WO2022002264A1 - 侧发光平板灯 - Google Patents

侧发光平板灯 Download PDF

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Publication number
WO2022002264A1
WO2022002264A1 PCT/CN2021/104318 CN2021104318W WO2022002264A1 WO 2022002264 A1 WO2022002264 A1 WO 2022002264A1 CN 2021104318 W CN2021104318 W CN 2021104318W WO 2022002264 A1 WO2022002264 A1 WO 2022002264A1
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WO
WIPO (PCT)
Prior art keywords
light
platform
guide plate
light source
flat panel
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Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/CN2021/104318
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English (en)
French (fr)
Inventor
王文卓
李扬
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Opple Lighting Co Ltd
Suzhou Op Lighting Co Ltd
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Opple Lighting Co Ltd
Suzhou Op Lighting Co Ltd
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Publication date
Application filed by Opple Lighting Co Ltd, Suzhou Op Lighting Co Ltd filed Critical Opple Lighting Co Ltd
Publication of WO2022002264A1 publication Critical patent/WO2022002264A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • F21S2/00—Systems of lighting devices, not provided for in main groups F21S4/00 - F21S10/00 or F21S19/00, e.g. of modular construction
    • 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
    • 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

Definitions

  • the present application relates to the technical field of lighting, and in particular, to a side-emitting flat panel lamp.
  • An object of the present application is to provide a side-emitting flat panel light to overcome the above-mentioned problems or at least partially solve the above-mentioned problems.
  • a further object of the present application is to improve the structure of the main frame of the side-emitting flat panel light, thereby improving the problem of the side-emitting flat panel light's bright edge.
  • Another further objective of the present application is to satisfy the light absorption effect by performing a certain optical design on the dentate structure, so as to obtain a better anti-bright edge effect.
  • the present application provides a side-emitting flat panel light, comprising: a main body frame and a light source panel, an exit panel and a light guide plate arranged in the main body frame, wherein,
  • the bottom of the main frame is provided with a light outlet
  • exit panel and the light guide plate are stacked in order from the bottom of the main frame upwards;
  • the light source plate is arranged along the side wall of the main frame, the light source plate is provided with a light source, the light emitted by the light source enters the light guide plate through the side of the light guide plate, and then enters the exit panel through the lower surface of the light guide plate, and exits from the light outlet;
  • the main frame is formed by splicing a plurality of profiles, and the profiles forming the bottom of the main frame include a first platform, and the upper surface of the first platform includes at least one reflective surface inclined toward the light source direction.
  • At least one light-shielding groove is formed on the upper surface of the first platform; wherein,
  • the opening of the light-shielding groove is inclined toward the light source
  • a reflection surface is formed on the inner wall of the light-shielding groove facing the direction of the light source.
  • the included angle between the reflective surface and the bottom surface of the light-shielding groove is 40° ⁇ 90°.
  • the upper surface of the first platform abuts the lower surface of the exit panel.
  • the profile forming the bottom of the main body frame further comprises a second platform; wherein,
  • the height of the upper surface of the second platform relative to the lower surface of the first platform is not lower than the height of the bottom surface of the light-shielding groove relative to the lower surface of the first platform.
  • the lower surface of the first platform is flush with the lower surface of the second platform.
  • the lower surface of the first platform protrudes from the lower surface of the second platform.
  • the upper surface of the second platform is provided with a plurality of raised structures, and the raised structures are raised portions upward from the upper surface of the second platform;
  • Two adjacent protruding structures form screw grooves, the opening positions of the screw grooves are formed with oblique angles, and the inner walls of the screw grooves are provided with anti-slip tooth components.
  • the second platform is an internally hollow cavity structure
  • the protruding structure protrudes upward from the top surface of the cavity structure.
  • a reflective paper and a backboard are also arranged in the main frame; wherein,
  • the reflective paper and the back plate are stacked in sequence from the light guide plate upward, and the back plate is fixedly connected with the main frame at the top of the main frame.
  • a buffer cotton pad is also stacked between the reflective paper and the back plate.
  • the main frame of the side-emitting flat panel light provided by the present application is formed by splicing multiple profiles, and the profiles include a first platform, and a number of reflective surfaces inclined toward the light source are designed on the inner side of the first platform.
  • the surface can reflect the light irradiated on the reflective surface multiple times, thereby reducing the light energy of the light and helping to improve the problem of the bright edge of the flat panel lamp.
  • the reflective surface of the present application adopts a certain optical design, which can obtain the best light absorption effect, and the effect of preventing bright edges is better.
  • FIG. 1 is a schematic cross-sectional structure diagram of a side-emitting flat panel lamp according to an embodiment of the present application
  • FIG. 2 is a schematic structural diagram of the main frame of the side-emitting flat panel lamp shown in FIG. 1;
  • FIG. 3 is a schematic structural diagram of the profiles forming the main frame shown in FIG. 2;
  • FIG. 4 is a schematic cross-sectional structural diagram of a side-emitting flat panel light according to another embodiment of the present application when the main frame and the T-shaped keel are installed.
