WO2020024223A1 - 灯罩结构及灯具 - Google Patents

灯罩结构及灯具 Download PDF

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Publication number
WO2020024223A1
WO2020024223A1 PCT/CN2018/098341 CN2018098341W WO2020024223A1 WO 2020024223 A1 WO2020024223 A1 WO 2020024223A1 CN 2018098341 W CN2018098341 W CN 2018098341W WO 2020024223 A1 WO2020024223 A1 WO 2020024223A1
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WO
WIPO (PCT)
Prior art keywords
light
light guide
guide plate
annular
lampshade
Prior art date
Application number
PCT/CN2018/098341
Other languages
English (en)
French (fr)
Inventor
张正昂
黄国豪
Original Assignee
瑞仪(广州)光电子器件有限公司
瑞仪光电股份有限公司
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
Application filed by 瑞仪(广州)光电子器件有限公司, 瑞仪光电股份有限公司 filed Critical 瑞仪(广州)光电子器件有限公司
Priority to CN201880005240.7A priority Critical patent/CN111630316B/zh
Priority to PCT/CN2018/098341 priority patent/WO2020024223A1/zh
Priority to EP18928541.4A priority patent/EP3832197B1/en
Priority to TW107131188A priority patent/TWI674378B/zh
Priority to US16/701,174 priority patent/US10914450B2/en
Publication of WO2020024223A1 publication Critical patent/WO2020024223A1/zh

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Classifications

    • 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
    • F21V3/02—Globes; Bowls; Cover glasses characterised by the shape
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0033—Means for improving the coupling-out of light from the light guide
    • G02B6/005—Means for improving the coupling-out of light from the light guide provided by one optical element, or plurality thereof, placed on the light output side of the light guide
    • G02B6/0051—Diffusing sheet or layer
    • 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
    • F21S8/03—Lighting devices intended for fixed installation of surface-mounted type
    • F21S8/033—Lighting devices intended for fixed installation of surface-mounted type the surface being a wall or like vertical structure, e.g. building facade
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S8/00—Lighting devices intended for fixed installation
    • F21S8/04—Lighting devices intended for fixed installation intended only for mounting on a ceiling or the like overhead structures
    • F21S8/06—Lighting devices intended for fixed installation intended only for mounting on a ceiling or the like overhead structures by suspension
    • F21S8/061—Lighting devices intended for fixed installation intended only for mounting on a ceiling or the like overhead structures by suspension with a non-rigid pendant, i.e. a cable, wire or chain
    • 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
    • F21V1/00—Shades for light sources, i.e. lampshades for table, floor, wall or ceiling lamps
    • F21V1/14—Covers for frames; Frameless shades
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0033—Means for improving the coupling-out of light from the light guide
    • G02B6/005—Means for improving the coupling-out of light from the light guide provided by one optical element, or plurality thereof, placed on the light output side of the light guide
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2103/00—Elongate light sources, e.g. fluorescent tubes
    • F21Y2103/30—Elongate light sources, e.g. fluorescent tubes curved
    • F21Y2103/33—Elongate light sources, e.g. fluorescent tubes curved annular
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0033—Means for improving the coupling-out of light from the light guide
    • G02B6/0035—Means for improving the coupling-out of light from the light guide provided on the surface of the light guide or in the bulk of it
    • G02B6/0045—Means for improving the coupling-out of light from the light guide provided on the surface of the light guide or in the bulk of it by shaping at least a portion of the light guide

Definitions

  • the invention relates to a lampshade structure and application thereof, and in particular to a lampshade structure capable of changing a light path and producing a special visual effect, and a lamp using the same.
  • lamps are provided with a lamp cover on the outer cover of the light source.
  • the combination of different light sources and the lamp cover can provide consumers with multiple choices.
  • the current lampshade designs mostly print different patterns or colors on the outer surface, which will result in the inability to effectively utilize the light provided by the light source.
  • an object of the present invention is to provide a lampshade structure and its application to a lamp, wherein the lampshade structure can be designed to produce a low-glare and beautiful appearance visual effect.
  • the lampshade structure includes a body and a plurality of light guiding structures.
  • the body has a concave surface and an outer surface opposite to the concave surface.
  • the light guide structure is disposed on the inner concave surface and / or the outer surface.
  • Each of the light guide structures has a center thickness and a peripheral thickness, and the center thickness is smaller than the peripheral thickness.
  • each light guide structure is disposed on the outer surface, and each light guide structure is a recessed structure, and each recessed structure is recessed from the outer surface to the inward concave surface.
  • the above light guiding structures are disposed on the inner concave surface, and each light guiding structure is a concave structure, and each concave structure is recessed from the inner concave surface to the outer surface.
  • the lamp includes a light guide plate, a light source, and the aforementioned lampshade structure.
  • the light guide plate has a light entrance surface and a light exit surface.
  • the light source is adjacent to the light incident surface.
  • the lampshade structure covers the light guide plate.
  • the light guide plate has a ring structure, and the ring structure has an inner ring surface, a first ring surface, and a second ring surface.
  • the first ring surface and the second ring surface are connected to the inner ring surface. Opposite sides.
