CN203892916U - Light source - Google Patents

Abstract

The utility model provides a light source capable of efficiently dissipating heat generated by a luminous module. The light source comprises an LED (light-emitting diode) module (20), a bearing table (30) used for placing the LED module (20), a driving circuit (40) used for enabling the LED module (20) to give out light, a frame body (60) used for forming the periphery and containing the driving circuit (40), a circuit retaining appliance (50) used for retaining the driving circuit (40), a lamp head (70) used for receiving electric power from the exterior, and a radiator (80) used for enabling the heat generated when the LED module gives out light to be radiated through the bearing table (30), wherein the bearing table (30) is provided with a second surface (31b) arranged at the side opposite to a first surface (31a) used for placing the LED module (20); the radiator (80) comprises a main body part (81) and a cooling fin part (82), wherein the main body part (81) is provided with a plane in contact with the second surface (31b) of the bearing table (30); the cooling fin part (82) is connected with the main body part (81) and extends in a way of being not in contact with the frame body (60) in the internal space of the frame body (60); the internal space of the frame body (60) is communicated with the bearing table (30) on the space.

Description

Light source

Technical field

The utility model relates to such as the light sources such as illumination light source that adopted light emitting diode (LED:Light Emitting Diode).

Background technology

The semiconductor light-emitting elements such as LED are small-sized owing to having, efficient and the life-span is long, therefore wait in expectation as the light source of various goods.Bulb-shaped LED lamp wherein (LED bulb) is known lamp-bulb type fluorescent lamp or the constantly studied exploitation of illumination light source (patent documentation 1) of incandescent lamp in the past as an alternative.

Bulb-shaped LED lamp for example possesses: there is the light emitting module of LED, cover light emitting module enclosed globe shade, put the supporting station of light emitting module, for making the luminous drive circuit of light emitting module, accommodating the peripheral framework of drive circuit and the lamp holder of accepting electric power from outside.

(prior art document)

(patent documentation)

Patent documentation 1 TOHKEMY 2006-313717 communique

LED, because luminous LED self can produce heat, reduces because this heat causes the temperature rising of LED and light output.For this reason, the structure of for example considering is, by the supporting station that supports light emitting module is contacted with peripheral framework, the heat producing at light emitting module (LED) to be dispelled the heat.

Yet, simple this structure only, the heat that can not produce light emitting module (LED) is fully dispelled the heat.

Utility model content

The utility model is in order to solve above-mentioned this problem, and object is to provide a kind of light source that can dispel the heat to the heat occurring at light emitting module efficiently.

In order to reach above-mentioned object, an embodiment of the light source that the utility model is related is to possess: light emitting module, supporting station, has put described light emitting module, drive circuit, for making described light emitting module luminous, framework, accommodates described drive circuit, and has peristome at two ends, retainer, is arranged on the peristome side of one end of described framework, and for keeping described drive circuit, lamp holder, is arranged on the peristome side of the other end of described framework, and for accepting electric power from outside, and radiator, the heat that described light emitting module is occurred when luminous, via described supporting station, dispel the heat, described supporting station has first surface and second, described first surface is the face that puts described light emitting module, described the second face is the face of a side contrary to described first surface, described radiator has main part and fin portions, described main part has described second plane contacting with described supporting station, described fin portions is connected with described main part, and extend to the inner space of described framework in the mode not contacting with described framework, the inner space of described framework is spatially communicated with described supporting station.

And, also can be, in an embodiment of the related light source of the utility model, described supporting station with seal described framework described one end peristome mode and be set up, the described main part of described radiator is configured between described supporting station and described retainer, and, with described retainer between there is the state in the gap being communicated with the inner space of described framework and be configured.

And, can be also, in an embodiment of the related light source of the utility model, at described retainer, be formed with to the side-prominent flank of described radiator one, the described main part of described radiator is pressed by described flank.

And, also can be, in an embodiment of the related light source of the utility model, described drive circuit has circuit substrate, this circuit substrate is configured to, axle almost parallel with the peristome of described one end from described framework towards the direction of the peristome of the described other end, the part on the limit of the front end of the bearing of trend of described fin portions, inclined with respect to the described plane of described main part.

And, also can be, in an embodiment of the related light source of the utility model, the interarea of one side of described circuit substrate is the face that is formed with the metal line of regulation shape, the part on the limit of the front end of the bearing of trend of described fin portions, tilts in the mode that the width of this fin portions narrows down gradually along with approaching the interarea of a described side.

And, can be also that, in an embodiment of the related light source of the utility model, described framework consists of resin.

By the utility model, can dispel the heat efficiently to the heat producing at light emitting module.

Accompanying drawing explanation

Fig. 1 is the side view of the related LED lamp of embodiment of the present utility model.

Fig. 2 is the exploded perspective view of the related LED lamp of embodiment of the present utility model.

Fig. 3 is the profile of the related LED lamp of embodiment of the present utility model.

Fig. 4 is the exploded perspective view of supporting station, radiator and circuit retainer in the related LED lamp of embodiment of the present utility model.

Fig. 5 is the oblique view that the formation of radiator, circuit retainer and drive circuit in the related LED lamp of embodiment of the present utility model is shown.

Fig. 6 (a) is the top view (enclosed globe shade, LED module and supporting station are not shown) of the related LED lamp of embodiment of the present utility model, and Fig. 6 (b) is the profile (enclosed globe shade is not shown) after the part of this LED lamp at A-A ' the line place of Fig. 6 (a) is cut off.

Fig. 7 is the summary section of the related lighting device of embodiment of the present utility model.

The specific embodiment

Referring to accompanying drawing, embodiment of the present utility model is described.And, below the embodiment that will illustrate be a preferred object lesson of the present utility model.Therefore, the allocation position of the shown numerical value of following embodiment, shape, material, inscape, inscape and connected mode etc. are an example, are not to limit purport of the present utility model.Therefore,, in the inscape of following embodiment, for being shown, the inscape do not recorded in the independent claims of upper concept of the present utility model illustrates as inscape arbitrarily.And each figure is ideograph, it is not rigorous diagram.

Below, an example as the light source in the utility model, describes illumination light source, in the following embodiments, as an example of illumination light source, bulb-shaped LED lamp (LED bulb) is described.

(LED lamp)

First, utilize Fig. 1 and Fig. 2 to describe all formations of the related LED lamp 1 of present embodiment.Fig. 1 is the side view of the related LED lamp of embodiment of the present utility model.And Fig. 2 is the exploded perspective view of the related LED lamp of embodiment of the present utility model.

