Source: https://patents.google.com/patent/CN103443537B/en
Timestamp: 2020-07-08 08:46:46
Document Index: 719026512

Matched Legal Cases: ['art 111', 'art 143', 'art 143', 'art 143', 'art 143', 'art 511', 'arts 523', 'art 523', 'art 523', 'art 511', 'art 511', 'art 143']

CN103443537B - Lighting apparatus - Google Patents
CN103443537B
CN103443537B CN201280012746.3A CN201280012746A CN103443537B CN 103443537 B CN103443537 B CN 103443537B CN 201280012746 A CN201280012746 A CN 201280012746A CN 103443537 B CN103443537 B CN 103443537B
CN201280012746.3A
CN103443537A (en
P·J·M·布克姆斯
A·A·M·玛里纽斯
H·尼科尔
A·范德帕德
2011-12-12 Priority to US61/569,353 priority
2012-01-04 Application filed by 飞利浦照明控股有限公司 filed Critical 飞利浦照明控股有限公司
2013-12-11 Publication of CN103443537A publication Critical patent/CN103443537A/en
2018-09-21 Publication of CN103443537B publication Critical patent/CN103443537B/en
229910003726 AI2O3 Inorganic materials 0.000 description 9
239000010421 standard materials Substances 0.000 description 1
The present invention provides a kind of lighting apparatus (100), wherein at least one light source (121) is arranged to generate light.The lighting apparatus includes electrical isolation radiator element (111), and conductive layer (120) is arranged in using mechanical fastening device (130) on the electrical isolation radiator element.At least one light source is arranged as being in contact with the conductive layer.
Method present invention relates generally to lighting apparatus and for assembling lighting apparatus, the lighting apparatus and for assembling The method of lighting apparatus is suitable for that the large-scale production of LED bulb is transformed.
For the high market penetration of light emitting diode lighting equipment (LED illumination device), transformation lamp is extremely important 's.LED based transformation lamp is normally used for replacing conventional incandescent, and hereinafter referred to as LED bulb.For changing The typical scenario for making arrangement LED in lamp (such as Endura LED bulbs of Philips) is that LED is arranged in printed circuit board (PCB) on, then the PCB is mounted to the metal heat sink of a part for the pedestal to form LED bulb using metallic screw On.Metal heat sink is typically prepared pre-drilled hole so that PCB can be installed at scheduled position.In addition, LED bulb generally includes the cap for being connected to pedestal and the glass bulb for being arranged to encapsulating LED.
Although in general above system is effective, heat caused by wherein LED when realizing effective LED bulb It is shed via metal heat sink, but a kind of alternative is needed to be used to LED being mounted in LED bulb.
It is an object of the invention at least provide a kind of improved lighting apparatus and use being very suitable for large-scale production In the method for assembling this lighting apparatus.
This purpose by according to the lighting apparatus of idea of the invention such as accompanying independent claim defined in Method is realized.Preferred embodiment illustrates in the dependent claims and in description below and attached drawing.
Thus, concept according to the present invention in a first aspect, providing a kind of lighting apparatus, which includes by cloth It is set at least one light source, electrical isolation radiator element and conductive layer for generating light.At least one light source be arranged to It is few to be thermally contacted with conductive layer, but be preferably in electrical contact with conductive layer, and conductive layer is mounted using mechanical fastening device To radiator element.Thus, conductive layer is well fixed on radiator element in order to realize, has used mechanical fasteners dress It sets, this is good compared with such as bonding or paint-on technique (such as utilizing thick-layer technology) or film are handled, all these The complex process that bonding, coating or thin film technique are required for expensive equipment and need the solidification of chemical material and use.This Outside, it using to the appropriately designed of mechanical fastening device, is used as a kind of by one or more source alignments to radiator The advantageous manner on precalculated position on element.This can for example by for mechanical fastening device provide recess with receive light source come It realizes (light source is generally arranged to so that it is projected upwards from conductive layer).When fastening conductive layer and light source, light source is by being recessed Guiding, so that the precalculated position on acquisition radiator element is for light source.In addition, the design of clamp device can be made into So that the alignment of clamp device itself is convenient for for example realizing by using the shape of radiator element.It should be noted that clamp device Can be friction lock (non-active) type and form lock (active) type.
In the preferred embodiment of lighting apparatus, conductive layer is disposed between light source and the radiator element that is electrically insulated, from And low thermal resistance is provided between heat producing light sources and radiator element.It is thereby achieved that from the high efficiencies of heat transfer of light source and to radiator The thermal diffusion of element.Low thermal contact resistance for example realizes that then conductive layer is by cloth when forming conductive layer using copper or copper alloy It is set to and is for example in direct contact with ceramic heat sink element.The lighting apparatus phase that the PCB of this arrangement and the above-mentioned prior art is installed Than needing less component.In addition, clamp device, which can be arranged such that, allows scheduled freedom of movement, reduces and thermally expand The unmatched influence of coefficient.This further means that (100 DEG C or more) have less solder crackle at high temperature.It should be noted that conductive layer It can be monolithic or multilayer, such as include being deposited over electric-insulation heat-conduction substrate for what light source was connected to power supply Lead frame.
