CN103438374A - 360-degree light-emitting LED bulb lamp - Google Patents

360-degree light-emitting LED bulb lamp Download PDF

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Publication number
CN103438374A
CN103438374A CN2013103804024A CN201310380402A CN103438374A CN 103438374 A CN103438374 A CN 103438374A CN 2013103804024 A CN2013103804024 A CN 2013103804024A CN 201310380402 A CN201310380402 A CN 201310380402A CN 103438374 A CN103438374 A CN 103438374A
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China
Prior art keywords
bulb lamp
heat conduction
crystalline ceramics
supporting column
led bulb
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CN2013103804024A
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CN103438374B (en
Inventor
郭金霞
谢海忠
卢鹏志
田婷
赵勇兵
詹腾
伊晓燕
王军喜
李晋闽
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Institute of Semiconductors of CAS
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Institute of Semiconductors of CAS
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Publication of CN103438374B publication Critical patent/CN103438374B/en
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Abstract

The invention provides a 360-degree light-emitting LED bulb lamp. The 360-degree light-emitting LED bulb lamp comprises a spherical outer shell, a base, a heat conduction support, a plurality of transparent ceramic substrates and a driving circuit. The base is connected with the spherical outer shell. The heat conduction support is arranged on the base. The transparent ceramic substrates are arranged on the heat conduction support and are respectively provided with a plurality of LED tube cores, and the heat conduction support is perpendicular to the transparent ceramic substrates. The driving circuit is located inside the base. The LED tube cores are electrically connected with the driving circuit. According to the 360-degree light-emitting LED bulb lamp, the light-emitting efficiency of the whole lamp can be improved. The 360-degree light-emitting LED bulb lamp has the advantages of being low in cost and long in service life.

