WO2013177735A1 - 一种led光源及其照明装置 - Google Patents

一种led光源及其照明装置 Download PDF

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WO2013177735A1
WO2013177735A1 PCT/CN2012/076151 CN2012076151W WO2013177735A1 WO 2013177735 A1 WO2013177735 A1 WO 2013177735A1 CN 2012076151 W CN2012076151 W CN 2012076151W WO 2013177735 A1 WO2013177735 A1 WO 2013177735A1
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led
light source
light
led chip
bracket
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PCT/CN2012/076151
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English (en)
French (fr)
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薛信燊
赵西刚
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深圳市众明半导体照明有限公司
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Priority to PCT/CN2012/076151 priority Critical patent/WO2013177735A1/zh
Publication of WO2013177735A1 publication Critical patent/WO2013177735A1/zh

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    • 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
    • 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
    • F21Y2107/90—Light sources with three-dimensionally disposed light-generating elements on two opposite sides of supports or substrates
    • 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]

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  • the present invention relates to the field of luminaire illumination, and more particularly to an LED light source and illumination device.
  • the LED light source needs to be optically designed twice or more, so that not only the components of the LED are increased, the structure and the processing process are complicated, but also the cost of the LED is increased, and After multiple optical treatments, the luminous flux of the LED light source is reduced, and the advantage of LED energy saving cannot be fully utilized.
  • Patent number is CN
  • the Chinese patent of 201344485Y discloses a way of realizing large-angle illumination, but the processing method of this method is complicated, which is not conducive to mass production. Compared with traditional lamps, the size is larger and the cost of LED is higher.
  • Patent number is CN 201868426 U's Chinese patent discloses a way to improve light utilization, but it is well known that not all chips can emit light at the bottom, and the light at the bottom of the chip is only a small part of the total amount of light, and the patent will cause The light on the back of the bracket is dark, and it is impossible to achieve the same effect in all directions.
  • Patent number is CN 202101088
  • the Chinese patent of U discloses a way of attaching LED light sources on both sides, but it is well known that the angle of a single LED does not exceed 180°, generally around 120°, which can only form two-sided illumination, which cannot reach 360° of full angle. Glowing.
  • the technical problem to be solved by the present invention is to provide an LED light source and a lighting device for the above-mentioned drawbacks of the prior art.
  • an LED LED light source comprising: a light-permeable bracket, an LED chip fixed on the front and back sides of the bracket, and a cover disposed on the bracket A light-emitting cover that is excited by light emitted by the LED chip to emit light.
  • the light-emitting cover includes a body, and a light-emitting layer coated on the inner surface of the body and excited by light emitted by the LED chip to emit light.
  • the LED light source of the present invention wherein the light-emitting cover comprises a light-emitting cover integrally molded by a light-permeable body and a light-emitting material mixed in the body.
  • the LED light source of the present invention wherein the body of the light-emitting cover comprises a body made of silica gel, epoxy resin, glass or a mixture of silica gel and epoxy resin.
  • the LED light source of the present invention wherein the LED chip comprises a combination of at least two of a red LED chip, a blue LED chip, or a green LED chip.
  • the LED chips fixed on either side of the bracket each include a red LED chip and a blue LED chip which are arranged on the side of the bracket.
  • the ratio of the number of the blue LED chip to the red LED chip is 1:1-6:1.
  • the LED light source further includes a thermistor disposed on the bracket, and the thermistor is electrically connected to the LED chip.
  • the LED light source of the present invention wherein the bracket comprises a ceramic bracket, a glass bracket, a sapphire bracket or a high thermal conductive transparent plastic bracket.
  • Another technical solution adopted by the present invention to solve the technical problem is to construct a lighting device comprising a bulb base and an LED light source as described above disposed on the bulb base.
  • LED chips are respectively attached to both sides of the light-transmitting bracket, and the light emitted by the LED chip is wrapped by the outer light-emitting cover after 360°, The illumination effect of the full-angle illumination is achieved, and the illumination angle can reach 360°.
  • Figure 1 is a front elevational view of a preferred embodiment of an LED light source of the present invention
  • FIG. 2 is a top plan view of a preferred embodiment of an LED light source in accordance with the present invention.
