a plurality of annular patterns arranged around the center of the optical mask or a plurality of compound eye structure patterns discretely distributed on the surface of the optical mask, and the plurality of annular patterns are along the path of the optical mask.
  • the optical mask in this application has the function of constraining the beam angle of the light passing through the optical mask. Since the light-emitting surface of the optical mask near the edge of the optical mask is inclined to the light-incident surface, the light passing through the edge of the optical mask can be directed toward the middle of the optical mask. The area is bent to effectively prevent glare from light passing through the optical mask. Since the optical mask is made of transparent materials, the loss of light in the process of passing through the optical mask is small, which can effectively improve the optical efficiency of the optical mask.
  • Fig. 1 is a schematic diagram according to an embodiment of the present application.
  • FIG. 2 is a schematic top view of the light source assembly of the present application
  • Fig. 3 is the schematic diagram that the mixed light pattern of the present application is annular pattern
  • FIG. 4 is a schematic diagram of the light-mixing pattern of the present application in the form of a dot-like pattern.
  • 200-optical mask 210-light entrance surface, 220-light exit surface, 230-inner concave surface, 240-light mixing texture
  • Figure 1 schematically shows a downlight according to one embodiment of the present application.
  • the whole body includes a light source assembly 100 and an optical mask 200 , the light source assembly 100 can emit light, the optical mask 200 is disposed on one side of the light source assembly 100 , and the light emitted by the light source assembly 100 can pass through the optical mask 200 .
  • the optical mask 200 is made of transparent material.
  • the loss of the light emitted by the light source assembly 100 after passing through the optical mask 200 is relatively small, thereby effectively improving the illumination intensity of the downlight in this embodiment.
  • the two axial ends of the optical mask 200 have oppositely arranged light incident surfaces 210 and light exit surfaces 220 .
  • the light-emitting surface 220 of the optical mask 200 near the edge of the optical mask 200 is inclined toward the light-incident surface 210 during the process of extending toward the edge of the optical mask 200 , that is, the light-emitting surface 220 of the optical mask 200 near its edge is inclined toward the light-incident surface 210 It is set so that the beam angle of the light emitted by the light source assembly 100 decreases after passing through the edge of the optical mask 200 .
  • the optical mask 200 has the function of constraining the beam angle of the light passing through the optical mask 200.
  • the structure can direct the light passing through the edge of the optical mask 200 to the light entrance surface 210.
  • the middle area of the optical mask 200 is bent, so as to effectively prevent the light from passing through the optical mask 200 to generate glare.
  • the beam angle is 70°-90°, and within this angle range, the light can effectively avoid the generation of glare.
  • both the light incident surface 210 and the light exit surface 220 can be set as curved surfaces, and the transition of the curved surfaces is smoother.
  • the curved surface transitions to the edge of the optical mask 200 .
  • the light emitting surface 220 can also be set as an inclined surface or a multi-segment inclined surface, and the light emitting surface 220 extends toward the edge of the optical mask 200 as an inclined plane or a multi-segment inclined plane. This arrangement can also make the light exit surface 220 face the light incident surface 210. The purpose of the tilt setting.
  • the light incident surface 210 may be set as a curved surface concave toward the light exit surface 220 , which can reduce the overall thickness of the optical mask 200 .
  • the middle region of the light-emitting surface 220 is concave toward the light-incident surface 210 to form the inner concave surface 230 , so the central region of the optical mask 200 extends toward the region close to the edge of the optical mask 200 , and the light-emitting surface 220 is facing away from the light-incident surface 220 .
  • the direction of the light surface 210 is inclined, so that the light passing through the area can be deflected toward the edge of the optical mask 200, thereby reducing the illumination intensity of the central area of the downlight and improving the illumination uniformity of the downlight.
  • the downlight further includes a secondary reflector 300
  • the secondary reflector 300 has a light inlet and a light outlet 310 arranged oppositely, the light inlet is connected to the light outlet surface 220 of the optical mask 200, and the secondary reflector
  • the inner wall of the reflector 300 has a reflective mirror surface, and the secondary reflector 300 can reflect part of the light extending thereon again, reducing the loss of the light emitted by the light source assembly 100 and improving the illumination intensity of the downlight.
  • the above-mentioned secondary reflector 300 has a cylindrical structure, and the inner diameter of the secondary reflector 300 gradually increases in the direction extending from the light inlet to the light outlet 310 .