According to the embodiment of lighting apparatus, clamp device is arranged in distribution mechanical force at scheduled position.Institute's rheme Set can advantageously select on the electrically conductive and at least one light source close to.To in addition to conductive layer is fastened to heat dissipation Other than on device element, clamp device can realize conductive layer and radiator element at hot critical localisation (i.e. directly at heat source) Between be adequately thermally connected.This can for example be realized by selecting the suitable design to the contact surface up and down of clamp device. That is, clamp device is designed so that conductive layer and radiator element are pressed together in pre-position by clamp device.Such as Upper described, these positions are preferably selected to be close to each light source, so that providing good heat close to each heat producing light sources Contact.Thus, it in an installation step, is fixed on radiator element, is simultaneously from tight with the conductive layer of light source contacts The mechanical force set is fixedly mounted with to be distributed in an efficient way to fill providing at close to sources (or any other heat generating component) The thermo-contact divided.
In addition, by the way that for the individual pressure spot of each light source applications, lighting apparatus is not to advising in radiator element surface Then or the place of out-of-flatness becomes less sensitive.This will reduce the production cost on thermo-contact surface, because required to smooth The concern of degree tails off.
According to the embodiment of lighting apparatus, clamp device is clamp.The clamp can be made of metal, but can also be used Electrically insulating material is made.It is good between conductive layer and radiator element to thermally contact with a kind of convenient side by using clamp Formula is realized.Clamp can be advantageously arranged to realize using scheduled power sufficient between conductive layer and radiator element Thermo-contact, as described above.The installation of clamp can be completed in an installation step.Such as in the prior art using screw PCB is fixed on radiator and is compared, clamp device has a lot for the advantages of clamp.The method of the prior art needs multiple steps To complete installation and the fine manipulation to such as screw.In addition, it is very crucial using the torque of correct size to screw, because too High torque may cause PCB to damage, and too low torque may cause PCB (to correspond to radiator member here with its radiator Part) between thermally contact it is insufficient.However, allowing to provide the folder extremely accurate defined using the clamp of concept according to the present invention Holding force and quickly assembly.
According to the embodiment of lighting apparatus, conductive layer is arranged with electrical lead, and the electrical lead is configured at least one The power supply of a light source.Other than providing the thermal coupling between light source and radiator element, conductive layer is preferably designed to use In providing the electrical lead being arranged to as light source power supply, this is favourable.
According to the embodiment of lighting apparatus, conductive layer is flexible.Flexible conductive layer is advantageous, because it can be rolled over It is folded, such as around radiator element.In addition, flexible conductive layer provides the contact surface of bigger at its own between radiator element Product.
Further include the insulating layer being disposed at conductive layer according to the embodiment of lighting apparatus.The insulating layer can be by cloth Be set to support conductive layer, for example, when conductive layer have carve/the lead pattern that stamps out when.The insulating layer can also be by cloth Bring to Front covers the major part of the upper surface other than the region that light source is placed.Then, in the involucrum of lighting apparatus In the case of (glass bulb) rupture etc., which can improve the safety of lighting apparatus by completely cutting off charging member. The insulating layer may be utilized for positioning function.It should be noted that the insulating layer can also be an integrated part for conductive layer.
According to the embodiment of lighting apparatus, insulating layer (if present) and/or clamp device are reflexive, this is right It is advantageous in providing good optical property, that is, realizes that lighting apparatus has bloom efficiency.
According to the embodiment of lighting apparatus, conductive layer is disposed in clamp device, and conductive layer can be for example arranged to The contact surface of plastic covering clamp, and be used as being arranged to that light source is connected to the electrical lead of power supply.To provide A kind of arrangement electrical lead arrives the mode that facilitates of light source, while adequately thermal connection is provided between light source and radiator element.
According to the embodiment of lighting apparatus, conductive layer and clamp device overlap.Clamp device, which may, for example, be light source, is pacified Loaded on metal clamp thereon.This provides the good thermal connection between light source and radiator element and keeps seldom group Number of packages mesh.The power supply of light source can be provided by conductive layer, but can also be realized by dedicated arrangements of electric connection.Light source Can be such as LED encapsulation or chip on board (COB).Here, LED encapsulation can refer to adds with protective coating or certain machinery Solid LED, without refer mainly to be soldered to or direct surface mounted to substrate on it is unprotected face-down The LED of lead.However, light source can also be by one or more on the bare die (i.e. no dedicated protective coating) for forming conductive layer The form of a LED provides.On bare die is directly installed at the top of radiator element, so that under low thermal resistance, heat passes through bare die It is shed from LED to radiator element.No matter use encapsulation or bare die, connect light source it is preferable that passing through electric wire Engagement.Pay attention to being nonconducting even if bare die, which is still that can work completely；But bare die has in the horizontal Good heat conductivity is critically important.
