CN103322436A - Structure of LED lamp - Google Patents
Structure of LED lamp Download PDFInfo
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- CN103322436A CN103322436A CN2012100775627A CN201210077562A CN103322436A CN 103322436 A CN103322436 A CN 103322436A CN 2012100775627 A CN2012100775627 A CN 2012100775627A CN 201210077562 A CN201210077562 A CN 201210077562A CN 103322436 A CN103322436 A CN 103322436A
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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
Technical field
The present invention relates to the LED field of illumination lamp technology, be specifically related to a kind of structure of LED light fixture.
Background technology
The lighting of making of white LED light source is at present promoted the use of for many years on market, but its performance on market is undesirable: light decay comparatively fast causes light fixture shorter service life in the first use procedure; 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, and above 2 become the technical bottleneck that the LED light fixture is promoted the use of at lighting field.
LED light fixture in use light decay comparatively fast causes light fixture shorter one of the main reasons in service life, that the led light source junction temperature that its PN junction produces when luminous lighting can not get control, make due to junction temperature is elevated to more than 120 ℃, generally believe that in the LED light trade it is to reduce LED light fixture light decay, ensure the long-life key of LED light fixture that junction temperature is controlled at below 120 ℃.
In order to realize the thermal equilibrium control of LED junction temperature, LED light fixture manufacturer has proposed multiple solution, wherein adopting aluminium base heat radiation form is the main flow of present production application, because the heat conduction heat absorptivity of aluminium sheet is good, it is generally used for needing cpu chip of heat radiation heat conduction aspect that is welded, aluminium base is used for the LED light fixture, the both positive and negative polarity of led light source and heat radiation extremely directly are welded on pcb board, can accomplish the thermal resistance minimum and that thermal conductance goes out is fastest, aluminium base has certain volume and area to absorb heat and heat conduction simultaneously, make PN junction be in thermal equilibrium state below 120 ℃, therefore the application of this heat sink conception aspect small power LED illumination is comparatively successful, steeps such as low-power lighting, the back lighting of mobile phone and LCDs etc.If aluminium base heat radiation form is used for high-power (tens watts and even upper hectowatt) LED lighting, such as street lamp, it needs tens of led light sources even up to a hundred individual, and also need to be arranged in matrix structure, in this case because area and small volume that aluminium base is assigned to respect to each light source institute correspondence, can not within moment, the junction temperature on the led light source PN junction be taken away, can not make PN junction be in thermal equilibrium state below 120 ℃, its light decay of the light fixture of producing under this situation is larger, manufacturer is in order to make PN junction be in thermal equilibrium state below 120 ℃, just install the metal heat sink of larger volume and area additional at the aluminum base PCB circuit board, but this measure has lost moment heat radiator chance, is difficult to make PN junction to be in thermal equilibrium state below 120 ℃.In order to address this problem, some producers have also proposed to utilize the solution of fan wind-cooling heat dissipating, also having proposed of having utilized the Cooling Solution that radiator liquid flows etc. in metallic conduit, but all there are the problems such as stability, reliability and economy of light fixture long-time running, thereby cause present high-power LED lighting fixture applying on market to be the situation of stagnation.
The luminous full sphere-like that is 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 are easy to compile back reflection by the light that the measures such as reflection shield, speculum can not project illuminated area and go to illuminated area, thereby increase the delivery capabilities of light fixture on illuminated area.And led light source is because principle of luminosity and manufacturing technology different, the hemisphere shape of its luminous approximate 180 ° of three-dimensional viewpoins, can only there be hemispheric stereo luminous, hemisphere is sheltered from by the PCB circuit board that led light source is welded in addition, so the LED light fixture can not simply strengthen its delivery capabilities by measures such as reflection shield, speculums.In order to strengthen the delivery capabilities of LED light fixture, the light fixture manufacturer all can add an optical lens in the led light source outside, adjust the irradiating angle of light fixture, the light that light fixture is sent more reasonably projects on the area of wish illumination, the light modulation lens of installing on the high-power LED lamp at present are the single face concavees lens, in order to reach the design illumination Lx value of wanting lighting area length direction and cross direction, the concavees lens bottom just is designed to ellipse, it carries out the light splitting projection to length direction and cross direction respectively for same concave surface has two kinds of R curvature, the light that sends when led light source is divided the light time by this lens reflection, and light can produce interference capability and exclusiveness so that the larger problem of light loss occur at two kinds of R curvature intersection places.Simultaneously, the projecting direction of led light source light by the hemisphere centre of sphere to the hemisphere spherical radiation, the diffusion form that is infinite direction, then the light projector ability is just poor too much for its direction, when this diffused light scioptics are adjusted the irradiating angle of light, cause the loss of emergent light after lens reflection is adjusted larger because the incidence angle uniformity of diffused light is poor, 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 has weakened the high advantage of led light source Lm/w value greatly.
