WO2013044526A1 - 具有双层灯罩的led灯具 - Google Patents

具有双层灯罩的led灯具 Download PDF

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Publication number
WO2013044526A1
WO2013044526A1 PCT/CN2011/080566 CN2011080566W WO2013044526A1 WO 2013044526 A1 WO2013044526 A1 WO 2013044526A1 CN 2011080566 W CN2011080566 W CN 2011080566W WO 2013044526 A1 WO2013044526 A1 WO 2013044526A1
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Prior art keywords
lamp
light
lamp cover
led
double
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PCT/CN2011/080566
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English (en)
French (fr)
Inventor
安庆照
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东莞健达照明有限公司
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Publication of WO2013044526A1 publication Critical patent/WO2013044526A1/zh

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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
    • F21K9/20—Light sources comprising attachment means
    • F21K9/23—Retrofit light sources for lighting devices with a single fitting for each light source, e.g. for substitution of incandescent lamps with bayonet or threaded fittings
    • F21K9/232—Retrofit light sources for lighting devices with a single fitting for each light source, e.g. for substitution of incandescent lamps with bayonet or threaded fittings specially adapted for generating an essentially omnidirectional light distribution, e.g. with a glass bulb
    • 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
    • F21V3/04—Globes; Bowls; Cover glasses characterised by materials, surface treatments or coatings
    • F21V3/06—Globes; Bowls; Cover glasses characterised by materials, surface treatments or coatings characterised by the material
    • F21V3/08—Globes; Bowls; Cover glasses characterised by materials, surface treatments or coatings characterised by the material the material comprising photoluminescent substances
    • 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 utility model relates to the technical field of LED lamps, in particular to an LED lamp with a double lamp cover.
  • the present application is based on a Chinese Utility Model Patent Application No. 201120372342.8 filed on Sep. 27, 2011, the content of which is hereby incorporated by reference.
  • LED lamps are more and more popular because of their advantages of energy saving, high brightness and low heat generation.
  • LED luminaires convert electrical energy into light energy through LED chips. Depending on the material, LED chips emit visible light that varies in color depending on the range of wavelengths.
  • the processing methods include: filtering light in a certain wavelength range, converting light in a certain wavelength range into light in other wavelength ranges, and combining light in different wavelength ranges to generate light of a specific color.
  • white light for illumination is usually a blue LED chip, and a phosphor is coated on the surface of the LED chip, and the phosphor absorbs a part of the blue light to emit yellow light, thereby mixing white light with yellow light to obtain white light.
  • the phosphor is usually directly coated on a layer of medium, which may be an LED chip or a lens or a lampshade inside, for example, the patent name is "a kind of Chinese Patent Application for LED Light Sources with Optics with Transparent Substrate, Application No.: 200910265305.4, by forming a phosphor film layer on the surface of an optical device, but the process is complicated, and it is difficult to precisely control the phosphor film layer.
  • the thickness, and thus the color controllability is poor, and the coating process of the phosphor layer depends on the shape of the optical device, that is, the process of coating the phosphor needs to be adjusted when the shape of the optical device needs to be changed according to the design purpose. Therefore, the design cost is high and the production process is complicated.
  • the purpose of the utility model is to provide an LED lamp with a double-layer lampshade according to the deficiencies of the prior art, and the structure thereof is scientific, and the phosphor is mixed in the inner lamp cover to avoid the limitation of the phosphor coating process, and the color of the light can be Strong control, with a high degree of product design freedom.
  • an LED lamp having a double-layer lampshade comprising a lamp holder, an LED chip disposed on the lamp holder, and a lamp cover, wherein the lamp cover covers the LED chip, An inner lamp cover is disposed in the lamp cover, and the inner lamp cover covers the LED chip, and the inner lamp cover is a lens mixed with phosphor.
  • the inner lamp cover includes a connecting portion and a light transmitting portion, and the connecting portion is connected to the lamp holder, and the light transmitting portion is a sphere with a cavity therein.
  • the LED chip extends into a cavity in the light transmitting portion.
  • the phosphor is evenly distributed on the inner lamp cover.
  • the thickness of the light transmitting portion is from 1 mm to 4 mm.
  • the thickness of the light transmitting portion is uniform.
  • the thickness of the light transmitting portion is a variation value from the connecting portion to the light transmission
  • the top of the part is gradually thinner.
  • a frosted surface is disposed inside the light transmitting portion.
  • the socket is provided with a card slot, and the connecting portion of the inner lamp cover is engaged with the socket through the card slot.