  • the light source assembly 100 includes a mounting portion 110 and a light-emitting portion 120 , the light-emitting portion 120 is disposed in the mounting portion 110 , the mounting portion 110 has an opening 111 , and the optical mask 200 is disposed at the opening 111 , so that the light-emitting portion 120 The emitted light can pass through the optical mask 200 .
  • the purpose of disposing the mounting portion 110 is to support and install the light-emitting portion 120, and at the same time, the light emitted by the light-emitting portion 120 is restrained in the mounting portion 110 before passing through the optical mask 200, so as to reduce the loss of light.
  • the light-emitting portion 120 includes a plurality of lamp beads 121 , and the plurality of lamp beads 121 are disposed in the mounting portion 110 in a distributed manner, and the lamp beads 121 are SMD-LED lamp beads.
  • the arrangement of the plurality of lamp beads 121 can enhance the intensity of the light emitted by the light-emitting part 120, and at the same time, the SMD-LED lamp beads have high energy efficiency ratio and long service life.
  • the surface of the optical mask 200 has light-mixing lines 240, and the light-mixing lines 240 may be a plurality of annular lines arranged around the center of the optical mask 200 or a plurality of compound-eye structure lines discretely distributed on the surface of the optical mask 200. Each ring-shaped pattern extends along the radial direction of the optical mask 200 .
  • the purpose of setting the above-mentioned light mixing lines 240 is to block the lamp beads 121 and at the same time avoid problems such as ghosting and uneven superposition of light spots caused by multiple lamp beads 121 .
  • the smooth surface 210 is not limited in this application.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Planar Illumination Modules (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Abstract

一种筒灯，包括：光源组件（100）和光学面罩（200），光学面罩（200）设置在光源组件（100）的一侧，光学面罩（200）为透明材质，且具有位于光学面罩（200）轴向两端并相对设置的入光面（210）和出光面（220），光源组件（100）发出的光线由入光面（210）进入到光学面罩（200）内，并由出光面（220）穿出光学面罩（200），光学面罩（200）的出光面（220）靠近光学面罩（200）边缘处向光学面罩（200）的边缘延伸过程中朝向入光面（210）倾斜，以使光源组件（100）发出的光线穿过光学面罩（200）的边缘后光束角减小。