  • the LED light source includes a light-permeable bracket 100, an LED chip fixed on the front and back sides of the bracket 100, and a cover disposed on the periphery of the transparent bracket 100.
  • a luminescent cover 200 that can be excited by light emitted by the LED chip to emit light. It is worth noting that the LED chip can be attached to the front and back sides of the bracket 100 by means of double-sided solid crystal bonding wires, and can also be fixed by other means.
  • the light-permeable bracket 100 can ensure that the light at the bottom of the LED chip can also be transmitted, avoiding the light emitted by the LED chip on the front and back sides to form a butterfly spot, thereby affecting the realization of the full-angle illumination, and on both sides of the bracket 100.
  • Setting the LED chip on the top can expand the illumination range of the LED light source.
  • the illuminating cover 200 which can be excited by the light emitted by the LED chip to emit light, can further enhance the stereoscopic illuminating effect of the entire light source.
  • the light-emitting cover 200 includes a body, and a light-emitting layer coated on the inner surface of the body and excited by light emitted from the LED chip.
  • the luminescent layer is mainly formed by a material that can be excited by the light emitted by the LED chip.
  • the main component of the existing luminescent material is a rare earth metal compound and a semiconductor material, and the luminescent material belongs to the prior art, and is in actual use. Can be used as needed.
  • the illuminating cover 200 may also adopt a illuminating cover integrally molded by a permeable body and a luminescent material mixed in the body.
  • the light-emitting cover 200 of this form can keep the light-emitting layer (for example, phosphor) away from the heat-generating LED chip, thereby reducing the heat attenuation of the light-emitting layer and increasing the service life of the LED light source. No matter which form of the illuminating cover 200 is used, the entire LED light source can achieve the illumination effect of the stereo illuminating light source.
  • the light-emitting layer for example, phosphor
  • the body may be made of silica gel, epoxy resin, glass or a body made of a mixture of silica gel and epoxy resin.
  • the above LED chip comprises a combination of at least two of a red LED chip 102, a blue LED chip 101, or a green LED chip.
  • the LED chips fixed on either side of the bracket 100 each include a red LED chip 102 and a blue LED chip 101 that are spaced apart from each other on the side of the bracket 100. That is, the red LED chip 102 and the blue LED chip 101 are arranged in this manner regardless of the front side or the side surface of the holder 100. This misalignment is arranged to better achieve stereoscopic illumination.
  • the excitation wavelength of the blue LED chip 101 is 380 nm to 470 nm
  • the excitation wavelength of the red LED chip 102 is 590 nm to 650 nm.
  • the blue LED chip 101 emits blue light
  • the blue light excites the light-emitting layer to form high-brightness white light, and then mixes with the red light emitted by the red LED chip 102 to form low-color temperature white light with high brightness and high color rendering.
  • the number ratio of the blue LED chip 101 to the red LED chip 102 is preferably maintained in the range of 1:1 to 6:1.
  • the ratio of the number of the blue LED chip 101 to the red LED chip 102 is 2:1, that is, there is one red LED chip 102 in the middle of each pair of blue LED chips 101 (see FIG. 1 and FIG. 1). 2)).
  • the LED light source further includes a thermistor 103 disposed on the bracket 100.
  • the thermistor 103 is electrically connected to the LED chip, and the electrical connection here includes parallel or series connection.
  • the effect of adjusting the current of the LED chip can be achieved without using an external circuit, and the problem that the brightness of the blue LED chip 101 and the red LED chip 102 is inconsistent by temperature is solved, thereby solving the problem.
  • the problem of color temperature drift in light can effectively improve thermal stability. For example, when the temperature rises, the brightness of the red LED chip 102 decreases, and the thermistor 103 changes its resistance value as the temperature changes, so that the flow of the red LED chip 102 can be increased. The current, thereby increasing the brightness of the red LED chip 102, maintains the brightness of the red LED chip 102, and achieves excellent thermal stability.
  • the light transmissive support 100 can be a ceramic support, a glass support, a sapphire support or a highly thermally conductive transparent plastic support.
  • the lighting device includes a bulb base and an LED light source as described above disposed on the bulb base.
  • the LED light source can be inserted into the bulb base and electrically connected to the driving circuit board of the bulb. Since the LED light source emits light at a full angle, the effect of the traditional incandescent lamp can be achieved, and the use is convenient, fast and reduces. The complicated process of traditional LEDs to be applied to the board.

Abstract

一种LED光源及照明装置，其中，LED光源包括可透光的支架（100）、固定在支架正反两侧面上的LED芯片（101、102）、以及罩设在支架外围的发光罩（200）。在透光的支架（100）两侧面上分别贴附有LED芯片（101、102），LED芯片发出的光经过360°包覆在外面的发光罩后，可以达到全角度发光的照射效果，发光角度可达到360°。

