WO2009121217A1 - 一种led灯具 - Google Patents
一种led灯具 Download PDFInfo
- Publication number
- WO2009121217A1 WO2009121217A1 PCT/CN2008/001035 CN2008001035W WO2009121217A1 WO 2009121217 A1 WO2009121217 A1 WO 2009121217A1 CN 2008001035 W CN2008001035 W CN 2008001035W WO 2009121217 A1 WO2009121217 A1 WO 2009121217A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- led
- light
- white
- red
- green
- Prior art date
Links
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
- F21V5/00—Refractors for light sources
-
- 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 invention relates to a luminaire, in particular to a luminaire using an LED as a light source. Background technique
- LED from English LIGHT EMITTING DIODE abbreviation, meaning LED.
- the simplest structure of a light-emitting diode includes a P-type semiconductor, an N-type semiconductor, and a PN junction formed therebetween. When a current is passed through the diode, at the PN junction, charge carriers are generated, that is, electrons and Holes, electrons combine with holes and release energy in the form of photons.
- LED lamps have the advantages of long life, power saving, durability, robustness, fast response, low waste heat and suitable for mass production compared with ordinary tungsten lamps and white lamps such as fluorescent lamps, which can be gradually promoted in the field of illumination. .
- the color rendering index LED light is monochromatic light
- the color distortion of the object under the illumination of monochromatic light is serious, although many technologies now use the method of light mixing to produce white LED, such as A white LED made by the Japanese company and the YAG yellow phosphor method. Because its white light contains only blue and yellow spectrum, the color rendering index is still much lower than that of traditional lamps, and there are some RGB three-chip or phosphor.
- the white LED produced by the method has a high color rendering index but a very high cost, and these three primary color white LEDs have the problem of different attenuation, and thus are not widely promoted in the general illumination field.
- White LED light effects and color temperature also have technical problems.
- Low color temperature white LEDs can create a warm atmosphere. There are a lot of demands in furniture and other occasions.
- the luminous efficacy of LEDs is currently not as high as that of high color temperature white LEDs. Therefore, improving the light efficiency of low color temperature white LED lamps has become a strong demand in the industry. Summary of the invention
- the technical problem to be solved by the present invention is to provide a white LED lamp with low color temperature, high color rendering index and high luminous efficiency.
- the present invention solves the above technical problems by the following technical solutions - an LED lamp comprising a lamp housing and an LED module mounted in the lamp housing, the LED module comprising at least a white LED, a red LED and a green LED Three kinds.
- the invention has the beneficial effects that since the light contains red and green spectrum, the color rendering index is higher than that of the LED with only two colors; since the white light LED is matched with the red light green LED to control the color temperature, the light effect is not affected.
- the effect of the phosphor is higher than that of similar products at the same low color temperature.
- the area of the color on the chromaticity diagram is: X: 0.34 y: 0.37 , x: 0.43 y: 0.36 , ⁇ : 0.35 y: 0.42 , x: 0.43 y: 0.4, the color rendering index is not lower than 80, and the color temperature is about 3500K.
- the luminous efficacy is not less than 501m/W.
- the invention can also be improved as follows:
- the light intensity ratio of the white LED, the red LED and the green LED is 7 to 8; 1.4 to 2: 1.
- the light intensity ratio of the white LED, the red LED, and the green LED is further set to 7:2:1.
- a astigmatism plate is further disposed in front of the LED module.
- a heat dissipation fin is connected to the LED module.
- the area of the light color on the chromaticity diagram is: X: 0.34 y: 0.37 , x: 0.43 y: 0.36 , ⁇ : 0.35 y: 0.42 , ⁇ : 0.43 y: 0.4.
- Figure 1 is a schematic view of the overall structure of the present invention
- Figure 2 is a cross-sectional view of Figure 1;
- Figure 3 is a schematic exploded view of the present invention.