  • the above-mentioned inner annular surface is a light incident surface, and at least one of the first annular surface and the second annular surface is a light emitting surface.
  • the above-mentioned inner annular surface is a light incident surface, and an optical coating is provided on a surface of at least one of the first annular surface and the second annular surface.
  • the inner ring surface is a light incident surface
  • the ring structure further includes an outer ring surface opposite to the inner ring surface, wherein an optical coating is provided on the outer ring surface.
  • the inner ring surface is a light incident surface
  • the ring structure further includes an outer ring surface opposite to the inner ring surface, wherein the outer ring surface is an inclined surface
  • the ring structure further includes an outer ring surface opposite to the inner ring surface, and a light mixing distance is provided between a periphery of the lampshade structure and the outer ring surface.
  • the above-mentioned lamp further includes a fixing base.
  • the light guide plate, the light source and the lampshade structure are arranged on a fixed base.
  • the above-mentioned fixing seat includes a first casing, a second casing, and a support shaft.
  • the second casing is connected to the first casing and forms an accommodating space together with the first casing.
  • the light source and a part of the light guide plate near the light incident surface are disposed in the accommodating space.
  • the support shaft is disposed on the first housing, and the lampshade structure is disposed on the support shaft to cover the light guide plate and form a distance from the light guide plate.
  • the support shaft has a first end and a second end opposite to each other, the first end is connected to the first housing, and the second end is provided with a flange.
  • the lampshade structure is sleeved on the second end and abuts the flange, wherein the second end is provided with an end cap, and the end cap is configured to fix the lampshade structure.
  • the above-mentioned fixing base further includes a base body, and the base body is connected to and supports the second housing.
  • the support shaft and the end cover are hollow structures, and the hollow structure is configured to accommodate one end of an electric wire, and the other end of the electric wire is connected to the base of the fixing base.
  • the lampshade structure of the present invention has a plurality of light guide structures, and each light guide structure can form a different thickness on the body of the lampshade structure. Therefore, the difference in light absorption and transmittance of different thicknesses of the body can cause the light to produce a gradation of light and shades and different light source colors when passing through the lampshade structure. Moreover, with different viewing angles of the viewer, the visual effects presented by the lampshade structure are also different. In addition, when light passes through the light guide structure, the light guide structure can change the direction of travel of the light, thereby avoiding glare.
  • FIG. 1 is a schematic diagram showing a device of a lamp according to a first embodiment of the present invention
  • FIG. 2 is a partial cross-sectional view illustrating a lamp according to a first embodiment of the present invention
  • FIG. 3 is a front view illustrating a light guide plate according to an embodiment of the present invention.
  • FIG. 4 is a schematic diagram illustrating light traveling in a light guide plate according to an embodiment of the present invention.
  • 5A is a photo of a lamp without a lampshade structure when the lamp is turned on;
  • 5B is a photograph of a lamp using a lampshade structure of equal thickness design when the lamp is turned on;
  • 5C is a photo when the lamp using the lampshade structure of the first embodiment of the present invention is turned on;
  • 5D is a photo when the lamp using the lampshade structure of the first embodiment of the present invention is turned off;
  • FIG. 6 is a schematic diagram showing a device of a lamp according to a second embodiment of the present invention.
  • FIG. 7 is a partial cross-sectional view illustrating a lamp according to a second embodiment of the present invention.
  • FIG. 8A is a photo when the lamp without the lampshade structure is turned on
  • 8B is a photograph of a lamp using a lampshade structure of equal thickness design when the lamp is turned on;
  • 8C is a photograph of a lamp using a lampshade structure according to a second embodiment of the present invention when the lamp is turned on;
  • 8D is a photograph of a lamp using a lampshade structure according to a second embodiment of the present invention when the lamp is turned off;
  • FIG. 9 is a schematic diagram showing an apparatus of a lamp according to a third embodiment of the present invention.
  • FIG. 1 and FIG. 2 are respectively a schematic diagram and a partial cross-sectional view of a device according to the first embodiment of the present invention.
  • the lamp 200 of this embodiment mainly includes a light guide plate 210, a light source 220, a lampshade structure 100, and a fixing base 230.
  • the light guide plate 210, the light source 220, and the lamp cover structure 100 are disposed on the fixing base 230.
  • the light source 220 is mainly used to provide light to the light guide plate 210.
  • the lampshade structure 100 covers the light guide plate 210 and can refract and diffuse the light emitted from the light guide plate 210 to produce a special optical effect.
  • the fixing base 230 includes a first housing 231, a second housing 232, a support shaft 233, and a base 234.
  • the first casing 231 is connected to the second casing 232, and the first casing 231 and the second casing 232 together form an accommodation space 231a.
  • Both the light source 220 and the light guide plate 210 are ring-shaped structures, and a part of the light source 220 and the light guide plate 210 close to the light incident surface 211 is disposed in the accommodation space 231a.
  • the support shaft 233 has a first end and a second end opposite to each other. The first end is disposed on the first housing 231 and the second end is provided with a flange 233a.
  • the lampshade structure 100 is sleeved on the second end of the support shaft 233 and abuts the flange 233 a to cover the light guide plate 210.
  • the second end of the support shaft 233 is provided with an end cover 235 configured to fix the lampshade structure 100.