As shown in Figure 1, the related LED lamp 1 of present embodiment is the bulb-shaped LED lamp that becomes the substitute of replacement bulb shape fluorescent lamp or incandescent lamp, by enclosed globe shade 10, framework 60 and lamp holder 70, forms peripheral device.

As shown in Figure 2, LED lamp 1 possesses: enclosed globe shade 10, LED module 20, loaded the supporting station 30 of LED module 20, for making the luminous drive circuit 40 of LED module 20 (LED22), radiator 80 for keeping the circuit retainer 50 of drive circuit 40, the framework 60 being configured to surround the mode of drive circuit 40, dispelling the heat for accept the lamp holder 70 of electric power, heat that LED module 20 is produced when luminous from outside.

Referring to Fig. 2 and utilize Fig. 3 to Fig. 5 to describe each component parts of LED lamp 1.Fig. 3 is the profile of the related LED lamp of embodiment of the present utility model.Fig. 4 is the exploded perspective view of supporting station, radiator and circuit retainer in this LED lamp.Fig. 5 is the oblique view that the formation of radiator, circuit retainer and drive circuit in this LED lamp is shown.

And in Fig. 3, the chain-dotted line of drawing along the above-below direction of paper represents the lamp axle J (central shaft) of LED lamp, in the present embodiment, lamp axle J is consistent with enclosed globe shade axle.And lamp axle J refers to, becomes the axle of pivot when LED lamp 1 being installed to the lamp socket of lighting device (not shown), consistent with the rotating shaft of lamp holder 70.

[enclosed globe shade]

As shown in Figure 3, enclosed globe shade 10 is the diffusers that cover LED module 20, is constituted as and the light of emitting from LED module 20 can be fetched into the outside of lamp.Therefore, incide the light transmission enclosed globe shade 10 of LED module 20 of the inner surface of enclosed globe shade 10, be fetched to the outside of enclosed globe shade 10.

Enclosed globe shade 10 is the rotary bodies with the hollow of peristome 11, is constituted as in the present embodiment slightly hemispherical that peristome 11 dwindles.As shown in Figure 3, the peristome 11 and supporting station 30 butts of enclosed globe shade 10.Peristome 11, supporting station 30, framework 60 these tripartites are fixed by the stickers such as silicones (not shown).

Enclosed globe shade 10 can be for transparent, so that can be visual to inner LED module 20, and can not be also transparent, but make enclosed globe shade 10 there is light diffusion function.In the situation that making enclosed globe shade 10 there is light diffusion function, such as the resin that contains the photodiffusion materials such as silica or calcium carbonate or Chinese white etc. are filled to inner surface or the outer surface of enclosed globe shade 10, thereby form milky optical diffusion film.

Material as enclosed globe shade 10 can adopt the glass materials such as fused silica, or the resin material such as acrylic resin (PMMA), polycarbonate (PC) etc.And, as the shape of enclosed globe shade 10, also can adopt the shape identical with incandescent lamp.

[LED module]

LED module 20 is the light emitting modules with light-emitting component, emits the light that white waits the color (wavelength) of regulation.As shown in Figure 3, LED module 20 is loaded in supporting station 30, luminous by the electric power of supplying with from drive circuit 40.

As shown in FIG. 2 and 3, the LED22 that LED module 20 possesses substrate 21 and is installed in substrate 21.The formation of the LED module 20 in present embodiment is for adopting SMD (Surface Mount Device: the surface mount) LED22 of type.

Substrate 21 is for the installation base plate of LED22 is installed.The substrate that substrate 21 is the end such as the ceramic substrate, resin substrate or the metal that are the pottery formations such as aluminium oxide, can adopt the tabular substrate with regulation shape.And as the shape of substrate 21, can adopt flat shape is essentially rectangular or circular substrate.

Take the mode contacting as face with the surface of supporting station 30 and be installed to supporting station 30 in the back side of substrate 21.As shown in Figure 2, on two surperficial positions of substrate 21, be formed with the electrode terminal 23 as power supply.

And, although do not illustrate, in each of electrode terminal 23, be welded with the lead-in wire of deriving from drive circuit 40.And, at the picture on surface of substrate 21, be formed with the metal line for electrode terminal 23 is electrically connected to a plurality of LED22.

A plurality of LED22 are installed on the surface of substrate 21.Each LED22 is an example of semiconductor light-emitting elements, luminous by the electric power of stipulating.LED22 in present embodiment is the light-emitting component of SMD type, for example, possess: have recess resinous container, be installed on LED chip in recess, be sealing into the seal member (containing fluorophor resin) in recess.

As LED chip, for example can adopt the blue led chip that sends blue light when switching on.In this case, as seal member, can adopt the silicones of the yellow fluorophor particle that contains YAG system.Accordingly, the yellow fluorophor particle that a part for the blue light that LED chip sends contains in seal member is sodium yellow by wavelength conversion, the blue light not absorbed by yellow fluorophor particle is with by yellow fluorophor particle, the sodium yellow after by wavelength conversion mixes, thereby becomes white light and penetrated.And, the hemispheric lens that can cover seal member also can be set.

[supporting station]

Supporting station 30 (module board) is for supporting the support unit of LED module 20, as shown in Figure 3, in supporting station 30 mountings, has LED module 20.And supporting station 30 is configured in the mode of the first peristome 60a of obstruction framework 60.That is, the first peristome 60a of framework 60 is spatially sealed by supporting station 30.

As shown in Figure 3 and 4, supporting station 30 has the flat part 31 of mounting LED module 20 and is straightened the side wall portion 32 that is arranged at this flat part 31.Supporting station 30 in present embodiment is to take flat part 31 as bottom, and the lid shape parts that the side wall portion 32 of take is surrounding wall portion are constituted as and cover circuit retainer 50.

As shown in Figure 3, flat part 31 (planar portions) has: as mounting, have the first surface 31a of face (face of enclosed globe shade one side) of LED module 20 and second 31b of the face (face of lamp holder one side) of a conduct side contrary to first surface 31a.Radiator 80 contacts with second 31b.

In the present embodiment, flat part 31 is discoideus, first surface 31a and second 31b and lamp axle J quadrature.And first surface 31a and second 31b be not only to have the plane of recess to form.Accordingly, can easily to supporting station 30, process, therefore can originally make supporting station 30 with lower one-tenth.