  • the utility model has the beneficial effects that the utility model comprises: a lamp holder, an LED chip disposed on the lamp holder, and a lamp cover, wherein the lamp cover covers the LED chip, the lamp cover is provided with an inner lamp cover, and the inner lamp cover is The LED chip, the inner lamp cover is a lens mixed with phosphor, and the structure of the utility model is scientific.
  • the utility model comprises: a lamp holder, an LED chip disposed on the lamp holder, and a lamp cover, wherein the lamp cover covers the LED chip, the lamp cover is provided with an inner lamp cover, and the inner lamp cover is The LED chip, the inner lamp cover is a lens mixed with phosphor, and the structure of the utility model is scientific.
  • FIG. 1 is a schematic structural view of an LED lamp with a double-layer lamp cover of the present invention. Included in Figure 1 are:
  • An LED lamp with a double-layer lampshade as shown in FIG. 1 , comprises a lamp holder 1 , an LED chip 2 disposed on the lamp holder 1 , a lamp cover 3 , and the lamp cover 3 covering the LED chip 2, the lampshade 3 is provided with an inner lamp cover 4, the inner lamp cover 4 covers the LED chip 2, the inner lamp cover 4 is a lens mixed with phosphor, and the lens may be plastic or glass.
  • the lens of the example is preferably polycarbonate.
  • the polycarbonate not only has the advantages of high light transmittance, high refractive index, high impact resistance, dimensional stability and easy processing, but also facilitates mixing of the phosphor in the polycarbonate lens. .
  • the structure of the utility model is scientific, the phosphor powder can be mixed by the inner lamp cover, the limitation of the phosphor coating process can be avoided, and the distribution density of the phosphor is controllable, so that the controllability of the color of the light is strong, and by changing the inner lamp cover
  • the shape changes the output light to customize the light characteristics such as color saturation and color temperature, giving the product a high degree of design freedom.
  • the further advantage of the utility model is that the production is convenient.
  • the inner lamp cover 4 includes a connecting portion 41 and a light transmitting portion 42 .
  • the connecting portion 41 is connected to the socket 1
  • the transparent portion 42 is a sphere with a cavity 43 therein.
  • the light emitted from the chip 2 is emitted through the light transmitting portion 42, and the cavity 43 is disposed in the light transmitting portion 42 to facilitate heat dissipation.
  • the LED chip 2 extends into the cavity 43 in the transparent portion 42, and the light of the LED chip 2 is incident on the inner lamp cover 4 from a larger angle, and the inner lamp cover 4 is excited to emit light, thereby illuminating the lamp.
  • the angle is over 180 degrees.
  • the phosphors may be evenly distributed in the inner lamp cover 4, or may be distributed according to a certain regularity. When distributed according to a certain rule, the light can be changed according to the law according to the law, so that the change of the light is rich and colorful. For the convenience of processing, the phosphor in the embodiment is evenly distributed in the inner lamp cover 4.
  • the thickness of the light transmitting portion 42 of the present embodiment is limited to 1 mm to 4 mm.
  • the thickness of the light transmitting portion 42 is uniform, and the light of the lamp is uniformly emitted.
  • the inner side of the light transmitting portion 42 is provided with a frosted surface, and the light is mixed and diffused when the light passes through the frosted surface, and the light is uniform and soft, and does not hurt the eye.
  • the lamp holder 1 is provided with a card slot, and the connecting portion 41 of the inner lamp cover 4 is engaged with the lamp holder 1 through the card slot, which is convenient for assembly during processing and is convenient for replacement.
  • the phosphor of the present invention can be selected according to the required color of the light.
  • the phosphor of the embodiment is a phosphor which can be excited by blue light to generate yellow-green light, so that the light emitted by the lamp is white light.
  • the thickness of the light transmitting portion 42 is a change value, and the thickness gradually changes from the connecting portion 41 to the top of the light transmitting portion 42.
  • This embodiment preferably has the thickness. Gradually thinning, thereby changing the distribution of light by using the inner lamp cover, the other parts are the same as the embodiment, and will not be described again.
  • the present invention includes a lamp holder, an LED chip disposed on the lamp holder, and a lamp cover, the lamp cover covers the LED chip, the lamp cover is provided with an inner lamp cover, and the inner lamp cover covers the LED chip,
  • the inner lamp cover is a lens mixed with phosphor powder.
  • the structure of the utility model is scientific. By mixing the phosphors in the inner lamp cover, the limitation of the phosphor coating process can be avoided, and the distribution density of the phosphor is controllable, thereby making the color of the light controllable. It is more flexible, and the output light can be changed by changing the shape of the inner lamp cover, thereby customizing the light characteristics such as color saturation and color temperature, so that the product has a high degree of design freedom.
  • the invention can be mass-produced and has a good market prospect.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Optics & Photonics (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Abstract