According to the embodiment of lighting apparatus, mechanical fastening device is the recess in radiator element, which has and lead The corresponding shape of shape of electric layer.Recess also refers to recess, pothole or the hole that can be used to aid in alignment light source.Work as conductive layer When being received in the valley, movement of the conductive layer in its own plane is limited.In addition, conductive layer is adhered to radiator member Part.Light source can be LED encapsulation or chip on board (COB).The embodiment has a small amount of component, and because recess can conduct A part for the manufacture of radiator element is molded or carves, so the embodiment is easy assembly.If desired, additional clip It can be arranged to help conductive layer being fixed on radiator element.This promotes the thermal connection to radiator.
According to the embodiment of lighting apparatus, flexible threadiness arrangements of electric connection is arranged such that they extend to light source To provide electrical power.This is preferably as conductive layer need not include the lead frame for providing electrical power.Threadiness connection Device may, for example, be electric wire, being insulated or do not insulated.In addition, linear attachment device can be from the inside of the crown top of burner one It directly extends to light source or linear attachment device is connected to the conductive lead wire of light source, driving circuit or power supply can be placed in lamp In cap.Wire-bonds are that linear attachment device is connected to light source or the currently preferred mode of its conductive lead wire.Use flexibility Linear arrangements of electric connection be preferably as compared with the embodiment with lead frame or other big stiff members, it Improve the shock resistance of lighting apparatus.
According to the embodiment of lighting apparatus, each flexible linear arrangements of electric connection be placed in radiator element with this line Shape attachment device extends on that opposite side of light source.Thus, linear attachment device will not obscure the light sent out from light source.
According to the embodiment of lighting apparatus, radiator element includes two overlapping members.These components be spaced it is positive away from From so that overlapping region is formed between the two overlapping members, arrangements of electric connection is placed in overlapping region.This is excellent Choosing, because linear attachment device is held in place by radiator element.Overlapping member, which may, for example, be, to be spaced substantially The parallel plate of fixed distance (such as 1-10 millimeters).Overlapping region is preferably placed at the central area of lamp.
According to the embodiment of lighting apparatus, lighting apparatus includes the involucrum of fenced light source and radiator, and this is favourable.
According to the embodiment of lighting apparatus, radiator element is thermally coupled to involucrum, provides a kind of lighting apparatus, the illumination The light source of equipment is disposed in inside involucrum and on being thermally connected to the radiator element of involucrum.It is thereby achieved that from light source High efficiencies of heat transfer and thermal diffusion to radiator element and involucrum.
According to the embodiment of lighting apparatus, at least part and involucrum of radiator element are individually integrated components.That is, Radiator element is a part for involucrum, the involucrum such as glass bulb or light bulb.Less component is only needed in this way, and Manufacture becomes simpler, such as can be molded into radiator element and involucrum with identical material in a shared mold.
According to the embodiment of lighting apparatus, radiator element includes ceramic material, and this is favourable.Preferred material is half Transparent polycrystal alumina PCA.The material can be provided for the extraordinary optical properties of light bulb, such as provide needs Light scattering so that invisible provide very high total light transmission as LED while point light source.In addition, PCA is provided Extraordinary electrical isolation, and the pyroconductivity with 35W/mK.Thus, the heat management of lighting apparatus is improved.This permits Perhaps the Premium Features of equipment are integrated, to reduce the lamp using traditional metal heat sink and plastic reflector and/or scatterer Required number of components.
The second aspect of concept according to the present invention provides a kind of method for providing lighting apparatus, this method packet It includes：Conductive layer is provided；At least one light source is mounted on the upper surface of the conductive layer；The conductive layer is fastened on electric exhausted On edge radiator element, so that being arranged to be in direct contact with the radiator element on the downside of the conductive layer, wherein will The step that the conductive layer is fastened on the radiator element is realized using mechanical fastening device.It is thereby achieved that one kind Very simple highly recognition and only need several components, for the lighting apparatus with light source to be mounted on such as light bulb In mechanical conceptual.This method is very suitable for the large-scale production of lighting apparatus.
According to the embodiment of the method, this method further includes the steps that conductive layer provides electrical lead pattern, this is that have Profit.The step of providing electrical lead pattern can be realized advantageous by punching press.Punching press is advantageous, because of a large amount of electrical lead Pattern can be stamped out from conductive layer simultaneously, and the conductive layer such as copper foil is rolled up.However, it should be emphasized that other Suitable method can be used for obtaining the lead pattern for being suitable for idea of the invention.
According to the embodiment of the method, this method further includes providing electric insulation layer, and the electric insulation layer is arranged into On conductive layer.
With reference to embodiment described hereinafter, these and other aspects, features and advantages of idea of the invention will become It must understand and be elucidated with.Notice that the present invention relates to the combinations of all features, even if those features are drawn in different claims It states.
