WO2020063569A1 - 一种扩散板和具有该扩散板的灯具 - Google Patents

一种扩散板和具有该扩散板的灯具 Download PDF

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Publication number
WO2020063569A1
WO2020063569A1 PCT/CN2019/107451 CN2019107451W WO2020063569A1 WO 2020063569 A1 WO2020063569 A1 WO 2020063569A1 CN 2019107451 W CN2019107451 W CN 2019107451W WO 2020063569 A1 WO2020063569 A1 WO 2020063569A1
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light
diffusion plate
lamp
housing
microstructures
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PCT/CN2019/107451
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English (en)
French (fr)
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谯胜杰
倪国龙
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欧普照明股份有限公司
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Publication of WO2020063569A1 publication Critical patent/WO2020063569A1/zh

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    • 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

Definitions

  • the utility model relates to a diffusion plate and a lamp having the same.
  • the conventional method is a light guide plate + diffusion plate scheme.
  • the diffuser is an optical element often used in optical design. Its main function is to sufficiently diffuse the incident light to achieve a soft and uniform irradiation effect.
  • the traditional diffusion plate mainly adds chemical particles as scattering particles in the substrate of the diffusion plate, so that when the light passes through the scattering layer, it continuously refracts, reflects and scatters in two media with different refractive indices, thereby generating optical diffusion. Effect.
  • the absorption of light by diffusing particles will inevitably occur, resulting in a decrease in the utilization rate of light energy.
  • the purpose of the utility model is to solve the above problems, and provide a micro-structured light diffusion plate, which can effectively reduce glare and achieve a softer and uniform irradiation effect.
  • the technical solution adopted by the present utility model is to provide a diffuser plate including a light incident surface and a light emitting surface.
  • the light emitting surface of the diffuser plate is provided with continuous microstructures.
  • the microstructures are arranged in a honeycomb shape.
  • each of said microstructures has a curved surface.
  • each of said microstructures has a convex surface.
  • each of said microstructures has a concave surface.
  • each of the microstructures is the same, and the width ranges from 5 mm to 15 mm.
  • the utility model also provides a lamp, which comprises a base, a lamp arm, and a lamp head.
  • the lamp arm is connected to the lamp head and the base, and is characterized in that the lamp head includes a shell; a light source disposed in the shell;
  • the casing has a light outlet, and the diffusion plate as described above covers the light outlet.
  • the lamp head further includes a light guide plate, the light guide plate is disposed between the housing and the diffuser plate, and the light source is disposed on a side of the light guide plate and faces the light guide plate to emit light.
  • the lamp head further includes a reflection paper, and the reflection paper, the light guide plate, and the diffusion plate are sequentially stacked and arranged.
  • the lamp cap further includes a heat dissipation casing
  • the heat dissipation casing includes a bottom portion and a side portion
  • the light source and the side portion of the heat dissipation casing are thermally connected
  • the bottom portion of the heat dissipation casing and the shell are thermally conductive connection.
  • the lamp holder further includes a front pressure ring, which is disposed at the light exit of the housing and is fixedly connected to the housing, and the diffuser plate is pressed on the housing by the front pressure ring. Light exit.
  • a front pressure ring which is disposed at the light exit of the housing and is fixedly connected to the housing, and the diffuser plate is pressed on the housing by the front pressure ring. Light exit.
  • the diffuser plate provided by the utility model has the micro-structure array arrangement on the surface thereof, which causes the light to be refracted in different directions as it passes, and changes the course of the light, thereby reducing glare and achieving a softer and uniform irradiation effect.
  • FIG. 1 is a schematic structural diagram of a diffusion plate of the present invention
  • FIG. 2 is a schematic view of a diffusion plate having a convex surface microstructure
  • FIG. 3 is a light path diagram of a diffuser plate having a convex surface microstructure
  • FIG. 4 is a schematic diagram of a diffusion plate having a concave surface microstructure
  • FIG. 5 is a light path diagram of a diffuser plate having a concave surface microstructure
  • FIG. 6 is a schematic structural diagram of a lamp of the present invention.