Description

The luminous LED bulb lamp of 360 degree
Technical field
The present invention relates to a kind of light emitting diode construction.More specifically, the present invention relates to a kind of luminous LED bulb lamp of 360 degree of conveniently replaced light source.
Background technology
Light emitting diode (LED) has life-span length, energy-saving and environmental protection, coloury advantage, therefore, along with the development of the technology such as extension, chip, encapsulation, the further raising of luminous efficiency, LED by progressively for illumination, show, the every field such as medical treatment.At present, most of LED is only luminous in certain solid angle scope, and therefore, the contrary side in the LED chip light-emitting area in the chip manufacturing process forms speculum, and LED chip is arranged on light tight and shows to be coated with on the pedestal in reflecting layer.Although, the reflectivity of current speculum can be accomplished more than 90%, but consider that the reflectivity in the actual reflecting layer of cost is mostly lower than 80%, the light that LED sends through repeatedly after emission, being reflected layer itself, chip, Frame lamp assembly sponge a lot, greatly reduce the luminous efficiency of LED light fixture.
In addition, in full solid angle alight tool form, for example, in bulb lamp, wish that LED light source is luminous in the solid angle scope of 360 degree as tungsten filament.Therefore, prior art provides some " accurate full angle " emitting led light fixtures that utilize single face light extracting LED chip to form, as accompanying drawing 1.The LED bulb lamp 1 as shown in Figure 1, it comprises lamp screw socket 11, pedestal 12 and lampshade 13, a plurality of LED boards 15 are set on center fluorescent tube 14, the groove 141 of a plurality of embedding LED boards 15 is set on center fluorescent tube 14, center fluorescent tube 14 combines for heat radiation, at the interior circuit board 17 that arranges of pedestal 12 with central seat 16.Because the LED on LED board 15 is that one direction is luminous, so many LED outwards need to be attached on center fluorescent tube 14 could realize in 360 degree solid angle scopes luminous, this structure process complexity, the LED needed is many, groove 141 edges also can not be ignored the absorption of light and restriction, and LED board 15 can't change, once part LED board 15 does not work, the brightness difference of whole LED bulb lamp on different lighting angles, affect attractive in appearance; In addition, once LED lost efficacy, thereby must must change whole bulb lamp, cause waste.
In order to solve the problem of changing LED board, U.S. Pat 2007/0159828A1 proposes to adopt the LED board of plug type, as shown in Figure 2.This LED bulb lamp comprises lampshade 100, pedestal 110 and LED module 20.LED module 20 comprises a plurality of LED boards 21 and triangular prism shaped thermal column 22, on thermal column 22 by slot 221 and radiating fin 222, LED board 21 with LED211 inserts slot 221 and is fixed on thermal column 22, heat-removal bar 23 is connected and fixed thermal column 22 and pedestal 110 by the through hole 223 of thermal column 22 central authorities and the through hole 111 of pedestal 110 central authorities, forms screw thread 112 on pedestal 110 outer walls and is connected with blanket socket.Solved the replacing problem of LED board in U.S. Pat 2007/0159828A1, can avoid waste and facilitate part to change, but the edge of slot 221 and radiating fin increase greatly to the absorption meeting of light, and for convenient plug, the most of area of triangular prism shaped thermal column can't arrange LED board, cause bulb lamp different angles luminous intensity skewness, not 360 degree truly are luminous.
Summary of the invention
The object of the invention is to, provide 360 degree luminous LED bulb lamp, can improve the light extraction efficiency of whole lamp, have advantages of that cost is low and the life-span is long.
The invention provides the luminous LED bulb lamp of a kind of 360 degree, comprising:
One spherical housing and the pedestal be attached thereto;
One heat conduction supporting column, it is arranged on pedestal;
A plurality of crystalline ceramics substrates, it is arranged on heat conduction supporting column, and a plurality of LED tube cores are set respectively on a plurality of crystalline ceramics substrates, and described heat conduction supporting column is vertical setting with the crystalline ceramics substrate;
One drive circuit, it is positioned at pedestal, and described LED tube core is electrically connected to drive circuit.
The invention has the beneficial effects as follows: provide a kind of truly 360 degree luminous LED bulb lamp, its light intensity along all angles is uniformly distributed, and light is very little in the absorption of bulb lamp inside, can improve the light extraction efficiency of whole lamp; In addition, LED board can plug replacing simply, reduces replacement cost, avoids waste.Another advantage of the present invention is, adopts sandwich construction, can avoid LED heat on single substrate too concentrated, the life-span that contributes to improve whole light fixture.
The accompanying drawing explanation
For making the purpose, technical solutions and advantages of the present invention clearer, ice-cold below in conjunction with concrete enforcement, and, with reference to accompanying drawing, the present invention is described in more detail, wherein:
Fig. 1 is the luminous bulb lamp schematic diagram of 360 degree in prior art;
The luminous bulb lamp schematic diagram of 360 degree that Fig. 2 is replaceable light source in prior art;
The structural representation of the luminous bulb lamp of 360 degree that Fig. 3 is replaceable light source of the present invention;
Another structural representation that Fig. 4 is replaceable light source of the present invention;
The heat conduction supporting column structural representation that Fig. 5 is bulb lamp of the present invention;
Fig. 6 A and Fig. 6 B are the crystalline ceramics substrate of the present invention top view of arranging;
Fig. 7 A and Fig. 7 B are the crystalline ceramics substrate top view with heat radiation thin-film material of the present invention.
