CN104100853A - Lamp and manufacturing method thereof - Google Patents

Abstract

The invention relates to a lamp, which comprises a lamp holder, a light source, a lamp cap and a lamp shade, wherein the light source is arranged on the lamp holder, the lamp cap is connected with the lamp holder, and the lamp shade covers the light source and is provided with a long opening hole. The lamp has higher heat radiating efficiency. The invention also provides a manufacturing method of the lamp.

Description

Light fixture and manufacture method thereof

Technical field

The present invention relates to a kind of light-emitting device, particularly relate to a kind of light fixture.

Background technology

Existing light fixture is generally comprised of lamp socket, lampshade, light source and lamp holder.Light source is installed on lamp socket, and is connected with lamp holder conduction.Lampshade is fixed on lamp socket and seals up light source.Yet, for some to heat than more sensitive light source, such as light emitting diode etc., because light source is sealed in lampshade, cause the heat in lampshade to be difficult for distributing in lampshade, have influence on the normal work of this type of light source.

Summary of the invention

Therefore, be necessary to provide light fixture and the manufacture method thereof that a kind of radiating efficiency is high.

A light fixture, comprises lamp socket, is installed on the light source on lamp socket, the lamp holder that connects lamp socket and the lampshade that cover is established light source, and lampshade is provided with microscler perforate.

A manufacture method for light fixture, comprising: sheet material is provided; Machining sheet, forms the lampshade with microscler perforate; Lampshade is engaged on the lamp socket that light source is installed.

Because lampshade is provided with perforate, so the heat that light source sends can directly outwards distribute via the perforate of lampshade, thereby promotes the radiating efficiency of whole light fixture.

With reference to the accompanying drawings, the invention will be further described in conjunction with specific embodiments.

Accompanying drawing explanation

Fig. 1 shows the stereogram of the light fixture of one embodiment of the invention.

Fig. 2 is the inversion figure of the light fixture of Fig. 1.

Fig. 3 is the exploded view of the light fixture of Fig. 1, and wherein light source is removed to facilitate observation.

Fig. 4 is the inversion figure of the light fixture of Fig. 3.

Fig. 5 is the profile of the light fixture of Fig. 1.

Fig. 6 is the distribution curve flux of the light fixture of Fig. 1.

Fig. 7 is the profile of the light fixture of another embodiment of the present invention.

Fig. 8-13 are each manufacturing step of the light fixture of Fig. 1.

Figure 14 is the stereogram of lampshade of the light fixture of further embodiment of this invention.

Main element symbol description

The following specific embodiment further illustrates the present invention in connection with above-mentioned accompanying drawing.

The specific embodiment

Refer to Fig. 1 and Fig. 5, the light fixture 10 of one embodiment of the invention is shown.Light fixture 10 comprises a lamp holder 20, a lamp socket 30, a light source 40 and a lampshade 50.

See also Fig. 2-4, lamp socket 30 is made by the material of heat conduction and insulation, as pottery, heat-conducting plastic etc.In the present embodiment, lamp socket 30 is one-body molded by pottery.Lamp socket 30 comprises that a substrate 32, a sleeve 34 and extending to lamp holder 20 directions from substrate 32 peripheries are formed at the socket part 36 of sleeve 34 bottoms.Substrate 32 is in the form of annular discs, and it comprises an end face 320 and the bottom surface 322 parallel with end face 320.On substrate 32, offer four perforation 324 that are through to bottom surface 322 from its end face 320.This four perforation 324 is uniformly distributed on substrate 32, and near substrate 32 outboard peripheries.The quantity that is appreciated that described perforation 324 also can be two, three etc., and its position is also not limited to the edge at substrate 32.Sleeve 34 extends downward vertically from the outboard peripheries of substrate 32.In the present embodiment, sleeve 34 is cylindrical, and its thickness is greater than the thickness of substrate 32.Sleeve 34 forms the flange 38 of an evagination near the position of bottom in its outside circumference.This flange 38 is annular, and its end face 380 is lower than substrate 32 end faces 320, and its bottom surface 382 is higher than the bottom surface 342 of sleeve 34.And the end face 380 of flange 38 and the spacing of substrate 32 end faces 320 are greater than the spacing of flange 38 bottom surfaces 382 and sleeve 34 bottom surfaces 342.In the present embodiment, the bottom surface 382 of flange 38 is skewed, and it is the taper of convergent towards the bottom surface 342 of sleeve 34.The internal diameter of sleeve 34 is consistent from top to bottom, and sleeve 34 is greater than the external diameter lower than flange 38 positions at the external diameter higher than flange 38 positions.The bottom of socket part 36 branch sleeves 34.The internal diameter of socket part 36 is identical with the internal diameter of sleeve 34, and external diameter is less than the minimum outer diameter of sleeve 34.The bottom surface 322 of the interior lateral circle surface of socket part 36, the interior lateral circle surface of sleeve 34 and substrate 32 surrounds a cylindrical space 300 jointly, for accommodating a driving module 60.This space 300 is communicated with the space of substrate 32 tops by four perforation 324 of substrate 32.In the outside circumference of socket part 36, form screw thread 360, for being spirally connected with lamp holder 20.