  • Fig. 7 is an exploded view of a lamp cap of the lamp of the present invention.
  • FIG. 1 shows a specific embodiment of a diffuser plate provided by the present invention.
  • the diffuser plate 101 is a flat plate structure and includes a light exit surface and a light entrance surface.
  • the diffuser plate 101 cooperates with a circular light fixture and is thus a circular plate shape.
  • the diffuser plate 101 may have any shape according to the shape of the light fixture.
  • the diffuser plate 101 is provided with microstructures on one side of the light emitting surface.
  • the microstructures are continuously arranged in an array. Each microstructure has the same size and shape as a regular hexagon, and all the microstructures are arranged in a honeycomb shape. .
  • the width W of the regular hexagon is in the range of 5 mm to 15 mm. In this way, the microstructure of the surface of the diffuser plate 101 can be seen with the naked eye when in use. When the lamp is lit, the diffuser plate 101 The surface of the material of the conventional diffuser is obviously different, and the outline of the honeycomb achieves a scientific and technological effect through optical action.
  • Each individual microstructure has a curved surface.
  • the curved surface can be a convex surface, as shown in FIG. 2, or a concave surface, as shown in FIG. 4.
  • Figure 3 is the light path diagram of the microstructure on the convex surface.
  • Figure 5 is the light path diagram of the microstructure on the concave surface.
  • the concave surface will diverge light more than the convex surface. In the design, it can be selected according to the needs of the actual product. . Comparing the luminous flux of the diffuser plate 101 in this embodiment with the traditional diffuser plate in the 70-90 degree ring zone, the solution of this embodiment has less luminous flux in this range, so the glare is effectively reduced.
  • the diffuser plate 101 described in this application can be applied to various lamps such as ceiling lamps, chandeliers, and wall lamps.
  • the diffuser plate 101 is applied to a desk lamp as shown in FIG. 6.
  • the table lamp includes a lamp head 1, a base 3, and a lamp arm 2 connecting the lamp head 1 and the base 3.
  • the lamp arm 2 and the lamp head 1, the base 3 are connected through a pivoting structure.
  • the lamp holder 1 includes a housing 106 having an opening portion as a light outlet.
  • the opening portion is provided with a front pressure ring 107.
  • the front pressure ring 107 is connected to the housing by means of snaps, threads, etc. 106 is fixedly connected, and the honeycomb prism diffuser plate 101 provided by the present utility model is set on the light outlet of the casing 106.
  • a housing space is formed between the housing 106 and the diffuser plate 101, and a light source 104, a light guide plate 102, a reflective paper 103, and a heat dissipation case 105 are disposed inside the housing space.
  • the optical design of the base 1 adopts a light guide plate-side light emitting structure, and the light source 104 is arranged around the outer periphery of the light guide plate 102.
  • Light enters from the peripheral side of the light guide plate 102 and exits from a surface facing the diffuser plate 101.
  • a reflective paper 103 is provided on the side of the light guide plate 102 facing away from the diffuser plate 101 so that the light emitted from the back side of the light guide plate 102 can By reflection again, the diffuser plate 101 is turned.
  • the light source 104 is an LED light source.
  • a heat dissipation case 105 is further provided in the lamp cap 1.
  • the heat dissipation case 105 includes a bottom portion having the same shape as the diffuser plate 101, the light guide plate 102, and the reflective paper 103, and a side portion extending from the bottom portion.
  • the reflective paper 103, the light guide plate 102, and the diffuser plate 101 are sequentially stacked from the bottom of the heat dissipation casing 105 to the light outlet, and are surrounded by the side of the heat dissipation casing 105.
  • the light source 103 is disposed on the inner side of the side of the heat dissipation casing 105 and is thermally connected to the heat dissipation casing 105, and the bottom of the heat dissipation casing 105 is in thermal contact with the housing 106 to form a heat conductive connection.
  • the heat generated by the light source 103 is conducted by the heat dissipation case 105 to the case 106 to achieve heat dissipation.
  • the table lamp of this implementation adopts a honeycomb prism structure of the diffuser plate 101, which has a unique appearance and can attract consumers' eyeballs.
  • the optical effect can also meet national standards.

Abstract

一种扩散板(101)，包括入光面和出光面，扩散板(101)的出光面设置有连续排布的微结构。具有扩散板(101)的灯具，包括底座(3)、灯臂(2)、灯头(1)，灯臂(2)连接灯头(1)和底座(3)；灯头(1)包括外壳(106)；设置在外壳(106)内的光源(104)；外壳(106)具有出光口，扩散板(101)覆盖出光口。扩散板(101)通过其表面的微结构的阵列排列，使光线经过时发生不同方向的折射，改变光的行进路线，从而减少眩光，实现更柔和、均匀的照射效果。