  • the support shaft 233 and the end cover 235 are hollow structures.
  • One end of the electric wire 236 can be passed through and fixed in the support shaft 233 and the end cover 235, and the other end of the electric wire 236 extends out of the support shaft 233 and the end cover.
  • 235 ⁇ and connected to the base 234.
  • the lamp 200 is in the form of a chandelier, and the base 234 can be connected to the ceiling or other default positions.
  • FIG. 3 is a front view illustrating a light guide plate according to an embodiment of the present invention
  • FIG. 4 is a schematic view illustrating light traveling in the light guide plate according to an embodiment of the present invention
  • the light guide plate 210 includes an inner annular surface 211, an outer annular surface 212, a first annular surface 213, and a second annular surface 214.
  • the inner ring surface 211 of the light guide plate 210 is a light incident surface
  • the light source 220 is adjacent to the inner ring surface 211 of the light guide plate 210.
  • an optical coating 214a is provided on the second annular surface 214.
  • the optical coating 214 a is mainly used to destroy the total reflection of light, so that the light is emitted from the first annular surface 213.
  • the light for example, light L1
  • the light L1 provided by the light source 220 is reflected when it strikes the position of the second annular surface 214 where the optical coating 214 a is not provided.
  • Most of the light (for example, light L2) toward the optical coating 214a will be reflected by the optical coating 214a and exit from the first annular surface 213 (for example, light L3), and a small part will diffuse through the optical coating 214 and diffuse ( For example, light L4).
  • the portion provided with the optical coating layer 214a looks bright, so the optical coating layer 214a can be patterned on the surface of the light guide plate 210 to make the light guide plate 210 different Design, and can further produce different optical effects.
  • the optical coating layer 214 a may also be disposed on the first annular surface 213.
  • the outer annular surface 212 of the light guide plate 210 may be designed as an inclined surface. In this embodiment, an acute angle is formed between the outer annular surface 212 and the first annular surface 213. Thereby, after the light is radiated to the outer annular surface 212, the light can be emitted toward the first annular surface 213 opposite to the outer annular surface 212. In other embodiments, the outer annular surface 212 may form an acute angle with the second annular surface 214 to change the direction of light reflection. Similarly, the outer ring surface 212 may also be provided with an optical coating layer 212 a to change the light output effect of the light guide plate 210. As shown in FIG.
  • an outer ring surface 212 of the light guide plate 210 and a peripheral edge of the lamp cover structure 100 form a light mixing distance D1. Therefore, the light diffused from the outer torus 212 can produce a halo visual effect under the action of the lampshade structure 100.
  • the lampshade structure 100 mainly includes a main body 110 and a plurality of light guiding structures 120.
  • the main body 110 has an inner concave surface 111 and an outer surface 112 opposite to the inner concave surface 111.
  • the light guide structure 120 is disposed on the outer surface 112, and the inner concave surface 111 is a smooth surface.
  • Each light guiding structure 120 is recessed from the outer surface 112 toward the inner concave surface 111.
  • each light guiding structure 120 has a central thickness T1 and a peripheral thickness T2, and the central thickness T1 is smaller than the peripheral thickness T2. Therefore, the difference in the degree of light absorption and transmittance of different thicknesses of the body 110 can cause different optical effects when the light passes through the lamp cover structure 100.
  • the position of the body 110 of the lampshade structure 100 near the center of the light guide structure 120 has a smaller thickness
  • the position of the body 110 near the periphery of the light guide structure 120 has a larger thickness
  • the portion of the body 110 having a smaller thickness has a higher light transmittance and a smaller energy absorption rate
  • the portion of the body 110 having a larger thickness has a lower light transmittance and a higher energy Absorption rate. Therefore, when light rays from different directions pass through different positions of the lampshade structure 100, the traveling direction and intensity of the light rays are changed, thereby forming a special optical effect.
  • FIG. 5A is a photo when the lamp without the lampshade structure is turned on
  • FIG. 5B is a photo when the lamp with the lampshade structure of the same thickness is designed to be turned on.
  • 5D is a photo when the lamp with the lampshade structure of the first embodiment of the present invention is turned off.
  • FIG. 5D is a photo when the lamp with the lampshade structure of the first embodiment of the present invention is turned off.
  • FIG. 5A when the lampshade structure is not used, only the light-emitting state of the light guide plate itself and the optical coating pattern provided on the light guide plate can be seen.
  • FIG. 5B after using a lampshade structure of equal thickness, although slight light and shadow changes can be produced, the overall light and shadow performance and texture are relatively monotonous, and light will still produce glare after passing through a lampshade structure of equal thickness.
  • the lampshade structures of different thicknesses can refract, absorb or diffuse part of the light, in addition to avoiding glare, it can also form a light gradient.
  • Visual effects In addition, depending on the thickness of the lampshade structure, the visual color produced will be different.
  • the light generated by the yellow light source can form a dark yellow on the surface of the lampshade after passing through the light guide plate and emitted from the lampshade structure. And light yellow light and shadow changes. As shown in FIG.
  • the lamp covers of different thicknesses can also refract a small part of the natural light to highlight the three-dimensional texture of the lamp cover structure itself.