Idea of the invention is more fully described with reference to the drawings, in the accompanying drawings：
Fig. 1 is that the critical piece of the embodiment for the lighting apparatus for illustrating concept according to the present invention splits exploded perspective Figure；
Fig. 2 is the broken-open perspective view of the embodiment for the lighting apparatus for illustrating concept according to the present invention；
Fig. 3 a-c are showing for the step in the embodiment of the method for the lighting apparatus for assembling concept according to the present invention Meaning property diagram.
Fig. 4 a-b illustrate the component of the embodiment of the lighting apparatus of concept according to the present invention；
Fig. 5 is the perspective view of the embodiment of the lighting apparatus of concept according to the present invention；
Fig. 6 is the perspective view of the embodiment of the lighting apparatus of concept according to the present invention；
Fig. 7 a-b and Fig. 8 illustrate the embodiment of the lighting apparatus of concept according to the present invention；And
Fig. 9 is the top view of the schematic cross-section of any embodiment in the embodiment of Fig. 7 a-b and Fig. 8.
Idea of the invention will be described more fully hereinafter with reference to the accompanying drawings now.The following examples are as example quilt It is provided so that the disclosure will be comprehensive and complete, and comprehensively will convey idea of the invention to those skilled in the art Range.In entire description, similar label indicates similar element.In addition, hereinafter, the present invention will refer to and be used as light The Light-emitting diode LED of the preferred embodiment in source describes.This includes single led, multi-colored led, phosphor LED including multiple LED encapsulation of LED etc..In addition, idea of the invention is suitable for both solid state light emitting diode and Organic Light Emitting Diode OLED.
Fig. 1 is the broken-open perspective view of the lighting apparatus 100 of concept according to the present invention, and the figure shows the one of lighting apparatus Half, lighting apparatus is decomposed to show its critical piece.In addition, in the figure, for simplicity, for lighting apparatus to be connected The electric wire for being connected to the cap of lamps and lanterns and power supply being connected to light source is omitted.Lighting apparatus 100 includes being arranged to generate light Light source 121, light source 121 are installed on substrate 120.Substrate 120 is described in more detail below with reference to Fig. 3 and Fig. 4.
Light source 121 is welded to individual white on the electrical lead (not shown) being disposed on substrate 120 herein Color or blue, amber, red, green LED.Lighting apparatus further includes the involucrum 110 of hereinafter referred to as light bulb.Radiator member Part 111 is arranged to from the inner surface of light bulb 110 part outstanding, and when lighting apparatus 100 is assembled, substrate 120 is placed in On radiator element 111.Radiator element 111 is flat herein, has the inside for the inside bending for meeting light bulb 110 Profile 113 and straight opposite outer edge 114.Protrusion 112 is disposed on outer edge 114 to be substrate 120 and use Target seeker is provided in the clamp 130 for clipping to substrate on radiator element 111, the clamp 130 is described below.Heat dissipation Device element 111 and light bulb 110 are thermally coupled, and can be formed an integrated component in alternative embodiments.
According to the embodiment of lighting apparatus, involucrum can be manufactured by being monolithically formed, or by being combined together to form involucrum At least two parts formed (having been not shown).
According to the embodiment of lighting apparatus, involucrum includes ceramic material, and selectively, radiator element also include pottery Ceramic material.Ceramic material can be for example based on from by Al2O3、AlN、SiO2、Y3Al5O12(YAG)、Y3Al5O12Analog, Y2O3With TiO2And ZrO2The one or more materials selected in the group of composition.Term-Y3Al5O12Analog refers to essentially identical with YAG Lattice structure pomegranate stone system, but wherein Y and/or Al and/or O (especially Y and/or Al) at least partly respectively by Another ion is replaced, one or more of described another kind ion such as Sc, La, Lu and G.Term "based" refers to manufacture pottery The starting material of ceramic material substantially by it is referred herein go out material in one or more materials constitute, such as Al2O3Or Y3Al5O12(YAG).However, this is not precluded in the presence of a small amount of (remaining) binder material or dopant, such as Al2O3 Ti doping or in embodiment for YAG Ce doping.Ceramic material can have relatively good pyroconductivity.It is excellent Selection of land, pyroconductivity are at least about 5W/mK, for example, at least about 15W/mK, even more preferably at east about 100W/mK. YAG has pyroconductivity in the range of about 6W/mK, and the pyroconductivity of polycrystal alumina (PCA) is about 20W/mK's In range, and the pyroconductivity of AlN (aluminium nitride) is in the range of about 150W/mK or bigger.
It continues to refer to figure 1, radiator element 111 and light bulb 110 are by a kind of trnaslucent materials Al2O3It is made.Work as Al2O3 Within the scope of about 1300-1700 DEG C (such as within the scope of about 1300-1500 DEG C, such as 1300-1450 DEG C) at a temperature of burnt When knot, Al2O3High reflectivity can also be made into.This material is also known as " brown " PCA (polycrystalline in the prior art Aluminium oxide).