Summary of the invention
The present invention promotes the use of the problems such as the PN junction heat radiation of middle existence and thermal balance question and delivery capabilities be not good enough for solving present LED light fixture at lighting field, proposes a kind of structure of LED light fixture.
The technical scheme that the present invention takes is:, a kind of structure of LED light fixture, comprise lamp outer casing, reflection Lamp cup, lens and form with the PCB circuit board of led light source, it is characterized in that:
By led light source both positive and negative polarity and the heat radiation utmost point PN junction heat radiation conductive structure that step and lamp outer casing etc. in Copper Foil, reflection Lamp cup, the lamp outer casing consist of led light source that covers by the PCB circuit board that is coupled to each other, so that the heat that PN junction sends when luminous by led light source is transmitted in the air along step in the Copper Foil → reflection Lamp cup → lamp outer casing → lamp outer casing path of covering of led light source both positive and negative polarity and the heat radiation utmost point → PCB circuit board;
Consisted of the projective structure of LED light fixture light by reflection Lamp cup, double concave lens and the clear glass etc. of its top setting by led light source.
The present invention also has following technical characterictic:
The reflection Lamp cup is when being a plurality of, by led light source both positive and negative polarity and the heat radiation utmost point PN junction heat radiation conductive structure that step and lamp outer casing in Copper Foil, reflection Lamp cup, metallic support, the lamp outer casing consist of led light source that covers by the PCB circuit board that is coupled to each other.
The Copper Foil that covers of described PCB circuit board fits tightly by rivet or screw with the outer bottom that reflects Lamp cup.
When the shadow surface of described light fixture is single reflection Lamp cup, step fits tightly with the edge of reflection Lamp cup in the lamp outer casing, the shadow surface of described light fixture is a plurality of reflection Lamp cups when forming, and the reflectoscope cup fits on the metallic support, is fitted tightly by step in the edge of metallic support and the lamp outer casing again.
Described double concave lens is orthogonal how stupefied strip double concave lens, and its one side is interior lens, and another side is outer lens, and interior outer lens can be adjusted by adjusting its R curvature the irradiating angle of light fixture.
Described orthogonal how stupefied strip double concave lens is a single-piece, and its area is decided according to the light-emitting area of LED light fixture, and it can be the size of a reflection Lamp cup, also can be the matrix area that a plurality of reflection Lamp cups are arranged in.
Characteristics of the present invention and beneficial effect are:
1. be the reflection Lamp cup of each led light source outfit than the aluminium base heat radiation large several times area of form and volume, junction temperature on the led light source PN junction can be adsorbed away within moment, and make PN junction be in thermal equilibrium state below 120 ℃, thereby effectively controlled the light decay of light source.
2. the diffused light that led light source is sent is changed into the direct light of a direction, adjusts the irradiating angle of light fixture for LED light fixture interpolation optical lens and haves laid a good foundation.
3. the single face concavees lens (or single face convex lens) of prior art being adjusted irradiation angle change orthogonal how stupefied strip double concave lens into, thereby make the light loss of lens reduce delivery capabilities and the penetration capacity that has improved light, uniformity and the directionality of light projector are better.
