WO2012129976A2 - Led投影灯具 - Google Patents

Led投影灯具 Download PDF

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Publication number
WO2012129976A2
WO2012129976A2 PCT/CN2012/070513 CN2012070513W WO2012129976A2 WO 2012129976 A2 WO2012129976 A2 WO 2012129976A2 CN 2012070513 W CN2012070513 W CN 2012070513W WO 2012129976 A2 WO2012129976 A2 WO 2012129976A2
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WO
WIPO (PCT)
Prior art keywords
projection lamp
led projection
leds
led
bracket
Prior art date
Application number
PCT/CN2012/070513
Other languages
English (en)
French (fr)
Other versions
WO2012129976A3 (zh
Inventor
谢海军
Original Assignee
上海广茂达光艺科技股份有限公司
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 上海广茂达光艺科技股份有限公司 filed Critical 上海广茂达光艺科技股份有限公司
Priority to EP12765958.9A priority Critical patent/EP2696134B1/en
Priority to KR1020137028941A priority patent/KR20140071275A/ko
Priority to AU2012237945A priority patent/AU2012237945A1/en
Priority to JP2014501404A priority patent/JP5753965B2/ja
Priority to US14/009,097 priority patent/US20140016310A1/en
Publication of WO2012129976A2 publication Critical patent/WO2012129976A2/zh
Publication of WO2012129976A3 publication Critical patent/WO2012129976A3/zh
Priority to AU2015252153A priority patent/AU2015252153B2/en

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21K—NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
    • F21K9/00—Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
    • F21K9/60—Optical arrangements integrated in the light source, e.g. for improving the colour rendering index or the light extraction
    • F21K9/62—Optical arrangements integrated in the light source, e.g. for improving the colour rendering index or the light extraction using mixing chambers, e.g. housings with reflective walls
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V5/00—Refractors for light sources
    • F21V5/007—Array of lenses or refractors for a cluster of light sources, e.g. for arrangement of multiple light sources in one plane
    • 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
    • F21S2/005—Systems of lighting devices, not provided for in main groups F21S4/00 - F21S10/00 or F21S19/00, e.g. of modular construction 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
    • F21V17/005—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages with keying means, i.e. for enabling the assembling of component parts in distinctive positions, e.g. for preventing wrong mounting
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V19/00—Fastening of light sources or lamp holders
    • F21V19/001—Fastening of light sources or lamp holders the light sources being semiconductors devices, e.g. LEDs
    • F21V19/003—Fastening of light source holders, e.g. of circuit boards or substrates holding light sources
    • F21V19/005—Fastening of light source holders, e.g. of circuit boards or substrates holding light sources by permanent fixing means, e.g. gluing, riveting or embedding in a potting compound
    • 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
    • F21Y2107/00—Light sources with three-dimensionally disposed light-generating elements
    • F21Y2107/20—Light sources with three-dimensionally disposed light-generating elements on convex supports or substrates, e.g. on the outer surface of spheres
    • 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
    • F21Y2113/00—Combination of light sources
    • F21Y2113/10—Combination of light sources of different colours
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2115/00—Light-generating elements of semiconductor light sources
    • F21Y2115/10—Light-emitting diodes [LED]

