CN103322436B - Structure of LED lamp - Google Patents

Structure of LED lamp Download PDF

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Publication number
CN103322436B
CN103322436B CN201210077562.7A CN201210077562A CN103322436B CN 103322436 B CN103322436 B CN 103322436B CN 201210077562 A CN201210077562 A CN 201210077562A CN 103322436 B CN103322436 B CN 103322436B
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China
Prior art keywords
lamp
led
reflection
led light
light
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Expired - Fee Related
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CN201210077562.7A
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Chinese (zh)
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CN103322436A (en
Inventor
王洪华
王春华
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Wuhan Nangeer Science & Technology Co Ltd
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Wuhan Nangeer Science & Technology Co Ltd
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Priority to CN201210077562.7A priority Critical patent/CN103322436B/en
Publication of CN103322436A publication Critical patent/CN103322436A/en
Application granted granted Critical
Publication of CN103322436B publication Critical patent/CN103322436B/en
Expired - Fee Related legal-status Critical Current
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Abstract

The invention provides a structure of an LED (Light Emitting Diode) lamp. The LED lamp comprises a housing, a reflection lamp cup, a lens and a PCB (Printed Circuit Board) with an LED light source, and is characterized in that a PN node heat dissipation and conduction structure of the LED light source consists of the positive pole, the negative pole and the heat dissipation pole of the LED light source, a copper-clad foil of the PCB-the reflection lamp cup, a metal bracket (in case of a plurality of reflection lamp cups), an inner step of the lamp housing, and the lamp housing; a light projection structure of the LED lamp consists of the LED light source, the reflection lamp cup, a double-sided concave lens and a piece of transparent glass. As each LED light source is equipped with the reflection lamp cup of which the area and the volume are multiple times larger than those of the heat dissipation way of an aluminum substrate, the junction temperature energy on PN nodes of the LED light source can be instantly adsorbed, and the PN nodes are in the heat balance state below 120 DEG C; as the multi-fillet-shaped double-sided concave lenses perpendicular to one another are adopted, the light loss of the lenses is reduced, the light projection capability and transmitting capability of the lamp are improved, and the lamp has a better illuminating effect.