  • the lampshade structure may be made of glass to improve the transparency and texture of the lampshade structure.
  • FIG. 6 and FIG. 7 are respectively a schematic diagram and a partial cross-sectional view of a device according to a second embodiment of the present invention.
  • the lamp 400 in this embodiment mainly includes a light guide plate 410, a light source 420, a lampshade structure 300, and a fixing base 430.
  • the light guide plate 410, the light source 420, and the lamp cover structure 300 are disposed on the fixing base 430.
  • the fixing base 430 includes a first housing 431, a second housing 432, a support shaft 433, and a base 434.
  • the first casing 431 is connected to the second casing 432, and the first casing 431 and the second casing 432 together form an accommodation space 431a.
  • Both the light source 420 and the light guide plate 410 are annular structures, and a portion of the light source 420 and the light guide plate 410 near the light incident surface 411 is disposed in the accommodation space 431a.
  • the supporting shaft 433 has a first end and a second end opposite to each other, wherein the first end is disposed on the first housing 431 and the second end is provided with a flange 433a.
  • the lampshade structure 300 is sleeved on the second end of the support shaft 433 and abuts the flange 433a to cover the light guide plate 410.
  • the second end of the support shaft 433 is provided with an end cover 435 configured to fix the lampshade structure 300.
  • the lamp 400 is in the form of a wall lamp, the second housing 432 is directly fixed on the base 434, and the base 434 can be fixed on the wall or other default positions.
  • the design of the light guide plate 410 is the same as the design of the light guide plate 210 shown in FIG. 2 to FIG. 4 described above, so it will not be repeated here.
  • the lampshade structure 300 mainly includes a main body 310 and a plurality of light guiding structures 320.
  • the body 310 has an inner concave surface 311 and an outer surface 312 opposite to the inner concave surface 311.
  • the light guide structure 320 is disposed on the outer surface 312, and the inner concave surface 311 is a smooth surface.
  • Each light guiding structure 320 is recessed from the outer surface 312 toward the inner concave surface 311.
  • each light guide structure 320 has a central thickness T3 and a peripheral thickness T4, and the central thickness T3 is smaller than the peripheral thickness T4. Therefore, the difference in the degree of light absorption and the transmittance of the light through different thicknesses of the body 310 can cause different optical effects when the light passes through the lampshade structure 300.
  • FIG. 8A is a photo when the lamp without the lampshade structure is turned on
  • FIG. 8B is a photo when the lamp with the lampshade structure of the same thickness design is turned on
  • FIG. 8D is a photo of the lamp with the lampshade structure of the second embodiment when the lamp is off.
  • FIG. 8A when the lampshade structure is not used, only the light-emitting state of the light guide plate itself and the optical coating pattern provided on the light guide plate can be seen.
  • FIG. 8B after using a lampshade structure of equal thickness, although slight light and shadow changes can be produced, the overall light and shadow performance and texture are relatively monotonous, and light will still produce glare after passing through the lampshade structure of equal thickness.
  • the lampshade structure of unequal thickness can refract, absorb or diffuse part of the light, in addition to avoiding glare, it can also form a light gradient.
  • Visual effects In addition, depending on the thickness of the lampshade structure, the visual color produced will be different.
  • the light generated by the yellow light source can form a dark yellow on the surface of the lampshade after passing through the light guide plate and emitted from the lampshade structure. And light yellow light and shadow changes.
  • FIG. 8D when the lights are turned off, the lamp covers of different thicknesses can also refract a small part of the natural light to highlight the three-dimensional texture of the lamp cover structure itself.
  • FIG. 9 is a schematic diagram illustrating a device of a lamp according to a third embodiment of the present invention.
  • the structure of the lamp 600 of this embodiment is substantially the same as the lamp 400 shown in FIG. 7, and the difference is only that the lamp cover structure 500 of the lamp 600 has a different design.
  • the lampshade structure 500 mainly includes a body 510 and a plurality of light guiding structures 520.
  • the body 510 has an inner concave surface 511 and an outer surface 512 opposite to the inner concave surface 511.
  • the light guide structure 520 is disposed on the inner concave surface 511, and the outer surface 512 is a smooth surface.
  • each of the light guiding structures 520 is a recessed structure, and is recessed from the inner concave surface 511 toward the outer surface 512. Moreover, each light guiding structure 520 has a central thickness T5 and a peripheral thickness T6, and the central thickness T5 is smaller than the peripheral thickness T6. Therefore, the difference in the degree of light absorption and transmittance of different thicknesses of the body 510 can cause different optical effects when the light passes through the lampshade structure 500.
  • the lampshade structure of the present invention has a plurality of light-guiding structures, and each of the light-guiding structures can form a different thickness on the body of the lampshade structure. Therefore, the difference in the degree of light absorption and transmittance of different thicknesses of the body can cause the light to produce a gradation of light and shadow and different light source colors when passing through the lampshade structure. Moreover, with different viewing angles of the viewer, the visual effects presented by the lampshade structure are also different. In addition, when light passes through the light guide structure, the light guide structure can change the direction of travel of the light, thereby avoiding glare.