Definitions

  • the present invention relates to the field of LED semiconductor illumination, and in particular to an LED projection lamp capable of realizing a pixel function. Background technique
  • LED As a new generation of green lighting sources, LED has many advantages such as high luminous efficiency, long life, safety, energy saving, environmental protection and bright colors. It is widely used in indoor and outdoor lighting, backlight, medical, transportation and other fields.
  • the LED light source has a long service life and low energy consumption
  • the LED is an approximate point light source, and can emit light only to half a space, and the illumination distribution is uneven, and the light energy is bright in the middle and dark around.
  • the LED light source has strong glare and poor visual comfort. Therefore, it is necessary to add an optical device with secondary optical design or even multiple optical designs on the LED light source to provide illumination uniformity, brightness uniformity and glare elimination of the LED light source. Improve visual comfort.
  • the technical problem to be solved by the present invention is to provide an LED projection lamp in order to overcome the drawback that the prior art cannot achieve full color illumination and pixel effect.
  • An LED projection lamp includes a lamp holder, wherein the LED projection lamp further includes a plurality of light mixing units, and each of the light mixing units includes a The lens group and the plurality of LEDs are discretely fixed to the surface of the lamp holder; the spatial angles of the surface of the bracket are different.
  • each of the light mixing units further includes an aluminum substrate, and the plurality of LEDs are fixed on the aluminum substrate, and the lens group covers the plurality of LEDs from above and is fixed on the aluminum substrate.
  • the periphery of the aluminum substrate is provided with at least two positioning holes, and the periphery of the lens group is provided with at least two positioning angles, and the positioning angle is correspondingly buckled with the positioning hole.
  • the aluminum substrate has a good heat dissipation effect, which can avoid overheating of the LED lamp.
  • the surface of the bracket is curved, polyhedral or umbrella.
  • a plurality of fixing surfaces are arranged on the surface of the bracket, and each of the light mixing units is correspondingly fixed to each of the fixing surfaces.
  • a through hole is opened in the middle of the fixing surface.
  • the through hole is used for the LED light wire routing, and the light wire is arranged neatly.
  • the aluminum substrate, the lens group and the fixing surface match each other.
  • the fixing manner between the aluminum substrate and the surface of the bracket is by mounting, riveting, screwing or integrally forming.
  • the light mixing unit is arranged in a circular arrangement, a polygonal arrangement or a matrix arrangement on the surface of the bracket.
  • a heat dissipation rib is disposed under the lamp holder.
  • the heat dissipation ribs can further improve the heat dissipation and ensure a good heat dissipation effect.
  • the material of the lens group is made of acrylic or PC material.
  • the plurality of LEDs comprise white LEDs and color LEDs.
  • the color LED light can realize the full color adjustment by adjusting the white light LED light, and can also realize the light mixing function of a single pixel spot, the color temperature adjustment of a single pixel spot, and the adjustment of the color rendering index.
  • the light mixing units are dispersedly arranged to achieve different pixel effects.
  • the full color adjustable function can be realized for each pixel, and the light mixing effect of the monochromatic LED and the white LED is made.
  • the chromaticity is increased to 90°/. the above.
  • FIG. 1 is a schematic view of a lamp holder in accordance with a preferred embodiment of the present invention.
  • FIG. 2 is a schematic view of a lens assembly in accordance with a preferred embodiment of the present invention.
  • Figure 3 is a side elevational view of a lens assembly in accordance with a preferred embodiment of the present invention.
  • FIG. 4 is a schematic view of the overall structure of a preferred embodiment of the present invention. detailed description
  • the lamp cap of the LED projection lamp in the embodiment has an arc-shaped bracket 1 which has a shape similar to a disk-shaped aluminum alloy heat sink, and has a plurality of curved faces or multi-fold faces on the upper surface thereof.
  • Fixed surface 11 Each of the fixing faces 11 has a through hole 12 at the center thereof, and an aluminum substrate 2 matching the shape of the surface can be placed at each of the fixing faces 11.
  • the curved bracket 1 may be a single structure or a separate structure.
  • the bracket 1 can also be a polyhedron or an umbrella.
  • other shapes with different spatial angles can be used, and the pixel effect can be achieved.
  • the position and angle of the aluminum substrate 2 are determined by a positioning angle.
  • a plurality of monochromatic LEDs such as four monochromatic LEDs, are attached to the aluminum substrate 2 (see Figure 4).
  • the color of the LED can be any single primary color, such as red, green, blue and white.
  • the LED light wire can be passed through the through hole 12 in the fixed surface 11 for linking the control circuit of the lower portion of the chassis.
  • the lens group 3 covers a plurality of LED light sources 21 from above and is fixed to the aluminum substrate 2.
  • the periphery of the aluminum substrate 2 is provided with at least two positioning holes, and the periphery of the lens group 3 is provided with at least two positioning angles 32.
  • the positioning angle 32 is correspondingly buckled with the positioning hole, thereby accurately positioning to form a pixel spot.
  • the lens group 3 is used to accurately mix the light emitted by the four single-color LEDs to achieve full-color illumination.
  • the material of the lens group is made of acrylic or PC.
  • an aluminum substrate 2, a plurality of LED light sources 21 and a lens group 3 form a light mixing unit.
  • the light mixing unit is fixedly dispersed as a whole on the fixing surface of the luminaire 1 bracket, and may be arranged in a circular arrangement, a polygonal arrangement or a matrix arrangement.
  • each of the fixing faces 11 has different spatial angles and oblique directions, the respective fixing faces 11 are inclined by the intermediate edge, and the inclination angle at the periphery is larger than the inclination angle of the inner layer, so that the mixed color full-color spot is illuminated.
  • the surface is separated and the pixel effect is achieved.
  • the aluminum substrate 2, the lens group 3 and the fixing surface 11 are matched with each other.
  • the fixing between them can be carried out by mounting, riveting or screwing or integral with the curved bracket 1.
  • a heat dissipation rib is arranged under the lamp holder 1, which can further increase the heat dissipation effect of the LED projection lamp.
  • each light mixing unit includes white LEDs and color LEDs.
  • Color LEDs are monochromatic sources that are mixed to form different colors. Then, by adjusting the white LEDs, different colors can be achieved to achieve full color display. In this way, not only the full color display of each spot is achieved, but also the light mixing function of a single pixel spot, the color temperature of a single pixel spot, and the color rendering index of the light are adjusted. These functions can be controlled by the control circuit.
  • the LED projection lamp of the present invention can not only realize the pixel effect, but also display in full color, and can adjust the color. Its structure is simple and easy to implement, significantly improving the performance of LED projection lamps.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Optics & Photonics (AREA)
  • Fastening Of Light Sources Or Lamp Holders (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
  • Led Device Packages (AREA)
  • Securing Globes, Refractors, Reflectors Or The Like (AREA)