Description

筒灯 技术领域
本申请涉及灯具领域，特别涉及一种筒灯。
背景技术
在筒灯设计中，为了解决多颗灯珠的混光问题，传统的方式是用扩散板来混光。这种方式的优点在于混光较为均匀，但是由于扩散板的透过率较低，有一部分光线被反射回光学腔，通过光学腔反射后再次通过扩散面罩出射，光线在来回反射过程中会损失较多的能量，从而导致筒灯的光学效率只有75％左右，难以满足新的能效标准。
发明内容
本发明提出了一种筒灯，包括：光源组件和光学面罩；
其中，所述光学面罩设置在所述光源组件的一侧，所述光学面罩为透明材质，且具有位于所述光学面罩轴向两端并相对设置的入光面和出光面，所述光源组件发出的光线由所述入光面进入到所述光学面罩内，并由所述出光面穿出所述光学面罩；
所述光学面罩的出光面靠近所述光学面罩边缘处向所述光学面罩的边缘延伸过程中朝向所述入光面倾斜，以使所述光源组件发出的光线穿过所述光学面罩的边缘后光束角减小。
进一步的，所述光源组件发出的光线穿过所述光学面罩后光束角为70度-90度。
进一步的，所述入光面和所述出光面为曲面。
进一步的，所述出光面的中部区域凹向所述入光面以形成内凹面。
进一步的，所述筒灯还包括二级反射器，所述二级反射器具有相对设置 的进光口和出光口，所述进光口与所述光学面罩的出光面相接，所述二级反射器的内壁具有反射镜面。
进一步的，所述二级反射器为筒状结构，所述二级反射器由所述进光口向出光口延伸的方向上内径逐渐增大。
进一步的，所述光源组件包括安装部和发光部，所述发光部设置在所述安装部内，所述安装部具有开口，且所述光学面罩设置在所述开口处，以使所述发光部发射的光线能够穿过所述光学面罩。
进一步的，所述发光部包括多个灯珠，多个所述灯珠分布设置在所述安装部内，所述灯珠为SMD-LED灯珠。
进一步的，所述光学面罩的表面具有混光纹路。
进一步的，所述混光纹路为多个绕所述光学面罩中心设置的环形纹路或多个离散分布在所述光学面罩表面的复眼结构纹路，多个所述环形纹路沿所述光学面罩的径向延伸设置。
与现有技术相比，本发明的有益效果如下：
本申请中的光学面罩具有约束光线穿过光学面罩后的光束角的作用，由于光学面罩靠近其边缘处的出光面向入光面倾斜，能够将穿过光学面罩边缘的光线向靠近光学面罩的中间区域弯折，从而有效地防止光线穿过光学面罩后产生眩光。时由于光学面罩采用透明材料制得，因此光线穿过光学面罩的过程中损耗较小，能够有效提升光学面罩的光学效率。
附图说明
此处所说明的附图用来提供对本申请的进一步理解，构成本申请的一部分，本申请的示意性实施例及其说明用于解释本申请，并不构成对本申请的不当限定。在附图中：
图1是根据本申请的一个实施例的示意图；
图2是本申请的光源组件的俯视示意图；
图3是本申请的混光纹路呈环形纹路的示意图；
图4是本申请的混光纹路呈点状纹路的示意图。
附图标记说明：
100-光源组件，110-安装部，111-开口，120-发光部，121-灯珠；
200-光学面罩，210-入光面，220-出光面，230-内凹面，240-混光纹路；
300-二级反射器，310-出光口。
具体实施方式
为使本申请的目的、技术方案和优点更加清楚，下面将结合本申请具体实施例及相应的附图对本申请技术方案进行清楚、完整地描述。显然，所描述的实施例仅是本申请一部分实施例，而不是全部的实施例。基于本申请中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本申请保护的范围。
图1示意性地显示了根据本申请的一个实施例的筒灯。通体包括光源组件100和光学面罩200，光源组件100能够发射出光线，光学面罩200设置在光源组件100的一侧，光源组件100发出的光线能够穿过光学面罩200。光学面罩200为透明材质，相应的，光源组件100发出的光线穿过光学面罩200后的损耗会较小，从而有效提升本实施例中筒灯的光照强度。
光学面罩200轴向两端具有相对设置的入光面210和出光面220，光源组件100发出的光线由入光面210进入到光学面罩200内，再由出光面220穿出光学面罩200。光学面罩200靠近光学面罩200边缘处的出光面220向光学面罩200的边缘延伸过程中朝向入光面210倾斜，即光学面罩200靠近其边缘处的区域的出光面220是向着入光面210倾斜设置的，以使光源组件100发出的光线穿过光学面罩200的边缘后光束角减小。光学面罩200具有约束光线穿过光学面罩200后的光束角的作用，由于光学面罩200靠近其边缘处的出光面220向入光面210倾斜，该结构能够将穿过光学面罩200边缘 的光线向光学面罩200的中间区域弯折，从而有效地防止光线穿过光学面罩200后产生眩光。
在一个实施例中，光源组件100发出的光线穿过光学面罩200后光束角为70度-90度，在这一角度范围内光线能够有效避免眩光产生。
在一个实施例中，上述的入光面210和出光面220都可设置为曲面，曲面的过渡更加平滑。相应的，出光面220靠近光学面罩200边缘处是曲面过渡至光学面罩200的边缘。值得注意的是，出光面220也可以设置为斜面或者多段斜面，出光面220向光学面罩200的边缘延伸是倾斜的平面或者多段倾斜平面，这样设置也能够达到使出光面220向着入光面210倾斜设置的目的。
