CN102252192A - YAG (yttrium aluminum garnet) fluorescent LED (light emitting diode) bulb lamp - Google Patents

YAG (yttrium aluminum garnet) fluorescent LED (light emitting diode) bulb lamp Download PDF

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Publication number
CN102252192A
CN102252192A CN2011101652314A CN201110165231A CN102252192A CN 102252192 A CN102252192 A CN 102252192A CN 2011101652314 A CN2011101652314 A CN 2011101652314A CN 201110165231 A CN201110165231 A CN 201110165231A CN 102252192 A CN102252192 A CN 102252192A
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China
Prior art keywords
heat
led
yag
led lamp
light
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Pending
Application number
CN2011101652314A
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Chinese (zh)
Inventor
王凯
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SUZHOU HAOLIBEST LIGHTING CO Ltd
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SUZHOU HAOLIBEST LIGHTING CO Ltd
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Application filed by SUZHOU HAOLIBEST LIGHTING CO Ltd filed Critical SUZHOU HAOLIBEST LIGHTING CO Ltd
Priority to CN2011101652314A priority Critical patent/CN102252192A/en
Publication of CN102252192A publication Critical patent/CN102252192A/en
Pending legal-status Critical Current

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Abstract

The invention relates to a YAG (yttrium aluminum garnet) fluorescent LED (light emitting diode) bulb lamp which comprises a lamp shade, a lamp cap, a heat radiator, a horizontal heat-conducting baseplate which is arranged on the upper end part of the heat radiator, LED lamp beads and a driver which can drive the LED lamp beads to give out light, wherein a heat-conducting bracket is arranged on the heat-conducting baseplate, and the LED lamp beads are arranged on the top of the heat-conducting bracket. The YAG fluorescent LED bulb lamp provided by the invention also comprises an inner cover which covers the exteriors of the heat-conducting bracket and the LED lamp beads, a YAG fluorescent powder layer is evenly adhered to the inner wall of the inner cover. According to the invention, the inner cover with the YAG fluorescent powder layer is arranged in the lamp shade, so that the uneven blue light and near ultraviolet emitted by the LED lamp beads can be effectively transformed into evenly scattered soft light sources, thus finally white light with even light intensity distribution and better color rendering can be obtained; and in addition, since the heat-conducting bracket ensures that the horizontal positions of the LED lamp beads are raised, the viewing angle of the light emitted by the LED lamp beads can be increased and the heat dissipation performance of the LED bulb lamp can be better.