And, as shown in Figure 4, at flat part 31, the first through hole 33a and the second through hole 33b, be provided with respectively two.The module substrate maintaining part 56 break-through first through hole 33a of circuit retainer 50.And, the module substrate limiting unit 57 of circuit retainer 50 and lead-in wire break-through the second through hole 33b deriving from drive circuit 40.

Side wall portion 32 is to be arranged on flat part 31 around from flat part 31 to the side-prominent mode of drive circuit one.Side wall portion 32 in present embodiment is constituted as whole perisporium and has step, therefore has the little 32a of portion in footpath and the large large 32b of portion in footpath of diameter that diameter is little.That is, the poor step that forms side wall portion 32 of the diameter of the little 32a of portion in footpath and the large 32b of portion in footpath.As shown in Figure 3, peristome 11 butts of the table top portion of side wall portion 32 (upper surface of the large 32b of portion in footpath) and enclosed globe shade 10.Accordingly, the peristome 11 of enclosed globe shade 10 is stopped up by supporting station 30.

The large 32b of portion in footpath is the part being connected with the first peristome 60a of framework 60.Inner peripheral surface by the outer peripheral face of the large 32b of portion in footpath and the first peristome 60a of framework 60 joins, thereby supporting station 30 is connected with framework 60.Accordingly, the heat energy that is transmitted to the LED module 20 of supporting station 30 is enough directly transferred to framework 60.And by the outer peripheral face of the large 32b of portion in footpath is contacted with the inner peripheral surface of framework 60, thereby the first peristome 60a of framework 60 is stopped up by supporting station 30.

Like this, supporting station 30 also can play a role as the thermal component (radiator) of the heat heat radiation that is used for making LED module 20 (LED22) to produce.And in order to carry out efficiently heat conduction, supporting station 30 preferably consists of metal material or the high resin material of pyroconductivity, the main component of described metal material is such as being aluminium (Al), copper (Cu) or iron (Fe) etc.In the present embodiment, supporting station 30 consists of aluminium.

The supporting station 30 with above-mentioned this formation by make the end of the peristome of the large 32b of portion in footpath be connected to framework 60 protuberance 61 above, thereby position determined, and be fixed on framework 60.

[drive circuit]

Drive circuit (circuit unit) the 40th, for making the lamp circuit of LED module 20 (LED22) luminous (lighting a lamp), is supplied to LED module 20 by the electric power of regulation.Drive circuit 40 in present embodiment is power circuits, for example, by supplying with from lamp holder 70 alternating current coming, be converted to direct current, and this direct current is fed into LED module 20.

As shown in Figure 3, drive circuit 40 forms by circuit substrate 41 and for a plurality of components (not shown) of driving LED module.

Circuit substrate 41 is that an interarea (solder side) is by the printed circuit board (PCB) (PCB substrate) of the metal wiring patterns such as Copper Foil.Component is installed in the face (components and parts face) with the contrary side of solder side of circuit substrate 41.A plurality of components that are installed in circuit substrate 41 are electrically connected to each other by metal line.And, at circuit substrate 41, be formed with the through hole that a plurality of lead-in wires for component (pin) insert.

In the present embodiment, circuit substrate 41 roughly becomes parallel state with the interarea of this circuit substrate 41 and lamp axle J (axle from the first peristome 60a of framework 60 towards the direction of the second peristome 60b) and is installed in circuit retainer 50.That is, circuit substrate 41 longitudinally configures at the interior quilt of framework 60, with the substantially vertical state of the interarea of the interarea of this circuit substrate 41 and the flat part 51 of circuit retainer 50, is maintained at circuit retainer 50.

Circuit substrate 41 is constituted as, even longitudinally configuration also can have larger erection space, thereby broadens gradually towards the width of the first peristome 60a from the second peristome 60b of framework 60.And, at the edge of circuit substrate 41, be formed with protuberance (stage portion) 41a.It is step-like and to the outstanding part of transverse direction that protuberance 41a is that the outline line when the interarea of circuit substrate 41 is considered as to a plane becomes, and protuberance 41a is relatively formed on the both sides of the transverse direction of circuit substrate 41.At circuit substrate 41, be maintained in circuit retainer 50, protuberance 41a is locked the locking pawl 54a of the circuit substrate maintaining part 54 in circuit retainer 50.

Component (circuit block) is such as being the semiconductor elements such as the capacity cells such as electrolytic capacitor or ceramic capacitor, resistor constant resistance element, convertor circuit element, coil part, choking-winding (choke transformer), noise filter, diode or integrated circuit component etc.Component is installed in the interarea of a side of circuit substrate 41 mostly.

Drive circuit 40 is electrically connected to by pair of lead wires (outlet side lead-in wire) with LED module 20.And drive circuit 40 is electrically connected to by pair of lead wires (input side lead-in wire) with lamp holder 70.These four lead-in wires are for example alloyed copper lead-in wires, and the heart yearn consisting of alloyed copper forms with the resin coating of the insulating properties of coated this heart yearn.As an example, four lead-in wires are polyvinyl chloride wire.

Outlet side lead-in wire is for by the electric power that LED module 20 is lit a lamp, and is supplied to the electric wire of LED module from drive circuit 40, and break-through is arranged on the second through hole 33b of supporting station 30, and is drawn out to LED module side (in enclosed globe shade 10).And weld with the metal line of circuit substrate 41 with the electrode terminal of the substrate 21 of LED module 20 23 welding, the other end (heart yearn) one end (heart yearn) of outlet side lead-in wire.

And input side lead-in wire is for by the electric power that LED module 20 is lit a lamp, and is supplied to the electric wire of drive circuit 40 from lamp holder 70.One end (heart yearn) of input side lead-in wire is electrically connected to lamp holder 70, and the other end (heart yearn) is waited and is electrically connected to by welding with the electric power input part (metal line) of circuit substrate 41.

[circuit retainer]

As shown in FIG. 2 and 3, circuit retainer 50 is for keeping the holding member of drive circuit 40, is arranged on the first peristome 60a mono-side of framework 60.Circuit retainer 50 is fixed on framework 60.

Circuit retainer 50 in present embodiment consists of the insulating element (insulating lid parts) of lid shape, as shown in Figure 3 and 4, possess: be configured in flat part 51 between supporting station 30 and radiator 80 and drive circuit 40, be straightened the side wall portion 52 of flat part 51 and the incised notch portion 53 arranging in the side of flat part 51 of being arranged on.There is the circuit retainer 50 of this formation such as adopting the insulative resin materials such as polybutylene terephthalate (PBT) etc., by resin forming by integrally formed.

