WO2016004689A1 - 用于台灯的灯头及台灯 - Google Patents

用于台灯的灯头及台灯 Download PDF

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Publication number
WO2016004689A1
WO2016004689A1 PCT/CN2014/088390 CN2014088390W WO2016004689A1 WO 2016004689 A1 WO2016004689 A1 WO 2016004689A1 CN 2014088390 W CN2014088390 W CN 2014088390W WO 2016004689 A1 WO2016004689 A1 WO 2016004689A1
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WO
WIPO (PCT)
Prior art keywords
light
plate
light diffusing
diffusing plate
scattering
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PCT/CN2014/088390
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English (en)
French (fr)
Inventor
季春燕
武延兵
Original Assignee
京东方科技集团股份有限公司
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Application filed by 京东方科技集团股份有限公司 filed Critical 京东方科技集团股份有限公司
Priority to US14/767,520 priority Critical patent/US10309593B2/en
Publication of WO2016004689A1 publication Critical patent/WO2016004689A1/zh

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S6/00—Lighting devices intended to be free-standing
    • F21S6/002—Table lamps, e.g. for ambient lighting
    • F21S6/003—Table lamps, e.g. for ambient lighting for task lighting, e.g. for reading or desk work, e.g. angle poise lamps
    • 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
    • G02B6/004—Scattering dots or dot-like elements, e.g. microbeads, scattering particles, nanoparticles
    • G02B6/0043—Scattering dots or dot-like elements, e.g. microbeads, scattering particles, nanoparticles provided on the surface of the light guide
    • 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
    • G02B6/0063—Means for improving the coupling-out of light from the light guide for extracting light out both the major surfaces of the light guide
    • 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
    • G02B6/0036—2-D arrangement of prisms, protrusions, indentations or roughened surfaces
    • 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
    • G02B6/0058—Means for improving the coupling-out of light from the light guide varying in density, size, shape or depth along the light guide
    • 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
    • G02B6/0066—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 characterised by the light source being coupled to the light guide
    • G02B6/0068—Arrangements of plural sources, e.g. multi-colour light sources