  • Fig. 5 is a schematic partial enlarged view of region B shown in Fig. 4;
  • FIG. 6 is a schematic cross-sectional structure diagram of a part of the components of a side-emitting flat panel lamp without a reflective surface inclined toward the direction of the light source;
  • FIG. 7 is a schematic cross-sectional structural diagram of a main frame of a side-emitting flat panel lamp and a T-shaped keel installed according to another embodiment of the present application.
  • FIG. 1 is a schematic cross-sectional structure diagram of a side-emitting flat panel lamp according to an embodiment of the present application.
  • the side-emitting flat panel light according to the embodiment of the present application may include: a main body frame 1 , a light source panel 9 disposed in the main body frame 1 , an exit panel 2 and a light guide plate 4 .
  • the bottom of the main frame 1 is provided with a light outlet
  • the outgoing panel 2 and the light guide plate 4 are sequentially stacked from the bottom of the main frame 1 upwards
  • the light source plate 9 is disposed along the side wall of the main frame 1
  • the light source plate 9 is disposed with a light source 10
  • the light emitted by the light source 10 enters the light guide plate 4 through the side of the light guide plate 4, and then enters the exit panel 2 through the lower surface of the light guide plate 4, and exits the lamp body from the light exit port.
  • the main frame 1 is composed of a plurality of profiles 100.
  • the profile 100 forming the bottom of the main frame 1 includes a first platform 11
  • the upper surface of the first platform 11 includes at least one reflective surface 13 inclined toward the light source.
  • This embodiment provides a side-emitting flat panel lamp.
  • a plurality of profiles 100 are spliced to form a main frame 1.
  • the profiles 100 forming the bottom of the main frame 1 include a first platform 11, and the upper surface of the first platform 11 includes at least one plate inclined toward the light source.
  • the reflective surface 13, which is inclined toward the light source direction, can reflect the light multiple times, and the light can reduce the light energy after being repeatedly reflected by the reflective surface 13, so as to solve the problem of the bright edge of the flat panel lamp.
  • FIG. 2 is a schematic structural diagram of the main body frame 1 of the side-emitting flat panel lamp shown in FIG. 1
  • FIG. 3 is a structural schematic diagram of the profiles 100 composing the main body frame 1 shown in FIG. 2
  • the main frame 1 can be formed by splicing four profiles 100 with the same cross section.
  • the light outlet is located at the bottom of the main frame 1 and on the side of the first platform 11 away from the light source board 9 .
  • the upper surface of the first platform 11 in the area between the side walls of the main frame 1 may include a plurality of reflective surfaces 13 inclined toward the light source, so that the area capable of reflecting light is larger and the effect of preventing bright edges is better.
  • the reflective surfaces 13 can be evenly distributed on the inner side of the first platform 11 at the same interval (that is, the side of the first platform 11 facing the exit panel 2 ), or the reflective surfaces 13 can be arranged at different intervals, which is not specified in this application. limited.
  • a light emitting diode (LED) light source 10 is taken as an example to describe the case where the light of the light source enters the light guide plate 4 and exits from the light guide plate 4 .
  • the light source 10 provided on the light source plate 9 is a light emitting diode (LED)
  • the light guide plate 4 is an optical element with side light entering, the light emitted by the LED can enter the interior of the light guide plate 4 from the side of the light guide plate 4, and it is incident on the light guide plate 4.
  • the light inside the light guide plate 4 can satisfy the conditions of light density to light sparseness, and the incident angle is greater than the critical angle, so that the light incident inside the light guide plate 4 can be propagated in the way of total reflection inside the light guide plate 4.
  • the light guide plate 4 will be distributed with light emitting dots according to a certain design, and the dots will destroy the condition of total reflection so that the light will be emitted from the light guide plate 4 again.
  • FIG. 4 is a schematic cross-sectional structure diagram of a side-emitting flat panel light according to another embodiment of the present application when the main frame and the T-shaped keel are installed
  • FIG. 5 is a schematic partial enlarged view of the area B shown in FIG. 4
  • FIG. 6 is not provided
  • the light emitted by the LED does not all enter the interior of the light guide plate 4 from the side of the light guide plate 4 , but there will be a part of the light, and the light direction of this part of the light will be towards a certain direction obliquely in front of the LED.
  • the light is emitted in the range of 40° to 60° obliquely in front of the LED.
  • the bottom of the main frame 1 is not provided with a reflective surface 13 inclined towards the light source, this part of the light will be in the main frame 1. The bottom is directly reflected, and the light energy is stronger at this time, so that a bright edge is generated on the side of the side light-emitting flat panel light.
  • a blocking wall can be provided at the bottom of the main frame 1 to achieve a certain shading effect.
  • the blocking wall is an upward protrusion on the bottom of the main frame 1.
  • the retaining wall can block the light inside the retaining wall, that is, the light falling between the side of the retaining wall close to the light source plate 9 and the light source plate 9, and the stray light from the light guide plate 4 outside the retaining wall. In this way, although it can play the role of anti-bright edge, there will be a problem that the effect of anti-bright edge is not good.