Description

A kind of structure of LED lamp
Technical field
The present invention relates to LED illumination lamp technical field, be specifically related to a kind of structure of LED lamp.
Background technology
Commercially promote the use of for many years with the lighting that white LED light source makes at present, but its performance is commercially undesirable: in first use procedure, light decay comparatively fast causes light fixture shorter for service life; It two is the diffused light direct illumination that light fixture sends by LED light source, and the weak illuminating effect that causes of the projection of light is not good enough, above 2 technical bottlenecks becoming LED lamp and promote the use of at lighting field.
LED lamp is the light decay one of the main reasons that comparatively fast causes light fixture service life shorter in use, that the junction temperature that LED light source when luminous lighting, its PN junction produces can not get controlling, make junction temperature be elevated to caused by more than 120 DEG C, in LED lamp industry, generally believe that junction temperature controlled is reduce LED lamp light decay, the long-life key of guarantee LED lamp below 120 DEG C.
In order to realize the thermal equilibrium control of LED junction temperature, LED lamp manufacturer proposes multiple solution, wherein employing aluminium base heat-removal modalities is the main flow of current production application, because the heat conduction heat absorptivity of aluminium sheet is good, the cpu chip of its heat conduction that is generally used for needing dispelling the heat is welded aspect, aluminium base is used for LED lamp, both positive and negative polarity and the heat radiation of LED light source are extremely directly welded on pcb board, thermal resistance can be accomplished minimum and that thermal conductance goes out is fastest, aluminium base has certain volume and area to carry out absorbing heat and heat conduction simultaneously, PN junction is made to be in the thermal equilibrium state of less than 120 DEG C, therefore the application of this heat sink conception in small power LED illumination is comparatively successful, as low-power lighting bubble, the back lighting etc. of mobile phone and LCDs.If aluminium base heat-removal modalities to be used for high-power (tens watts and even upper hectowatt) LED illumination lamp, such as street lamp, it needs even up to a hundred of LED light source tens, and also need to be arranged in matrix structure, in this case because aluminium base is relative to the area be assigned to corresponding to each light source and small volume, within moment, the junction temperature on LED light source PN junction can not be taken away, PN junction can not be made to be in the thermal equilibrium state of less than 120 DEG C, its light decay of the light fixture produced under this situation is larger, the thermal equilibrium state of manufacturer in order to make PN junction be in less than 120 DEG C, on aluminum base PCB circuit board, just install the metal heat sink of larger volume and area additional, but this measure has lost moment heat radiator chance, be difficult to the thermal equilibrium state making PN junction be in less than 120 DEG C.In order to address this problem, some producers also proposed the solution utilizing fan wind-cooling heat dissipating, what have it is also proposed the Cooling Solution etc. utilizing radiator liquid to flow in metallic conduit, but all there is the problems such as the stability of light fixture longtime running, reliability and economy, thus cause the current high-power LED lighting fixture situation applied in stagnation commercially.
The full sphere of luminescence in approximate 360 ° of three-dimensional viewpoins of conventional light source incandescent lamp, high mercury lamp, high sodium vapor lamp, fluorescent lamp and electricity-saving lamp etc., they collect back reflection easily via the light that the measure such as reflection shield, speculum can not project illuminated area and go to illuminated area, thus increase the delivery capabilities of light fixture on illuminated area.And LED light source is due to the difference of principle of luminosity and manufacturing technology, its luminescence is similar to the hemisphere shape of 180 ° of three-dimensional viewpoins, hemispheric stereo luminous can only be had, another hemisphere is sheltered from by the PCB that LED light source is welded, and therefore LED lamp can not strengthen its delivery capabilities simply by the measure such as reflection shield, speculum.In order to strengthen the delivery capabilities of LED lamp, light fixture manufacturer all can add an optical lens outside LED light source, the irradiating angle of adjustment light fixture, the light that light fixture is sent more reasonably projects on the area for illumination, the light modulation lens that current high-power LED lamp is installed are one side concavees lens, in order to reach the design illumination Lx value for lighting area length direction and cross direction, just ellipse is designed to bottom concavees lens, it has two kinds of R curvature to carry out light splitting projection to length direction and cross direction respectively for same concave surface, when the light that LED light source sends is divided light by this lens reflection, light can produce interference capability at two kinds of R curvature intersection places and exclusiveness consequently occurs the larger problem of light loss.Simultaneously, the projecting direction of LED light source light by the hemisphere centre of sphere to hemisphere spherical radiation, in the diffuse form in infinite direction, the too many then light projector ability in its direction is just poor, when the irradiating angle of this diffused light scioptics adjustment light, cause the loss of emergent light after lens reflection adjustment comparatively large because of the incidence angle uniformity difference of diffused light, the light that above situation causes light fixture to cast out is weak and the illuminating effect that seems is not good enough, and it largely reducing the high advantage of LED light source Lm/w value.
Summary of the invention
The present invention is the problem such as solve PN junction heat radiation and thermal balance question that current LED lamp exists in lighting field is promoted the use of and delivery capabilities is not good enough, proposes a kind of structure of LED lamp.
The technical scheme that the present invention takes is:, a kind of structure of LED lamp, comprise the PCB composition of lamp outer casing, reflection Lamp cup, lens and band LED light source, it is characterized in that:
To be dispelled the heat conductive structure by LED light source both positive and negative polarity and the heat radiation pole PN junction that step and lamp outer casing etc. in Copper Foil, reflection Lamp cup, lamp outer casing form LED light source of covering by the PCB that is coupled to each other, the heat that when making luminous by LED light source, PN junction sends to cover in Copper Foil → reflection Lamp cup → lamp outer casing step → lamp outer casing path in air along LED light source both positive and negative polarity and heat radiation pole → PCB;