Description

A kind of YAG fluorescence LED bulb lamp
Technical field
The invention belongs to lighting technical field, be specifically related to a kind of YAG fluorescence LED bulb lamp
Background technology
The research and development of LED in recent years, production and application develop rapidly, the invention of high-power blue-light LED chip make LED be applied to the general lighting field becomes possibility.The inner alloy (InGaN) of this blue-light LED chip because of having indium nitride and gallium nitride, utilize the optical property of InGaN alloy and can send blue light, but, therefore can not be directly used in illumination owing to contain stronger ultraviolet ray in the light that this blue-light LED chip sends.So people are by the surface-coated one deck yttrium-aluminium-garnet (YAG:Ge at blue-light LED chip 3+ ) fluorescent material or in the InGaN alloy blending YAG fluorescent material, the blue-light excited YAG fluorescent material that sends with blue-light LED chip sends gold-tinted, makes blue light and yellow light mix, finally obtains the LED lamp that emits white light.Therefore, no matter be single packaged LED lamp, still combine the LED light group that forms by a plurality of LED lamp pearls, not the spot light (or Lambertian source) on the general physics meaning, but the set of the spot light of a plurality of dispersions.This following problem of being made by blue-light LED chip surface-coated YAG fluorescent material of YAG fluorescence LED bulb lamp ubiquity: 1) under the different distance of myopia field, light distribution is inhomogeneous; 2) owing to only contain indigo plant, yellow two principal spectrums in the luminescent spectrum of white light, there is the problem that colour temperature is higher, colour rendering index is on the low side, makes the illuminated object cross-color not meet common lighting requirement; 3) spectrum mixes inhomogeneously in the light that sends of LED lamp, and its distribution of color is to change with distance and the different of angle as the curve of light distribution, and especially often there is a blue light center that colour temperature is very high in high-powered LED lamp.In addition, common YAG fluorescence LED bulb lamp also exists angle of visibility (general≤120 °) less than normal, the bad problem of thermal diffusivity
Summary of the invention
Technical problem to be solved by this invention is to overcome that the YAG fluorescence LED bulb lamp light distribution of prior art is inhomogeneous, colour rendering is bad, angle of visibility is little, the problem of poor radiation, and a kind of improved YAG fluorescence LED bulb lamp is provided.
For solving above technical problem, the present invention takes following technical scheme:
A kind of YAG fluorescence LED bulb lamp, comprise lampshade, the radiator of fixedlying connected with the lower edge of lampshade, be arranged on the horizontal heat-conducting substrate of radiator upper end, the lamp holder that is connected with the radiator bottom, LED lamp pearl and can drive the luminous driver of described LED lamp pearl, among the present invention, horizontal heat-conducting substrate is provided with the heat conduction support, LED lamp pearl is arranged at the top of heat conduction support, this YAG fluorescence LED bulb lamp comprises that also is located at the outer inner cover of described heat conduction support and LED lamp pearl, and this inner cover comprises transparent cover and attached to the yttrium aluminium garnet fluorescent powder layer on the described transparent cover inwall.
Preferably, described heat conduction support is tubular, and the ratio of the diameter of its diameter and described LED lamp pearl is between 2 ~ 1.5:1; 1/2 of the distance of described heat conduction support to the distance 〉=described fluorescence inner cover of heat-conducting substrate to heat-conducting substrate.
Preferably, the material of described heat-conducting substrate and heat conduction support is aluminium, and heat-conducting substrate and heat conduction support can be one-body molded, also can divide body formedly, separately makes.
In addition, heat conduction support outside also is provided with LGP, and LGP mainly plays reflex, and the light that it can be sent LED lamp pearl reflects away, and improves light utilization efficiency; LGP preferably is packaged in outside the heat conduction support, extends to from the bottom of heat conduction support around the LED lamp pearl of heat conduction cantilever tip.
Because the enforcement of above technical scheme, the present invention compared with prior art has following advantage:
The present invention is provided with the inner cover with YAG phosphor powder layer by the inside at lampshade, LED lamp pearl and heat conduction support are covered, make it possible to the uneven spot light that led chip sends is converted to effectively the soft light source of even scattering, obtain finally that light distribution is even, the better white light of colour rendering; Simultaneously by can selecting the excitation wavelength of fluorescent material, and then produce the YAG fluorescence LED bulb lamp that satisfies various colour temperature demands and colour rendering index easily to the adjusting of each component ratio of YAG fluorescent material on the inner cover with to the screening of fluorescent powder grain degree.In addition, therefore the raise position of LED lamp pearl of the heat conduction support that is provided with on the heat-conducting substrate can increase the luminous angle of visibility of LED lamp pearl, and also make the thermal diffusivity of LED bulb lamp become better.