- Figure 4 is an area of the light color of the present invention on a chromaticity diagram. detailed description
- An LED lamp comprises a lamp housing 1 and an LED module 2 mounted in the lamp housing, the LED module comprising at least a white LED, a green LED and a red LED.
- the lamp housing 1 is a cylindrical shape having a condensing structure, and the inner wall is coated with a reflective material or directly polished to have a good reflective effect.
- the LED module 2 includes an aluminum substrate 21 and a plurality of LEDs 22 mounted on the aluminum substrate 21.
- the plurality of LEDs 22 include at least three kinds of white LEDs, red LEDs, and green LEDs, and the white LEDs, the red LEDs, and the The luminous ratio of the three green LEDs adjusts the color temperature of the lamp.
- the color temperature is about 3500K.
- the area of the light color on the chromaticity diagram is: x: 0.34 y: 0.37 , x: 0.43 y: 0.36 , x: 0.35 y: 0.42 , x: 0.43 y: 0.4, because the light contains red Green spectrum, so its color rendering index is higher than that of only two color LEDs.
- the white LED is used to control the color temperature with red light green LED. The light effect is not affected by the phosphor, so the light is also at the same low color temperature. It has higher luminous efficiency than similar products.
- the diffusing plate 7 can also be arranged at the light exit of the lamp housing 1 in front of the LED module.
- the upper part of the aluminum substrate 21 can also be provided with a heat conducting plate 3, and the heat radiating plate 3 is further connected with the heat radiating fins 4, so that the heat dissipation efficiency is improved when the high power LED is used.
- a top cover 5 may be disposed on the upper portion of the heat dissipation fin 4, and a hook 6 is disposed on the top cover 5.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (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)
Description
一种 LED灯具 技术领域
本发明涉及一种灯具, 特别涉及一种使用 LED为光源的灯具。 背景技术
LED来自英文 LIGHT EMITTING DIODE的缩写, 意为发光二极管。 最简单的发光二极 管的结构包括, P-型半导体、 N-型半导体及两者之间所形成的 PN结, 当电流通过二极管 时, 在上述 PN结处, 便产生电荷载子, 即电子与空穴, 电子与空穴结合并以光子的形式 释放出能量。 LED灯与普通的钨丝灯、确荧 1光灯等白光灯相比具有寿命长、 省电、 耐用、 牢 靠、 反应快、 低废热和适合于批量生产等优点, 从而得以逐渐在照明领域推广。
. 但是在推广的过程中却发现, 采用 LED为光源的灯具同时存在很多技术瓶颈, 许多光 本