In the state of after the assembly of lighting apparatus 100, as shown in Figure 2, the fenced light source of light bulb 110 121 and dissipate Hot device element 111.Lighting apparatus further includes when being arranged in assembly for substrate 120 to be fixed to radiator element 111 Metal clamp 130.Substrate 120 is folded to be adapted to be mounted within around radiator element 111 along folding shaft herein, and The opening 129 being disposed at folding shaft is provided with to receive protrusion 112, i.e. radiator element 111 when mounted On target seeker.Clamp 130 is the metal foil being cut, which is shaped along folding shaft and folded to form tool There is the clamp of two groups of opposite resilient clamp members.Clamp 130 is arranged between this two groups of opposite resilient clamp members Radiator element 111 and substrate 120 are received, to provide the mechanical force for compressing substrate 120 and radiator element 111.Clamp 130 This two groups of opposite resilient clamp members be only partially shown in Fig. 1, wherein being formed together for keeping one in light source 121 The subassembly 121,131,133 and 134 of one group of hold assembly of the upper surface of a light source can see completely.It can be seen that subassembly 131 and 134 from the forward ratio of elongation of folding shaft of clamp 130 be disposed in the subassembly 133 between subassembly 131 and 134 to Preceding extension will be grown.The length of subassembly 133 defines the preset distance with folding shaft.In addition, between subassembly 131 and 134 Lateral separation be selected so that light source advantageously it is clamped 130 receive.To realize that light source 121 is dissipating by clamp 130 The positioning in two dimensions on hot device element 111, i.e., at a distance from the axis of the back side, and by by subassembly 131 and 134 It is spaced the lateral position that the positioning of the recess portion formed is realized.
The profile quilt of the subassembly 131,132,133,134 (and the other subassemblies that can't see in figure) of clamp 130 It is disposed with rounded portions 131a-134a, for creating the contact surface towards the radiator element 111 at mounted position, So that the mechanical force from clamp is assigned to scheduled position, the position of close to sources 121 is preferably leaned on.By arranging clamp 130 predetermined design, elasticity and material, scheduled assigned mechanical force is by application with fixed substrate 120 and radiator element 111, and ensure that they have sufficient thermal connection.
In the embodiment of lighting apparatus, clamp device be include that can be summed by means of such as screw or spring Two opposite hold assemblies clamp, to provide fixation (have been not shown) of the substrate on radiator element.
The power supply details for lighting apparatus 100 is also shown with continued reference to Fig. 2, Fig. 2.In the inlet of light bulb 110, supply Battery plate 142 is arranged such that receive connector part 143 towards radiator element 111.Thus, when being installed, radiator Element 111 is fixed together with power supply board 142.Electrical lead (can't see here, referring to 122 in Fig. 4 a) is disposed in substrate On 120, substrate 120 is placed so that electrical lead is connected to connector part 143 when being installed in substrate 120.To, Light source 121 and the electrical interconnection of driver are provided in the edge of substrate 120 with connector part 143, connector part 143 It is coupled to the drive circuit (not shown) being arranged in cap 140 further through electric wire 141.
In the embodiment of the lighting apparatus 500 described with reference to figure 5, lighting apparatus 500 includes hollow and basic in circle The ceramic heat sink 511 of barrel shape, the radiator 511 have partially enclosed upper surface 511c and are coupled in opposite Cap 540 on lower end.The cylindrical shape of radiator 511 is arranged in two steps 511a and 511b with different-diameter, with So that the top 511a of the radiator element has than lower part 511b less diameters.In the upper surface 511c of top 511a, Opening 543 is provided.Lighting apparatus 500 further includes the flexible base board 520, Mei Geju being made of multiple rectangular substrate parts 523 Shape substrate portion is attached to form a round connecting belt 524 at upper part, matches the top of radiator element 511 The outer diameter of 511a.Substrate 520 is arranged with the electrical lead (can't see in figure) being disposed in below insulating top layer.In each base At plate part 523, corresponding light source 121 be soldered to do not covered by insulating top layer connection pad (these connection pads at this In can't see, but can be in comparison diagram 4b the pad 124 for electrically connecting to light source).When manufacturing substrate 520, baseplate part Divide 523 advantageously can handle to obtain (in punching press, offer insulation by the rectangle part including substrate portion 523 and connecting belt 524 During layer, installation light source etc.).Later, the outer end of connecting belt 524 is combined together so that connecting belt forms a circle.This Outside, it is attached to connecting belt 524 for being connected to the power pack 522 of driver.
Substrate 520 is disposed in the top of radiator element 511 so that top 511a projects through connecting belt 524.Base Plate part 523 is spaced apart around radiator element, and due to their flexibility, they are suspended on connecting belt 524, base The side wall of the lower part 511b of this radiator cover element.Power pack 522 is arranged to enter radiator element via opening 543 In 511, and it is further attached to drive circuit (not shown).