4. by led light source both positive and negative polarity and the heat radiation utmost point PN junction heat radiation conductive structure that step in Copper Foil, reflection Lamp cup, metallic support (during a plurality of reflection Lamp cup), the lamp outer casing and lamp outer casing consist of led light source that covers by the PCB circuit board that is coupled to each other, so that the heat that PN junction sends when luminous by led light source is transmitted in the air along the interior step of Copper Foil → reflection Lamp cup → metallic support (the during a plurality of reflection Lamp cup) → lamp outer casing → lamp outer casing path of covering of led light source both positive and negative polarity and the heat radiation utmost point → PCB circuit board, solved led light source PN junction heat dissipation problem when luminous.
5. reflection Lamp cup, double concave lens and the clear glass that is arranged by its top by led light source consists of the projective structure of LED light fixture light, has the effect that improves LED light fixture delivery capabilities, strengthened the illuminating effect of light fixture.
Description of drawings
Fig. 1 is the structure cutaway view of one of embodiment of the invention lamp bulb;
Fig. 2 is the right view of Fig. 1;
Fig. 3 is the A-A cutaway view of Fig. 2;
Fig. 4 is the partial enlarged drawing of label 20 parts among Fig. 1;
Fig. 5 is the schematic diagram that led light source sends diffused light;
Fig. 6 is diffused light is direct light after the refraction of reflection Lamp cup schematic diagram;
Fig. 7 is one of the present invention embodiment of being made of shadow surface a plurality of reflection Lamp cups schematic diagram.
Number in the figure represents respectively: 1-double concave lens, 2-lamp outer casing, 3-lamp holder, the 4-insulating base, the 5-clear glass, 6-reflects Lamp cup, the 7-LED light source, 8-LED light source both positive and negative polarity and the heat radiation utmost point, 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, the 14-screw, the 15-O RunddichtringO, 16-O RunddichtringO, 17-O RunddichtringO, the 18-power supply lead wire, step in the 19-shell, 20-is local to amplify the 21-metallic support, the double concave lens of six reflections of 22-Lamp cup light fixture, R-concavees lens curvature.
The specific embodiment
The invention will be further described according to accompanying drawing for the below:
Fig. 1-Fig. 4 is the lamp bulb assembly structure schematic diagram of one of embodiment of the invention, it forms by double concave lens 1, lamp outer casing 2, lamp holder 3, insulating base 4, clear glass 5, reflection Lamp cup 6 and with the main parts size such as PCB circuit board 9 of led light source, and wherein: lamp outer casing 2 is to load and the container of the parts such as protection interiors of products circuit and play thermolysis; Lamp holder 3 is introduced the power frequency civil power; Insulating base 4 is born lamp holder and lamp outer casing 2 interconnective effects and is had the safe insulation effect; The outer minute surface of clear glass 5 protection double concave lens 1 is not contaminated; Reflection Lamp cup 6 has the heat radiator effect, also has the effect that the diffused light that led light source is sent converts direct light to simultaneously; Device and the led light sources 7 such as power supply of light fixture carried in PCB circuit board 9 weldering, simultaneously by covering Copper Foil 10 and the junction temperature of led light source PN junction can be passed to reflection Lamp cup 6 on it.
The concrete assembly structure of this embodiment is: clear glass 5 connects as one by outer lens 12 frames of technique for sticking and double concave lens 1; The lamp holder 3 that has welded power supply lead wire 18 is connected with insulating base 4 by the tight fit pressure-riveting process, and the sealing of finishing therebetween by O type circle 15; Insulating base 4 connects as one shell 2 by screw 14 again, the sealing of finishing therebetween by O type circle 16; Reflection Lamp cup 6 has carried the device such as power supply and led light source by rivet 13 or screw and weldering PCB circuit board 9 connects as one; The PCB circuit board 9 that has welded power supply lead wire 18 is packed in the shell 2, the edge and the interior step 19 of shell that reflect Lamp cup 6 this moment are close in one plane, again double concave lens 1 is assemblied on the collar extension of shell 2, make both riveted joints become whole, the sealing of finishing therebetween by O type circle 17 between the two by the tight fit pressure-riveting process.