Abstract

本发明公开了一种LED投影灯具，包括一灯具支架，所述LED投影灯具还包括若干混光单元，各所述混光单元包括一透镜组和若干LED，且分散地固定于所述灯具支架的表面；所述支架表面各处的空间角度均不相同。本发明通过将混光单元固定在灯具支架上的各个不同倾斜角度的固定面上，使各个混光单元相互分散排列，实现不同的像素效果。通过同时配合使用白光LED及彩光LED，在提供足够光照度的前提下，还能对各个像素点实现全彩可调的功能，且通过单色LED与白光LED的混光作用，使显色性提高到90%以上。

Description

LED投影灯具 技术领域
本发明涉及 LED半导体照明领域， 特别涉及一种能够实现像素功能的 LED投影灯具。 背景技术
众所周知， LED作为新一代绿色照明光源， 具有光效高、 寿命长、 安全、 节能、 环保及色 彩鲜艳等众多优点， 并广泛应用于室内外照明、 背光源、 医疗、 交通等领域。
然而， LED光源虽然使用寿命长、 能耗低， 但是 LED是近似点光源， 只能向半个空间发出 光线， 且照度分布不均匀， 光能量呈中间亮， 四周暗的分布。 此外， LED光源有强烈眩光， 视 觉舒适很差， 所以需要在 LED光源上增加经过二次光学设计甚至多次光学设计的光学装置来 提供 LED光源的照度均匀性， 亮度均匀性以及消除眩光， 以提高视觉舒适性。
针对上述问题， 现有技术中通过利用导光板折射光线， 以达到均匀照明、 减少眩光的效 果。 但其只能是单一白光效果， 无法全彩照明， 更不能实现像素显示的效果。 此外， 现有技 术还通过多种单色 LED密集排列来实现彩光混合， 从而达到全彩照明， 但此方法无法进行全 彩色的任意调节， 并且无像素效果。
随着 LED光源的运用， 对于其照明效果要求越来越严格。 丰富多彩的色彩调节、 像素效 果调节以及光线的均匀性和柔和度都成为了 LED投影灯具的重要突破点。
因此， 开发一种能兼具全彩照明和像素效果的 LED投影灯具具有重要的积极意义。 发明内容
本发明要解决的技术问题是为了克服现有技术无法实现全彩照明和像素效果的缺陷， 提 供一种 LED投影灯具。
本发明是通过下述技术方案来解决上述技术问题的： 一种 LED投影灯具， 包括一灯具支 架， 其特点在于， 所述 LED投影灯具还包括若干混光单元， 各所述混光单元包括一透镜组和 若干 LED, 且分散地固定于所述灯具支架的表面； 所述支架表面各处的空间角度均不相同。
其中， 将 LED沿所述支架表面固定， 如贴装， 由于所述支架表面具有不同的空间角度， 因此实现分离 LED灯光， 从而构成不同的像素点。 同理， 混光单元构成一个像素光斑。 较佳地， 各所述混光单元还包括一铝基板， 所述若干 LED固定于所述铝基板上， 所述透 镜组从上方罩住所述若干 LED, 并固定于所述铝基板上。
较佳地， 所述铝基板的周边至少设有两个定位孔， 所述透镜组的周边至少设有两个定位 角， 所述定位角与所述定位孔对应卡扣。
其中， 铝基板具有良好的散热效果， 可以避免 LED灯具过热。
较佳地， 所述支架表面为弧形、 多面体或者伞型。
较佳地， 所述支架表面上分散布置若干固定面， 各所述混光单元对应固定于各所述固定 面上。
较佳地， 所述固定面中间开有一通孔。
其中， 所述通孔用于 LED灯线走线， 便于灯线整齐布置。
较佳地， 所述铝基板、 所述透镜组及所述固定面相互匹配。
较佳地， 所述铝基板和所述支架表面之间的固定方式采用贴装、 铆接、 螺纹连接或一体 成型。
较佳地， 所述混光单元环形排列、 多边形排列或矩阵排列分布于所述支架表面上。
其中， 不同的排列方式可以形成不同的空间角度， 从而实现不同的像素效果。
较佳地， 所述灯具支架下方设有散热筋。
其中， 散热筋可以进一步提高散热性， 保证了良好的散热效果。
较佳地， 所述透镜组的材料为亚克力或 PC材质。
较佳地， 所述若干 LED包括白光 LED及彩光 LED。
其中， 彩色 LED光线通过调和白光 LED光线可以实现全彩色的调节， 还可以实现单个像 素光斑的混光功能、 单个像素光斑的色温调节及显色指数的调节。
本发明的积极进步效果在于：