  • the blocking wall can be arranged at a position away from the light source 10, so as to block a part of the stray light from the light guide plate 4, thereby improving the effect of anti-bright edge. , but adopting this method will result in the inability to fix the exit panel 2 , thereby causing the overall structure of the lamp to be unstable.
  • the inventor of the present application has obtained through a large number of experiments that, as shown in FIG. 5 , at least one light-shielding groove can be formed on the upper surface of the first platform 11 .
  • the opening direction of the light-shielding groove is inclined toward the direction of the light source
  • the light-shielding groove has an inner wall facing the direction of the light source and an inner wall facing away from the direction of the light source
  • a reflection surface 13 is formed on the inner wall of the light-shielding groove facing the direction of the light source, and the light of the bright edge is formed in the shading.
  • FIG. 7 is a schematic cross-sectional structural diagram of a main frame of a side-emitting flat panel lamp and a T-shaped keel installed according to another embodiment of the present application.
  • A the angle between the reflection surface 13 and the bottom surface of the light-shielding groove. It has been verified by experiments that when A is kept as an acute angle, a good shading effect can be achieved, and the stability of the overall structure of the side-emitting flat panel lamp can be maintained. Further, in order to obtain the best anti-bright edge effect, it has been verified through repeated experiments that when A is designed to be 40° to 90°, the anti-bright edge effect is the best. It should be noted that, although the embodiment of the present application defines the angle range of A to be 40° ⁇ 90°, in practical application, it is not limited to this angle range.
  • the upper surface of the first platform 11 may abut against the lower surface of the exit panel 2 .
  • the fixation of the exit panel 2 can be enhanced, thereby enhancing the stability of the overall structure of the lamp.
  • the main frame 1 of the above-mentioned side-emitting flat panel lamp may also be provided with reflective paper 5 and a back plate 7 .
  • the reflective paper 5 and the back plate 7 are sequentially stacked from the light guide plate 4 upward, and the back plate 7 is fixedly connected to the main frame 1 at the top of the main frame 1 .
  • the reflective paper 5 is laid on the upper surface of the light guide plate 4, so that the light entering the light guide plate 4 can be emitted from the lower surface of the light guide plate 4, thereby preventing the light from being emitted from the upper surface of the light guide plate 4.
  • the back plate 7 is fixedly connected with the main frame 1 at the top of the main frame 1, the space in the main frame 1 can be sealed, so that the illuminating panel and the light guide plate 4 , The reflective paper 5 is enclosed in the main frame 1, so that the above components can be formed into a complete whole, which helps to enhance the stability of the overall structure of the side-emitting flat panel lamp.
  • screws 8 can be used to connect the back plate 7 and the main frame 1 .
  • any method that can fixedly connect the back plate 7 and the main frame 1 can be used here, such as gluing, welding, etc., which is not specifically limited in this application.
  • the main body frame 1 can be made of aluminum, and the inclined light-shielding groove tooth structure 13 can be integrally formed on the main body frame 1 .
  • the main frame 1 can also be made of other materials, and the inclined light-shielding groove tooth structure 13 can also be formed and produced as an independent component fixedly connected to the bottom of the main frame 1 , which is not specifically limited in this application.
  • the side-emitting flat light shown in FIG. 1 includes the reflective paper 5 and the back plate 7
  • the reflective paper 5 and the back plate 7 are both optional components, and may not be used for special needs. Set the reflective paper 5 and the back plate 7.
  • the above-mentioned side-emitting flat panel light may further include a diffuser film 3 , and the diffuser film 3 may be laminated between the exit panel 2 and the light guide plate 4 .
  • the above-mentioned side-emitting flat panel light may further include a buffer cotton pad 6 .
  • the buffer cotton pad 6 can be stacked between the reflective paper 5 and the back plate 7 .
  • the side-emitting flat light shown in FIG. 1 includes the diffuser film 3 and the buffer cotton pad 6, it should be noted that the diffuser film 3 and the buffer cotton pad 6 are also optional components.
  • the diffusion film 3 is mainly used to meet the requirements of Unified Glare Rating (UGR for short) and reduce the UGR to a certain value. If there is no UGR requirement, the diffusion film 3 may not be provided.
  • the buffer cotton pad 6 is mainly used to make the installation of various components more compact and stable, and a downward pressure can be applied through the back plate 7 of the buffer cotton pad 6 to press the various components tightly in the main frame 1 . When the machining accuracy is high enough, it can also be considered that the buffer cotton pad 6 is no longer provided, and the back plate 7 can directly apply pressure to other components.
  • the exit panel 2 in the above-mentioned side-emitting flat panel lamp can use a prism plate or a diffuser plate.
  • the functions of the prism plate and the diffuser plate are similar, and both can diffuse the light injected into it more uniformly and then emit it, but only Not the same in principle.
  • prism plates or diffuser plates can be flexibly selected.
  • the profile 100 forming the bottom of the body frame 1 may further include a second platform 12 .