In order to which substrate 520 is fixed to radiator element 511, clamp 530 is disposed in 520 top of substrate.Clamp 530 is Endless metal presss from both sides, and has and is adapted to be the multiple jaw portions 533 for being adapted to fit each substrate portion 523.Thus, in order to adapt to Corresponding substrate portion 523, jaw portion 533 is around connection 534 arranged for interval of top edge.It is recessed in each jaw portion 533 It falls into and is formed by two subassemblies being adjacently positioned 531 and 532.The recess is provided to clamp 530 with by the light source of substrate 520 121 are fixed in scheduled position.Top edge 534 is arranged with opening, and the internal diameter of the opening is adapted to allow for radiator element 511 top 511a highlights from opening.The shape of clamp 530 is adapted to be in distribution machinery power with fixed substrate part The lower part 511b that radiator is received while 523, sufficient heat is thus provided between substrate 520 and radiator element 511 and is connect It touches.
According to the embodiment of lighting apparatus, clamp device is arranged with electrically insulating material (such as plastics).
According to the embodiment of lighting apparatus, substrate be include for example with gap (having been not shown) by electricity separate two The conductive layer of subassembly.On the subassembly that light source anode is electrically attached in subassembly and light source cathode is electrically attached to separately On one subassembly.Substrate is directly located on radiator element, and is fixed on radiator element using plastic clamp.
According to the embodiment of lighting apparatus, as shown in Figure 6, light source is that LED encapsulates 621 here, is disposed in ceramics On radiator element 611, so that its hot weld disk (can't see in figure) is placed directly on ceramic surface.Electricity is arranged with to touch The plastic clamp 630 of point (can't see in figure) is arranged to by LED package arrangements in scheduled position, and is electrically connected LED Encapsulation.Alternatively, clamp can be made of an electrically conducting material and completely to provide electric contact.
Above description to clamp device (such as clamp) is only as an example, and it should be emphasized that other suitable Design is also available and is considered as falling within the scope of the inventive concept.
Continuing now with reference to figure 3, the embodiment of the method for the lighting apparatus for assembling concept according to the present invention is by more It describes in detail.This method is formed to realize the large-scale production of lighting apparatus.In order to be formed for according to the present invention Concept lighting apparatus mass substrate, be initially to provide copper foil (or copper foil) or other suitable metal foils.It is a roll of Copper foil 301 is fed into press machine 350, wherein for multiple substrates electrical lead pattern in each processing step by simultaneously Stamp out and (be stamped out step by step or continuously during advancing).Electrical lead pattern for each substrate is excellent Selection of land is designed as providing each individually required electrical connection of light source, and further, it would be desirable to provide sufficiently large copper face products to do Sufficiently low thermal resistance is provided between the good its corresponding radiator element of substrate.Referring to Fig. 4, the figure shows for substrate 120 ready-made electrical lead pattern, wherein as described above for being connected to the pad 122 of connector part 143, for being electrically connected To the pad 124 of light source and for providing the copper surface 120a for being thermally connected surface, 120b is shown.In Fig. 4, electrical lead figure Case is arranged to the connection of two LED encapsulation 121.Folding shaft x is instructed in figure, to illustrate the installation in light source 121 Later, ready-made substrate will be folded.
According to the embodiment of this method, and referring again to FIGS. 3, ready-made substrate has been preferably provided insulating layer.For Insulating layer of the manufacture for mass substrate provides a roll of glass fiber reinforced epoxy resin foil (FR4) here.It is used in Other standard materials in PCB are also used as insulating layer, such as PI and PA.
In fig 3b, a roll of insulation foil 302 is fed in press machine 351, wherein with the substrate that is stamped in copper foil 301 Number it is corresponding and be adapted to be multiple patterns on corresponding substrate and rushed simultaneously in each processing step It presses out and (is stamped out step by step or continuously during advancing).Pattern, which is adapted to be, to be covered the electricity of each substrate and draws Line pattern, preferably covers the entire upper surface other than following region of conductive layer 120, and the region is to be exclusively used in being electrically connected The region that the region and light source connect is attached thereon, referring to Fig. 4 b, wherein insulating layer 127 is attached to the layers of copper of Fig. 4 a, That is substrate 120.Insulating layer cover conductive layer 120 in addition to for connection pad 122 and 124 region and LED121 be mounted The whole surface other than region 126 thereon.
Continuing now with the copper foil 301 ' that with reference to figure 3c, is stamped and the insulation foil 302 ' being stamped be trimmed to about in place and it It is bonded together in bonder 352 afterwards, to form a roll of connected substrate 300.
Before separated substrate, the standard technique that light source is utilized for placing and installing light source is arranged in a roll of quilt On the upper surface of the substrate 300 of connection, the standard technique for example picks and places machine and reflow soldering (not shown).
Substrate is then separated and is prepared on the radiator element being fastened in lighting apparatus involucrum.Final substrate can To be rigid or flexible.Flexible base board is convenient for around radiator element foldable substrate to utilize the two of flat radiator element Side, to allow light source on the both sides of radiator element.Substrate is arranged on the downside of it towards radiator element, i.e., exposed Copper is deployed directly on radiator element.
According to the embodiment of this method, it is real using mechanical fastening device that conductive layer is fastened on the step on radiator element It is existing.