1、 通过将混光单元固定在灯具支架上的各个不同倾斜角度的固定面上， 使各个混光单元 相互分散排列， 实现不同的像素效果。
2、 通过同时配合使用白光 LED及彩光 LED, 在提供足够光照度的前提下， 还能对各个像 素点实现全彩可调的功能，且通过单色 LED与白光 LED的混光作用，使显色性提高到 90°/。以上。
3、 充分发挥了 LED灯具原有的特点， 与荧光灯相比， 省电节能（耗电量为荧光灯的十分 之一左右）； 耐冲击， 不易破碎； 使用寿命长 （是白炽灯和荧光灯的二十倍左右）。 4、 散热性能好； 环保， 对环境无污染； 不闪烁， 启动速度快。 附图说明
图 1为本发明较佳实施例中灯具支架的示意图。
图 2为本发明较佳实施例中透镜组的示意图。
图 3为本发明较佳实施例中透镜组的侧视图。
图 4为本发明较佳实施例的整体结构示意图。 具体实施方式
下面结合附图给出本发明较佳实施例， 以详细说明本发明的技术方案。
参考图 1至图 4， 本实施例中 LED投影灯具的灯头具有一个弧形支架 1， 其外观形状为一 个类似圆盘状的铝合金散热体， 其上表面有若干个弧面或者多折面的固定面 11。 各个固定面 11中心有一通孔 12， 在各个固定面 11处可以安放与该表面形状相匹配的铝基板 2。
其中， 弧形支架 1可以为单体结构或者分体结构。 当然支架 1也可以为多面体或伞型。 除此之外， 还可以采用其它具有不同空间角度的形状， 都可以达到实现像素效果的目的。
铝基板 2的位置与角度通过一个定位角确定。铝基板 2上固定有多个单色的 LED， 如四个 单色 LED (见图 4)。 LED的色彩可以采用任何单原色， 如红、 绿、 蓝及白等等。 LED的灯线可 以从固定面 11中的通孔 12穿出， 用于链接底盘下部的控制电路。
铝基板 2上固定一个由多个反光杯 31组成的透镜组 3，如四个反光杯 31组成的透镜组（见 图 1 )。 透镜组 3从上方罩住若干 LED光源 21， 并固定于铝基板 2上。 铝基板 2的周边至少设 有两个定位孔，透镜组 3的周边至少设有两个定位角 32。这样，定位角 32与定位孔对应卡扣， 从而精确定位形成一个像素光斑。 透镜组 3用于将四颗单色 LED所发出的光进行精确混合， 实现全彩色照明效果。 为了保证透镜反射光线的效果， 透镜组的材料采用亚克力或 PC材质。
其中， 一铝基板 2、 若干 LED光源 21及一透镜组 3形成一个混光单元。 该混光单元作为 一个整体分散地固定于灯具 1支架的固定面上， 可以环形排列、 多边形排列或矩阵排列分布。
接下来， 将铝基板 2和 LED透镜组 3通过胶水或其它方式固定于弧形支架 1上的固定面 11内。 由于各个固定面 11具有各不相同的空间角度和倾斜方向， 各个固定面 11由中间向边 缘倾斜， 且位于外围的倾斜角度大于内层的倾斜角度， 这样使得经过混色的全彩色光斑在照 明表面分离开来， 实现了像素效果。
当然， 为了保证各个部件间固定紧固， 铝基板 2、 透镜组 3及固定面 11相互匹配。 它们 之间的固定方式可以采用贴装、 铆接或螺纹连接或者与弧形支架 1 形成一体。 而且， 灯具支 架 1下方设有散热筋， 这样可以进一步增加 LED投影灯具的散热效果。
此外， 每个混光单元中的若干 LED包括白光 LED及彩光 LED。彩色 LED为单色光源， 相互 混合形成不同的色彩。然后通过调和白光 LED, 从而实现不同色调， 实现全彩显示。通过这种 方式， 不仅实现了各个光斑的全彩色显示， 还可以实现单个像素光斑的混光功能、 调节单个 像素光斑的色温， 以及调节光的显色指数。 这些功能都可以通过控制电路控制设定。
综上， 本发明 LED投影灯具不仅能够实现像素效果， 而且还能全彩色显示， 并可以对色 彩进行调节。 其结构简单易行， 显著提高了 LED投影灯具的性能。
虽然以上描述了本发明的具体实施方式， 但是本领域的技术人员应当理解， 这些仅是举 例说明， 本发明的保护范围是由所附权利要求书限定的。 本领域的技术人员在不背离本发明 的原理和实质的前提下， 可以对这些实施方式做出多种变更或修改， 但这些变更和修改均落 入本发明的保护范围。