The specific embodiment
Referring to shown in Fig. 3, is the luminous LED bulb lamp of a kind of 360 degree provided by the invention, comprising:
One spherical housing 310 and the pedestal 320 be attached thereto;
One heat conduction supporting column 330, it is arranged on pedestal 320; Described heat conduction supporting column 330 can be hollow cylinder, in heat conduction supporting column 330 outside wall surface, can laterally have a plurality of grooves for heat radiation, and this heat conduction supporting column 330 is coated with the heat radiation thin-film material.Can be provided with lead hole in the position of aliging with described crystalline ceramics substrate 340 on the sidewall of described heat conduction supporting column 330.
Crystalline ceramics substrate 340, it is arranged on heat conduction supporting column 330, and a plurality of LED tube cores 301 are set respectively on crystalline ceramics substrate 340, and described heat conduction supporting column 330 is vertical setting with crystalline ceramics substrate 340; Described crystalline ceramics substrate 340 is for disc-shaped or become at grade a plurality of support arm structures of radial distribution along center, on the surface of this crystalline ceramics substrate 340, the heat radiation thin-film material is set, this heat radiation thin-film material contacts with heat conduction supporting column 330, and the thin-film material that wherein dispels the heat can be graphite paper or transparent grapheme material.The material of described crystalline ceramics substrate 340 is yttrium-aluminium-garnet, aluminium nitride, aluminium oxide, yittrium oxide, beryllium oxide, magnesia, GaAs, zinc sulphide or calcirm-fluoride.When described crystalline ceramics substrate 340 is yttrium-aluminium-garnet, it is doped with Ce 3+.The quantity of described crystalline ceramics substrate 340 is two when above, and the diameter of its each crystalline ceramics substrate 340 is identical or not identical.
One drive circuit 360, it is positioned at pedestal 320, and described LED tube core 301 is electrically connected to drive circuit.Described LED tube core 301 can be 360 degree luminescence chips, and described LED tube core 301 can be arranged in the middle of two crystalline ceramics substrates 340.
Below in conjunction with Fig. 3 to Fig. 7 and embodiment, the invention will be further described.
According to the first embodiment of the present invention, as shown in Figure 3, described bulb lamp 300 comprises spherical housing 310, pedestal 320, spiral shell shape socket 380, heat conduction supporting column 330, crystalline ceramics substrate 340 and is arranged on the LED chip 301 on the crystalline ceramics substrate.Wherein, described spherical housing 310 is fixed on pedestal 320 with disconnectable form, for example adopt screw thread and screw socket in conjunction with fixing (as between Fig. 1 ball bubble shell 100 and pedestal 110 in conjunction with screw thread and screw socket), perhaps adopt the elastic spring engaging, or adopt draw-in groove and projection rotation to be fixed.On heat conduction supporting column 330 in spherical housing 310, crystalline ceramics substrate 340 is set, heat conduction supporting column 330 is fixed on the pedestal 320 of bulb lamp 300 bottoms in disconnectable mode equally, can adopt screw thread to engage with screw socket, elastic spring or draw-in groove and bar rotation engaging mode is fixed, thereby make heat conduction supporting column 330 and pedestal 320 close contacts; Simultaneously, heat conduction supporting column 330 can be taken off replacing from pedestal 320.With heat conduction supporting column 330, crystalline ceramics substrate 340 substantially vertically is set, and LED tube core 301 is set on the crystalline ceramics substrate, the P of LED tube core 301, N electrode are by the interconnection of the wiring (not shown) on crystalline ceramics substrate 340 and be electrically connected to drive circuit in pedestal 360, with the power supply that realizes LED tube core 301 and luminous.
Wherein spherical housing 310 can adopt transparent glass cover, also can adopt the frosted or the white lampshade of milk that prevent dazzle, and shape can be carried out Art Design as required, such as being designed to candle light shape, hemispherical etc.
Pedestal 320 adopts the high material of thermal conductivity, as aluminium, pottery etc., in pedestal 320, perforate 321, in perforate 321, the screw thread (not shown) can be set, or the snap fastener that coordinates with heat conduction supporting column 330 of employing, for example one or more draw-in groove (not shown), be convenient to heat conduction supporting column 330 and combine closely with pedestal 320, improves mechanical strength and improve heat dispersion.Drive circuit assembly 360 is set in pedestal 320, and the outside of pedestal 320 adopts insulating materials, to meet the Electrical Safety standard-required.While adopting ceramic material to form pedestal 320, the metal contact pad (not shown) can be set at the sidewall of perforate 321, as fixedly structure and the conductive channel of heat conduction supporting column 320.When the LED tube core 301 of heat conduction supporting column 330 upper supports breaks down while needing to change, by plug or screw and take off heat conduction supporting column 330 and change, can avoid lamp outer casing and drive circuit to change waste.
With perforate 321 junctions, the screw thread 332 coordinate with perforate 321 is set on heat conduction supporting column 330, or snap fastener is set, as elastic bumps, coordinate and make heat conduction supporting column 330 lock on pedestal 320 with draw-in groove in perforate, and good thermo-contact is arranged to each other.Heat conduction supporting column 330 can adopt the material of good heat dispersion performance, and metal or alloy such as copper, aluminium can form high reflection layer at electroplating surface, the absorption of the light of avoiding it to send LED.