  • the height of the upper surface of the second platform 12 relative to the lower surface of the first platform 11 is not lower than the height of the bottom surface of the light-shielding groove relative to the lower surface of the first platform 11, that is, the lower surface of the first platform 11 is used as a reference surface
  • the bottom surface of the light-shielding groove can be flush with the upper surface of the second platform 12
  • the bottom surface of the light-shielding groove can also be lower than the upper surface of the second platform 12 .
  • the lower surface of the first platform 11 and the lower surface of the second platform 12 may be flush, and the lower surface of the first platform 11 may also protrude from the lower surface of the second platform 12 .
  • the side-emitting flat panel light can be connected with the T-shaped keel 14 without step difference when the T-shaped keel 14 is installed.
  • the T-shaped keel 14 here is the supporting structure of the lamp.
  • the upper surface of the second platform 12 may be provided with a plurality of raised structures, and the raised structures are raised portions upward from the upper surface of the second platform 12 .
  • two adjacent raised structures can form a screw slot, the opening position of the screw slot is formed with an oblique angle, and the inner wall of the screw slot is provided with an anti-slip tooth component.
  • the cleat assembly can be a tine or a groove.
  • the upper surface of the second platform 12 has a first protruding structure 121 , a second protruding structure 122 and a third protruding structure 123 , wherein the first protruding structure 121 and the
  • the second protruding structure 122 can form a screw slot, and the opening position of the screw slot is formed with an oblique angle, and the inner wall of the screw slot is provided with protruding teeth or grooves.
  • the bevel is formed at the opening position of the screw slot, which can facilitate the screw guide to slide in.
  • the protruding teeth or grooves are arranged, so that the screw 8 can have a certain anti-slip effect, thereby enhancing the structural stability of the side-emitting flat light.
  • the second platform 12 is a cavity structure with a hollow interior, and the protruding structure protrudes upward from the top surface of the cavity structure.