Abstract

一种灯罩结构及灯具。灯罩结构包含本体（110）以及多个导光结构（120）。本体（110）具有内凹面（111）以及与内凹面（111）相对的外表面（112）。导光结构（120）设置在内凹面（111）及/或外表面（112）上。每个导光结构（120）具有中心厚度（T1）以及周缘厚度（T2），且中心厚度（T1）小于周缘厚度（T2）。

Description

灯罩结构及灯具 技术领域
本发明涉及一种灯罩结构及其应用，且特别涉及一种可改变光线路径并产生特殊视觉效果的灯罩结构及使用此灯罩结构的灯具。
背景技术
应市场的需求，灯具的变化越来越多元。一些灯具在发光源外侧罩设置灯罩，不同的发光源与灯罩的搭配可为消费者提供多元的选择。然而，目前的灯罩设计大多会在外表面上印刷不同的图案或颜色，这会导致无法有效地利用光源所提供的光线。
发明内容
因此，本发明的目的在于提供一种灯罩结构及其在灯具上的应用，其中通过灯罩结构的设计，可使灯具产生低眩光以及外型美观的视觉效果。
根据本发明的上述目的，提出一种灯罩结构。此灯罩结构包含本体以及多个导光结构。本体具有内凹面以及与内凹面相对的外表面。导光结构设置在内凹面及/或外表面上。其中，每一个导光结构具有中心厚度以及周缘厚度，且中心厚度小于周缘厚度。
依据本发明的实施例，上述的导光结构设置在外表面上，且每一个导光结构为凹陷结构，每一个凹陷结构从外表面向内凹面凹陷。
依据本发明的实施例，上述的导光结构设置在内凹面上，且每一个导光结构为凹陷结构，每一个凹陷结构从内凹面向外表面凹陷。
根据本发明的上述目的，提出一种灯具。此灯具包含导光板、光源以及前述的灯罩结构。导光板具有入光面以及出光面。光源邻设于入光面。灯罩结构覆盖导光板。
依据本发明的实施例，上述的导光板为环状结构，环状结构具有内环 面、第一环形表面以及第二环形表面，其中第一环形表面与第二环形表面连接于内环面的相对两侧。
依据本发明的实施例，上述的内环面为入光面，且第一环形表面与第二环形表面中的至少一者为出光面。
依据本发明的实施例，上述的内环面为入光面，且第一环形表面与第二环形表面中的至少一者的表面设有光学涂层。
依据本发明的实施例，上述的内环面为入光面，且环状结构还包含与内环面相对的外环面，其中外环面上设有光学涂层。
依据本发明的实施例，上述的内环面为入光面，且环状结构还包含与内环面相对的外环面，其中外环面为斜面。
依据本发明的实施例，上述的环状结构还包含与内环面相对的外环面，且灯罩结构的周缘与外环面之间具有混光距离。
依据本发明的实施例，上述的灯具还包含固定座。导光板、光源以及灯罩结构设置在固定座上。
依据本发明的实施例，上述的固定座包含第一壳体、第二壳体以及支撑轴。第二壳体连接第一壳体，且与第一壳体共同形成容置空间，其中光源以及导光板靠近入光面的一部分设置在容置空间中。支撑轴设置在第一壳体上，其中灯罩结构设置在支撑轴上，以覆盖导光板并与导光板形成距离。
依据本发明的实施例，上述的支撑轴具有相对的第一端与第二端，且第一端连接第一壳体，第二端设有凸缘。灯罩结构套设在第二端并抵靠凸缘，其中第二端设有端盖，端盖配置以固定灯罩结构。
依据本发明的实施例，上述的固定座还包含座体，座体连接并支撑第二壳体。
依据本发明的实施例，上述的支撑轴与端盖为中空结构，且中空结构配置以容设电线的一端，电线的另一端连接至固定座的座体。
由上述可知，本发明的灯罩结构具有多个导光结构，每一个导光结构可在灯罩结构的本体形成不同的厚度。因此，藉由本体的不同厚度对光线的吸收程度与穿透率的不同，可使得光线在经过灯罩结构时产生渐层的光 影与不同深浅的光源色彩。而且，随着观看者的观察角度的不同，灯罩结构所呈现的视觉效果亦有所不同。此外，当光线经过导光结构时，导光结构可以改变光线的行进方向，由此可避免产生眩光。
附图说明
为了更完整地了解实施例及其优点，现在参照附图做出下列描述，其中：
图1是绘示依照本发明的第一实施方式的灯具的装置示意图；
图2是绘示依照本发明的第一实施方式的灯具的局部剖示图；
图3是绘示依照本发明的实施方式的导光板的正视图；
图4是绘示依照本发明的实施方式的光线于导光板中行进的示意图；
图5A为不使用灯罩结构的灯具在开灯时的照片；
图5B为使用等厚度设计的灯罩结构的灯具在开灯时的照片；
图5C为使用本发明的第一实施方式的灯罩结构的灯具在开灯时的照片；
图5D为使用本发明的第一实施方式的灯罩结构的灯具在关灯时的照片；
图6是绘示依照本发明的第二实施方式的灯具的装置示意图；
图7是绘示依照本发明的第二实施方式的灯具的局部剖示图；
图8A为不使用灯罩结构的灯具在开灯时的照片；
图8B为使用等厚度设计的灯罩结构的灯具在开灯时的照片；
图8C为使用本发明的第二实施方式的灯罩结构的灯具在开灯时的照片；
图8D为使用本发明的第二实施方式的灯罩结构的灯具在关灯时的照片；以及
图9是绘示依照本发明的第三实施方式的灯具的装置示意图。
具体实施方式