Flat part 51 (planar portions) is tabular, using with the plane of lamp axle J quadrature as interarea.As shown in Figure 3, the flat part 51 of circuit retainer 50 and the flat part 31 of supporting station 30 or radiator 80 with separate regulation interval mode and by relative, configured.

As shown in Figure 3, side wall portion 52 is configured to, side-prominent to drive circuit one from the edge of flat part 51.In the present embodiment, as relative pair of sidewalls portion 52, be configured.Circuit retainer 50 by make the end of the drive circuit side of side wall portion 52 be connected to framework 60 protuberance 61 above, thereby position is determined.Outer peripheral face at side wall portion 52 is provided with the claw 52a locking at the fastener 62 of framework 60.

And the side wall portion 52 in present embodiment is constituted as at outer peripheral face has step, thereby there is the little portion in footpath and the large large portion in footpath of diameter that diameter is little.As shown in Figure 3, the step part that the side wall portion 32 in the side wall portion in circuit retainer 50 52 and supporting station 30 is configured to is separately combined.Accordingly, can Circuit tuning retainer 50 with the position of supporting station 30, thereby the gap between circuit retainer 50 and supporting station 30 can be set.

Incised notch portion 53 is in order to make supporting station 30 spatially be communicated with and be set up with the inner space of framework 60.; by incised notch portion 53 is set, thereby can make gap (space) between circuit retainer 50 (flat part 51) and supporting station 30 (flat part 31), start to be spatially communicated with towards the inner space of drive circuit one side (area of space) with the circuit retainer 50 from framework 60.Incised notch portion 53 is regions that a part for regulation shape is cut off, and is by the part that comprises surrounding wall portion having in the lid shape parts of round-ended cylinder shape, two regions after cutting away relatively symmetrically in the present embodiment.That is, in the present embodiment, incised notch portion 53 does not form the part of side wall portion 52 in a week of flat part 51, and is arranged on two relative positions.

According to such formation, the heat of LED module 20 that is transmitted to supporting station 30 by convection current by conduction to the inner space in framework 60, thereby the heat can efficiency well LED module 20 being produced is dispelled the heat.

As shown in Figure 3, at flat part 51, be provided with for a pair of circuit substrate maintaining part 54 of holding circuit substrate 41 and a pair of circuit substrate limiting unit 55 that limits for the movement in the vertical direction at its interarea to maintained circuit substrate 41.

A pair of circuit substrate maintaining part 54 respectively, and the protuberance that arrange side-prominent to drive circuit from the interarea of drive circuit one side of flat part 51 for example.A pair of circuit substrate maintaining part 54 is constituted as, and from the horizontal direction of the interarea of circuit substrate 41, clamps the side of this circuit substrate 41.And, at the front end separately of a pair of circuit substrate maintaining part 54, be formed locking pawl 54a, lock pawl 54a and be constituted as the protuberance 41a locking at circuit substrate 41.

A pair of circuit substrate limiting unit 55 respectively, the protuberance for example out arranging to drive circuit pleurapophysis from the interarea of drive circuit one side of flat part 51.A pair of circuit substrate limiting unit 55 is constituted as, and the vertical direction from the interarea of this circuit substrate 41, clamps this circuit substrate 41.Accordingly, can the activity of limiting circuit substrate 41 in the vertical direction of its interarea, therefore can suppress to be maintained at any slip of the circuit substrate 41 of circuit retainer 50.

And, as shown in Figure 3 and 4, at flat part 51, be provided with for keeping two module substrate maintaining parts 56 of LED module 20 (substrate 21) and for limiting movable two the module substrate limiting units 57 of LED module (substrate 21) in its horizontal direction.Like this, circuit retainer 50 not only can holding circuit substrate 41, and can be as for keeping the holding member of substrate 21 to bring into play function.

Module substrate maintaining part 56 is configured to respectively from flat part 51 side-prominent to enclosed globe shade at the interarea of enclosed globe shade one side, in module substrate maintaining part 56, is formed with respectively for locking the locking pawl 56a on a limit of substrate 21.Particularly, two module substrate maintaining parts 56 are configured to clip two relative limits of substrate 21.And, lock pawl 56a and be constituted as, be connected to the end surface on a limit of substrate 21.The surface of substrate 21 is by pressing by locking pawl 56a, thereby substrate 21 is maintained at supporting station 30.

And, module substrate limiting unit 57 is configured to respectively, side-prominent to enclosed globe shade at the interarea of enclosed globe shade one side from flat part 51, in module substrate limiting unit 57, is formed with respectively, when substrate 21 is loaded in supporting station 30, with the planar portions 57a of the side butt of substrate 21.Particularly, two module substrate limiting units 57 are configured to clip two limits of relative other of substrate 21.Side by substrate 21 is clamped by two planar portions 57a, thereby can prevent that substrate 21 from random sliding.

And, in module substrate limiting unit 57, be provided with respectively reach through hole, for by the lead-in wire that drive circuit 40 is connected with LED module 20 (outlet side lead-in wire), from drive circuit one side of circuit retainer 50, be drawn out to enclosed globe shade one side.Article two, the reach through hole of the outlet side of the side in outlet side lead-in wire lead-in wire break-through one side's module substrate limiting unit 57, the reach through hole of outlet side lead-in wire break-through the opposing party's of the opposing party module substrate limiting unit 57.

And, in module substrate limiting unit 57, being provided with respectively two gap 57b, these two gap 57b are as lead-in wire limiting unit, and break-through patchhole the activity that is drawn out to the outlet side lead-in wire of enclosed globe shade one side are limited.Like this, the module substrate limiting unit 57 in present embodiment not only can prevent any slip of substrate 21, but also has the function that keeps outlet side lead-in wire.

Gap 57b is formed groove shape, and is configured can clamp the mode of the lead-in wire that drive circuit 40 is connected with LED module 20.Gap 57b is constituted as, and its groove width is only slightly more a little bit smaller than the live width of lead-in wire.Accordingly, by outlet side lead-in wire is pushed in the 57b of gap, thereby outlet side lead-in wire can be fixed to gap 57b.Therefore, can easily to outlet side lead-in wire, weld with electrode terminal 23.And, by the activity of restriction outlet side lead-in wire, thereby can reduce significantly the mechanical load in the welding portion of outlet side lead-in wire and electrode terminal 23, therefore can prevent that the broken string between outlet side lead-in wire and electrode terminal 23 is bad.