  • the second platform 12 of the cavity structure can strengthen the strength of the main body structure, so as to realize the enhancement of the strength of the overall structure of the lamp.
  • the present application provides such a side-emitting flat panel lamp, as shown in FIG. 1 , FIG. 2 , and FIG. 3 , in which the light source 10 is first installed on the light source board 9 , and then the light source board 9 is opposite to the light source.
  • One side is installed on the side of the main frame 1, and then the exit panel 2, the diffuser film 3 (not required without UGR), the light guide plate 4, the reflective paper 5, the buffer cotton pad 6, the back plate 7 in order up and down Install it into the main frame 1, then fix the above-mentioned parts such as the back plate 7 in the main frame 1 through screws 8, and finally fix the side-emitting flat light on the T-shaped keel 14.
  • the main frame 1 is formed by splicing a plurality of profiles 100.
  • the profiles 100 include a first platform 11 and a second platform 12.
  • the inner side of the first platform 11 is designed with at least one shading groove, and the inner wall of the shading groove facing the light source direction is formed.
  • reflective surface 13 When the light generating the bright edge is irradiated in the light-shielding groove, the reflective surface 13 can reflect the light entering the light-shielding groove multiple times, thereby reducing the light energy of the light, so that better anti-bright edge protection can be obtained. Effect. As shown in FIGS.

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

Abstract

一种侧发光平板灯，包括：主体框架（1）和设置在主体框架（1）内的光源板（9）、出射面板（2）和导光板（4），主体框架（1）的底部开设有出光口；出射面板（2）和导光板（4）从主体框架（1）的底部向上依次层叠设置；光源板（9）沿主体框架（1）的侧壁设置，光源板（9）上设置有光源（10），光源（10）发出的光线经由导光板（4）的侧面进入导光板（4），再经由导光板（4）的下表面进入出射面板（2），并从出光口射出；主体框架（1）由多根型材（100）拼接而成，并且形成主体框架（1）的底部的型材（100）包括第一平台（11）；第一平台（11）的上表面包括向光源（10）方向倾斜的反射面（13）。

Description

侧发光平板灯 技术领域
本申请涉及照明技术领域，特别是涉及一种侧发光平板灯。
背景技术
侧发光平板灯的入光侧亮边问题一直是侧发光平板灯设计要解决的一个重要问题，尤其是近年来市场对侧发光平板灯的边框要求越来越窄，而边框越窄，亮边问题越容易产生。
目前，防亮边方法主要有两种，一种是在出射面板入光方向的侧边及侧边下方粘贴吸光胶带或涂抹吸光油墨，目的在于吸收光源的一部分光线，避免这一部分光线在边框附近来回反射造成亮边，但这种方法在实际生产中较麻烦且不易控制，且会增加物料成本；另一种是在主体框架的底部设计一挡墙，虽然挡墙可以起到一定的防亮边作用，但这种挡墙只能遮挡住挡墙以内的光线，而对于挡墙以外的从导光板出来的杂散光则无法遮挡，不能获得更好的防亮边效果，此外，采用挡墙的设计，挡墙的位置需要靠近光源设置，否则会导致无法固定出射面板造成侧发光平板灯整体结构不稳定。
发明内容
本申请的一个目的是要提供一种侧发光平板灯以克服上述问题或者至少部分地解决上述问题。
本申请一个进一步的目的是要对侧发光平板灯的主体框架的结构进行改进，进而改善侧发光平板灯亮边问题。
本申请另一个进一步的目的是要通过对齿状结构进行一定的光学设计来满足吸光效果，从而获得更好的防亮边效果。
特别地，本申请提供了一种侧发光平板灯，包括：主体框架和设置在主体框架内的光源板、出射面板和导光板，其中，