请同时参照图1及图2，图1及图2是分别绘示依照本发明的第一实 施方式的灯具的装置示意图以及局部剖示图。本实施方式的灯具200主要包含导光板210、光源220、灯罩结构100以及固定座230。导光板210、光源220以及灯罩结构100设置在固定座230上。光源220主要用以提供光线至导光板210。灯罩结构100覆盖导光板210，且可折射与扩散从导光板210射出的光线，以产生特殊的光学效果。
请再次参照图2，固定座230包含第一壳体231、第二壳体232、支撑轴233以及座体234。第一壳体231连接第二壳体232，且第一壳体231与第二壳体232共同形成容置空间231a。光源220与导光板210均为环状结构，且光源220以及导光板210靠近入光面211的一部分设置在容置空间231a中。支撑轴233具有相对的第一端以及第二端，其中第一端设置在第一壳体231上，第二端设有凸缘233a。灯罩结构100套设在支撑轴233的第二端上并抵靠凸缘233a，以覆盖导光板210。在一些例子中，支撑轴233的第二端设有端盖235，其配置以固定灯罩结构100。在本实施例中，支撑轴233与端盖235为中空结构，电线236的一端可穿设并固定在支撑轴233与端盖235中，电线236的另一端则延伸出支撑轴233与端盖235外并连接至座体234。在本实施例中，灯具200为吊灯形式，座体234可连接于天花板或其他默认位置。
请一并参照图3及图4，其中图3是绘示依照本发明的实施方式的导光板的正视图，图4是绘示依照本发明的实施方式的光线于导光板中行进的示意图。如图3所示，导光板210包含内环面211、外环面212、第一环形表面213以及第二环形表面214。导光板210的内环面211为入光面，光源220邻设于导光板210的内环面211。在一些例子中，第二环形表面214上设有光学涂层214a。光学涂层214a主要用来破坏光线的全反射，以使光线从第一环形表面213射出。如图4所示，光源220所提供的光线(例如光线L1)在射向第二环形表面214的未设置光学涂层214a的位置时会被反射。射向光学涂层214a的光线(例如光线L2)大部分会被光学涂层214a反射而从第一环形表面213射出(例如光线L3)，少部分则会穿过光学涂层214而漫射出(例如光线L4)。因此，从第二环形表面214来看，设有光学涂层214a的部分看起来较亮，故可将光学涂层214a 做成图案设置在导光板210的表面上，以使导光板210具有不同的外观设计，并可进一步产生不同的光学效果。在其他例子中，依据不同的需求，光学涂层214a亦可设置在第一环形表面213上。
在其他实施例中，导光板210的外环面212可设计成斜面。在本实施例中，外环面212与第一环形表面213间形成锐角。藉此，当光线射向外环面212后，可朝向与外环面212相对的第一环形表面213出光。在其他实施例中，外环面212亦可与第二环形表面214形成锐角，以改变光线的反射方向。同样地，外环面212亦可设置光学涂层212a，以改变导光板210的出光效果。如图2所示，在一些实施例中，当灯罩结构100罩设在导光板210上时，导光板210的外环面212可与灯罩结构100的周缘之间形成一个混光距离D1。因此，从外环面212漫射出的光线在灯罩结构100的作用下，可产生光晕的视觉效果。
请再次参照图2，灯罩结构100主要包含本体110以及多个导光结构120。本体110具有内凹面111以及与内凹面111相对的外表面112。在本实施例中，导光结构120设置在外表面112上，且内凹面111为平滑表面。每一个导光结构120从外表面112朝向内凹面111凹陷。而且，每一个导光结构120具有中心厚度T1以及周缘厚度T2，且中心厚度T1小于周缘厚度T2。因此，藉由本体110的不同厚度对光线的吸收程度与穿透率的不同，可使得光线在穿过灯罩结构100时产生不同的光学效果。
具体而言，灯罩结构100的本体110靠近导光结构120中心的位置具有较小的厚度，而本体110靠近导光结构120周缘的位置则具有较大的厚度。而且，本体110的具有较小厚度的部分具有较高的光线穿透率以及较小的能量吸收率，本体110的具有较大厚度的部分则具有较低的光线穿透率以及较高的能量吸收率。因此，当来自不同方向的光线经过灯罩结构100的不同位置时，光线的行进方向以及强度均会被改变，进而形成特殊的光学效果。
请同时参照图5A至图5D，图5A为不使用灯罩结构的灯具在开灯时的照片，图5B为使用等厚度设计的灯罩结构的灯具在开灯时的照片，图5C为使用本发明的第一实施方式的灯罩结构的灯具在开灯时的照片，图 5D为使用本发明的第一实施方式的灯罩结构的灯具在关灯时的照片。如图5A所示，在不使用灯罩结构时，仅能看出导光板本身以及设置在导光板上的光学涂层图案的发光状态。如图5B所示，在使用了等厚度的灯罩结构后，虽然可以产生微小的光影变化，但整体的光影表现和质感较单调，且光线在经过等厚度的灯罩结构之后仍会产生眩光。