一种具有双层灯罩的LED灯具，包括灯座（1）、设置于灯座上的LED芯片（2）、罩盖LED芯片的灯罩（3），灯罩内设置有内灯罩（4），内灯罩罩盖LED芯片（2），内灯罩为混合有荧光粉的透镜。灯具的结构科学，通过在内灯罩混合荧光粉，可以避免荧光粉涂覆工艺的限制，由于荧光粉的分布浓度可控，从而使得光线色彩的可控性强，并且通过改变内灯罩的形状可改变输出光线，从而定制色彩饱和度、色温等光线特性，使得产品具有高度的设计自由度。

Description

具有双层灯罩的 LED灯具
技术领域
本实用新型涉及 LED灯具技术领域， 尤其涉及一种具有双层灯 罩的 LED灯具。 本申请是基于申请日 2011年 9月 27日的、 申请号 为 201120372342.8的中国实用新型专利申请， 上述专利申请的内容 作为参考引入本文。
背景技术
LED 灯具作为新的照明光源， 由于具有节能、 亮度高、 发热量 低等优点， 越来越收到人们的亲睐。 LED灯具通过 LED芯片将电能 转化为光能， LED 芯片根据材料的不同， 其发出的可见光由于波长 的范围不同而显现出不同的颜色。
为了使 LED灯的发出光线的颜色符合人们的需求， 常常需要对 LED灯发出的光线进行处理。 处理方式有： 过滤某个波长范围内的 光线、 将某个波长范围内的光线转化为其他波长范围的光线， 以及 将不同波长范围内的光线进行组合， 从而产生特定颜色的光线等。 例如用于照明的白光，通常是采用蓝光 LED芯片， 并在 LED芯片表 面涂覆荧光粉， 荧光粉吸收部分蓝关后发出黄光， 从而以蓝光与黄 光混合得到白光。
现有技术中通常是将荧光粉直接涂覆在一层介质上， 该介质可 以为 LED芯片， 也可以为透镜或灯罩内侧， 例如专利名称为"一种使 用具有透明基材的光学器件的 LED光源"的中国发明专利申请，其申 请号： 200910265305.4， 即通过在光学器材表面形成荧光粉膜层， 但 是该工艺较为复杂， 难以精确控制荧光粉膜层的厚度， 从而颜色可 控性较差， 并且荧光粉层的涂覆工艺依赖于该光学器材的形状， 即 根据设计目的需要改变该光学器材的形状时， 上述涂覆荧光粉的过 程也需要进行调整， 从而使得设计成本较高， 生产过程复杂。
实用新型内容
本实用新型的目的就是针对现有技术存在的不足而提供一种具 有双层灯罩的 LED灯具， 其结构科学， 在内灯罩混合有荧光粉， 避 免荧光粉涂覆工艺的限制， 光线色彩的可控性较强， 具有高度的产 品设计自由度。
为了实现上述目的， 本实用新型采用的技术方案是： 一种具有 双层灯罩的 LED灯具， 包括灯座、 设置于灯座上的 LED芯片、 灯 罩， 所述灯罩罩盖所述 LED芯片， 所述灯罩内设置有内灯罩， 所述 内灯罩罩盖所述 LED芯片， 所述内灯罩为混合有荧光粉的透镜。
所述内灯罩包括连接部、透光部， 所述连接部与所述灯座连接， 所述透光部为内设空腔的球体。
所述 LED芯片伸入所述透光部内的空腔。
所述荧光粉均匀分布于所述内灯罩。
所述透光部的厚度 lmm~4mm。
所述透光部的厚度均匀。
所述透光部的厚度为变化值， 该厚度从所述连接部至所述透光 部的顶部逐渐变薄。
所述透光部内侧设置有磨砂面。
所述灯座设置有卡槽， 所述内灯罩的连接部通过所述卡槽与所 述灯座卡接。
本实用新型有益效果在于： 本实用新型包括灯座、 设置于灯座 上的 LED芯片、 灯罩， 所述灯罩罩盖所述 LED芯片， 所述灯罩内 设置有内灯罩， 所述内灯罩罩盖所述 LED芯片， 所述内灯罩为混合 有荧光粉的透镜， 本实用新型结构科学， 通过在内灯罩混合荧光粉， 可以避免荧光粉涂覆工艺的限制， 由于荧光粉的分布浓度可控， 从 而使得光线色彩的可控性较强， 并且通过改变内灯罩的形状可改变 输出光线， 从而定制色彩饱和度、 色温等光线特性， 使得产品具有 高度的设计自由度。
附图说明