主体框架的底部开设有出光口；
出射面板和导光板从主体框架的底部向上依次层叠设置；
光源板沿主体框架的侧壁设置，光源板上设置有光源，光源发出的光线经由导光板的侧面进入导光板，再经由导光板的下表面进入出射面板，并从出光口射出；
主体框架由多根型材拼接而成，并且形成主体框架的底部的型材包括第一平台，第一平台的上表面包括至少一个向光源方向倾斜的反射面。
可选地，第一平台的上表面开设有至少一个遮光凹槽；其中，
遮光凹槽的开口向光源方向倾斜；并且
遮光凹槽的朝向光源方向的内壁上形成反射面。
可选地，反射面与遮光凹槽的底面的夹角为40°～90°。
可选地，第一平台的上表面抵接于出射面板的下表面。
可选地，形成主体框架的底部的型材还包括第二平台；其中，
第二平台的上表面相对于第一平台的下表面的高度不低于遮光凹槽的底面相对于第一平台的下表面的高度。
可选地，第一平台的下表面与第二平台的下表面平齐；或
第一平台的下表面凸出于第二平台的下表面。
可选地，第二平台的上表面设置有多个凸起结构，凸起结构为从第二平台的上表面向上的凸起部分；其中，
两个相邻凸起结构形成螺丝槽，螺丝槽的开口位置形成有斜角，螺丝槽的内壁上设置有防滑牙组件。
可选地，第二平台为内部中空的腔体结构；并且
凸起结构从腔体结构的顶面向上凸起。
可选地，主体框架内还设置有反光纸和背板；其中，
反光纸和背板从导光板向上依次层叠设置，且背板在主体框架顶部与主体框架固定连接。
可选地，反光纸与背板之间还层叠设置有缓冲棉垫。
本申请提供的侧发光平板灯的主体框架由多跟型材拼接而成，并且型材包括第一平台，在第一平台的内侧设计有若干个向光源方向倾斜的反射面，向光源方向倾斜的反射面能够对照射到该反射面上的光线进行多次反射，进而降低光线的光能，有助于改善平板灯亮边的问题。采用本申请提供的技术方案能够使用更简单的方案有效解决平板灯亮边的问题，在降低物料成本的同时能够提高实际生产效率、改善亮边不良。
进一步地，本申请的反射面采用一定的光学设计，能够获得最佳的吸光效果，防亮边的效果更好。
根据下文结合附图对本申请具体实施例的详细描述，本领域技术人员将 会更加明了本申请的上述以及其他目的、优点和特征。
附图说明
通过阅读下文优选实施方式的详细描述，各种其他的优点和益处对于本领域普通技术人员将变得清楚明了。附图仅用于示出优选实施方式的目的，而并不认为是对本申请的限制。而且在整个附图中，用相同的参考符号表示相同的部件。在附图中：
图1是根据本申请一个实施例的侧发光平板灯的剖面结构示意图；
图2是图1所示的侧发光平板灯的主体框架的结构示意图；
图3是组成图2所示的主体框架的型材的结构示意图；
图4是根据本申请另一个实施例的侧发光平板灯的主体框架与T型龙骨安装时的剖面结构示意图。
图5是图4所示区域B的示意性局部放大视图；
图6是没有设置向光源方向倾斜的反射面的侧发光平板灯的部分组件的剖面结构示意图；
图7是根据本申请又一个实施例的侧发光平板灯的主体框架与T型龙骨安装时的剖面结构示意图。
具体实施方式
下面将参照附图更详细地描述本申请的示例性实施例。虽然附图中显示了本申请的示例性实施例，然而应当理解，可以以各种形式实现本申请而不应被这里阐述的实施例所限制。相反，提供这些实施例是为了能够更透彻地理解本申请，并且能够将本申请的范围完整的传达给本领域的技术人员。
需要说明的是，在不冲突的前体下，本申请各实施例中的技术特征可以相互结合。
图1是根据本申请一个实施例的侧发光平板灯的剖面结构示意图。如图1所示，根据本申请实施例的侧发光平板灯可以包括：主体框架1和设置在主体框架1内的光源板9、出射面板2和导光板4。其中，主体框架1的底部开设有出光口，出射面板2和导光板4从主体框架1的底部向上依次层叠设置，光源板9沿主体框架1的侧壁设置，光源板9上设置有光源10，光源10发出的光线经由导光板4的侧面进入导光板4，再经由导光板4的下表面进入出射面板2，并从出光口射出灯体以外，主体框架1由多根型材100拼 接而成，并且形成主体框架1的底部的型材100包括第一平台11，第一平台11的上表面包括至少一个向光源方向倾斜的反射面13。
本实施例提供了一种侧发光平板灯，多根型材100拼接成主体框架1，形成主体框架1底部的型材100包括第一平台11，第一平台11的上表面包括至少一个向光源方向倾斜的反射面13，向光源方向倾斜的反射面13能够起到多次反射光线的作用，光线经由反射面13多次反射后能够降低光能，从而能解决平板灯亮边的问题。使用本申请实施例提供的技术方案仅需在第一平台11的上表面设计向光源方向倾斜的反射面13就可以起到很好的防亮边效果，不再需要借助于吸光胶带或吸光油墨来解决亮边问题，操作简单且易于控制，从而能够在降低物料成本的同时提高实际生产效率、改善亮边不良。
图2是图1所示的侧发光平板灯的主体框架1的结构示意图，图3是组成图2所示的主体框架1的型材100的结构示意图。如图2和图3所示，主体框架1可以由四根截面相同的型材100拼接而成。
参见图1所示，在一实施例中，出光口位于主体框架1的底部，并在第一平台11远离光源板9的一侧，主体框架1的底部从出光口到设置有光源板9的主体框架1的侧壁之间的区域内的第一平台11的上表面可以包括多个向光源方向倾斜的反射面13，由此能够反射光线的区域更大，防亮边的效果更好。其中反射面13可以按照相同间隔均匀分布在第一平台11的内侧(即，第一平台11朝向出射面板2的一侧)，也可以按照不同间隔布设反射面13，本申请对此亦不作具体限定。
下面以发光二极管(LED)光源10为例说明光源的光线入射至导光板4以及从导光板4出射的情况。
假设光源板9上设置的光源10为发光二极管(LED)，由于导光板4为侧入光的光学元件，因而，LED发出的光可以从导光板4的侧面进入导光板4内部，其入射到导光板4内部的光线在导光板4内部能够满足光密到光疏，入射角大于临界角的条件，从而入射到导光板4内部的光线在导光板4内部能够以全反射的方式进行传播，导光板4上同时会按照一定的设计分布有出光网点，网点处会破坏全反射条件而使光线再从导光板4射出。