Definitions

  • At least one embodiment of the invention relates to a base for a table lamp and a table lamp.
  • Table lamps are lighting devices commonly used in people's lives.
  • the desk lamp usually includes a lamp holder and a base and a lamp holder connected by the lamp holder.
  • the lamp head is provided with a light source, and the light source is illuminated by turning on the power source to realize illumination.
  • At least one embodiment of the present invention provides a base for a table lamp and a table lamp to achieve sufficient illumination not only in the work area below the base but also above the base.
  • At least one embodiment of the present invention provides a lamp cap for a desk lamp, comprising: a light diffusing plate including a first plate surface and a second plate surface disposed opposite to each other and a side surface surrounding the end faces of the two panel faces, At least one side of the light diffusing plate can enter the light; the side of the light diffusing plate that can enter the light is the light incident side; the light can enter the light diffusing plate from the light incident side of the light diffusing plate, and is scattered by the light diffusing plate A part of the light is emitted from the first plate surface of the light diffusing plate, and another part of the light is emitted from the second plate surface of the light diffusing plate.
  • At least one embodiment of the present invention also provides a table lamp comprising the above described lamp cap.
  • FIG. 1 is a schematic view of a table lamp according to an embodiment of the present invention.
  • Figure 2 is a schematic cross-sectional view of the light guide plate of the lamp of Figure 1;
  • FIG. 3 is a cross-sectional view showing a light guide plate of a table lamp according to still another embodiment of the present invention.
  • FIG. 4 is a schematic cross-sectional view of a light guide plate of a table lamp according to still another embodiment of the present invention.
  • the inventor of the present application has noticed that the current table lamp only provides downward illumination, which tends to cause the work area to be too bright and the surrounding environment to be too dark, so that the human eye is prone to fatigue when reading and writing in an environment with large difference in brightness. And discomfort.
  • At least one embodiment of the present invention provides a lamp cap for a desk lamp, the lamp cap including a light diffusing plate including a first plate surface and a second plate surface disposed opposite to each other and a side surface surrounding the end faces of the two plate surfaces; At least one side of the light diffusing plate can enter the light, and the side of the light diffusing plate that can enter the light is the light incident side; the light can enter the light diffusing plate from the light incident side of the light diffusing plate, and the light is scattered by the light diffusing plate, and part of the light is from The first plate surface of the light diffusing plate is emitted, and the other portion of the light is emitted from the second plate surface of the light diffusing plate.
  • the above described lamp head for a desk lamp can also include at least one light source.
  • the light source is disposed opposite to the light incident side; the light from the light source can enter the light diffusing plate from the light incident side of the light diffusing plate.
  • the light diffusing plate may include two opposing light incident sides, i.e., two opposite sides of the light diffusing plate may enter the light.
  • the light diffusing plate may further include one or at least three light incident sides.
  • At least one embodiment of the present invention also provides a table lamp comprising the lamp cap of any of the above.
  • the table lamp further includes a base and a light stand, the light stand connecting the base and the base.
  • the light-scattering plate is a light-guiding plate and includes two opposite light-incident sides and the light source is an LED light bar.
  • the table lamp provided by the first embodiment of the present invention includes a base 100, a light stand 200 and a base 300, and the light stand 200 connects the base 100 and the base 300.
  • the base 300 includes a rectangular light guide plate 310 and two light bars 320.
  • the rectangular light guide plate 310 includes a first plate surface 311 and a second plate surface 312 disposed opposite to each other and four side surfaces surrounding the end faces of the two plate surfaces.
  • the first plate surface 311 of the light guide plate is provided with a concave dot type. Scattering dots 313; two LED strips 320 are respectively disposed on two opposite sides of the rectangular light guide plate 310.
  • the side of the rectangular light guide plate disposed opposite to the LED light bar is the light incident side, and the light emitted by the LED light bar 320 enters the light guide plate from the light incident side of the light guide plate, and is scattered by the scattering mesh point 313 of the first plate surface of the light guide plate. Light is emitted from the first plate surface 311 of the light guide plate, and another portion of the light is emitted from the second plate surface 312 of the light guide plate.
  • the desk lamp provided in this embodiment, after the light emitted by the LED light bar enters the light guide plate from the light incident side of the light guide plate, the light that is directed toward the first plate surface is mostly guided by the light guide of the first plate surface.
  • the reflection of the light through the first plate surface and the refraction of the second plate surface are emitted from the second plate surface to illuminate the working area under the lamp cap, and another small portion of the light is directly emitted from the first plate surface through the refraction of the first plate surface.