图 1是本实用新型的具有双层灯罩的 LED灯具的结构示意图。 在图 1中包括有：
LED芯片
内灯罩
Figure imgf000005_0001
透光部 具体实施方式
下面结合附图对本实用新型作进一步的说明
实施例一。 本实用新型的一种具有双层灯罩的 LED灯具， 如图 1所示， 其 包括灯座 1、 设置于灯座 1上的 LED芯片 2、 灯罩 3， 所述灯罩 3 罩盖所述 LED芯片 2，所述灯罩 3内设置有内灯罩 4，所述内灯罩 4 罩盖所述 LED芯片 2， 所述内灯罩 4为混合有荧光粉的透镜， 透镜 可以为塑料也可以为玻璃， 本实施例的透镜优选为聚碳酸酯， 聚碳 酸酯不仅具有高透光率、 高折射率、 高抗冲性、 尺寸稳定性及易加 工成型等优点， 也便于将荧光粉混合在聚碳酸酯透镜中。 本实用新 型结构科学， 通过在内灯罩混合荧光粉， 可以避免荧光粉涂覆工艺 的限制， 由于荧光粉的分布浓度可控， 从而使得光线色彩的可控性 较强， 并且通过改变内灯罩的形状可改变输出光线， 从而定制色彩 饱和度、 色温等光线特性， 使得产品具有高度的设计自由度。 相对 于现有技术中涂覆荧光粉的加工过程， 本实用新型进一步的优点在 于生产便捷， 在生产本实用新型的具有双层灯罩的 LED灯具时， 可 以分别制作各部分， 然后将内灯罩组装在灯具上。
如图 1所示， 所述内灯罩 4包括连接部 41、 透光部 42， 所述连 接部 41与所述灯座 1连接， 所述透光部 42为内设空腔 43的球体， LED芯片 2发出的光通过透光部 42射出， 透光部 42内设置有空腔 43可以方便散热。
进一步的， 所述 LED芯片 2伸入所述透光部 42内的空腔 43， LED芯片 2的光从更大的角度射入内灯罩 4， 激发内灯罩 4全面发 光， 从而使灯具的发光角度超过 180度。
荧光粉在内灯罩 4内可以均匀分布，也可以按一定的规律分布。 当按照一定的规律分布时， 可以使灯光相应地按规律变化， 从而使 灯光的变化丰富多彩， 为了加工方便， 本实施例中荧光粉均匀分布 于所述内灯罩 4。
当厚度较大时， 光通量变小， 本实施例的透光部 42的厚度限定 在 lmm~4mm。
在本实施例中， 透光部 42的厚度均匀， 灯具的光线均匀射出。 所述透光部 42内侧设置有磨砂面，光线经过磨砂面时发生漫射 混光， 光线均匀、 柔和， 不伤眼。
所述灯座 1设置有卡槽，所述内灯罩 4的连接部 41通过所述卡 槽与所述灯座 1卡接， 加工时组装方便， 并且方便更换。
本实用新型的荧光粉可以根据需要的灯光色彩进行选用， 本实 施例的荧光粉为可被蓝光激发产生黄绿光的荧光粉， 从而使灯具发 出的光为白光。
实施例二。
本实施例与实施例一的不同在于：所述透光部 42的厚度为变化 值， 该厚度从所述连接部 41至所述透光部 42的顶部逐渐变化， 本 实施例优选为该厚度逐渐变薄， 从而利用内灯罩改变光线的分布， 其他部分与实施例相同， 不再赘述。
最后应当说明的是， 以上实施例仅用以说明本实用新型的技术 方案， 而非对本实用新型保护范围的限制， 尽管参照较佳实施例对 本实用新型作了详细地说明， 本领域的普通技术人员应当理解， 可 以对本实用新型的技术方案进行修改或者等同替换， 而不脱离本实 用新型技术方案的实质和范围。
工业应用性
本实用新型包括灯座、 设置于灯座上的 LED芯片、 灯罩， 所述 灯罩罩盖所述 LED芯片， 所述灯罩内设置有内灯罩， 所述内灯罩罩 盖所述 LED芯片， 所述内灯罩为混合有荧光粉的透镜， 本实用新型 结构科学， 通过在内灯罩混合荧光粉， 可以避免荧光粉涂覆工艺的 限制， 由于荧光粉的分布浓度可控， 从而使得光线色彩的可控性较 强， 并且通过改变内灯罩的形状可改变输出光线， 从而定制色彩饱 和度、 色温等光线特性， 使得产品具有高度的设计自由度。 本发明 创造可以批量生产， 具有良好的市场前景。