图4是根据本申请另一个实施例的侧发光平板灯的主体框架与T型龙骨安装时的剖面结构示意图，图5是图4所示区域B的示意性局部放大视图， 图6是没有设置向光源方向倾斜的反射面13的侧发光平板灯的部分组件的剖面结构示意图。如图4至图6所示，LED发出的光线并不会全部从导光板4的侧面进入导光板4内部，会存在一部分的光线，该部分的光线的光线方向会朝着LED斜前方的一定范围内出射，例如光线方向朝着LED斜前方的40°～60°范围内出射，当主体框架1的底部没有设置向光源方向倾斜的反射面13时，这部分光线就会在主体框架1的底部直接反射出去，此时的光能较强，从而在侧发光平板灯入光方向的一侧产生亮边。此外，从导光板4的侧面进入导光板4内部的光线，当再次从导光板4射出时，从导光板4射出的出射光中会存在一部分出射光无法直接从出光口传播到灯体以外，而是在主体框架1附近来回多次反射造成了侧发光平板灯入光方向的一侧的亮边，因而，这部分出射光也是产生亮边的诱因。针对上述情况，解决亮边的重要思想在于将产生亮边的光吸收，从而实现防亮边的目的。
通过实验发现，在主体框架1的底部设置挡墙可以起到一定的遮光效果，挡墙为在主体框架1的底部向上的凸起，为了灯具整体结构的稳定性，其需要设置在靠近光源10的位置，挡墙可以遮挡该挡墙以内的光线，即落在挡墙的靠近光源板9的一侧至光源板9之间的光线，而对于挡墙以外的从导光板4出来的杂散光则完全无法遮挡，这样一来，虽然可以起到防亮边的作用，但会存在防亮边的效果不佳的问题。而为了获得更好的防亮边的效果，本领域技术人员通常想到可以将挡墙设置在远离光源10的位置，以便能够遮挡一部分从导光板4出来的杂散光，从而改善防亮边的效果，但是采用这种方法将会导致无法固定出射面板2，从而造成灯具整体结构不稳定。
本申请发明人通过大量实验获得，如图5所示，可以在第一平台11的上表面开设至少一个遮光凹槽。其中，遮光凹槽的开口方向朝向光源方向倾斜，遮光凹槽具有朝向光源方向的内壁和背离光源方向的内壁，遮光凹槽朝向光源方向的内壁上形成反射面13，产生亮边的光在遮光凹槽内经过反射面13多次反射后，光能会降低，从而起到有效改善防亮边的效果。
图7是根据本申请又一个实施例的侧发光平板灯的主体框架与T型龙骨安装时的剖面结构示意图。参见图7所示，在该实施例中，可以将反射面13与遮光凹槽的底面的夹角记作A。通过实验验证，当保持A为锐角时，即可起到很好的遮挡效果，又能够保持侧发光平板灯整体结构的稳定性。进一步，为了获得最佳的防亮边效果，通过反复的实验验证，当A设计为40°～90° 时，防亮边效果最佳。需要说明的是，尽管本申请实施例限定出了A的角度范围为40°～90°，但在实际应用时，并不局限于此角度范围。
在一些实施例中，如图1所示，第一平台11的上表面可抵接于出射面板2的下表面。通过将第一平台11的上表面抵接于出射面板2的下表面可以加强出射面板2的固定，从而增强灯具整体结构的稳定性。
为了获得更好的照明效果以及灯具整体结构的稳定性，如图1所示，上述侧发光平板灯的主体框架1内还可以设置有反光纸5和背板7。其中，反光纸5和背板7从导光板4向上依次层叠设置，且背板7在主体框架1顶部与主体框架1固定连接。该实施例中，一方面，在导光板4的上表面铺设有反光纸5，可以使进入导光板4的光线都从导光板4的下表面射出，进而避免光线从导光板4的上表面射出，从而可以获得更好的照明效果，另一方面，由于背板7在主体框架1的顶部与主体框架1固定连接，因而可以将主体框架1内的空间封闭起来，使得射面板、导光板4、反光纸5封闭在主体框架1内，从而可以使上述各个部件形成一个完整的整体，有助于增强侧发光平板灯的整体结构的稳定性。
在具体实施过程中，如图1所示，可以采用螺丝8来连接背板7与主体框架1。当然，任何可以固定连接背板7与主体框架1的方式都可以用在此处，例如胶接、焊接等，本申请不做具体限定。
另外，在具体实施过程中，主体框架1可以采用铝制，而倾斜的遮光凹槽齿状结构13可以一体成型在主体框架1上。当然，主体框架1也可以采用其他材料制作，倾斜的遮光凹槽齿状结构13也可以通过固定连接在主体框架1的底部的作为独立的部件形成制作，本申请不做具体限定。
需要说明的是，尽管图1所示的侧发光平板灯中包含了反光纸5和背板7，但是反光纸5和背板7都属于可选的部件，出于特殊的需求，也可以不设置反光纸5和背板7。
在一可选实施例中，如图1所示，上述侧发光平板灯还可以进一步包括扩散膜3，扩散膜3可层叠设置在出射面板2与导光板4之间。
进一步地，如图1所示，上述侧发光平板灯还可以进一步包括缓存棉垫6。缓存棉垫6可层叠设置在反光纸5与背板7之间。
尽管图1所示的侧发光平板灯中包含了扩散膜3和缓存棉垫6，但是需要说明的是，扩散膜3和缓存棉垫6也都属于可选的部件。扩散膜3主要是 为了满足统一眩光值(Unified Glare Rating，简称UGR)的要求，使UGR降低到一定的数值，如果没有UGR的要求，则可以不设置扩散膜3。缓存棉垫6主要是用于使各个部件的安装更加的紧密和稳固，通过缓存棉垫6背板7可以施加一个向下的压力，从而将各个部件紧压在主体框架1中。当加工精度够高时，也可以考虑不再设置缓存棉垫6，背板7可以直接向其它部件施加压力。
在具体实施时，上述侧发光平板灯中的出射面板2可以采用棱镜板或扩散板，棱镜板和扩散板实现的功能类似，都可以将射入其中的光扩散的更为均匀再射出，只是在原理上不大相同。考虑到不同的应用场景和设计需求，可以灵活的选用棱镜板或扩散板。