学参数难以超越传统的灯具, 这也是到目前为至 LED灯具无法完全取代传统灯具的原因。 比如说显色指数, LED灯光为单色光, 无法还原被照射物体的真实颜色, 在单色光照射下 物体的颜色失真严重, 虽然现在很多技术采用混光的方法制造出了白光 LED,如日本曰亚 公司采用蓝色晶片与 YAG黄色荧光粉方法制造的白光 LED,因为其白光中仅含有蓝色和黄 色光谱, 显色指数仍大大低于传统灯具, 还有一些 RGB三晶片或荧光粉的方法制造的白光 LED,虽然其显色指数有所提高但成本却非常高,且这些三基色的白光 LED都存在衰减不一 的问题, 故而也没有在普通照明领域大量推广。 白光 LED光效与色温上也同样存在技术问 题, 低色温的白光 LED能够营造温馨的环境气氛, 在家具等场合有大量的需求, 但由于荧 光粉激发效率的特性,在封装技术上低色温白光 LED的光效目前还无法做到与高色温白光 LED—样高, 因此, 提高低色温白光 LED灯具的光效也就成了业界的一项强劲需求。 发明内容
本发明要解决的技术问题是:提供一种低色温,高显色指数,高光效的白光 LED灯具。 本发明通过下述技术方案来解决上述的技术问题- 一种 LED灯具, 包括灯壳和安装在灯壳内的 LED模组, 所述 LED模组至少包括白光 LED, 红光 LED和绿光 LED三种。
本发明的有益效果是, 由于灯光中包含红绿光谱, 故其显色指数比仅有两种颜色 的 LED高; 由于采用白光 LED配红光绿光 LED的方法控制色温,其光效不受荧光粉的影 响, 故在同样低色温的情况下较同类产品光效高。 以下是本发明的部分测试参数: 灯光颜
色在色度图上的区域为: X: 0.34 y: 0.37 , x: 0.43 y: 0.36 , χ: 0.35 y: 0.42 , x: 0.43 y: 0.4, 显色指数不低 80, 色温 3500K在左右, 光效不低于 501m/W。
本发明还可以做如下改进:
所述白光 LED、 红光 LED和绿光 LED的光强度比为 7〜8; 1.4〜2: 1。
所述白光 LED、 红光 LED和绿光 LED的光强度比进一步设置为 7: 2: 1。
所述 LED模组前还设置有散光板。
所述 LED模组上连接有散热鳍片。
所述灯光颜色在色度图上的区域为: X: 0.34 y: 0.37 , x: 0.43 y: 0.36 , χ: 0.35 y: 0.42 , χ: 0.43 y: 0.4。 附图说明
图 1是本发明的整体结构示意图;
图 2是图 1的剖视图;
图 3是本发明的分解结构示意图;
图 4是本发明的灯光颜色在色度图上的区域。 具体实施方式
下面结合附图对本发明做进一步说明。
一种 LED灯具, 包括灯壳 1和安装在灯壳内的 LED模组 2, 所述 LED模组至少包括白 光 LED、 绿光 LED和红光 LED。
参照图 1、 图 2和图 3, 灯壳 1为具有聚光结构的圆筒状, 内壁涂覆有反光材料或直 接打磨至具有良好的反光作用。 LED模组 2包括铝基板 21和安装在铝基板 21上的多颗 LED 22,多颗 LED 22中至少包括白光 LED、 红光 LED和绿光 LED三种, 通过调节白光 LED、 红 光 LED和绿光 LED三者的发光比例来调节灯具的色温, 色温在 3500K左右, 优选的光强比 例为: 白光: 红光: 绿光 =8〜15: 1: 1, 其中最佳的比例为 7: 2: 1。 如图 4所示, 灯光 颜色在色度图上的区域为: x: 0.34 y: 0.37 , x: 0.43 y: 0.36 , x: 0.35 y: 0.42 , x: 0.43 y: 0.4, 由于灯光中包含红绿光谱, 故其显色指数比仅含有两种颜色 LED高, 采用白光 LED配红光绿光 LED的方法控制色温, 其光效不受荧光粉的影响,故在同样低色 温的情况下光效较同类产品光效高。 为使灯光更柔和均匀, 还可以在 LED模组前即灯壳 1 的出光口设置散光板 7。铝基板 21上部还可以设置导热板 3, 导热板 3上再连接散热鳍片 4, 这样当使用高功率 LED时有利于提高散热效率。 为方便安装, 还可以在散热鳍片 4上 部设置顶盖 5, 顶盖 5上设置挂钩 6。
Claims
权利要求 、 一种 LED灯具, 包括灯壳和安装在灯壳内的 LED模组, 其特征在于: 所述 LED模组 至少包括白光 LED、 红光 LED和绿光 LED三种。
、 根据权利要求 1所述的一种 LED灯具, 其特征在于: 所述白光 LED、 红光 LED和绿 光 LED的光强度比为 7〜8: 1. 4〜2: 1。
、 根据权利要求 2所述的一种 LED灯具, 其特征在于: 所述白光 LED、 红光 LED和绿 光 LED的光强度比为 7: 2: 1。
、 根据权利要求 1或 2或 3任一项所述的一种 LED灯具,其特征在于:所述 LED模组 前还设置有散光板。
、 根据权利要求 1所述的一种 LED灯具,其特征在于:所述 LED模组上连接有散热鳍 片。
、 根据权利要求 1所述的一种 LED灯具,其特征在于:所述灯光颜色在色度图上的区 域为: X: 0. 34 y : 0. 37 , x : 0. 43 y: 0. 36 , χ : 0. 35 y : 0. 42, χ : 0. 43 y : 0. 4。
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CN200810027162.9 | 2008-03-31 | ||
CNA2008100271629A CN101255956A (zh) | 2008-03-31 | 2008-03-31 | 一种led灯具 |