Description

一种扩散板和具有该扩散板的灯具 技术领域
本实用新型涉及一种扩散板和具有该扩散板的灯具。
背景技术
而目前市面上的LED灯具很多会采用导光板方式，常规的做法是导光板+扩散板的方案。扩散板是光学设计中经常会用到光学元件，其主要功能是使入射光充分散射，实现柔和、均匀的照射效果。传统的扩散板主要是在扩散板基材中加入化学颗粒作为散射粒子，使光线在经过散射层时不断的在两个折射率相异的介质中发生折射、反射与散射，以此产生光学扩散的效果。然而这种方式，将不可避免地存在扩散粒子对光的吸收，造成光能利用率的降低。
实用新型内容
本实用新型的目的是为了解决上述问题，提供一种微结构光扩散板，有效减少眩光，并实现更柔和、均匀的照射效果。
本实用新型为实现上述功能，所采用的技术方案是提供一种扩散板，包括入光面和出光面，其特征在于：所述扩散板的出光面设置有连续排布的微结构。
优选的，所述微结构呈蜂窝状排布。
优选的，每一个所述微结构具有弯曲表面。
优选的，每一个所述微结构具有凸形表面。
优选的，每一个所述微结构具有凹形表面。
优选的，每一个所述微结构的大小相同，其宽度范围为5mm～15mm。
本实用新型还提供一种灯具，包括底座、灯臂、灯头，所述灯臂连接所述灯头和所述底座，其特征在于：所述灯头包括外壳；设置在所述外壳内的光源；所述外壳具有出光口，如上所述的扩散板覆盖所述出光口。
优选的，所述灯头还包括导光板，所述导光板设置在所述外壳和所述扩散板之间，所述光源设置在所述导光板的侧面，并面向所述导光板发光。
优选的，所述灯头还包括反射纸，所述反射纸、导光板、扩散板依次层叠设置。
优选的，所述灯头还包括散热壳体，所述散热壳体包括底部和侧部，所述光源和所述散热壳体的侧部导热连接，所述散热壳体的底部和所述外壳导热连接。
优选的，所述灯头还包括前压环，所述前压环设置在所述外壳的出光口，并和所述外壳固定连接，所述扩散板被所述前压环压设在所述外壳的出光口上。
本实用新型提供的扩散板，通过其表面的微结构的阵列排列，使光线经过时发生不同方向的折射，改变光的行进路线，从而减少眩光，实现更柔和、均匀的照射效果。
附图说明
图1是本实用新型扩散板的结构示意图；
图2是具有凸形表面微结构的扩散板的示意图；
图3是具有凸形表面微结构的扩散板的光路图；
图4是具有凹形表面微结构的扩散板的示意图；
图5是具有凹形表面微结构的扩散板的光路图；
图6是本实用新型灯具的结构示意图；
图7是本实用新型灯具灯头的分解图。
具体实施方式
以下结合附图和具体实施例对本实用新型提出的扩散板和具有该扩散板的灯具作进一步详细的说明。
图1示出的是本实用新型提供扩散板的一具体实施例，扩散板101为平板结构，包括出光面和入光面。在图1中扩散板101配合圆形灯具因此为圆板状，在其他实施例中扩散板101可以根据灯具外形为任意形状。如图1所示，扩散板101在出光面一侧上设置有微结构，微结构以阵列形式连续排布，每一个微结构大小、形状相同为正六边形，全部微结构呈蜂窝状排布。为达到较好的出光效果，正六边形的宽度W的范围为5mm～15mm，这样在使用状态时凭肉眼即可看到扩散板101表面的微结构，在灯具点亮状态下，扩散板101与常规扩散板材质的表面明显不同，蜂窝的轮廓经过光学作用所达到一种科技感的效果。
每一个单独的微结构都具有弯曲表面，弯曲表面可以为凸形表面，如图2所示，也可以为凹形表面，如图4所示。图3为凸形表面微结构的光路图，图5为凹形表面微结构的光路图，凹形表面对光线的发散会较凸形表面大一些，在设计中可以结合实际产品的需要进行选择。将本实施例扩散板101和传统扩散板在70度到90度环带的光通量进行对比，本实施例的方案在此范围的光通量要少，因此有效地减少了眩光。
本申请所述扩散板101可以应用于吸顶灯、吊灯、壁灯等各种灯具，在本实施例中，扩散板101应用于如图6所示的台灯。台灯包括灯头1、 底座3以及连接灯头1和底座3的灯臂2，灯臂2和灯头1、底座3之间通过枢转结构连接。
灯头1的具体结构如图7所示，灯头1包括外壳106，外壳106具有作为出光口的开口部，开口部设置有前压环107，前压环107通过卡扣、螺纹等连接方式和外壳106固定连接，并将本实用新型提出的蜂窝棱镜扩散板101压设在外壳106的出光口上。外壳106和扩散板101间形成一容置空间，其内部设置有光源104、导光板102，反射纸103、散热壳体105。
灯头1的光学设计采用导光板侧发光结构，光源104环设于导光板102外周，自导光板102周侧入光并自面对扩散板101的表面出射。为保证发光效率的最大化，希望自光源104发出的光线全部由出光口射出，在导光板102背向扩散板101一侧设置有反光纸103，使得从导光板102背侧透出的光可以通过反射再次转向扩散板101。
光源104为LED光源，为消除其产生的热量，灯头1中还设置有散热壳体105。散热壳体105包括和扩散板101、导光板102、反射纸103形状一致的底部，以及从底部延伸出来的侧部。反射纸103、导光板102、扩散板101自散热壳体105底部面向出光口依次层叠设置，并被散热壳体105侧部所围绕。光源103设置在散热壳体105侧部的内侧，和散热壳体105导热连接，而散热壳体105底部和外壳106热接触，形成导热连接。光源103产生的热由散热壳体105传导至外壳106实现散热。
本实施的台灯，采用了蜂巢棱镜结构的扩散板101其外观独特，能吸引消费者眼球，光学效果又能符合国家标准。
上文对本实用新型优选实施例的描述是为了说明和描述，并非想要把 本实用新型穷尽或局限于所公开的具体形式，显然，可能做出许多修改和变化，这些修改和变化可能对于本领域技术人员来说是显然的，应当包括在由所附权利要求书定义的本实用新型的范围之内。