According to a second embodiment of the present invention, heat conduction supporting column 330 further can be multistage cover connected components, and each is socketed element and can outwards winding, and can ensure larger heat radiation contact area, also is convenient to change crystalline ceramics substrate 340.For example, multistage cover connected components comprises hollow heat conduction supporting column 330 and cylindric nut 350, as shown in Figure 4.
The shape of heat conduction supporting column 330 can be various shapes, as cylindrical, prismatic etc.; Heat conduction supporting column 330 adopts the hollow cylinder structure as Fig. 5, wherein can pass wire, and the LED tube core 301 of being convenient on crystalline ceramics substrate 340 is connected with the drive circuit 360 in pedestal 320; It is threaded regional 334 that outer surface forms a plurality of tools, for the fixing nut 350 of crystalline ceramics substrate 340 of spinner; On heat conduction supporting column 330 sidewalls of hollow cylinder structure, the through hole 333 that leads to the boring zone is set on the position of roughly aliging with crystalline ceramics substrate 340 surfaces, is electrically connected to the drive circuit 360 of pedestal 320 by the hollow area 336 in this through hole 333 and heat conduction supporting column 330 for the LED tube core 301 on the crystalline ceramics substrate 340 by corresponding.
Crystalline ceramics substrate 340 adopts oxide or Non-oxide Transparent Ceramics, the oxidic transparent pottery comprises aluminium oxide, YAG (yttrium-aluminium-garnet), yittrium oxide, beryllium oxide, magnesia etc., and non-oxide ceramics comprises aluminium nitride, GaAs, zinc sulphide, calcirm-fluoride etc.Described crystalline ceramics substrate 340 can be also to mix Ce 3+the YAG pottery.When crystalline ceramics substrate 340 is to mix Ce 3+yAG when pottery, the LED tube core can be clipped in the middle of two crystalline ceramics substrates 340, crystalline ceramics substrate 340 is simultaneously as luminescent conversion layer.
Be formed centrally the through hole (not shown) in crystalline ceramics substrate 340, be used for through heat conduction supporting column 330, connect up on crystalline ceramics substrate 340 and weld LED tube core 301, LED tube core 301 directly upside-down mounting or eutectic is welded on the metal pad (not shown) on crystalline ceramics substrate 340.Can on conductive pillar 330, vertically connect a plurality of crystalline ceramics substrates 340; The size of a plurality of crystalline ceramics substrates 340 can be different, also can be identical, and can be the symmetric shapes such as circle, ellipse, rectangle, spindle and bow tie; While adopting ellipse, rectangle, spindle, bow tie, the longitudinal arrangement of a plurality of crystalline ceramics substrates 340 certain angle of can interlocking, for example, when adopting 3 crystalline ceramics substrates 340, differ each other 60 degree, as shown in Figure 6A, thus make the luminous more even on all angles of bulb lamp.Preferably adopt the circular crystalline ceramics substrate 340 of different-diameter, as shown in Figure 6B, LED tube core 301 evenly is arranged on the periphery of circular crystalline ceramics substrate 340, and can be arranged on the upper surface of crystalline ceramics substrate 340, or is arranged on upper surface and lower surface simultaneously.
LED tube core 301 can adopt the small-power chip, is input as below 0.1W, and in also can adopting, power or the above high-power chip of 1W, can adopt high pressure or AC LED chip, and high-voltage LED chip and AC LED chip refer to high pressure and the AC LED of single-chip.LED tube core 301 adopts 360 degree luminescence chips, and six of the LED tube core faces can bright dipping, particularly, for packed LED chip, back reflector is not set, and for flip LED chips, the substrate of its upside-down mounting should be printing opacity.
A third embodiment in accordance with the invention, for the heat that LED tube core on crystalline ceramics substrate 340 301 is produced is delivered to pedestal 320 and distributes by heat conduction supporting column 330, can between the nut 350 of fixing crystalline ceramics substrate 340 and crystalline ceramics substrate 340, the heat radiation thin-film material 380 that laterally (along the film bearing of trend) heat conductivility is good be set, the heatsink transverse thin-film material of carbon containing for example, as graphite paper or graphene film, as shown in Figure 4.When heat radiation thin-film material 380 adopts transparent graphene film 386, graphene film 386 is arranged on to the middle section of crystalline ceramics substrate 340 around heat conduction supporting column 330, graphene film 386 and crystalline ceramics substrate 340 shapes can be consistent or comply with the shape of crystalline ceramics substrate 340, edge approaches LED tube core 301, as shown in Figure 7 B.So be convenient to the heat lateral transport of LED tube core 301 generations on heat conduction supporting column 330 and distribute.When adopting graphite paper 381, graphite paper 381 be arranged on part between nut 350 and crystalline ceramics substrate 340 be arranged to around heat conduction supporting column 330 and with the disc of heat conduction supporting column 330 surface laminatings, preferably in disc graphite paper 381 connection extensions, edge 382, this extension 382 is stretched to and is approached LED tube core 301, extension 382 width are set to below 1mm, avoid it to be in the light as far as possible.As shown in Figure 7 A.Preferably, the surface of graphite paper 381 can cover Ag or A1 and other highly reflective materials, to reduce the absorption of 381 pairs of light of graphite paper.In addition, the heat radiation thin-film material electric conductivity of carbon containing is good, guarantee the wiring electric insulation on itself and crystalline ceramics substrate 340 surfaces.
The above; be only the specific embodiment in the present invention, but protection scope of the present invention is not limited to this, anyly is familiar with the people of this technology in the disclosed technical scope of the present invention; the conversion that can expect easily or replacement, all should be encompassed in of the present invention comprise scope within.Therefore, protection scope of the present invention should be as the criterion with the protection domain of claims.