Be made up of the projective structure of LED lamp light by reflection Lamp cup, double concave lens and the clear glass etc. arranged above it LED light source.
The present invention also has following technical characteristic:
Reflection Lamp cup is when being multiple, to be dispelled the heat conductive structure by LED light source both positive and negative polarity and the heat radiation pole PN junction that step and lamp outer casing in Copper Foil, reflection Lamp cup, metallic support, lamp outer casing form LED light source of covering by the PCB that is coupled to each other.
The Copper Foil that covers of described PCB is fitted tightly by rivet or screw with the outer bottom of reflection Lamp cup.
When the shadow surface of described light fixture is single reflection Lamp cup, in lamp outer casing, step fits tightly with the edge of reflection Lamp cup, when the shadow surface of described light fixture is multiple reflection Lamp cup composition, reflectoscope cup fits on metallic support, then is fitted tightly by step in the edge of metallic support and lamp outer casing.
Described double concave lens is orthogonal how stupefied strip double concave lens, its one side is interior lens, another side is outer lens, and how stupefied bar lens in its one side are mutually vertical with the how stupefied bar lens on another side, and interior outer lens adjusts the irradiating angle of light fixture by adjusting its R curvature.
Described orthogonal how stupefied strip double concave lens is a single-piece, and its area is determined according to the light-emitting area of LED lamp, and it can be the size of a reflection Lamp cup, also can be the matrix area that multiple reflection Lamp cup is arranged in.
Feature of the present invention and beneficial effect are:
1. be the reflection Lamp cup that each LED light source is equipped with than the large several times area of aluminium base heat-removal modalities and volume, junction temperature on LED light source PN junction can be walked by absorption within moment, and make PN junction be in the thermal equilibrium state of less than 120 DEG C, thus effectively control the light decay of light source.
2. the diffused light that LED light source sends is changed into the direct light in a direction, for the irradiating angle that LED lamp adds optical lens and adjust light fixture is had laid a good foundation.
3. the one side concavees lens (or one side convex lens) prior art being adjusted irradiation angle change orthogonal how stupefied strip double concave lens into, the light loss of lens is reduced thus improves delivery capabilities and the penetration capacity of light, uniformity and the directionality of light projector are better.
4. cover by the PCB that is coupled to each other the PN junction heat radiation conductive structure that step and lamp outer casing in Copper Foil, reflection Lamp cup, metallic support (during multiple reflection Lamp cup), lamp outer casing form LED light source by LED light source both positive and negative polarity and heat radiation pole, the heat that when making luminous by LED light source, PN junction sends to cover in Copper Foil → reflection Lamp cup → metallic support (during multiple reflection Lamp cup) → lamp outer casing step → lamp outer casing path in air along LED light source both positive and negative polarity and heat radiation pole → PCB, PN junction heat dissipation problem when solving LED light source luminescence.
5. be made up of the projective structure of LED lamp light LED light source by reflection Lamp cup, double concave lens and the clear glass arranged above it, there is the effect improving LED lamp delivery capabilities, enhance the illuminating effect of light fixture.
Accompanying drawing explanation
Fig. 1 is the structure sectional view of one of embodiment of the present invention lamp bulb;
Fig. 2 is the right view of Fig. 1;
Fig. 3 is the A-A sectional view of Fig. 2;
Fig. 4 is the partial enlarged drawing of label 20 part in Fig. 1;
Fig. 5 is the schematic diagram that LED light source sends diffused light;
Fig. 6 is the schematic diagram of diffused light in direct light after the refraction of reflection Lamp cup;
Fig. 7 is that the present invention is by one of multiple reflection Lamp cup embodiment forming shadow surface schematic diagram.
Number in the figure represents respectively: 1-double concave lens, 2-lamp outer casing, 3-lamp holder, 4-insulating base, 5-clear glass, 6-reflects Lamp cup, 7-LED light source, 8-LED light source both positive and negative polarity and heat radiation pole, 9-PCB circuit board, 10-covers Copper Foil, the interior lens of 11-double concave lens, the outer lens of 12-double concave lens, 13-rivet, 14-screw, 15-O RunddichtringO, 16-O RunddichtringO, 17-O RunddichtringO, 18-power supply lead wire, step in 19-shell, 20-partial enlargement, 21-metallic support, 22-six reflects the double concave lens of Lamp cup light fixture, R-concavees lens curvature.
Detailed description of the invention
According to accompanying drawing, the invention will be further described below:
Fig. 1-Fig. 4 is the lamp bulb assembly structure schematic diagram of one of the embodiment of the present invention, it is by double concave lens 1, lamp outer casing 2, lamp holder 3, insulating base 4, clear glass 5, reflection Lamp cup 6 and be with the main parts size such as the PCB 9 of LED light source to form, wherein: lamp outer casing 2 loads and protect the container of the parts such as interiors of products circuit and plays thermolysis; Power frequency civil power is introduced by lamp holder 3; Insulating base 4 is born lamp holder and the interconnective effect of lamp outer casing 2 and is had safe insulation effect; Clear glass 5 protects the outer minute surface of double concave lens 1 not contaminated; Reflection Lamp cup 6 has heat radiator effect, also has the effect that the diffused light sent by LED light source converts direct light to simultaneously; PCB 9 weldering carried device and the LED light sources 7 such as the power supply of light fixture, simultaneously by it cover Copper Foil 10 junction temperature of LED light source PN junction can be passed to reflection Lamp cup 6.
The concrete assembly structure of this embodiment is: clear glass 5 is connected as one by outer lens 12 frame of technique for sticking and double concave lens 1; The lamp holder 3 having welded power supply lead wire 18 is connected with insulating base 4 by tight fit pressure-riveting process, and completes sealing therebetween by O type circle 15; Shell 2 is connected as one by screw 14 again by insulating base 4, completes sealing therebetween by O type circle 16; The PCB 9 that reflection Lamp cup 6 has carried the devices such as power supply and LED light source by rivet 13 or screw and weldering connects as one; The PCB 9 of having welded power supply lead wire 18 is loaded in shell 2, now reflecting step 19 in the edge of Lamp cup 6 and shell is close in one plane, again double concave lens 1 is assemblied on the collar extension of shell 2, make both riveted joints integrally by tight fit pressure-riveting process, complete sealing therebetween by O type circle 17 between the two.