And, as shown in Figure 4, on the interarea of enclosed globe shade one side of flat part 51, be provided with to the outstanding flank of heat sink side (jut) 58.Flank 58 in present embodiment is arranged on the bottom of module substrate limiting unit 57.Radiator 80 is loaded above flank 58.Like this, radiator 80 can with and flat part 51 between stay gapped state and be connected circuit retainer 50.

In the situation that LED module 20 being remained fixed in to supporting station 30, substrate 21 is loaded to the first surface 31a in supporting station 30, radiator 80 is loaded in the state of circuit retainer 50, locking pawl 56a is hung over to the surface on a limit of substrate 21, and make module substrate maintaining part 56 connect the first through hole 33a of supporting station 30, make other limit butt of planar portions 57a and substrate 21 simultaneously, and make module substrate limiting unit 57 connect the second through hole 33b of supporting stations 30.Accordingly, substrate 21 is pressed against supporting station 30 by locking pawl 56a, thereby is held to be fixed on supporting station 30.And because the side on a limit and the planar portions 57a of module substrate limiting unit 57 of substrate 21 connects, so substrate 21 is limited by module substrate limiting unit 57 in the activity of its interarea horizontal direction.

[framework]

As shown in Figure 3, framework 60 is configured to surround the mode of drive circuit 40, supporting station 30 and circuit retainer 50, has the area of space (inner space) of regulation in the inside of framework 60.Framework 60 in present embodiment is to form peripheral peripheral framework, and the outside of framework 60 is exposed to the outside of lamp.And, as shown in Figure 2, in framework 60, be set up protuberance 61 and fastener 62.

Framework 60 is formed with peristome at the axial two ends of lamp axle J, and the formation of framework 60 is to comprise: as the first peristome 60a of the peristome of enclosed globe shade side, as the second peristome 60b, the main part 60c between the first peristome 60a and the second peristome 60b of the peristome of lamp holder side.Framework 60 is to take the rotary body of the funnel-form (horn-like) that lamp axle J is axle, and it is large to be constituted as the opening of aperture efficiency the second peristome 60b of the first peristome 60a.

The first peristome 60a consists of the parts cylindraceous that are roughly with certain internal diameter and external diameter.As shown in Figure 3, the first peristome 60a is and the coupling part of the side wall portion 32 of supporting station 30 that particularly, the inner peripheral surface of the first peristome 60a is that face contacts with face with the outer peripheral face of side wall portion 32 (the large 32b of portion in footpath).Accordingly, the heat energy producing at LED module 20 is enough transmitted to framework 60 expeditiously via supporting station 30.

And, with the first peristome 60a, by the mode of supporting station 30 occlusion of openings, be configured.That is, supporting station 30 covers the first peristome 60a of framework 60, seals the first peristome 60a.

The second peristome 60b consists of the parts that are roughly cylinder, as shown in Figure 3, and Recessed light head 70 outside the second peristome 60b.Accordingly, the second peristome 60b of framework 60 is stopped up by lamp holder 70.

Main part 60c by from the first peristome 60a mono-side towards the second peristome 60b mono-side and the parts cylindraceous that are roughly that its internal diameter and external diameter gradually change form.Inner surface at main part 60c has been set up three protuberances 61 and two fasteners 62.

With the inner surface from main part 60c, to inner space, outstanding mode is formed rib shape to protuberance 61.And protuberance 61 is formed step-like, there are two the different planes towards the first peristome 60a mono-side.As shown in Figure 3, the peristome ora terminalis of plane of protuberance 61 and the side wall portion 32 (the large 32b of portion in footpath) of supporting station 30 connects, and the ora terminalis of another plane of protuberance 61 and the side wall portion 52 of circuit retainer 50 connects.Accordingly, can determine the position of supporting station 30 and circuit retainer 50 and framework 60.

Fastener 62 is configured in the mode of the claw 52a of locking circuit retainer 50.By making circuit retainer 50 rotation, and the fastener 62 that makes the claw 52a of circuit retainer 50 hang over framework 60 blocks, thereby circuit retainer 50 is fixed to framework 60.

The framework 60 with above this formation is such as adopting the insulative resin materials such as PBT etc., by resin forming by integrally formed.

[lamp holder]

Lamp holder 70 is power receiving sections, from the outside of lamp, accepts to be used for making the luminous electric power of LED module 20 (LED22).Lamp holder 70 is for example installed in the lamp socket of ligthing paraphernalia.Accordingly, lamp holder 70, when LED lamp 1 is lit a lamp, can be accepted electric power from the lamp socket of ligthing paraphernalia.Lamp holder 70 in present embodiment is accepted alternating current (for example commercial alternating current).The alternating current of accepting at lamp holder 70 is imported into the electric power input part of drive circuit 40 via a pair of input side lead-in wire.

As shown in Figure 3, lamp holder 70 is installed in the second peristome 60b of framework 60.Lamp holder 70 is the metal lid shape parts that have round-ended cylinder shape, is the lamp holder of plug-in type (bayonet type) in the present embodiment.And the kind of lamp holder 70 does not have special restriction, also can adopt the lamp holder of screw-type (Edison screw type).

[radiator]

Radiator 80 is to make the LED module heat that (in lighting a lamp) occurs in luminous, the thermal component dispelling the heat via supporting station 30.Therefore, radiator 80 preferably consists of the high material of pyroconductivity, such as adopting the metal materials such as aluminium to form.Radiator 80 in present embodiment adopts aluminium plate etc., processes to be configured as the shape of regulation by carrying out the metals such as metal cutting processing or bending process.By adopting radiator 80, thereby can efficiency to being transmitted to the heat of the LED module 20 of supporting station 30, dispel the heat well.

As shown in Figure 4, radiator 80 consists of main part 81 and the pair of radiating fan portion 82 that is connected with main part 81.Particularly, radiator 80 consists of roughly rectangular tabular main part 81 and the tabular fin portions 82 that is wing that is separately positioned on the two ends of main part 81.In the present embodiment, main part 81 and pair of radiating fan portion 82 are by forming being processed to two position 90-degree bents of metallic plate of the shape of regulation, and the cross sectional shape of radiator 80 is Japanese katakana printed words.

Main part 81 is the tabular metallic plates that have with the first surface 81a of second 31b contact of flat part 31 in supporting station 30 and second 81b of the face of a side contrary to first surface 81a, is configured between supporting station 30 and circuit retainer 50.In the present embodiment, the mode that second 31b in supporting station 30 contacts with face with face with first surface 81a in radiator 80 is close to.