Claims (10)

1. spend luminous LED bulb lamp for one kind 360, comprising:
One spherical housing and the pedestal be attached thereto;
One heat conduction supporting column, it is arranged on pedestal;
A plurality of crystalline ceramics substrates, it is arranged on heat conduction supporting column, and a plurality of LED tube cores are set respectively on a plurality of crystalline ceramics substrates, and described heat conduction supporting column is vertical setting with the crystalline ceramics substrate;
One drive circuit, it is positioned at pedestal, and described LED tube core is electrically connected to drive circuit.
2. as claimed in claim 1 360 spend luminous LED bulb lamp, and wherein said heat conduction supporting column is hollow cylinder, in the heat conduction supporting column outside wall surface, laterally have a plurality of grooves for heat radiation, and this heat conduction supporting column is coated with the heat radiation thin-film material.
3. as claimed in claim 2 360 spend luminous LED bulb lamp, and the position of aliging with described crystalline ceramics substrate on the sidewall of wherein said heat conduction supporting column is provided with lead hole.
4. as claimed in claim 1 360 spend luminous LED bulb lamp, wherein said crystalline ceramics substrate is disc-shaped or becomes at grade a plurality of support arm structures of radial distribution along center, on the surface of this crystalline ceramics substrate, the heat radiation thin-film material is set, this heat radiation thin-film material contacts with heat conduction supporting column.
5. as described as claim 2 or 4 360 spend luminous LED bulb lamp, and the thin-film material that wherein dispels the heat is graphite paper or transparent grapheme material.
6. as claimed in claim 4 360 spend luminous LED bulb lamp, and the material of wherein said crystalline ceramics substrate is yttrium-aluminium-garnet, aluminium nitride, aluminium oxide, yittrium oxide, beryllium oxide, magnesia, GaAs, zinc sulphide or calcirm-fluoride.
7. as claimed in claim 6 360 spend luminous LED bulb lamp, and when wherein said crystalline ceramics substrate is yttrium-aluminium-garnet, it is doped with Ce 3+.
8. as claimed in claim 1 360 spend luminous LED bulb lamp, and wherein said LED tube core is 360 degree luminescence chips.
9. as claimed in claim 8 360 spend luminous LED bulb lamp, and wherein said LED tube core is arranged in the middle of two crystalline ceramics substrates.
10. as claimed in claim 1 360 spend luminous LED bulb lamp, and the diameter of wherein said a plurality of crystalline ceramics substrates is identical or not identical.
CN201310380402.4A 2013-08-28 2013-08-28 The LEDbulb lamp of 360 degree of luminescences Active CN103438374B (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103824929A (en) * 2014-03-24 2014-05-28 武汉和光照明科技有限公司 Formula for fabricating transparent substrate, transparent substrate and light-emitting diode (LED) light-emitting module and lamp
CN104613351A (en) * 2015-02-14 2015-05-13 吴鼎鼎 LED light-emitting device
CN107388068A (en) * 2017-09-01 2017-11-24 葛铁汉 A kind of LED lamp
CN112731582A (en) * 2019-10-28 2021-04-30 丹尼斯·里茨尔菲尔德 Light guide device and assembly

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CN202972653U (en) * 2012-11-30 2013-06-05 中国石化工程建设有限公司 Anti-explosion LED (Light Emitting Diode) lamp
CN202972633U (en) * 2012-11-16 2013-06-05 洛阳欣珑陶瓷有限公司 Packaging structure capable of realizing omni-directional LED (Light Emitting Diode) lighting by utilizing transparent ceramic COB (Chip on Board) substrate
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CN201706335U (en) * 2010-05-28 2011-01-12 陈烱勋 Light emitting diode streetlamp
CN102454903A (en) * 2010-10-27 2012-05-16 林伟盛 LED lighting bulb
CN201944575U (en) * 2010-11-17 2011-08-24 浙江雄邦节能产品有限公司 Ceramic substrate LED light source
CN102354725A (en) * 2011-10-29 2012-02-15 华南师范大学 High-power light emitting diode with radiating substrate made of diamond-like film-copper composite material
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CN103824929A (en) * 2014-03-24 2014-05-28 武汉和光照明科技有限公司 Formula for fabricating transparent substrate, transparent substrate and light-emitting diode (LED) light-emitting module and lamp
CN104613351A (en) * 2015-02-14 2015-05-13 吴鼎鼎 LED light-emitting device
CN107388068A (en) * 2017-09-01 2017-11-24 葛铁汉 A kind of LED lamp
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CN112731582A (en) * 2019-10-28 2021-04-30 丹尼斯·里茨尔菲尔德 Light guide device and assembly

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