Claims (11)

  1. 一种扩散板,包括入光面和出光面,其特征在于：所述扩散板的出光面设置有连续排布的微结构。
  2. 根据权利要求1所述的扩散板，其特征在于：所述微结构呈蜂窝状排布。
  3. 根据权利要求2所述的扩散板，其特征在于：每一个所述微结构具有弯曲表面。
  4. 根据权利要求3所述的扩散板，其特征在于：每一个所述微结构具有凸形表面。
  5. 根据权利要求3所述的扩散板，其特征在于：每一个所述微结构具有凹形表面。
  6. 根据权利要求2所述的扩散板，其特征在于：每一个所述微结构的大小相同,其宽度范围为5mm～15mm。
  7. 一种灯具，包括底座、灯臂、灯头，所述灯臂连接所述灯头和所述底座，其特征在于：所述灯头包括外壳；设置在所述外壳内的光源；所述外壳具有出光口，如权利要求1-6任一所述的扩散板覆盖所述出光口。
  8. 根据权利要求7所述的灯具，其特征在于：所述灯头还包括导光板，所述导光板设置在所述外壳和所述扩散板之间，所述光源设置在所述导光板的侧面，并面向所述导光板发光。
  9. 根据权利要求8所述的灯具，其特征在于：所述灯头还包括反射纸，所述反射纸、导光板、扩散板依次层叠设置。
  10. 根据权利要求9所述的灯具，其特征在于：所述灯头还包括散热 壳体，所述散热壳体包括底部和侧部，所述光源和所述散热壳体的侧部导热连接，所述散热壳体的底部和所述外壳导热连接。
  11. 根据权利要求10所述的灯具，其特征在于：所述灯头还包括前压环，所述前压环设置在所述外壳的出光口，并和所述外壳固定连接，所述扩散板被所述前压环压设在所述外壳的出光口上。
PCT/CN2019/107451 2018-09-27 2019-09-24 一种扩散板和具有该扩散板的灯具 WO2020063569A1 (zh)

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CN115013756B (zh) * 2021-03-05 2023-07-21 北京字节跳动网络技术有限公司 一种发光装置及灯具

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CN104110649A (zh) * 2013-04-18 2014-10-22 鸿富锦精密工业（深圳）有限公司 扩散板及背光模组
CN104422985A (zh) * 2013-09-10 2015-03-18 纬创资通股份有限公司 导光板及光源装置
WO2016190719A1 (ko) * 2015-05-27 2016-12-01 주식회사 애니캐스팅 백라이트 유닛용 엘이디 렌즈
CN209116253U (zh) * 2018-09-27 2019-07-16 欧普照明股份有限公司 一种扩散板和具有该扩散板的灯具

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