  • Illuminating the area above the lamp head; the light that is directed toward the second plate surface is totally reflected and then directed toward the first plate surface, and the light guiding effect of the scattering mesh point of the first plate surface is as described above, and the repetition is not tired Said.
  • the table lamp of the embodiment can provide sufficient illumination not only in the work area under the lamp head, but also provide a certain illumination above the lamp head, which provides a relatively large and uniform illumination space for the user, thereby reducing the vision. fatigue.
  • the shape of the light guide plate may be various, and the rectangle is only one of them.
  • the shape of the light guide plate may be designed as a circle or a square or a hexagon or the like as needed.
  • the shape of the scattering dots may be various.
  • the shape of the scattering dots can be concave or convex.
  • the above-described concave dot type scattering dots are only an example and are only used to illustrate the embodiments of the present invention.
  • the shape of the scattering dots may be other shapes such as a concave or convex line shape.
  • the light guide plate is only a specific example of the light scattering plate, and is only used as an example, as long as it is a plate-shaped device capable of uniformly scattering light incident from the side and allowing the upper and lower surfaces to transmit light.
  • the light diffusing plate may also be a photovoltaic device made of a liquid crystal or a polymer composite material, such as, but not limited to, a Normal Mode Polymer Dispersed Liquid Crystal device, and a trans polymer dispersed liquid crystal (Reverse Mode). Polymer Dispersed Liquid Crystal), Polymer Network Liquid Crystal (Polymer Network) Liquid Crystal (PNLC) device, Polymer Stabilized Cholesteric Texture liquid crystal device, and the like.
  • the number of LED strips in the above embodiments is for illustrative purposes only, and the number of LED strips may be one, two, three or more according to actual needs and in combination with the shape of the light guide plate;
  • the LED light bar is used as a light source for illustration only, and other light sources, such as a cold cathode light source, may also be selected.
  • the second embodiment of the present invention provides a table lamp having a light guide plate different from that of the table lamp provided in the first embodiment, and the other portions are the same as those of the first embodiment.
  • the light guide plate of the lamp of the second embodiment as shown in FIG. 3, the second plate surface 312 of the light guide plate is provided with a scattering mesh point 314, and the density of the scattering mesh point 314 of the second plate surface of the light guide plate is smaller than that of the light guide plate.
  • the density of the scattering spot 313 of a panel is provided with a scattering mesh point 314, and the density of the scattering mesh point 314 of the second plate surface of the light guide plate is smaller than that of the light guide plate.
  • the scattering mesh point of the second plate surface of the light guide plate may be a concave or convex structure. Referring to the above related description, the repeated description is not repeated.
  • the scattering dots of the second plate surface of the light guide plate can emit more light from the first plate surface of the light guide plate to enhance the brightness of the area above the lamp cap.
  • the density of the scattering dots of the second plate surface of the light guide plate can be made smaller than the density of the scattering dots of the first plate surface of the light guide plate, thereby ensuring the lamp cap.
  • the work area below has sufficient illumination while reducing energy consumption.
  • the scattering dots 314 of the second plate surface of the light guide plate may be disposed at an edge region of the second plate surface of the light guide plate, as shown in FIG. In this way, more light is emitted from the intermediate portion of the second plate surface of the light guide plate, that is, the working area under the lamp head can be sufficiently illuminated; at the same time, the scattering mesh point 314 disposed at the edge region of the second plate surface is away from the LED light bar. This can improve the utilization of light.
  • the light guide plate is further defined on the basis of the desk lamp of the second embodiment: the density of the scattering dots in the edge region of the first plate surface of the light guide plate is smaller than that of the first light guide plate The density of the scattering dots in the middle of the panel.
  • the scattering mesh point 313 of the first plate surface 311 of the light guide plate is disposed at an intermediate portion of the first plate surface, and the edge region of the first plate surface 311 of the light guide plate is not provided with a scattering mesh point, as shown in FIG. Show. In this way, more light can be emitted from the first plate surface 311 of the light guide plate, and the brightness of the area above the lamp cap is enhanced.
  • the lamp holder and the desk lamp for the desk lamp provided by the embodiment of the invention, after the light enters the light scattering plate from the light incident side of the light scattering plate, a part of the light is emitted through the second plate surface due to the scattering of the light, and the illumination is located. In the work area below the lamp head, another part of the light is emitted from the first board surface, illuminating the area above the lamp head.
  • the lamp holder and the table lamp for the desk lamp provided by the embodiment of the invention can provide sufficient illumination not only in the working area under the lamp head, but also provide a certain illumination above the lamp head, which provides a relatively large and uniform user. The lighting space can thus reduce visual fatigue.