Claims

权利要求书
1、 一种 LED投影灯具， 包括一灯具支架， 其特征在于， 所述 LED投影灯具 还包括若干混光单元， 各所述混光单元包括一透镜组和若干 LED, 且分散地固定 于所述灯具支架的表面； 所述支架表面各处的空间角度均不相同。
2、 如权利要求 1所述的 LED投影灯具， 其特征在于， 各所述混光单元还包 括一铝基板，所述若干 LED固定于所述铝基板上， 所述透镜组从上方罩住所述若 干 LED, 并固定于所述铝基板上。
3、 如权利要求 2所述的 LED投影灯具， 其特征在于， 所述铝基板的周边至 少设有两个定位孔，所述透镜组的周边至少设有两个定位角， 所述定位角与所述 定位孔对应卡扣。
4、 如权利要求 1所述的 LED投影灯具， 其特征在于， 所述支架表面为弧形、 多面体或者伞型。
5、 如权利要求 2所述的 LED投影灯具， 其特征在于， 所述支架表面上分散 布置若干固定面， 各所述混光单元对应固定于各所述固定面上。
6、 如权利要求 5所述的 LED投影灯具， 其特征在于， 所述固定面中间开有 一通孔。
7、 如权利要求 5所述的 LED投影灯具， 其特征在于， 所述铝基板、 所述透 镜组及所述固定面相互匹配。
8、 如权利要求 2或 3所述的 LED投影灯具， 其特征在于， 所述铝基板和所 述支架表面之间的固定方式采用贴装、 铆接或螺纹连接或一体成型。
9、 如权利要求 2所述的 LED投影灯具， 其特征在于， 所述混光单元环形排 列、 多边形排列或矩阵排列分布于所述支架表面上。
10、 如权利要求 1所述的 LED投影灯具， 其特征在于， 所述灯具支架下方设 有散热筋。
11、 如权利要求 1所述的 LED投影灯具， 其特征在于， 所述透镜组的材料为 亚克力或 PC材质。
12、 如权利要求 1所述的 LED投影灯具， 其特征在于， 所述若干 LED包括白 光 LED及彩光 LED。
13、 如权利要求 12所述的 LED投影灯具， 其特征在于， 所述若干白光 LED 及彩光 LED通过组合来调节灯具的色温和显色指数。
PCT/CN2012/070513 2011-04-01 2012-01-18 Led投影灯具 WO2012129976A2 (zh)

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JP2014501404A JP5753965B2 (ja) 2011-04-01 2012-01-18 Ｌｅｄ投影照明装置
US14/009,097 US20140016310A1 (en) 2011-04-01 2012-01-18 Led projection lamp
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US20140016310A1 (en) 2014-01-16
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