Description of drawings
The present invention will be further described in detail below in conjunction with accompanying drawing and concrete embodiment:
Fig. 1 is the stereogram of YAG fluorescence LED bulb lamp of the present invention;
Fig. 2 is the overall structure schematic diagram of YAG fluorescence LED bulb lamp of the present invention;
Fig. 3 is the split structural representation of YAG fluorescence LED bulb lamp of the present invention;
Wherein: 1, lampshade; 2, radiator; 3, lamp holder; 4, LED lamp pearl; 5, heat-conducting substrate; 6, driver; 7, inner cover; 71, cover body; 72, YAG phosphor powder layer; 8, heat conduction support; 9, LGP.
The specific embodiment
The present invention will be further described in detail below in conjunction with specific embodiment, but be not limited to these embodiment.
Embodiment 1
Referring to Fig. 1,2 and 3, comprise lampshade 1, radiator 2, lamp holder 3, LED lamp pearl 4, heat-conducting substrate 5, driver 6, inner cover 7, heat conduction support 8 and LGP 9 according to the YAG fluorescence LED bulb lamp of present embodiment.Wherein, the lower edge of lampshade 1 is fixedlyed connected with the upper limb of radiator 2, and the lower edge of radiator 2 is fixedlyed connected with the upper limb of lamp holder 3, and fixedly connected mode can be bayonet socket, screw thread or gluing connection etc.Usually, radiator 2 is for having the metal of thermal conductive resin, and the top of lamp holder 3 and radiator 2 contacted parts are generally insulating barrier, as plastics (not showing among the figure), and the outer wall of lamp holder 3 and bottom material therefor metal for conducting electricity.In the present embodiment, the outer wall of lamp holder 3 is the conducting metal of screw-type, can certainly be arranged to bayonet type etc., so that join with external power source.Heat-conducting substrate 5 is an aluminum, it is horizontally set on the upper end of radiator 2, be provided with columnar aluminium heat conduction support 8 on the heat-conducting substrate 5,4 tops that are arranged on heat conduction support 8 of LED lamp pearl, and heat conduction support 8 is outer also to be arranged with a columnar LGP 9, LGP 9 from the bottom of heat conduction support 8 upwards until extend horizontally to LED lamp pearl 4 around.Driver 6 is arranged on radiator 2 inside, and it is luminous that it is used for driving LED lamp pearl 4.In addition, inner cover 7 is arranged in the lampshade 1, it is made of transparent cover 71 and one deck YAG phosphor powder layers 72 of evenly being coated in the transparent cover 71, inner cover 7 covers LED lamp pearl 4 and heat conduction support 8, the uneven spot light that LED lamp pearl 4 sends can be converted to effectively the soft light source of even scattering.
Its LED lamp pearl of common LED bulb lamp is to be set directly on the heat-conducting substrate, and its angle of visibility generally only is 120 °, and maximum also can only reach 180 °.Present embodiment YAG fluorescence LED bulb lamp is provided with an aluminium heat conduction support 8 on heat-conducting substrate 5, promoted the position of LED lamp pearl 4, and the angle of visibility of this YAG fluorescence LED bulb lamp is greatly improved.For making angle of visibility expand desirable scope to, the ratio of the diameter of the diameter of heat conduction support 8 and LED lamp pearl for well, and is that horizontal starting point is calculated with heat-conducting substrate 5 between 2 ~ 1.5:1, the height of heat conduction support 8 should 〉=inner cover 7 height 1/2.In addition, the setting that is formed in one of heat-conducting substrate 5 in the present embodiment and heat conduction support 8, both also can divide body formedly certainly, separately make.
The YAG fluorescence LED bulb lamp of present embodiment adopts the 220V power supply, drives design in conjunction with specific feedback circuit for led chip provides constant current by the AC/DC transformer, and LED lamp pearl 4 can send InGaN blue light and black light; The YAG phosphor powder layer 72 of inner cover 7 adopts nanometer technology to make, can in transparent cover 71, evenly distribute, uneven blue light and black light that LED lamp pearl 4 is sent convert soft scattered light to, simultaneously people can come the selective exitation wavelength by adjusting that each element of YAG fluorescent material is formed with to the screening of fluorescent powder grain degree, and then can produce the YAG fluorescence LED bulb lamp at various colour temperature demands of satisfying of 2500K-7000K colour temperature section and colour rendering index; The design of three-dimensional aluminium heat conduction support 8, not only solved the heat dissipation problem of LED lamp, especially high-powered LED lamp effectively, the angle of visibility of YAG fluorescence LED bulb lamp is greatly improved, even reach>270 °, so the luminous efficiency of this YAG fluorescence LED bulb lamp has also obtained improving further.Because good heat dissipation effect through verification experimental verification, extends to>30000 hours the service life of the YAG fluorescence LED bulb lamp of present embodiment.
More than the present invention has been done detailed description; its purpose is to allow the personage that is familiar with this art can understand content of the present invention and is implemented; can not limit protection scope of the present invention with this; all equivalences of doing according to spiritual essence of the present invention change or modify, and all should be encompassed in protection scope of the present invention