Claims

权 利 要 求 书
1、 一种具有双层灯罩的 LED灯具， 包括灯座 （1 )、 设置于灯 座 （1 ) 上的 LED 芯片 （2)、 灯罩 （3 )， 所述灯罩 （3 ) 罩盖所述 LED芯片 （2)， 其特征在于： 所述灯罩 （3 ) 内设置有内灯罩 （4)， 所述内灯罩 （4) 罩盖所述 LED芯片 （2)， 所述内灯罩 （4) 为混合 有荧光粉的透镜。
2、 根据权利要求 1所述的具有双层灯罩的 LED灯具， 其特征 在于： 所述内灯罩 （4) 包括连接部 （41 )、 透光部 （42)， 所述连接 部（41 )与所述灯座（1 )连接， 所述透光部（42)为内设空腔（43 ) 的球体。
3、 根据权利要求 2所述的具有双层灯罩的 LED灯具， 其特征 在于： 所述 LED芯片 （2) 伸入所述透光部 （42) 内的空腔 （43 )。
4、 根据权利要求 2所述的具有双层灯罩的 LED灯具， 其特征 在于： 所述荧光粉均匀分布于所述内灯罩 （4)。
5、 根据权利要求 2所述的具有双层灯罩的 LED灯具， 其特征 在于： 所述透光部 （42) 的厚度 lmm~4mm。
6、 根据权利要求 5所述的具有双层灯罩的 LED灯具， 其特征 在于： 所述透光部 （42) 的厚度均匀。
7、 根据权利要求 5所述的具有双层灯罩的 LED灯具， 其特征 在于：所述透光部（42)的厚度为变化值，该厚度从所述连接部（41 ) 至所述透光部 （42) 的顶部逐渐变薄。
8、 根据权利要求 2所述的具有双层灯罩的 LED灯具， 其特征 在于： 所述透光部 （42) 内侧设置有磨砂面。
9、 根据权利要求 2所述的具有双层灯罩的 LED灯具， 其特征 在于： 所述灯座 （1 ) 设置有卡槽， 所述内灯罩 （4) 的连接部 （41 ) 通过所述卡槽与所述灯座 （1 ) 卡接。
PCT/CN2011/080566 2011-09-27 2011-10-09 具有双层灯罩的led灯具 WO2013044526A1 (zh)

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