Description

一种LED光源及其照明装置 技术领域
本发明涉及灯具照明领域，更具体地说，涉及一种LED光源和照明装置。
背景技术
现有技术中，在一些需要大角度发光的场合中，LED光源需进行两次以上的光学设计，这样，不仅LED的零部件增多，结构和加工工艺复杂，而且会使得LED的成本增加，且经过多次光学处理后，LED光源的光通量降低，导致LED节能的优势无法得到充分发挥。
专利号为CN 201344485Y的中国专利公开了一种实现大角度发光的方式，但此种方式加工工艺较复杂，不利于大量生产。且相比于传统灯具，其尺寸较大，LED成本偏高。专利号为CN 201868426 U的中国专利公开了一种提升光利用率的方式，但总所周知，并不是所有芯片底部都可以发光，而且芯片底部的光也只是占总出光量的很小一部分，且该专利会造成支架背部的光线较暗，无法达到各个方向出光一致的效果。专利号为CN 202101088 U的中国专利公开了一种两面贴附LED光源的方式，但众所周知，单颗LED的角度不会超过180°，一般在120°左右，该方式只能形成两面发光，无法达到全角度360°发光。
发明内容
本发明要解决的技术问题在于，针对现有技术的上述缺陷，提供一种LED光源和照明装置。
本发明解决其技术问题所采用的技术方案是：构造一种LEDLED光源，包括可透光的支架、固定在所述支架正反两侧面上的LED芯片、以及罩设在所述支架上的可被所述LED芯片发出的光线激发而发光的发光罩。
本发明所述的LED光源，其中，所述发光罩包括本体、和涂覆在所述本体内表面上的、可被所述LED芯片发出的光线激发而发光的发光层。
本发明所述的LED光源，其中，所述发光罩包括由可透光的本体、和参杂在所述本体中的发光材料一体注塑成型的发光罩。
本发明所述的LED光源，其中，所述发光罩的本体包括由硅胶、环氧树脂、玻璃或由硅胶与环氧树脂的混合物制成的本体。
本发明所述的LED光源，其中，所述LED芯片包括红光LED芯片、蓝光LED芯片、或绿光LED芯片中至少两种的组合。
本发明所述的LED光源，其中，固定在所述支架任意一侧面上的所述LED芯片均包括间隔排列设置在所述支架侧面上的红光LED芯片和蓝光LED芯片。
本发明所述的LED光源，其中，所述蓝光LED芯片与所述红光LED芯片的数量比为1:1-6:1。
本发明所述的LED光源，其中，该LED光源还包括设置在所述支架上的热敏电阻，所述热敏电阻与所述LED芯片电性连接。
本发明所述的LED光源，其中，所述支架包括陶瓷支架、玻璃支架、蓝宝石支架或高导热透明塑胶支架。
本发明解决其技术问题采用的另一技术方案为：构造一种照明装置，包括灯泡底座、以及设置在所述灯泡底座上的、如上述所述的LED光源。
实施本发明的一种LED光源和照明装置，具有以下有益效果：在透光的支架两侧面上分别贴附有LED芯片，LED芯片发出的光经过360°包覆在外面的发光罩后，可以达到全角度发光的照射效果，发光角度可达到360°。
附图说明
下面将结合附图及实施例对本发明作进一步说明，附图中：
图1是本发明一种LED光源优选实施例的主视图；
图2是本发明一种LED光源优选实施例的俯视图。
具体实施方式
如图1-2所示，在本发明的优选实施例中，该LED光源包括可透光的支架100、固定在支架100正反两侧面上的LED芯片、以及罩设在透明支架100外围的可被所述LED芯片发出的光线激发而发光的发光罩200。值得注意的是，LED芯片可以采用双面固晶焊线的方式贴附在支架100的正反两侧面上，也可以采用其他方式进行固定。可透光的支架100可保证LED芯片底部的光也能够透射出来，避免正反两侧面上的LED芯片发出的光线形成蝶形光斑，从而影响全角度发光的实现，且在支架100的两侧面上均设置LED芯片可扩大LED光源的发光范围。而可被LED芯片发出的光线激发而发光的发光罩200能够进一步提升整个光源的立体发光效果。
优选地，发光罩200包括本体、和涂覆在本体内表面上的、可被LED芯片发出的光线激发的发光层。发光层主要由可被LED芯片发出的光线激发发光的材料形成，现有的发光材料的主要组分是稀土金属的化合物和半导体材料，这种发光材料属于现有公知技术，在实际运用过程中可以根据需要选用。此外，发光罩200也可以采用由可透光的本体、和参杂在本体中的发光材料一体注塑成型的发光罩。采用这种形式的发光罩200可以使发光层（例如，荧光粉）远离发热源LED芯片，从而减小发光层的受热衰减，增加LED光源的使用寿命。无论采用哪种形式的发光罩200均可使整个LED光源达到立体发光光源的照射效果。
在上述所述的发光罩本体中，该本体可以采用由硅胶、环氧树脂、玻璃或由硅胶与环氧树脂的混合物制成的本体。
优选地，上述LED芯片包括红光LED芯片102、蓝光LED芯片101、或绿光LED芯片中至少两种的组合。在本发明的其中一具体实施例中，固定在支架100任意一个侧面上的LED芯片均包括间隔排列设置在支架100侧面上的红光LED芯片102和蓝光LED芯片101。也就是说，不论在支架100的正面还是侧面，红光LED芯片102和蓝光LED芯片101都是以这种方式排列的，这种错位排列是为了更好地实现立体发光。
通常，蓝光LED芯片101的激发波长为380nm-470nm，而红光LED芯片102的激发波长为590nm-650nm，当两种不同颜色的LED芯片以一定比例被混合使用之后就能产生需要的色调。具体来说，蓝光LED芯片101发出蓝光，蓝光激发发光层后形成高亮度的白光，然后和红光LED芯片102发出的红光进行混合，形成高亮度、高显色性的低色温白光。进一步地，上述蓝光LED芯片101与红光LED芯片102的数量比最好维持在1:1-6:1的范围内。在本发明的具体实施例中，蓝光LED芯片101与红光LED芯片102的数量比为2：1，也就是每两对蓝光LED芯片101中间就有一个红光LED芯片102（如图1和2所示）。
优选地，该LED光源还包括设置在支架100上的热敏电阻103，该热敏电阻103与LED芯片电性连接，这里的电性连接包括并联或串联的方式。通过增加热敏电阻103，在不使用外部电路的情况下，可以达到调节LED芯片电流的作用，解决了蓝光LED芯片101和红光LED芯片102的亮度受温度影响不一致的问题，从而解决了混光中色温漂移的问题，能够有效提升热稳定性。举例来说，当温度升高时，红光LED芯片102的亮度会降低，此时热敏电阻103随着温度的变化而改变自身的阻值，因此可以增大流过红光LED芯片102的电流，从而提高红光LED芯片102的亮度，实现红光LED芯片102亮度的保持，达到优良的热稳定性。
在本发明的优选实施例中，可透光的支架100可以采用陶瓷支架、玻璃支架、蓝宝石支架或高导热透明塑胶支架。
在本发明一种照明装置的具体实施例中，该照明装置包括灯泡底座、以及设置在灯泡底座上的、如上述所述的LED光源。在使用时，可以将上述的LED光源插于灯泡底座内并与灯泡的驱动电路板电性连接，由于该LED光源全角度发光，不仅可以达到传统白炽灯的效果，且使用方便、快捷，减少了传统LED需贴板的复杂流程。
以上实施例只为说明本发明的技术构思及特点，其目的在于让熟悉此项技术的人士能够了解本发明的内容并据此实施，并不能限制本发明的保护范围。凡跟本发明权利要求范围所做的均等变化与修饰，均应属于本发明权利要求的涵盖范围。