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

Abstract

一种用于台灯的灯头（300）及台灯，灯头包括光线散射板（310），光线散射板包括相对设置的第一板面（311）和第二板面（312），以及围在两个板面端部的侧面，光线散射板包括至少一个可进入光线的入光侧面；光线可从光线散射板的入光侧面进入光线散射板，经光线散射板的散射，一部分光从光线散射板的第一板面射出，另一部分光从光线散射板的第二板面射出。灯头不仅在位于灯头下方的作业区域可以提供足够的照明，在灯头的上方也可以提供一定的光照。

Description

用于台灯的灯头及台灯 技术领域
本发明的至少一个实施例涉及一种用于台灯的灯头及台灯。
背景技术
台灯是在人们生活中常用的照明装置。台灯通常包括灯架以及通过灯架连接的底座和灯头。灯头设有光源，通过接通电源使光源发光实现照明。
发明内容
本发明的至少一个实施例提供了一种用于台灯的灯头及台灯，以实现不仅在位于灯头下方的作业区域有足够的照明，而且在灯头的上方也有一定的光照。
本发明的至少一个实施例提供了一种用于台灯的灯头，其包括：光线散射板，其包括相对设置的第一板面和第二板面及围在两个板面端部的侧面，所述光线散射板的至少一个侧面可进入光线；所述可进入光线的光线散射板的侧面是入光侧面；光线可从光线散射板的入光侧面进入光线散射板，经光线散射板的散射，一部分光从光线散射板的第一板面射出，另一部分光从光线散射板的第二板面射出。
本发明的至少一个实施例还提供了一种台灯，其包括上述的灯头。
附图说明
为了更清楚地说明本发明实施例的技术方案，下面将对实施例的附图作简单地介绍，显而易见地，下面描述中的附图仅仅涉及本发明的一些实施例，而非对本发明的限制。
图1为本发明的一个实施例的台灯的示意图；
图2为图1所示台灯的导光板的横截面示意图；
图3为本发明的又一个实施例的台灯的导光板的横截面示意图；
图4为本发明的再一个实施例的台灯的导光板的横截面示意图。
主要元件附图标记说明：
100底座，200灯架，300灯头，310导光板，311第一板面，312第二板面，313第一板面的散射网点，314第二板面的散射网点，320LED灯条。
具体实施方式
为使本发明实施例的目的、技术方案和优点更加清楚，下面将结合本发明实施例的附图，对本发明实施例的技术方案进行清楚、完整地描述。显然，所描述的实施例是本发明的一部分实施例，而不是全部的实施例。基于所描述的本发明的实施例，本领域普通技术人员在无需创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
本申请的发明人注意到，目前的台灯只提供向下照射的光线，这容易导致作业区域过亮而周围环境过暗，使得人眼在亮度差异大的环境中进行读写作业时容易感到疲劳和不适。
本发明的至少一个实施例提供了一种用于台灯的灯头，该灯头包括光线散射板，其包括相对设置的第一板面和第二板面及围在两个板面端部的侧面；光线散射板的至少一个侧面可进入光线，可进入光线的光线散射板的侧面是入光侧面；光线可从光线散射板的入光侧面进入光线散射板，经光线散射板的散射，一部分光从光线散射板的第一板面射出，另一部分光从光线散射板的第二板面射出。
在至少一个实施例中，上述用于台灯的灯头还可以包括至少一个光源。光源与入光侧面相对设置；光源发出的光线可从光线散射板的入光侧面进入光线散射板。
在一个实施例中，光线散射板可以包括两个相对的入光侧面，即光线散射板的两个相对的侧面可进入光线。当然，本发明实施例不限于此，例如，光线散射板还可以包括一个或至少三个入光侧面。
本发明的至少一个实施例还提供了一种台灯，其包括上述任一项所述的灯头。在本发明的至少一个实施例中，该台灯还包括底座和灯架，灯架将底座和灯头连接。
下面结合附图，以光线散射板是导光板并且包括两个相对的入光侧面、光源为LED灯条为例对本发明实施例提供的台灯和灯头进行详细说明。
本发明的第一个实施例提供的台灯，如图1和图2所示，包括底座100，灯架200和灯头300，灯架200将底座100和灯头300连接。灯头300包括矩形导光板310和两个灯条320。矩形导光板310包括相对设置的第一板面311和第二板面312及围在两个板面端部的四个侧面，导光板的第一板面311上设置有凹形圆点型的散射网点313；两个LED灯条320，分别设置在矩形导光板310的两个相对的侧面。与LED灯条相对设置的矩形导光板的侧面是入光侧面，LED灯条320发出的光从导光板的入光侧面进入导光板，经导光板第一板面的散射网点313的散射，一部分光从导光板的第一板面311射出，另一部分光从导光板的第二板面312射出。