Fig. 7 a-b and Fig. 9 illustrate the embodiment of the lighting apparatus 100 of concept according to the present invention.In figure 7 a, it illuminates Equipment is to disassemble state diagram to show its critical piece, and Fig. 7 b show lighting apparatus with assembled state.Fig. 9 is assembly shape The simplification cross-sectional, top view of lighting apparatus shown in Fig. 7 b under state.
Lighting apparatus 100 includes the light source 121 for being arranged to generate light, and light source 121 is installed on two clamps 130. Light source 121 is, for example, the LED of random color.It should be noted that light source is can't see in Fig. 7 a-b, because they are installed down On one in clamp 130.In this embodiment, clamp 130 includes metal as conductive layer, such as at certain positions Grain or hardware, these metallic particles or hardware help to reduce between the top side of conductive layer and bottom side in those positions Thermal resistance.
The involucrum that clamp 130 and light source 121 are made of two bulb-shaped encapsulating components 110 is fenced.Two heat dissipations Device element 111 is arranged to from the outstanding part of the inner surface of encapsulating component 110.Each radiator element 111 is tabular , there is the in-profile 113 for the interior shape for meeting encapsulating component 110 and straight opposite outer edge 114.In the embodiment In, all holding thermally contacts encapsulating component 110 and radiator element 111 after lighting apparatus is assembled so that they can be with It is considered as a big radiator element.Each clamp in clamp 130 is secured to one in these radiator elements 111 On radiator element.By properly selecting the shape, elasticity and material of clamp 130, scheduled assigned mechanical force is answered To stationary clamp 130 and ensure there is sufficient thermal connection between clamp 130 and radiator element 111.
Lighting apparatus 110 includes the cap 140 for lighting apparatus to be connected to lamps and lanterns, such as screw socket pedestal.701 quilt of electric wire It is arranged as preferably being in electrical contact with light source 121 by being engaged on terminal face-up on light source 121, and passes through light source 121 are attached mechanically to clamp 130.Electric wire 701 is disposed through the corresponding recess carved in radiator element 111 702 so that each electric wire 701 is placed on that side for powering opposite to light source 121 with the electric wire of radiator element 111 701.
With reference to figure 9, radiator element 111 is separated fixed distance.Between radiator element, overlay region is defined Domain 901.After recess 702, electric wire 701 is conducted through overlapping region 901 and reaches cap 140.Thus, when 140 quilt of cap When being connected to power supply, electric wire 701 can provide electrical power to light source 121.
Lighting apparatus 100 can be assembled with two steps according to this embodiment.One step includes forming two half-unit, Each half portion is made of an encapsulating component 110 and a radiator element 111, the encapsulating component 110 and radiator element 111 are optionally molded into a common part of such as ceramic material.In each half portion in these half portions, clamp is arranged 130, light source 121 and electric wire 701.In second step, the two half portions are assembled together to form lighting apparatus 100, And cap 140 can also be attached.
Fig. 8 illustrates the embodiment of the lighting apparatus 100 of concept according to the present invention.Lighting apparatus is to disassemble state diagram To show its critical piece.Fig. 9 is the cross-sectional, top view of lighting apparatus shown in fig. 8, but is in the assembled condition.
Lighting apparatus 100 includes the light source 121 for being arranged to generate light, and light source 121 is installed on conductive layer 120, leads Electric layer 120 is for example included in metallic particles or hardware at certain positions, these metallic particles or hardware help are dropped Thermal resistance between the upper and lower sides of low conductive layer.Light source can be used as LED encapsulation to be arranged on conductive layer 120 or can be pacified On the bare die as conductive layer 120；When needing to have extraordinary heat conductivity on heat dissipation/conduction bed boundary, behind A kind of selection is preferred.In this case, the electric conductivity in this layer is not to force required feature.It should be noted that Light source is can't see in Fig. 8, because they are mounted on down on one in conductive layer 120.Light source 121 is, for example, arbitrary face The LED of color.The involucrum that light source 121 and conductive layer 120 are made of two encapsulating components 110 is fenced.Two radiator elements 111 It is arranged to from the outstanding part of the inner surface of encapsulating component 110.Each radiator element 111 is plate, has and meets Encapsulate the in-profile 113 of the interior shape of component 110 and straight opposite outer edge 114.In this embodiment, component is encapsulated 110 thermally contact all holdings after lighting apparatus is assembled with radiator element 111 so that they can be considered as one Big radiator element.
In each radiator element 111, it is provided with corresponding with the shape of a conductive layer in conductive layer 120 Shape recess 703.Conductive layer 120 is adhered on radiator element 111, and 703 helps that are thus recessed are aligned to be led accordingly Electric layer 120 and to also be aligned light source 121.When conductive layer 120 is received in their own recess 703, conductive layer 120 movement in its respective plane is limited.
Lighting apparatus 100 includes the cap 140 for lighting apparatus to be connected to lamps and lanterns (such as screw socket pedestal).From cap 140 The electric wire 701 of extension is attached to conductive layer 120 at one end, is more precisely in electrical contact with light source 121.Electric wire 701 is by cloth It is set to across the recess 702 carved in the edge of radiator element 111 so that each electric wire 701 is placed in radiator element On 111 that side for powering opposite to light source 121 with electric wire 701.