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Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
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CN101968171A (zh) * | 2010-08-09 | 2011-02-09 | 上海光隧光电科技有限公司 | 能实现高显色指数的led照明光源装置 |
CN102734646A (zh) * | 2011-04-01 | 2012-10-17 | 上海广茂达光艺科技股份有限公司 | Led筒灯 |
DE102013005932A1 (de) | 2013-04-05 | 2014-10-23 | Cooper Crouse-Hinds Gmbh | LED-Modul, Leuchte mit einem solchen und Verfahren zur Beeinflussung eines Lichtspektrums |
CN104633499B (zh) * | 2015-02-04 | 2016-10-05 | 余建华 | 一种高显色指数的led光源模组及led灯具 |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2002270899A (ja) * | 2001-03-14 | 2002-09-20 | Mitsubishi Electric Lighting Corp | 色温度可変led光源モジュール |
JP2004253309A (ja) * | 2003-02-21 | 2004-09-09 | Nichia Chem Ind Ltd | 演色性を備えた特殊用途led照明 |
CN1668158A (zh) * | 2004-03-11 | 2005-09-14 | 安捷伦科技有限公司 | 使用发光二极管产生白光的系统和方法 |
US20060056201A1 (en) * | 2004-09-16 | 2006-03-16 | Chih-Li Chang | Backlight modules |
US20060209538A1 (en) * | 2004-11-17 | 2006-09-21 | Hannstar Display Corp. | Backlight modules |
CN1949507A (zh) * | 2005-10-12 | 2007-04-18 | 林志泽 | 可调整色温的发光二极管装置 |
CN1968556A (zh) * | 2005-11-14 | 2007-05-23 | 安捷伦科技有限公司 | 用于生成白光的系统和方法 |
WO2007071397A1 (en) * | 2005-12-21 | 2007-06-28 | Perkinelmer Elcos Gmbh | Illumination device, illumination control apparatus, illumination system |
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2008
- 2008-03-31 CN CNA2008100271629A patent/CN101255956A/zh active Pending
- 2008-05-28 WO PCT/CN2008/001035 patent/WO2009121217A1/zh active Application Filing
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2002270899A (ja) * | 2001-03-14 | 2002-09-20 | Mitsubishi Electric Lighting Corp | 色温度可変led光源モジュール |
JP2004253309A (ja) * | 2003-02-21 | 2004-09-09 | Nichia Chem Ind Ltd | 演色性を備えた特殊用途led照明 |
CN1668158A (zh) * | 2004-03-11 | 2005-09-14 | 安捷伦科技有限公司 | 使用发光二极管产生白光的系统和方法 |
US20060056201A1 (en) * | 2004-09-16 | 2006-03-16 | Chih-Li Chang | Backlight modules |
US20060209538A1 (en) * | 2004-11-17 | 2006-09-21 | Hannstar Display Corp. | Backlight modules |
CN1949507A (zh) * | 2005-10-12 | 2007-04-18 | 林志泽 | 可调整色温的发光二极管装置 |
CN1968556A (zh) * | 2005-11-14 | 2007-05-23 | 安捷伦科技有限公司 | 用于生成白光的系统和方法 |
WO2007071397A1 (en) * | 2005-12-21 | 2007-06-28 | Perkinelmer Elcos Gmbh | Illumination device, illumination control apparatus, illumination system |
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