The structure specific descriptions that the present invention solves LED light source PN junction heat radiation Heat Conduction Problems are: the PN junction of LED light source 7 sends junction temperature and outwards conducted by the both positive and negative polarity on it and heat radiation pole 8, by both positive and negative polarity and heat radiation pole 8 by soldering tin technique and PCB 9 to cover Copper Foil 10 integrally welded, the knot heat on PN junction is directly conducted to and covers on Copper Foil 10.Due to reflection Lamp cup 6 outer bottom face by the effect of rivet 13 or screw with cover Copper Foil 10 and fit tightly and form thermal conductive surface, technical measures are taked to make it heat conduction non-conducting therebetween, make LED light source both positive and negative polarity and heat radiation pole 8, cover Copper Foil 10, reflection Lamp cup 6 the triangular thermal resistance in outer bottom face minimum, it is fastest that thermal conductance goes out, because aluminum reflection Lamp cup has larger heat radiation heat-conducting area and larger heat absorption volume, thus make PN junction be in the thermal equilibrium state of less than 120 DEG C, thus control the quick light decay of light source.By tight fit pressure-riveting process, double concave lens 1 is assemblied on shell 2, make both riveted joints integrally, its technique makes the interior step 19 of the edge of reflection Lamp cup 6 and shell 2 be close in one plane, this kind of state can by temperature conduction that reflection Lamp cup adsorbs on metal shell, and the temperature conduction exceeding environment can leave by shell to air.Forming the basic structure that the present invention solves LED light source PN junction heat radiation Heat Conduction Problems is thus: LED light source both positive and negative polarity and heat radiation pole 8 → pcb board cover step 19 → lamp outer casing 2 in Copper Foil 10 → reflection Lamp cup 6 → shell.
As another application example (see Fig. 7) of the same design of the present invention, if the shadow surface of light fixture is made up of multiple reflection Lamp cup, then by metallic support 21, the shell of each reflection Lamp cup and light fixture is connected into entirety, forming thermal conduction path makes light fixture that environment for use can be utilized to dispel the heat, in this case, LED light source PN junction heat radiation conductive structure of the present invention is: LED light source both positive and negative polarity covers step 19 → lamp outer casing 2 in Copper Foil 10 → reflection Lamp cup 6 → metallic support 21 → shell with heat radiation pole 8 → pcb board.
In the heat transfer process solving the heat radiation of LED light source PN junction, intermetallic contact can smear the material of conduction estersil class, to reduce thermal resistance therebetween.
The Lens Design of the adjustment irradiating angle of LED lamp is become orthogonal how stupefied strip double concave lens 1 by the present invention, is arranged on lamp outer casing 2 front end.The one side of double concave lens 1 is interior lens 11, and another side is outer lens 12, and how stupefied bar lens in its one side are mutually vertical with the how stupefied bar lens on another side, and interior outer lens adjusts the irradiating angle of light fixture by its R curvature of adjustment.Wherein: the upper and lower length direction of adjustment wish lighting area is responsible for by interior lens 11, changes the adjustment that its R curvature can realize length; Outer lens 12 is responsible for adjustment for the width about lighting area, changes the adjustment that its R curvature also can realize width.This orthogonal how stupefied strip double concave lens is when adjusting the irradiating angle of light fixture, the matrix curvilinear plane of positive and negative two lens does not intersect, when direct light carries out decomposing and reflecting betwixt, its process completes in the transparent material forming lens, and its light loss is less.
Orthogonal how stupefied strip double concave lens 1 is a single-piece, its area is determined according to the light-emitting area of LED lamp, it can be the size of a reflection Lamp cup, also can be the matrix area size that multiple reflection Lamp cup is arranged in, as the double concave lens 22 of six reflection Lamp cup light fixtures.The projective structure of the LED lamp light formed thus is: LED light source 7 → reflection Lamp cup 6 → double concave lens 1 or 22 → clear glass 5.
Fig. 5 is the signal that LED light source sends diffused light.The finished product of LED light source all encapsulates the convex lens of hemispherical transparent resin class on its luminous point, in order to adjust the irradiating angle of LED chip luminescence, its light sent is hemispheric diffused light, direction due to diffused light is too general too loose, the limited light intensity Lm value that LED light source sends is made delivery capabilities poor by disperseing, as directly added the adjustment that concavees lens (or convex lens) carry out light fixture irradiating angle on light source under this state, its light loss can be larger.
Fig. 6 is the signal of diffused light in direct light after the refraction of reflection Lamp cup.As installed reflection Lamp cup on LED light source, then many diffused lights are transformed into direct light, owing to reflecting in Lamp cup through electroplating processes, its light loss is less, the uniformity in direct light direction is good, the penetrability of light projector strengthens, and this lays a good foundation for LED light source lamp scioptics adjust irradiating angle further.
Fig. 7 is one of embodiment of the present invention six reflection Lamp cup composition shadow surface.According to basic structure of the present invention and manufacture method, according to the different scopes of application and purposes, the present invention can produce the series of products by the cup-shaped one-tenth of varying number reflectoscope.As this example have employed six shadow surfaces reflecting Lamp cups 6 and form light fixture, in PCB 9 below reflection Lamp cup 6, weldering has been carried and has been reflected the corresponding LED light source of Lamp cup with each, rim of a cup edge and the metallic support 21 of reflection Lamp cup 6 connect in aggregates, the edge of metallic support 21 is closely connected in one plane with step 19 in lamp outer casing 2, and double concave lens 22 and clear glass 5 are installed in the top of metallic support 21.