With reference to general Fig. 9 for Fig. 7 and Fig. 8, radiator element 111 is separated fixed distance.It is radiating Between device element 111, overlapping region 901 is defined.After recess 702, electric wire 701 is conducted through overlapping region 901 reach cap 140.Thus, when cap 140 is connected to power supply, electric wire 701 can provide electrical power to light source 121.
Lighting apparatus 100 can be assembled with two steps according to this embodiment.One step includes forming two half-unit, Each half portion is made of an encapsulating component 110 and a radiator element 111, the encapsulating component 110 and radiator element 111 are optionally molded into a common part of such as ceramic material.In each half portion in these half portions, it can arrange and lead Electric layer 120, light source 121 and electric wire 701.In second step, the two half portions are assembled together to form lighting apparatus 100, and cap 140 can also be attached.
Hereinbefore, it has been described that according to the lighting apparatus of the idea of the invention as defined in appended claims With the embodiment of method.These embodiments should be counted as only being non-limiting example.Those skilled in the art should manage Solution, in the range of idea of the invention, many modifications and substitutions embodiments are also possible.It is noted that for the mesh of the application , and specific to appended claims for, word " comprising " is not excluded for other element or steps, and word "one" It is not excluded for plural number.
1. a kind of lighting apparatus (100), including：
It is arranged to generate at least one light source (121) of light；
Be electrically insulated radiator element (111)；And
Conductive layer (120) flexible；
Wherein described at least one light source is arranged to be in contact with the conductive layer (120),
The wherein described conductive layer is installed to using mechanical fastening device on the radiator element,
The wherein described conductive layer is folded along the folding shaft around the radiator element；
The wherein described mechanical fastening device is included at least by the first subassembly and the second subassembly of recess separation, and the recess connects At least one light source for being contained between first subassembly and the second subassembly so that the light source by the machinery Clamp device is received, and when the mechanical fastening device is installed about the radiator element, the mechanical fastening device is realized Positioning of the light source in two dimensions on the radiator element.
2. lighting apparatus according to claim 1, wherein the clamp device is arranged to punish in scheduled position With mechanical force.
3. lighting apparatus according to claim 1, wherein the clamp device is clamp.
4. lighting apparatus according to claim 1, wherein the conductive layer is arranged with electrical lead, the electrical lead is by cloth It sets for at least one light source power supply.
5. lighting apparatus according to claim 1, wherein the conductive layer is flexible.
6. lighting apparatus according to claim 1 further includes the insulating layer being arranged at the conductive layer.
7. lighting apparatus according to claim 6, wherein the insulating layer is reflexive.
8. lighting apparatus according to claim 1, wherein the clamp device is reflexive.
9. lighting apparatus according to claim 1, wherein the conductive layer is disposed in the clamp device.
10. lighting apparatus according to claim 1 further includes the involucrum of the fenced light source and the radiator element (110)。
11. a kind of lighting apparatus, including：
Cap (140), for the lighting apparatus to be connected to lamps and lanterns；
It is arranged to generate at least one light source of light；
Electrical isolation radiator element with recess；And
Conductive layer flexible；
Wherein described at least one light source is arranged to be in contact with the conductive layer,
The wherein described conductive layer is installed to the radiator element by being bonded in the recess,
Wherein when the light source is installed on the radiator element, the bonding realizes the light source in the radiator The positioning in two dimensions on element；
At in the radiator element, the recess has corresponding with the shape of the conductive layer the wherein described concave shape Shape；And
The conductive layer is adhered to the radiator element in the recess by bonding；The recess alignment is led accordingly Electric layer and the light source, and when the conductive layer is received in respective recess, the conductive layer is in respective plane Interior movement is limited；
The linear arrangements of electric connection (701) of flexibility wherein extended from the cap (140) is attached to the conductive layer；And it is described Flexible threadiness arrangements of electric connection (701) is disposed through the recess (702) carved in the edge of the radiator element；
The wherein described radiator element includes two laps, and overlapping region (901) is defined between the two laps, And the flexible linear arrangements of electric connection (701) is being conducted through the overlapping region after the recess (702) (901) cap (140) is reached.
12. lighting apparatus according to claim 11, wherein each in the flexible wires shape arrangements of electric connection (701) Flexible threadiness arrangements of electric connection is placed in the light of the radiator element extended to the linear arrangements of electric connection of the flexibility On that opposite side of source.
13. a kind of method for providing lighting apparatus, including：
Conductive layer flexible is provided；
At least one light source is mounted on the upper surface of the conductive layer；
The conductive layer is folded along folding shaft；And
The conductive layer is fastened on electrical isolation radiator element, so that being arranged as dissipating with described on the downside of the conductive layer Hot device element is in direct contact,
It is wherein described that the conductive layer is fastened on the step on the radiator element using mechanical fastening device realization, wherein The conductive layer is folded in around the radiator element；
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