And main part 81 loads in the flank 58 that is formed on the flat part 51 of circuit retainer 50, second 81b of main part 81 contacts above with flank 58.Main part 81 is seized on both sides by the arms by supporting station 30 and flank 58.In the present embodiment, radiator 80 is pressed against flank 58 by main part 81 and is maintained in framework 60.Like this, radiator 80 is configured by flank 58 with circuit retainer 50, therefore, between radiator 80 (main part 81) and circuit retainer 50 (flat part 51), formed the gap (area of space) being communicated with the inner space of framework 60.

And, as shown in FIG. 4 and 5, at main part 81, be formed with a pair of incised notch 81c of portion for a pair of module substrate limiting unit 57 of circuit retainer 50 is passed.That is,, when can avoiding the conflicting of radiator 80 and module substrate limiting unit 57, can also make as much as possible the area of main part 81 increase.Accordingly, owing to can making main part 81 and the contact area of supporting station 30 increase, therefore can make radiator 80 and the thermal resistance of supporting station 30 reduce.The heat that therefore, can expeditiously LED module 20 be occurred is transmitted to radiator 80 from supporting station 30.

As shown in Figure 4, pair of radiating fan portion 82 extends upward and forms at the interarea Vertical Square of second 81b with main part 81.In the present embodiment, pair of radiating fan portion 82 is in the relative mode of a pair of incised notch portion 53 with circuit retainer 50 and be formed.That is, pair of radiating fan portion 82 is formed the area of space extending between the incised notch portion 53 of circuit retainer 50 and the side wall portion 32 of supporting station 30.Each fin portions 82 preferably extends to the low-temperature region of the inner space of framework 60.And as described later, pair of radiating fan portion 82 extends in the mode not contacting with framework 60 and circuit retainer 50 in the inner space of framework 60.

Each fin portions 82 is tabular metallic plate, and the part on the limit of the front end of the bearing of trend of this fin portions is inclined with respect to the first surface 81a (or second 81b) of main part 81.That is, fin portions 82 becomes the shape being sheared at tilted direction.

As shown in Figure 5, in the present embodiment, in fin portions 82, formed inclined side 82a.Inclined side 82a is the part on limit of front end of the bearing of trend of this fin portions 82, in the mode that the width of this fin portions 82 narrows down gradually along with approaching the solder side of circuit substrate 41, tilts.

And in the present embodiment, it is plane that each fin portions 82 extends straight.Accordingly, can in framework 60, successfully produce thermal convection current.But, fin portions 82 also can bend to form by one or many.Accordingly, can in the inner space of limited framework 60, make as much as possible the area of fin portions 82 increase, thereby can improve radiating effect.

[characteristic of present embodiment forms]

Then, utilize Fig. 6 that the characteristic of the related LED lamp 1 of present embodiment is formed and described.Fig. 6 (a) is the top view (enclosed globe shade, LED module and supporting station are not shown) of the related LED lamp of embodiment of the present utility model, and Fig. 6 (b) is the profile (enclosed globe shade is not shown) that the part of this LED lamp at A-A ' the line place of Fig. 6 (a) is cut off.

As shown in Fig. 6 (b), be provided with in the present embodiment radiator 80, this radiator 80 has the main part 81 contacting for face with supporting station 30 and the fin portions 82 being connected with this main part 81, and fin portions 82 is extended the inner space that is arranged on framework 60.

Accordingly, via supporting station 30, be transmitted to the heat that the LED module 20 (LED22) of the main part 81 of radiator 80 occurs, can be transmitted to the inner space framework 60 from fin portions 82.

And in the present embodiment, supporting station 30 is spatially communicated with the inner space (interior zone) of framework 60.Particularly, the neighboring area of second 31b in supporting station 30 (Fig. 3 with reference to) (neighboring area of the part of exposing from the main part 81 of radiator 80) is spatially communicated with the inner space of framework 60.Accordingly, the heat that is transmitted to the LED module 20 (LED22) of supporting station 30 can, not via radiator 80, just can be transmitted to the inner space in framework 60 from supporting station 30.

Like this, from radiator 80 (fin portions 82) and supporting station 30, be transmitted to the heat of the inner space of framework 60, the thermal convection current of the air forming by the inner space in framework 60, thereby, from the high-temperature area of the LED module side in framework 60, move to the low-temperature region of lamp holder side, and then be transmitted to framework 60 and lamp holder 70, and rejected heat to the outside of lamp.

In sum, owing to can efficiency well heat being occurred when lighting a lamp LED module 20 (LED22) to, dispel the heat, therefore can suppress the excessive rising of the temperature of LED22.Like this, that can suppress that excessive rising because of the temperature of LED22 causes is deteriorated, thereby the life-span that can suppress LED22 shortens.Therefore the life-span that, can suppress LED lamp 1 reduces.

And in the present embodiment, fin portions 82 is extended in the mode not contacting with framework 60, the front end of bearing of trend is state freely with respect to framework 60.The radiating effect that accordingly, can prevent radiator 80 reduces.

That is,, if fin portions 82 contacts with framework 60, can apply certain stress to radiator 80.Like this, will cause radiator 80 (main part 81) and the adhesion of supporting station 30 to reduce, thereby the thermal resistance between radiator 80 and supporting station 30 increase.Therefore the heat that, is transmitted to the LED module 20 of supporting station 30 is just difficult to be transmitted to radiator 80.

To this, by fin portions 82 is extended in the mode not contacting with framework 60, so just can prevent from 60 pairs of radiator 80 stress applications of framework, as previously discussed, can prevent the reduction of the adhesion of radiator 80 (main part 81) and supporting station 30.Accordingly, can prevent the reduction of the radiating effect of the radiator 80 that causes with contacting of framework 60 because of fin portions 82.

And, as previously discussed, the formation that fin portions 82 is extended in the inner space of framework 60 by employing, thus the configuration of fin portions 82 can be formed to the inner space that is effectively applied to framework 60.Accordingly, the maximization of framework 60 can be avoided, thereby the light source of small-sized replace incandescent can be realized.

And in the present embodiment, supporting station 30 is to be connected with forming the mode that peripheral framework 60 contacts.Accordingly, the heat that is transmitted to the LED module 20 (LED22) of supporting station 30 is transmitted to framework 60 and rejects heat to the outside of lamp from supporting station 30.

Like this, in the present embodiment, the heat producing when LED module 20 (LED22) is lit a lamp, can be transmitted to from supporting station 30 and radiator 80 (fin portions 82) inner space of framework 60, and by thermal convection current, not only can reject heat to from framework 60 outside of lamp, and can be directly transferred to framework 60 and be rejected heat to the outside of lamp from supporting station 30.Therefore, can further improve radiating effect.