如图5C所示，在使用了本发明的第一实施例的灯罩结构后，不等厚度的灯罩结构可以折射、吸收或扩散部分光线，除了可避免产生眩光外，亦可形成光线渐层的视觉效果。此外，根据灯罩结构的厚度不同，所产生的视觉颜色也会有所不同，例如图5C的照片，黄色光源所产生的光线在经过导光板而从灯罩结构射出后，可在灯罩表面形成深黄色和浅黄色的光影变化。如图5D所示，在关灯时，不等厚度的灯罩亦可折射少部分外界自然光，以凸显灯罩结构本身的立体质感。在一些例子中，灯罩结构可采用玻璃制作，以提升灯罩结构的透明度与质感。
应理解，本发明的灯具亦可为壁灯形式。请同时参照图6及图7，图6及图7是分别绘示依照本发明的第二实施方式的灯具的装置示意图以及局部剖示图。本实施方式的灯具400主要包含导光板410、光源420、灯罩结构300以及固定座430。导光板410、光源420以及灯罩结构300设置在固定座430上。
如图7所示，固定座430包含第一壳体431、第二壳体432、支撑轴433以及座体434。第一壳体431连接第二壳体432，且第一壳体431与第二壳体432共同形成容置空间431a。光源420与导光板410均为环状结构，且光源420以及导光板410靠近入光面411的一部分设置在容置空间431a中。支撑轴433具有相对的第一端以及第二端，其中第一端设置在第一壳体431上，第二端设有凸缘433a。灯罩结构300套设在支撑轴433的第二端上并抵靠凸缘433a，以覆盖导光板410。在一些例子中，支撑轴433的第二端设有端盖435，其配置以固定灯罩结构300。在本实施例中，灯具400为壁灯形式，第二壳体432直接固定在座体434上，且座体434可固定在墙壁上或其他默认位置。
在本实施例中，导光板410的设计与前述如图2至图4所示的导光板 210设计相同，故于此不再赘述。
请再次参照图7，在本实施例中，灯罩结构300主要包含本体310以及多个导光结构320。本体310具有内凹面311以及与内凹面311相对的外表面312。在本实施例中，导光结构320设置在外表面312上，且内凹面311为平滑表面。每一个导光结构320从外表面312朝向内凹面311凹陷。而且，每一个导光结构320具有中心厚度T3以及周缘厚度T4，且中心厚度T3小于周缘厚度T4。因此，藉由本体310的不同厚度对光线的吸收程度与穿透率的不同，可使得光线在穿过灯罩结构300时产生不同的光学效果。
请同时参照图8A至图8D，图8A为不使用灯罩结构的灯具在开灯时的照片，图8B为使用等厚度设计的灯罩结构的灯具在开灯时的照片，图8C为使用本发明的第二实施方式的灯罩结构的灯具在开灯时的照片，图8D为使用本发明的第二实施方式的灯罩结构的灯具在关灯时的照片。如图8A所示，在不使用灯罩结构时，仅能看出导光板本身以及设置在导光板上的光学涂层图案的发光状态。如图8B所示，在使用了等厚度的灯罩结构后，虽然可以产生微小的光影变化，但整体的光影表现和质感较单调，且光线在经过等厚度的灯罩结构之后仍会产生眩光。
如图8C所示，在使用了本发明的第二实施例的灯罩结构后，不等厚度的灯罩结构可以折射、吸收或扩散部分光线，除了可避免产生眩光外，亦可形成光线渐层的视觉效果。此外，根据灯罩结构的厚度不同，所产生的视觉颜色也会有所不同，例如图8C的照片，黄色光源所产生的光线在经过导光板而从灯罩结构射出后，可在灯罩表面形成深黄色和浅黄色的光影变化。如图8D所示，在关灯时，不等厚度的灯罩亦可折射少部分外界自然光，以凸显灯罩结构本身的立体质感。
另请参照图9，其是绘示依照本发明的第三实施方式的灯具的装置示意图。本实施方式的灯具600的结构与图7所示的灯具400大致上相同，差异仅在于灯具600的灯罩结构500具有不同的设计。如图9所示，灯罩结构500主要包含本体510以及多个导光结构520。本体510具有内凹面511以及与内凹面511相对的外表面512。在本实施例中，导光结构520设 置在内凹面511上，且外表面512为平滑表面。在本实施例中，每一个导光结构520为凹陷结构，且从内凹面511朝向外表面512凹陷。而且，每一个导光结构520具有中心厚度T5以及周缘厚度T6，且中心厚度T5小于周缘厚度T6。因此，藉由本体510的不同厚度对光线的吸收程度与穿透率的不同，可使得光线在穿过灯罩结构500时产生不同的光学效果。
由上述本发明实施方式可知，本发明的灯罩结构具有多个导光结构，每一个导光结构可在灯罩结构的本体形成不同的厚度。因此，藉由本体的不同厚度对光线的吸收程度与穿透率的不同，可使得光线在经过灯罩结构时产生渐层的光影与不同深浅的光源色彩。而且，随着观看者的观察角度的不同，灯罩结构所呈现的视觉效果亦有所不同。此外，当光线经过导光结构时，导光结构可以改变光线的行进方向，由此可避免产生眩光。
虽然本发明的实施例已进行了如上揭露，然而其并非用以限定本发明，任何本领域技术人员，在不脱离本发明的精神和范围内，应当可以做出些许更动与润饰，故本发明的保护范围应当以所附的权利要求书为准。
【附图标记列表】
100   灯罩结构
110   本体
111   内凹面
112   外表面
120   导光结构
200   灯具
210   导光板
211   内环面
212   外环面
212a  光学涂层
213   第一环形表面
214   第二环形表面
214a  光学涂层