The structure specific descriptions that the present invention solves led light source PN junction heat radiation Heat Conduction Problems are: send junction temperature on the PN junction of led light source 7 and outwards conduct by the both positive and negative polarity on it and the heat radiation utmost point 8, with both positive and negative polarity and the heat radiation utmost point 8 by on soldering tin technique and the PCB circuit board 9 to cover Copper Foil 10 integrally welded, knot heat on the PN junction is directly conducted to covers on the Copper Foil 10.Since the effect of reflection Lamp cup 6 outer bottom faces by rivet 13 or screw with cover Copper Foil 10 and fit tightly and consist of thermal conductive surface, take technical measures to make it heat conduction non-conducting therebetween, the triangular thermal resistance minimum of outer bottom face that makes led light source both positive and negative polarity and the heat radiation utmost point 8, covers Copper Foil 10, reflects Lamp cup 6, 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, thereby make PN junction be in thermal equilibrium state below 120 ℃, thereby controlled the quick light decay of light source.By the tight fit pressure-riveting process double concave lens 1 is assemblied on the shell 2, make both riveted joints become whole, its technique is close in one plane the edge of reflection Lamp cup 6 and the interior step 19 of shell 2, the temperature conduction that this kind state can adsorb reflection on the Lamp cup is to metal shell, and the temperature conduction that shell can will exceed environment leaves to air.Consisting of thus the basic structure that the present invention solves led light source PN junction heat radiation Heat Conduction Problems is: led light source both positive and negative polarity and the heat radiation utmost point 8 → pcb board cover the interior step 19 → lamp outer casing 2 of Copper Foil 10 → reflection Lamp cup 6 → shell.
Another application example (seeing Fig. 7) as the same design of the present invention, if the shadow surface of light fixture is comprised of a plurality of reflection Lamp cups, then can the shell that each reflects Lamp cup and light fixture be connected into integral body by metallic support 21, forming thermal conduction path makes light fixture can utilize the environment for use heat radiation, in this case, led light source PN junction heat radiation conductive structure of the present invention is: the step 19 → lamp outer casing 2 in Copper Foil 10 → reflection Lamp cup 6 → metallic support 21 → shell that covers of led light source both positive and negative polarity and the heat radiation utmost point 8 → pcb board.
In the heat transfer process that solves the heat radiation of led light source PN junction, intermetallic contact can be smeared the material of conduction estersil class, to reduce thermal resistance therebetween.
The present invention becomes orthogonal how stupefied strip double concave lens 1 with the Lens Design of the adjustment irradiating angle of LED light fixture, and it is arranged on lamp outer casing 2 front ends.The one side of double concave lens 1 is interior lens 11, and another side is outer lens 12, and interior outer lens is adjusted the irradiating angle of light fixture by adjusting its R curvature.Wherein: interior lens 11 are responsible for adjusting and are wanted lighting area length direction up and down, change the adjusting that its R curvature can realize length; Outer lens 12 is responsible for adjusting the width of wanting about lighting area, changes the adjusting 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, direct light decomposes betwixt and when reflecting, its process is to finish in the transparent material that consists of lens, and its light loss is less.
Orthogonal how stupefied strip double concave lens 1 is a single-piece, its area is decided according to the light-emitting area of LED light fixture, it can be the size of a reflection Lamp cup, also can be the matrix size that a plurality of reflection Lamp cups are arranged in, such as the double concave lens 22 of six reflection Lamp cup light fixtures.The projective structure of the LED light fixture light that consists of 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 at its luminous point, in order to adjust the luminous irradiating angle of led chip, its light that sends is hemispheric diffused light, because the diffusion direction of light is too general too loose, the limited light intensity Lm value that led light source sends is dispersed and makes delivery capabilities poor, carry out the adjustment of light fixture irradiating angle as directly add concavees lens (or convex lens) on light source under this state, its light loss can be larger.
Fig. 6 is diffused light is direct light after the refraction of reflection Lamp cup signal.As the reflection Lamp cup is installed at led light source, then many diffused lights are transformed into direct light, because process electroplating processes in the reflection Lamp cup, its light loss is less, the high conformity of direct light direction, the penetrability of light projector strengthens, and this further adjusts irradiating angle for led light source light fixture scioptics and lays a good foundation.