And, as shown in Fig. 6 (b), formation is in the present embodiment, supporting station 30 is configured to seal the first peristome 60a of framework 60, and, the main part 81 of radiator 80 is configured between supporting station 30 and retainer 50, and with retainer 50 between there is the gap (area of space) be communicated with the inner space of framework 60.

Particularly, the main part 81 of radiator 80 be take the state that contacts as face with the flat part 31 of supporting station 30 and being configured with the mode that the flat part 51 of circuit retainer 50 separates the interval of regulation, between the main part 81 of radiator 80 and the flat part 51 of circuit retainer 50, has gap (space).And this gap is spatially communicated with the inner space of framework 60.

In the present embodiment, by the incised notch portion 53 of circuit retainer 50, radiator 80 is spatially connected with the inner space in framework 60 with the gap between retainer 50.; as shown in Fig. 6 (a); by to there being a part for the lid shape parts of round-ended cylinder shape to cut to arrange incised notch portion 53; thereby as shown in Fig. 6 (b); between the inner face of side wall portion 32 and the sidepiece of circuit retainer 50 (incised notch portion 53) of supporting station 30 that covers shape, form the gas flow path that above-mentioned gap is spatially communicated with the inner space of framework 60.More specifically, in the situation that cut (incised notch portion 53 is set) before above-mentioned lid shape parts, the mode that these lid shape parts are all close to whole side wall portion with supporting station 30 contacts, when being provided with at these lid shape parts in incised notch portion 53, thereby can form above-mentioned gas flow path.

Like this, by the gap between radiator 80 and retainer 50 and the inner space of framework 60, be spatially communicated with, the heat that emits to the inner space of framework 60 from fin portions 82 is being transmitted to by convection current in framework 60 and lamp holder 70, can make the thermal convection current in the inner space of framework 60 become larger.Accordingly, be transmitted to the heat of the LED module 20 of radiator 80, owing to can be more successfully moving to the low-temperature region of lamp holder side from the high-temperature area of the LED module side in framework 60, therefore can more effectively to the heat of LED module 20, dispel the heat.Consequently, can further suppress the excessive rising of the temperature of LED22.

And, by incised notch portion 53 is set in many places, thereby can easily carry out air circulation between the gap between radiator 80 (or supporting station 30) and retainer 50 and the interior zone in framework 60.Accordingly, owing to also can easily producing thermal convection current in the framework 60 being closed, the heat that therefore can occur LED module 20 is expeditiously dispelled the heat.

And in the present embodiment, the main part 81 of radiator 80 is pressed against flank 58.

By this, form, need not use in addition the fixed parts such as screw or sticker, just radiator 80 can be remained fixed in at least one party of supporting station 30 and circuit retainer 50.Accordingly, can realize cost degradation and can easily assemble.

And, in the present embodiment, the part on the limit of the front end of the bearing of trend of fin portions 82, inclined with respect to the first surface 81a (or second 81b) of main part 81.

This, consist of, charging part or the component (electronic unit) that can avoid in the solder side of the fin portions 82 of metallic plate and the circuit substrate 41 of drive circuit 40 contact.Like this, between the charging part in fin portions 82 and solder side or component (electronic unit), can guarantee certain insulation distance.Therefore, can reduce the breakage etc. of the component of the drive circuit 40 causing because of defective insulation.

For example, by the part on the limit of the front end of the bearing of trend of fin portions 82 is formed, the mode that the width of this fin portions 82 narrows down gradually to approach the solder side of circuit substrate 41 tilts, thereby can guarantee the insulation distance between fin portions 82 and metal pattern and welding.

And in the present embodiment, framework 60 is formed from a resin.When the heat of LED module 20 (LED22) is dispelled the heat via framework 60, generally speaking, resinous framework 60 is compared with metal framework 60 because heat conductivity is poor, so radiating effect also reduces.But in the present embodiment, owing to can obtaining as described above higher thermal diffusivity, even therefore resinous framework 60, the temperature that also can suppress fully LED module 20 (LED22) rises.And, by be made as peripheral framework 60 with resin, thereby can realize the LED lamp with good insulating properties.

In sum, by the related LED lamp 1 of present embodiment, owing to possessing radiator 80, and this radiator 80 has the main part 81 contacting for face with supporting station 30 and the fin portions 82 of extending to the inner space of framework 60, and the heat that therefore can occur LED module 20 (LED22) expeditiously be dispelled the heat.

When the chip temperature Ts of actual measurement LED module 20, be provided with the formation of radiator 80 and compare with radiator 80 is not set, can make chip temperature Ts reduce by 4 ℃.Accordingly, can easily realize the LED lamp that is equivalent to 10W.

(lighting device)

And the utility model not only can be realized as this LED lamp, and can realize as the lighting device that possesses LED lamp.Below, utilize Fig. 7 to describe the related lighting device of embodiment of the present utility model.Fig. 7 is the summary section of the related lighting device of embodiment of the present utility model.

As shown in Figure 7, the related lighting device 2 of embodiment of the present utility model is for example installed in indoor ceiling and uses, and possesses the related LED lamp 1 of above-mentioned embodiment and the utensil 3 of lighting a lamp.

The utensil 3 of lighting a lamp has the function that makes LED lamp 1 turn off the light and light a lamp, and possesses and is installed in the appliance body 4 of ceiling and the lampshade 5 that covers the light transmission of LED lamp 1.

Appliance body 4 has lamp socket 4a.At lamp socket 4a, be mounted the lamp holder 70 of LED lamp 1.Via this lamp socket 4a electric power, be fed into LED lamp 1.

And, as ligthing paraphernalia, limit by the formation shown in Fig. 7, also can adopt as Down lamp or this ceiling flush type ligthing paraphernalia that is embedded to ceiling and is set up of shot-light etc.

(other)

According to embodiment, the utility model related LED lamp and lighting device are illustrated above, the utility model is limit by these embodiments not.

And, in the above-described embodiment, although the inclined side 82a in pair of radiating fan portion 82 is constituted as to identical direction, shears and become symmetrical shape, but being not limited by this.That is to say, although that relative fin portions 82 is constituted as identical shaped metallic plate is relative, but be not limited by this.In this case, the fin portions 82 relative due to the solder side with circuit substrate 41 is preferably constituted as, the width of this fin portions 82 narrows down gradually along with approaching circuit substrate 41, so the shear direction of a side's relative with the component side of circuit substrate 41 fin portions 82, as long as be different from the incline direction of a side's relative with the solder side of circuit substrate 41 fin portions 82.That is,, as long as the fin portions 82 relative with the component side of circuit substrate 41 is constituted as, along with approaching circuit substrate 41, the width of this fin portions 82 narrows down gradually.