在本实施例提供的台灯中，LED灯条发出的光从导光板的入光侧面进入导光板后，射向第一板面的光由于第一板面的散射网点的导光作用，大部分光经第一板面的反射及第二板面的折射从第二板面射出，照亮位于灯头下方的作业区域，另一小部分光直接经第一板面的折射从第一板面射出，照亮位于灯头上方的区域；射向第二板面的光发生全反射后射向第一板面，第一板面的散射网点的导光作用如前所述，重复之处不予累述。本实施例的台灯，不仅在位于灯头下方的作业区域可以提供足够的照明，而且在灯头的上方也可以提供一定的光照，这为使用者提供了比较大且均匀的照明空间，从而可以减缓视觉疲劳。
需要说明的是，导光板的形状可以是多种，矩形只是其中的一种，仅用于举例说明，导光板的形状可以根据需要设计为圆形或正方形或六边形等等。
需要说明的是，散射网点的形状可以是多种。在至少一个实施例中，散射网点的形状可以是凹形或凸形。上述凹形圆点型的散射网点只是一个示例，仅用于举例说明本发明实施例。例如，散射网点的形状还可以是凹形或凸形的折线形等其他形状。
需要说明的是，导光板只是光线散射板的一个具体的例子，仅用于举例说明，只要是能对从侧面入射的光起到均匀散射作用且使上下表面能透射光线的板状器件都可以。例如，光线散射板还可以是采用液晶或高分子复合材料制成的光电器件，如包括但不限于正式聚合物分散液晶(Normal Mode Polymer Dispersed Liquid Crystal)器件，反式聚合物分散液晶(Reverse Mode Polymer Dispersed Liquid Crystal)器件，聚合物网络液晶(Polymer Network  Liquid Crystal，简称PNLC)器件，高分子稳定型胆甾相(Polymer Stabilized Cholesteric Texture)液晶器件等等。
需要说明的是，上述实施例中LED灯条的数量，仅用于举例说明，根据实际需要并结合导光板的形状，LED灯条的数量可以是一个、两个、三个或多个；并且，采用LED灯条作为光源仅用于举例说明，也可以选择其他的光源，如冷阴极光源类。
本发明的第二个实施例提供的台灯，其导光板与第一个实施例提供的台灯中的导光板不同，其他部分与第一个实施例的台灯相同。第二个实施例的台灯的导光板，如图3所示，导光板的第二板面312设置有散射网点314，且所述导光板第二板面的散射网点314的密度小于导光板第一板面的散射网点313的密度。
在至少一个实施例中，导光板第二板面的散射网点可以是凹形或凸形结构，参见上述相关描述，重复之处不再赘述。
导光板第二板面的散射网点可以把更多的光线从导光板第一板面射出，以增强灯头上方区域的亮度。在导光板的第一板面和第二板面都设置有散射网点时，可以使导光板第二板面的散射网点的密度小于导光板第一板面的散射网点的密度，这样能够保证灯头下方的作业区域有足够的照明，同时减小能耗。
作为一种可选的方式，导光板第二板面的散射网点314可以设置在导光板第二板面的边缘区域，如图3所示。这样，从导光板第二板面的中间区域射出的光线较多，即能够保证灯头下方的作业区域有足够的照明；同时，设置在第二板面的边缘区域的散射网点314距离LED灯条近，这可以提高光线的利用率。
本发明的第三个实施例提供的台灯，在第二个实施例的台灯的基础上，对导光板进行进一步限定：导光板第一板面的边缘区域的散射网点的密度小于导光板第一板面的中间区域的散射网点的密度。
作为一种可替换的方式，导光板的第一板面311的散射网点313设置在第一板面的中间区域，导光板的第一板面311的边缘区域未设置散射网点，如图4所示。这样，可以使更多的光从导光板的第一板面311射出，增强灯头上方区域的亮度。
本发明的至少一个实施例提供的用于台灯的灯头的实施，可参见上述实施例中的台灯的实施方式，重复之处不再赘述。
在本发明实施例提供的用于台灯的灯头及台灯中，光线从光线散射板的入光侧面进入光线散射板后，由于光线的散射的作用，一部分光经第二板面射出，照亮位于灯头下方的作业区域，另一部分光从第一板面射出，照亮位于灯头上方的区域。本发明实施例提供的用于台灯的灯头及台灯，不仅在位于灯头下方的作业区域可以提供足够的照明，而且在灯头的上方也可以提供一定的光照，这为使用者提供了比较大且均匀的照明空间，从而可以减缓视觉疲劳。
显然，本领域的技术人员可以对本发明实施例进行各种改动和变型而不脱离本发明的精神和范围。这样，倘若本发明的这些修改和变型属于本发明权利要求及其等同技术的范围之内，则本发明也意图包含这些改动和变型在内。
本申请要求于2014年7月11日递交的中国专利申请第201410332023.2号的优先权，在此全文引用上述中国专利申请公开的内容以作为本申请的一部分。