Fig. 7 is that six reflections of the present invention Lamp cup forms one of embodiment of 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.Adopted the shadow surface of six reflection Lamp cup 6 composition light fixtures such as this example, the led light source corresponding with each reflection Lamp cup carried in weldering on the PCB circuit board 9 of reflection Lamp cup 6 belows, rim of a cup edge and the metallic support 21 of reflection Lamp cup 6 are linked to be an integral body, the edge of metallic support 21 closely links to each other in one plane with the interior step 19 of 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. the structure of a LED light fixture comprises lamp outer casing, reflection Lamp cup, lens and forms with the PCB circuit board of led light source, it is characterized in that:
By led light source both positive and negative polarity and the heat radiation utmost point PN junction heat radiation conductive structure that step in Copper Foil, reflection Lamp cup, the lamp outer casing and lamp outer casing consist of led light source that covers by the PCB circuit board that is coupled to each other, so that the heat that PN junction sends when luminous by led light source is transmitted in the air along step in the Copper Foil → reflection Lamp cup → lamp outer casing → lamp outer casing path of covering of led light source both positive and negative polarity and the heat radiation utmost point → PCB circuit board;
Consisted of the projective structure of LED light fixture light by reflection Lamp cup, double concave lens and the clear glass of its top setting by led light source.
2. the structure of a kind of LED light fixture according to claim 1, when to it is characterized in that reflecting Lamp cup be a plurality of, by led light source both positive and negative polarity and the heat radiation utmost point PN junction heat radiation conductive structure that step and lamp outer casing in Copper Foil, reflection Lamp cup, metallic support, the lamp outer casing consist of led light source that covers by the PCB circuit board that is coupled to each other.
3. the structure of a kind of LED light fixture according to claim 1 and 2 is characterized in that the Copper Foil that covers of described PCB circuit board fits tightly by rivet or screw with the outer bottom that reflects Lamp cup.
4. the structure of a kind of LED light fixture according to claim 1 and 2, when the shadow surface that it is characterized in that described light fixture is single reflection Lamp cup, step fits tightly with the edge of reflection Lamp cup in the lamp outer casing, when the shadow surface of described light fixture is a plurality of reflection Lamp cups composition, the reflectoscope cup fits on the metallic support, is fitted tightly by step in the edge of metallic support and the lamp outer casing again.
5. the structure of a kind of LED light fixture 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, and another side is outer lens, and interior outer lens can be adjusted by adjusting its R curvature the irradiating angle of light fixture.
6. the structure of a kind of LED light fixture according to claim 5, it is characterized in that described orthogonal how stupefied strip double concave lens is a single-piece, its area is decided according to the light-emitting area of LED light fixture, it can be the size of a reflection Lamp cup, also can be the matrix area that a plurality of reflection Lamp cups are arranged in.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210077562.7A CN103322436B (en) | 2012-03-22 | 2012-03-22 | Structure of LED lamp |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210077562.7A CN103322436B (en) | 2012-03-22 | 2012-03-22 | Structure of LED lamp |
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| CN103322436A true CN103322436A (en) | 2013-09-25 |
| CN103322436B CN103322436B (en) | 2015-02-25 |
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| CN201210077562.7A Expired - Fee Related CN103322436B (en) | 2012-03-22 | 2012-03-22 | Structure of LED lamp |
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| CN103592227A (en) * | 2013-10-30 | 2014-02-19 | 安徽华菱西厨装备股份有限公司 | System for detecting surface color quality consistency of foodstuff at end of cooking and detection method |
| CN104595757A (en) * | 2014-12-26 | 2015-05-06 | 深圳市众明半导体照明有限公司 | Led lamp |
| 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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Application publication date: 20130925 Assignee: WUHAN KINYUN SCIENCE AND TECHNOLOGY CO., LTD. Assignor: Wuhan Nangeer Science & Technology Co., Ltd. Contract record no.: 2013420000183 Denomination of invention: Structure of LED lamp License type: Exclusive License Record date: 20131226 |
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