Claims (10)

1、一种LED光源，其特征在于，包括可透光的支架（100）、固定在所述支架正反两侧面上的LED芯片、以及罩设在所述支架（100）上的可被所述LED芯片发出的光线激发而发光的发光罩（200）。
2、根据权利要求1所述的LED光源，其特征在于，所述发光罩（200）包括本体、和涂覆在所述本体内表面上的、可被所述LED芯片发出的光线激发而发光的发光层。
3、根据权利要求1所述的LED光源，其特征在于，所述发光罩（200）包括由可透光的本体、和参杂在所述本体中的发光材料一体注塑成型的发光罩。
4、根据权利要求2或3任一项所述的LED光源，其特征在于，所述发光罩（200）的本体包括由硅胶、环氧树脂、玻璃或由硅胶与环氧树脂的混合物制成的本体。
5、根据权利要求1所述的LED光源，其特征在于，所述LED芯片包括红光LED芯片（102）、蓝光LED芯片（101）、或绿光LED芯片中至少两种的组合。
6、根据权利要求5所述的LED光源，其特征在于，固定在所述支架（100）任意一侧面上的所述LED芯片均包括间隔排列设置在所述支架（100）侧面上的红光LED芯片（102）和蓝光LED芯片（101）。
7、根据权利要求5所述的LED光源，其特征在于，所述蓝光LED芯片（101）与所述红光LED芯片（102）的数量比为1:1-6:1。
8、根据权利要求1所述的LED光源，其特征在于，该LED光源还包括设置在所述支架（100）上的热敏电阻（103），所述热敏电阻（103）与所述LED芯片电性连接。
9、根据权利要求1所述的LED光源，其特征在于，所述支架（100）包括陶瓷支架、玻璃支架、蓝宝石支架或高导热透明塑胶支架。
10、一种照明装置，其特征在于，包括灯泡底座、以及设置在所述灯泡底座上的、如权利要求1-9任一项所述的LED光源。
PCT/CN2012/076151 2012-05-28 2012-05-28 一种led光源及其照明装置 WO2013177735A1 (zh)

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