Claims (6)

1. a structure for LED lamp, comprises the PCB composition of lamp outer casing, reflection Lamp cup, lens and band LED light source, it is characterized in that:
To be dispelled the heat conductive structure by LED light source both positive and negative polarity and the heat radiation pole PN junction that step and lamp outer casing in Copper Foil, reflection Lamp cup, lamp outer casing form LED light source of covering by the PCB that is coupled to each other, the heat that when making luminous by LED light source, PN junction sends to cover in Copper Foil → reflection Lamp cup → lamp outer casing step → lamp outer casing path in air along LED light source both positive and negative polarity and heat radiation pole → PCB;
Be made up of the projective structure of LED lamp light by reflection Lamp cup, double concave lens and the clear glass arranged above it LED light source.
2. the structure of a kind of LED lamp according to claim 1, it is characterized in that reflection Lamp cup is when being multiple, to be dispelled the heat conductive structure by LED light source both positive and negative polarity and the heat radiation pole PN junction that step and lamp outer casing in Copper Foil, reflection Lamp cup, metallic support, lamp outer casing form LED light source of covering by the PCB that is coupled to each other.
3. the structure of a kind of LED lamp according to claim 1 and 2, is characterized in that the Copper Foil that covers of described PCB is fitted tightly by rivet or screw with the outer bottom of reflection Lamp cup.
4. the structure of a kind of LED lamp according to claim 1 and 2, when it is characterized in that the shadow surface of described light fixture is single reflection Lamp cup, in lamp outer casing, step fits tightly with the edge of reflection Lamp cup, when the shadow surface of described light fixture is multiple reflection Lamp cup composition, reflectoscope cup fits on metallic support, then is fitted tightly by step in the edge of metallic support and lamp outer casing.
5. the structure of a kind of LED lamp according to claim 1, it is characterized in that described double concave lens is orthogonal how stupefied strip double concave lens, its one side is interior lens, another side is outer lens, how stupefied bar lens in its one side are mutually vertical with the how stupefied bar lens on another side, and interior outer lens adjusts the irradiating angle of light fixture by adjusting its R curvature.
6. the structure of a kind of LED lamp according to claim 5, it is characterized in that described orthogonal how stupefied strip double concave lens is a single-piece, its area is determined according to the light-emitting area of LED lamp, it can be the size of a reflection Lamp cup, also can be the matrix area that multiple reflection Lamp cup is arranged in.
CN201210077562.7A 2012-03-22 2012-03-22 Structure of LED lamp Expired - Fee Related CN103322436B (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103592227B (en) * 2013-10-30 2016-02-03 安徽华菱西厨装备股份有限公司 The food conforming detection system of appearance Color Quality and detection method when culinary art stops
CN105179979A (en) * 2015-10-19 2015-12-23 厦门多彩光电子科技有限公司 LED lamp