入光面210可以设置为向出光面220一侧凹陷的曲面，这样能够降低光学面罩200的整体厚度。
在一个实施例中，出光面220的中间区域凹向入光面210以形成内凹面230，因此光学面罩200的中心区域向着靠近光学面罩200的边缘延伸的区域上，出光面220是向着远离入光面210的方向倾斜，这样设置能够使通过该区域的光线向着光学面罩200的边缘方向偏折，从而降低筒灯中心区域的光照强度，提高筒灯的光照均匀度。
在一个实施例中，筒灯还包括二级反射器300，二级反射器300具有相对设置的进光口和出光口310，进光口与光学面罩200的出光面220相接，二级反射器300的内壁具有反射镜面，二级反射器300能够将部分延伸至其上的光线再次反射，减小光源组件100发出的光线的损耗，以提高筒灯的光照强度。上述的二级反射器300为筒状结构，二级反射器300由进光口向出光口310延伸的方向上内径逐渐增大。
在一个实施例中，光源组件100包括安装部110和发光部120，发光部120设置在安装部110内，安装部110具有开口111，且光学面罩200设置在开口111处，以使发光部120发射的光线能够穿过光学面罩200。设置安装 部110的目的在于支撑安装发光部120，同时使发光部120发出的光线在穿过光学面罩200之前约束在安装部110内，以减小光线的损耗。
在一个实施例中，发光部120包括多个灯珠121，多个灯珠121分布设置在安装部110内，灯珠121为SMD-LED灯珠。设置多个灯珠121能够加强发光部120发出的光线的强度，同时SMD-LED灯珠的能效比高，使用寿命长。
在一个实施例中，光学面罩200的表面具有混光纹路240，混光纹路240可以为多个绕光学面罩200中心设置的环形纹路或多个离散分布在光学面罩200表面的复眼结构纹路，多个环形纹路沿光学面罩200的径向延伸设置。设置上述的混光纹路240的目的是遮挡灯珠121，同时避免多颗灯珠121产生的重影和光斑叠加不均匀等问题，混光纹路240可以设置在出光面220，也可以设置在入光面210，对此本申请不作限制。
以上所述仅为本申请的实施例而已，并不用于限制本申请。对于本领域技术人员来说，本申请可以有各种更改和变化。凡在本申请的精神和原理之内所作的任何修改、等同替换、改进等，均应包含在本申请的权利要求范围之内。

Claims (10)

  1. 一种筒灯，其中，包括光源组件(100)和光学面罩(200)；
    其中，所述光学面罩(200)设置在所述光源组件(100)的一侧，所述光学面罩(200)为透明材质，且具有位于所述光学面罩(200)轴向两端并相对设置的入光面(210)和出光面(220)，所述光源组件(100)发出的光线由所述入光面(210)进入到所述光学面罩(200)内，并由所述出光面(220)穿出所述光学面罩(200)；
    所述光学面罩(200)的出光面(220)靠近所述光学面罩(200)边缘处向所述光学面罩(200)的边缘延伸过程中朝向所述入光面(210)倾斜，以使所述光源组件(100)发出的光线穿过所述光学面罩(200)的边缘后光束角减小。
  2. 根据权利要求1所述的筒灯，其中，所述光源组件(100)发出的光线穿过所述光学面罩(200)后光束角为70度-90度。
  3. 根据权利要求1所述的筒灯，其中，所述入光面(210)和所述出光面(220)为曲面。
  4. 根据权利要求3所述的筒灯，其中，所述出光面(220)的中部区域凹向所述入光面(210)以形成内凹面(230)。
  5. 根据权利要求1所述的筒灯，其中，所述筒灯还包括二级反射器(300)，所述二级反射器(300)具有相对设置的进光口和出光口(310)，所述进光口与所述光学面罩(200)的出光面(220)相接，所述二级反射器(300)的内壁具有反射镜面。
  6. 根据权利要求5所述的筒灯，其中，所述二级反射器(300)为筒状结构，所述二级反射器(300)由所述进光口向出光口(310)延伸的方向上内径逐渐增大。
  7. 根据权利要求1所述的筒灯，其中，所述光源组件(100)包括安装部(110)和发光部(120)，所述发光部(120)设置在所述安装部(110)内，所述安装部(110) 具有开口(111)，且所述光学面罩(200)设置在所述开口(111)处，以使所述发光部(120)发射的光线能够穿过所述光学面罩(200)。
  8. 根据权利要求7所述的筒灯，其中，所述发光部(120)包括多个灯珠(121)，多个所述灯珠(121)分布设置在所述安装部(110)内，所述灯珠(121)为SMD-LED灯珠。
  9. 根据权利要求1所述的筒灯，其中，所述光学面罩(200)的表面具有混光纹路(240)。
  10. 根据权利要求9所述的筒灯，其中，所述混光纹路(240)为多个绕所述光学面罩(200)中心设置的环形纹路或多个离散分布在所述光学面罩(200)表面的复眼结构纹路，多个所述环形纹路沿所述光学面罩(200)的径向延伸设置。
PCT/CN2021/136783 2020-12-11 2021-12-09 筒灯 WO2022121983A1 (zh)

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