And, although be constituted as in the above-described embodiment 82 both sides of pair of radiating fan portion, be all sheared, but can be also only for the side among pair of radiating fan portion 82, to shear.That is, the also square one-tenth inclined side 82a among pair of radiating fan portion 82 only.And inclined side 82a is not essential, pair of radiating fan portion 82 can not arrange inclined side 82a yet.

And, in the above-described embodiment, although framework 60 by resin, formed, but also can be formed by metals such as aluminium.And, in the situation that using metal framework 60, in order to ensure the insulating properties of drive circuit 40, also can be in the inner side of metal framework 60 further configuration can surround the resinous framework (circuit case) of drive circuit 40.In the situation that using metal framework 60, can also configure the resinous framework that surrounds framework 60 and be configured, using as peripheral framework.

And, in the above-described embodiment, by incised notch portion 53 being set at circuit retainer 50, thereby the gap between radiator 80 and circuit retainer 50 and the inner space of framework 60 are spatially communicated with, but, as the inner space of this gap and framework 60 connection method spatially, be not limited by this.For example can through hole be set by the flat part 51 at circuit retainer 50, thereby this gap is spatially communicated with the inner space of framework 60.And this through hole also can, after having formed incised notch portion 53, further form.

And, in the above-described embodiment, though as LED22, adopted the LED element of packed SMD type, be not limited by this.For example, as LED22, can adopt bare chip, and on substrate 21, form COB (Chip On Board: the chip on board) LED module 20 of structure by a plurality of LED22 (bare chip) are directly installed on.And in this case, a plurality of bare chips are by sealing in the lump containing fluorophor resin.

And, in the above-described embodiment, although the formation of LED module 20 is to emit white light by blue led chip and yellow fluorophor, but be not limited by this.For example, in order to improve color rendering, except yellow fluorophor, can also sneak into red-emitting phosphors or green-emitting phosphor.And, also can not use yellow fluorophor, but adopt contain red-emitting phosphors and green-emitting phosphor containing fluorophor resin, and by with the combined formation of emitting white light of blue led chip.

And in the above-described embodiment, LED chip also can adopt the LED chip of the light that sends blue color in addition.For example, in the situation that use the LED chip of luminescence-utraviolet, can, by sending the fluorophor particle combination of each color of the light of three primary colors (red, green, blueness), be used as fluorophor particle.And, also can adopt fluorophor particle wavelength shifter in addition, such as also adopting and contain as this light that can absorb certain wavelength such as semiconductor, metal complex, organic dyestuff, pigment as wavelength shifter, and send the material of the material of the light different from the light wavelength absorbing.

And, in the above-described embodiment, electroluminescent) or other the solid-state light emitting element such as inorganic EL although show for example LED as light-emitting component, but also can adopt other semiconductor light-emitting elements, organic EL (the Electro Luminescence: such as semiconductor laser.

In addition, the various distortion of execution that can expect for each embodiment those skilled in the art and the embodiment that obtains or, the embodiment that the inscape in each embodiment and function is at random combined to realize in the scope that does not depart from purport of the present utility model is all included in the utility model.

symbol description

1 LED lamp

2 lighting devices

3 utensils of lighting a lamp

4 appliance bodies

4a lamp socket

5 lampshades

10 enclosed globe shades

11 peristomes

20 LED modules (light emitting module)

21 substrates

22 LED

23 electrode terminals

30 supporting stations

31,51 flat parts

31a, 81a first surface

Second of 31b, 81b

32,52 side wall portions

The little portion in 32a footpath

The large portion in 32b footpath

33a the first through hole

33b the second through hole

40 drive circuits

41 circuit substrates

41a, 61 protuberances

50 circuit retainers (retainer)

52a claw

53,81c incised notch portion

54 circuit substrate maintaining parts

54a, 56a lock pawl

55 circuit substrate limiting units

56 module substrate maintaining parts

57 module substrate limiting units

57a planar portions

57b gap

58 flanks

60 frameworks

60a the first peristome

60b the second peristome

60c, 81 main parts

62 fasteners

70 lamp holders

80 radiators

82 fin portions

82a inclined side

Claims (6)

1. a light source, is characterized in that, possesses:

Light emitting module;

Supporting station, has put described light emitting module;

Drive circuit, for making described light emitting module luminous;

Framework, accommodates described drive circuit, and has peristome at two ends;

Retainer, is arranged on the peristome side of one end of described framework, and for keeping described drive circuit;

Lamp holder, is arranged on the peristome side of the other end of described framework, and for accepting electric power from outside; And

Radiator, the heat that described light emitting module is occurred when luminous, dispels the heat via described supporting station,

Described supporting station has first surface and second, and described first surface is the face that puts described light emitting module, and described the second face is the face of a side contrary to described first surface,

Described radiator has main part and fin portions, described main part has described second plane contacting with described supporting station, described fin portions is connected with described main part, and extends to the inner space of described framework in the mode not contacting with described framework

The inner space of described framework is spatially communicated with described supporting station.

2. light source as claimed in claim 1, is characterized in that,

Described supporting station with seal described framework described one end peristome mode and be set up,

The described main part of described radiator is configured between described supporting station and described retainer, and, with described retainer between there is the state in the gap being communicated with the inner space of described framework and be configured.

3. light source as claimed in claim 2, is characterized in that,

At described retainer, be formed with to the side-prominent flank of described radiator one,

The described main part of described radiator is pressed by described flank.

4. the light source as described in any one of claims 1 to 3, is characterized in that,

Described drive circuit has circuit substrate, and this circuit substrate is configured to, and the axle with the peristome of described one end from described framework towards the direction of the peristome of the described other end is parallel,

The part on the limit of the front end of the bearing of trend of described fin portions, inclined with respect to the described plane of described main part.

5. light source as claimed in claim 4, is characterized in that,

The interarea of one side of described circuit substrate is the face that is formed with the metal line of regulation shape,

The part on the limit of the front end of the bearing of trend of described fin portions, tilts in the mode that the width of this fin portions narrows down gradually along with approaching the interarea of a described side.

6. the light source as described in any one of claims 1 to 3, is characterized in that,

Described framework consists of resin.