如图5至图7所示，形成主体框架1的底部的型材100还可以包括第二平台12。其中第二平台12的上表面相对于第一平台11的下表面的高度不低于遮光凹槽的底面相对于第一平台11的下表面的高度，即将第一平台11的下表面作为参考面，遮光凹槽的底面可以与第二平台12的上表面平齐，遮光凹槽的底面也可以低于第二平台12的上表面。
此外，第一平台11的下表面与第二平台12的下表面可以平齐，第一平台11的下表面也可以凸出于第二平台12的下表面。通过设计第一平台11的下表面凸出于第二平台12的下表面，使得侧发光平板灯在进行T型龙骨14安装时能够与T型龙骨14无段差衔接。这里的T型龙骨14为灯具的支撑结构。
在一实施例中，第二平台12的上表面可以设置有多个凸起结构，凸起结构为从第二平台12的上表面向上的凸起部分。其中，两个相邻的凸起结构可以形成一螺丝槽，该螺丝槽的开口位置形成有斜角，螺丝槽的内壁上设置有防滑牙组件。防滑牙组件可以是凸齿或凹槽。
参见图1、图5至图7所示，第二平台12的上表面具有第一凸起结构121、第二凸起结构122和第三凸起结构123，其中，第一凸起结构121和第二凸起结构122可形成螺丝槽，并且螺丝槽的开口位置形成有斜角，螺丝槽的内壁上设置有凸齿或凹槽。在螺丝槽的开口位置形成斜角，可以方便螺丝导向滑入。而在螺丝槽的内壁上设置凸齿或凹槽，则对于螺丝8能起到一定的防滑牙的效果，从而加强侧发光平板灯的结构稳定性。
为了灯具整体结构的强度，优选的，第二平台12为内部中空的腔体结构，并且凸起结构从腔体结构的顶面向上凸起。腔体结构的第二平台12可以加强主体结构的强度，从而实现灯具整体结构的强度的增强。
基于上述记载可知，本申请提供了这样一种侧发光平板灯，如图1、图2、图3所示，其先将光源10安装如光源板9上，然后将光源板9相背于光源的一侧安装到主体框架1的侧面上，然后按上下顺序依次把出射面板2、扩散膜3(没UGR要求即可不用)、导光板4、反光纸5、缓存棉垫6、背板7装入主体框架1内，然后通过螺丝8把背板7等上面提到的几个零件固定在主体框架1内，最后将侧发光平板灯固定在T型龙骨14上。
主体框架1由多根型材100拼接而成，型材100包括第一平台11和第二平台12，第一平台11的内侧设计有至少一个遮光凹槽，遮光凹槽朝向光源方向的内壁上形成有反射面13。当产生亮边的光照射在遮光凹槽内时，反射面13能够对进入遮光凹槽内的光线进行多次反射，进而将该光线的光能降低，从而能够获得更好的防亮边的效果。如图5至图7所示，在将反射面13与遮光凹槽的底面的夹角A设计为锐角时，即可起到很好的遮挡效果，又能够保持侧发光平板灯整体结构的稳定性。
综上所述，采用本申请提供的技术方案能够使用更简单的方案解决平板灯亮边的问题，在降低物料成本的同时能够提高实际生产效率、改善亮边不良。
至此，本领域技术人员应认识到，虽然本文已详尽示出和描述了本申请的多个示例性实施例，但是，在不脱离本申请精神和范围的情况下，仍可根据本申请公开的内容直接确定或推导出符合本申请原理的许多其他变型或修改。因此，本申请的范围应被理解和认定为覆盖了所有这些其他变型或修改。

Claims (10)

  1. 一种侧发光平板灯，包括：主体框架和设置在主体框架内的光源板、出射面板和导光板，其中，
    所述主体框架的底部开设有出光口；
    所述出射面板和所述导光板从所述主体框架的底部向上依次层叠设置；
    所述光源板沿所述主体框架的侧壁设置，所述光源板上设置有光源，所述光源发出的光线经由所述导光板的侧面进入所述导光板，再经由所述导光板的下表面进入所述出射面板，并从所述出光口射出；
    所述主体框架由多根型材拼接而成，并且形成所述主体框架的底部的型材包括第一平台，所述第一平台的上表面包括至少一个向所述光源方向倾斜的反射面。
  2. 根据权利要求1所述的侧发光平板灯，其中，所述第一平台的上表面开设有至少一个遮光凹槽；其中，
    所述遮光凹槽的开口向所述光源方向倾斜；并且
    所述遮光凹槽的朝向所述光源方向的内壁上形成所述反射面。
  3. 根据权利要求2所述的侧发光平板灯，其中，所述反射面与所述遮光凹槽的底面的夹角为40°～90°。
  4. 根据权利要求1-3中任一项所述的侧发光平板灯，其中，所述第一平台的上表面抵接于所述出射面板的下表面。
  5. 根据权利要求2或3中所述的侧发光平板灯，其中，所述形成所述主体框架的底部的型材还包括第二平台；其中，
    所述第二平台的上表面相对于所述第一平台的下表面的高度不低于所述遮光凹槽的底面相对于所述第一平台的下表面的高度。
  6. 根据权利要求5所述的侧发光平板灯，其中，
    所述第一平台的下表面与所述第二平台的下表面平齐；或
    所述第一平台的下表面凸出于所述第二平台的下表面。
  7. 根据权利要求6所述的侧发光平板灯，其中，
    所述第二平台的上表面设置有多个凸起结构，所述凸起结构为从所述第二平台的上表面向上的凸起部分；其中，
    两个相邻所述凸起结构形成螺丝槽，所述螺丝槽的开口位置形成有斜角，所述螺丝槽的内壁上设置有防滑牙组件。
  8. 根据权利要求7所述的侧发光平板灯，其中，
    所述第二平台为内部中空的腔体结构；并且
    所述凸起结构从所述腔体结构的顶面向上凸起。
  9. 根据权利要求1-3中任一项所述的侧发光平板灯，其中，所述主体框架内还设置有反光纸和背板；其中，
    所述反光纸和背板从所述导光板向上依次层叠设置，且所述背板在所述主体框架顶部与所述主体框架固定连接。
  10. 根据权利要求9所述的侧发光平板灯，其中，所述反光纸与所述背板之间还层叠设置有缓冲棉垫。
PCT/CN2021/104318 2020-07-03 2021-07-02 侧发光平板灯 Ceased WO2022002264A1 (zh)

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