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CN200952673Y (en) * 2006-10-11 2007-09-26 李竹 Electricity-saving major lamp
CN201072107Y (en) * 2007-08-29 2008-06-11 王洪华 High power LED illuminator cup used for fast heat conduction and radiation of industrial and mineral lamp
CN101924176A (en) * 2010-07-12 2010-12-22 深圳大学 Light-emitting diode packaging structure and packaging method thereof
CN201866541U (en) * 2010-10-25 2011-06-15 王洪华 Integral miner's lamp
CN202647236U (en) * 2012-03-22 2013-01-02 武汉南格尔科技有限公司 Structure of LED lamp

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Publication number Priority date Publication date Assignee Title
WO2012020830A1 (en) * 2010-08-11 2012-02-16 岩崎電気株式会社 Lamp and optical component

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN200952673Y (en) * 2006-10-11 2007-09-26 李竹 Electricity-saving major lamp
CN201072107Y (en) * 2007-08-29 2008-06-11 王洪华 High power LED illuminator cup used for fast heat conduction and radiation of industrial and mineral lamp
CN101924176A (en) * 2010-07-12 2010-12-22 深圳大学 Light-emitting diode packaging structure and packaging method thereof
CN201866541U (en) * 2010-10-25 2011-06-15 王洪华 Integral miner's lamp
CN202647236U (en) * 2012-03-22 2013-01-02 武汉南格尔科技有限公司 Structure of LED lamp

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