220   光源
230   固定座
231   第一壳体
231a  容置空间
232   第二壳体
233   支撑轴
233a  凸缘
234   座体
235   端盖
236   电线
300   灯罩结构
310   本体
311   内凹面
312   外表面
320   导光结构
400   灯具
410   导光板
420   光源
430   固定座
431   第一壳体
431a  容置空间
432   第二壳体
433   支撑轴
433a  凸缘
434   座体
435   端盖
500   灯罩结构
510   本体
511   内凹面
512   外表面
520   导光结构
600   灯具
D1    混光距离
T1    厚度
T2    周缘厚度
T3    中心厚度
T4    周缘厚度
T5    中心厚度
T6    周缘厚度

Claims (15)

  1. 一种灯罩结构，包含：
    本体，其具有内凹面以及与所述内凹面相对的外表面；以及
    多个导光结构，其设置在所述内凹面或所述外表面上，其中每一个导光结构具有中心厚度以及周缘厚度，且所述中心厚度小于所述周缘厚度。
  2. 根据权利要求1所述的灯罩结构，其中所述导光结构设置在所述外表面上，且每一个导光结构为凹陷结构，每一个凹陷结构从所述外表面向所述内凹面凹陷。
  3. 根据权利要求1所述的灯罩结构，其中所述导光结构设置在所述内凹面上，且每一个导光结构为凹陷结构，每一个凹陷结构从所述内凹面向所述外表面凹陷。
  4. 一种灯具，包含：
    导光板，其具有入光面以及出光面；
    光源，其邻设于所述入光面；以及
    根据权利要求1至3中任一项所述的灯罩结构，其覆盖所述导光板。
  5. 根据权利要求4所述的灯具，其中所述导光板为环状结构，所述环状结构具有内环面、第一环形表面以及第二环形表面，其中所述第一环形表面与所述第二环形表面连接于所述内环面的相对两侧。
  6. 根据权利要求5所述的灯具，其中所述内环面为所述入光面，且所述第一环形表面与所述第二环形表面中的至少一者为所述出光面。
  7. 根据权利要求5所述的灯具，其中所述内环面为所述入光面，且所述第一环形表面与所述第二环形表面中的至少一者的表面设有光学涂层。
  8. 根据权利要求5所述的灯具，其中所述内环面为所述入光面，且所述环状结构还包含与所述内环面相对的外环面，其中所述外环面上设有光学涂层。
  9. 根据权利要求5所述的灯具，其中所述内环面为所述入光面，且所述环状结构还包含与所述内环面相对的外环面，其中所述外环面为斜面。
  10. 根据权利要求5所述的灯具，其中所述环状结构还包含与所述内 环面相对的外环面，且所述灯罩结构的周缘与所述外环面之间具有混光距离。
  11. 根据权利要求4所述的灯具，还包含固定座，所述导光板、所述光源以及所述灯罩结构设置在所述固定座上。
  12. 根据权利要求11所述的灯具，其中所述固定座包含：
    第一壳体；
    第二壳体，其连接所述第一壳体，且与所述第一壳体共同形成容置空间，其中所述光源以及所述导光板靠近所述入光面的一部分设置在所述容置空间中；以及
    支撑轴，其设置在所述第一壳体上，其中所述灯罩结构设置在所述支撑轴上，以覆盖所述导光板并与所述导光板形成距离。
  13. 根据权利要求12所述的灯具，其中所述支撑轴具有相对的第一端与第二端，所述第一端连接所述第一壳体，所述第二端设有凸缘，所述灯罩结构套设在所述第二端并抵靠所述凸缘，其中所述第二端设有端盖，所述端盖配置以固定所述灯罩结构。
  14. 根据权利要求13所述的灯具，其中所述固定座还包含座体，所述座体连接并支撑所述第二壳体。
  15. 根据权利要求13所述的灯具，其中所述支撑轴与所述端盖均为中空结构，其中所述中空结构配置以容设电线的一端，所述电线的另一端连接至所述固定座的座体。
PCT/CN2018/098341 2018-08-02 2018-08-02 灯罩结构及灯具 WO2020024223A1 (zh)

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EP18928541.4A EP3832197B1 (en) 2018-08-02 2018-08-02 Lampshade structure and lamp
TW107131188A TWI674378B (zh) 2018-08-02 2018-09-05 燈具
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US20200103090A1 (en) 2020-04-02
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EP3832197A4 (en) 2022-03-23

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