Claims (15)

  1. 一种用于台灯的灯头，包括：光线散射板，其中，
    所述光线散射板包括相对设置的第一板面和第二板面及围在两个板面端部的侧面，所述光线散射板的至少一个侧面可进入光线，所述可进入光线的光线散射板的侧面是入光侧面；
    光线可从光线散射板的入光侧面进入光线散射板，经光线散射板的散射，一部分光从光线散射板的第一板面射出，另一部分光从光线散射板的第二板面射出。
  2. 根据权利要求1所述的用于台灯的灯头，其中，
    所述光线散射板的所述第一板面设置有散射网点；
    光线可从光线散射板的入光侧面进入光线散射板，经光线散射板第一板面的散射网点的散射后，一部分光从光线散射板的第一板面射出，另一部分光从光线散射板的第二板面射出。
  3. 根据权利要求2所述的用于台灯的灯头，其中，所述光线散射板的第二板面设置有散射网点，且所述光线散射板第二板面的散射网点的密度小于光线散射板第一板面的散射网点的密度。
  4. 根据权利要求3所述的用于台灯的灯头，其中，所述光线散射板第二板面的散射网点位于所述光线散射板第二板面的边缘区域。
  5. 根据权利要求3或4所述的用于台灯的灯头，其中，所述光线散射板包括两个相对的入光侧面。
  6. 根据权利要求2-5任一所述的用于台灯的灯头，其中，所述光线散射板第一板面的边缘区域的散射网点的密度小于光线散射板第一板面的中间区域的散射网点的密度。
  7. 根据权利要求2-5任一所述的用于台灯的灯头，其中，所述光线散射板第一板面的散射网点设置在第一板面的中间区域。
  8. 根据权利要求2-7任一所述的用于台灯的灯头，其中，所述光线散射板第一板面的散射网点是凹形或凸形结构。
  9. 根据权利要求2-8任一所述的用于台灯的灯头，其中，所述光线散射板第二板面的散射网点是凹形或凸形结构。
  10. 根据权利要求1-9任一所述的用于台灯的灯头，其中，所述光线散射板是导光板。
  11. 根据权利要求1-9任一所述的用于台灯的灯头，其中，所述光线散射板是正式聚合物分散液晶器件、反式聚合物分散液晶器件、聚合物网络液晶器件或高分子稳定型胆甾相液晶器件。
  12. 根据权利要求1-11任一所述的用于台灯的灯头，还包括：至少一个光源，其中，
    所述光源与入光侧面相对设置；
    所述光源发出的光线可从光线散射板的入光侧面进入光线散射板。
  13. 根据权利要求12所述的用于台灯的灯头，其中，所述光源是LED灯条或冷阴极光源。
  14. 一种台灯，包括如权利要求1-13任一所述的灯头。
  15. 如权利要求14所述的台灯，还包括：底座和灯架，所述灯架将所述底座和所述灯头连接。
PCT/CN2014/088390 2014-07-11 2014-10-11 用于台灯的灯头及台灯 WO2016004689A1 (zh)

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