Claims (6)

1. YAG fluorescence LED bulb lamp, comprise lampshade (1), the radiator (2) of fixedlying connected with the lower edge of described lampshade (1), be arranged on the horizontal heat-conducting substrate (5) of described radiator (2) upper end, the lamp holder (3) that is connected with described radiator (2) bottom, LED lamp pearl (4) and can drive the luminous driver (6) of described LED lamp pearl (4), it is characterized in that: described horizontal heat-conducting substrate (5) is provided with heat conduction support (8), described LED lamp pearl (4) is arranged at the top of described heat conduction support (8), described YAG fluorescence LED bulb lamp also comprises and is located at the outer inner cover (7) of described heat conduction support (8) and described LED lamp pearl (4), and described inner cover (7) comprises transparent cover (71) and attached to the yttrium aluminium garnet fluorescent powder layer (72) on described transparent cover (71) inwall.
2. YAG fluorescence LED bulb lamp according to claim 1 is characterized in that: described heat conduction support (8) is tubular, and the ratio of the diameter of its diameter and described LED lamp pearl (4) is between 2 ~ 1.5:1.
3. YAG fluorescence LED bulb lamp according to claim 1 is characterized in that: 1/2 of the distance of described heat conduction support (8) to the distance 〉=described inner cover (7) of heat-conducting substrate (5) to heat-conducting substrate (5).
4. YAG fluorescence LED bulb lamp according to claim 1 is characterized in that: the material of described heat-conducting substrate (5) and described heat conduction support (8) is aluminium.
5. YAG fluorescence LED bulb lamp according to claim 1 is characterized in that: described heat-conducting substrate (5) and described heat conduction support (8) are formed in one or divide body formed.
6. YAG fluorescence LED bulb lamp according to claim 1 is characterized in that: described heat conduction support (8) outside also is provided with LGP (9).
CN2011101652314A 2011-06-20 2011-06-20 YAG (yttrium aluminum garnet) fluorescent LED (light emitting diode) bulb lamp Pending CN102252192A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2011101652314A CN102252192A (en) 2011-06-20 2011-06-20 YAG (yttrium aluminum garnet) fluorescent LED (light emitting diode) bulb lamp

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Application Number Priority Date Filing Date Title
CN2011101652314A CN102252192A (en) 2011-06-20 2011-06-20 YAG (yttrium aluminum garnet) fluorescent LED (light emitting diode) bulb lamp

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102661493A (en) * 2012-04-01 2012-09-12 德清新明辉电光源有限公司 LED lamp capable of outputting light at large angle
CN103335228A (en) * 2013-06-25 2013-10-02 浙江长兴家宝电子有限公司 LED (Light-Emitting Diode) lamp
CN103470968A (en) * 2012-06-08 2013-12-25 李文雄 Light emitting diode lamp core with large light emitting angle and illumination device with lamp core
CN104896329A (en) * 2015-05-27 2015-09-09 胡丽 High-power LED bulb capable of achieving quick cooling

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101338865A (en) * 2008-05-23 2009-01-07 段永成 Low attenuation high light efficiency LED illuminating apparatus and preparation method
CN101581408A (en) * 2009-07-01 2009-11-18 北京高科能光电技术有限公司 LED bulb
CN101655185A (en) * 2008-08-19 2010-02-24 鑫谷光电股份有限公司 Novel large-power LED candle-type lamp
CN101988653A (en) * 2010-12-03 2011-03-23 上海嘉塘电子有限公司 Highly efficient energy-saving LED (Light Emitting Diode) globe lamp
CN202109275U (en) * 2011-06-20 2012-01-11 苏州红壹佰照明有限公司 YAG (Yttrium Aluminum Garnet) fluorescence LED (light-emitting diode) bulb

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101338865A (en) * 2008-05-23 2009-01-07 段永成 Low attenuation high light efficiency LED illuminating apparatus and preparation method
CN101655185A (en) * 2008-08-19 2010-02-24 鑫谷光电股份有限公司 Novel large-power LED candle-type lamp
CN101581408A (en) * 2009-07-01 2009-11-18 北京高科能光电技术有限公司 LED bulb
CN101988653A (en) * 2010-12-03 2011-03-23 上海嘉塘电子有限公司 Highly efficient energy-saving LED (Light Emitting Diode) globe lamp
CN202109275U (en) * 2011-06-20 2012-01-11 苏州红壹佰照明有限公司 YAG (Yttrium Aluminum Garnet) fluorescence LED (light-emitting diode) bulb

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102661493A (en) * 2012-04-01 2012-09-12 德清新明辉电光源有限公司 LED lamp capable of outputting light at large angle
CN103470968A (en) * 2012-06-08 2013-12-25 李文雄 Light emitting diode lamp core with large light emitting angle and illumination device with lamp core
CN103335228A (en) * 2013-06-25 2013-10-02 浙江长兴家宝电子有限公司 LED (Light-Emitting Diode) lamp
CN104896329A (en) * 2015-05-27 2015-09-09 胡丽 High-power LED bulb capable of achieving quick cooling

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Application publication date: 20111123