Light source 40 comprises a circuit board 44 and is installed on the light emitting diode 42 on circuit board 44.Circuit board 44 is preferably metal-based circuit board (using metal as substrate, then form successively insulating barrier and circuit layer in metallic substrates), so that the stronger capacity of heat transmission to be provided.It is upper that the chip (not shown) of light emitting diode 42 is directly installed on circuit board 44 (chip on board), and thus, the heat producing during chip operation can be directly conducted on circuit board 44, thereby promote heat transfer efficiency.The chip of light emitting diode 42 is preferably by semiconductive luminescent materials such as gallium nitride, InGaN, aluminum indium nitride galliums and makes, and it excites and will send blue light down being subject to electric current.Two electrodes of chip are by two wires or by flip chip technology, be directly connected in two electrode (not shown) of circuit board 44, thereby conduct with circuit board 44.Light emitting diode 42 also comprises the encapsulated layer (not shown) that covers chip.Encapsulated layer is preferably made by translucent material, as epoxy resin, silica gel etc.In encapsulated layer further doped with fluorescent material.Fluorescent material can be made by fluorescent materials such as yttrium-aluminium-garnet, silicate, oxide, nitrogen oxide, and it can send gold-tinted under the exciting of chip blue light, and then becomes white light with blue light.Two electrodes of circuit board 44 are connected with driving module 60 by the wire 70 through substrate 32 perforation 324, thereby provide electric energy for chip.

Lampshade 50 is integrally formed by metal material.Preferably, the present invention adopts aluminium as the material of lampshade 50, so that lampshade 50 has higher heat-sinking capability.The thickness of lampshade 50 can be less than the thickness of substrate 32.Lampshade 50 comprises a housing 52 and is formed at a flanging 54 of housing 52 bottoms.Flanging 54 extends straight down from housing 52 bottoms.Flanging 54 is circular, and its internal diameter is more than or equal to the external diameter that sleeve 34 is positioned at flange 38 tops.Thus, flanging 54 can be sheathed in sleeve 34 outside circumference, thereby lampshade 50 is connected on lamp socket 30.The external diameter of flanging 54 is less than the external diameter of flange 38, therefore, flanging 54 on being sheathed on sleeve 34 after, will be connected to the end face 380 of flange 38, thereby prevent that whole lamp socket 30 is absorbed in lampshade 50.Because lampshade 50 can directly be connected on lamp socket 30 by flanging 54, thereby the assembling between lampshade 50 and lamp socket 30 is very convenient, thereby simplifies the assembling process of whole light fixture 10.The first half of housing 52 is hemispherical, and the latter half is the taper of convergent down.On housing 52, offer a plurality of perforates 520, in the present embodiment, the plurality of perforate 520 is evenly opened on housing 52.In the present embodiment, each perforate 520 is all rounded.These perforates 520 extend to the position near housing 52 bottoms from the top of housing 52.These perforates 520 are multiserial circle and are located in the whole outside circumference of housing 52.Wherein, the minimum number of the perforate 520 of top line, the quantity of each row perforate 520 increases towards housing 52 middle parts gradually from housing 52 tops, and reduces gradually again from housing 52 middle parts towards housing 52 bottoms.In other words, the variation tendency that the external diameter of the quantity of each row perforate 520 and housing 52 is consistent.In the present embodiment, the height of substrate 32 flushes with the height of the perforate of bottom line 520.Therefore,, after lampshade 50 and lamp socket 30 assemblings, light emitting diode 42 will be higher than the perforate 520 that is positioned at bottom line, and roughly flushes with the perforate 520 of row second from the bottom below.Certainly, consider security reason, the height of light emitting diode 42 can also be lower than bottom line perforate 520 (as shown in Figure 7), thereby avoids directly seeing light emitting diode 42 from perforate 520.

Because lampshade 50 is to be made of metal, thereby its interior sidewall surface possesses higher reflectivity (certainly, also can further be coated with the material of last layer high reflectance in the interior sidewall surface of lampshade 50, to obtain better reflecting effect).Directly outgoing from the perforate 520 of lampshade 50 of a part of light that light emitting diode 42 sends, some light can direct irradiation to the interior sidewall surface of lampshade 50, then perforate 520 outgoing from lampshade 50 via the reflection of interior sidewall surface.Because the reflectivity of lampshade 50 interior sidewall surface is higher, thereby light loss in reflection process is less, thereby final light extraction efficiency is got a promotion.And, because perforate 520 is to be substantially dispersed throughout on whole housing 52, add the reflection of all directions of light in housing 52 interior sidewall surface, therefore, the light penetrating from perforate 520 can, towards all angles and orientation outgoing, be close to the 360 panorama illuminating effects of spending thereby whole light fixture 10 is obtained.Preferably, described housing 52 interior sidewall surface are diffuse surface.In addition, perforate 520 is evenly opened on housing 52 can guarantee the uniformity from the light of lampshade 50 outputs, thereby the output intensity that makes light fixture 10 each angles is consistent (as shown in Figure 6, the distribution curve flux in two mutually perpendicular directions 80,90 overlaps substantially).Moreover lampshade 50 is metal manufactures being directly sheathed on lamp socket 30, so light emitting diode 42 produces heats and can transfer on lampshade 50 by lamp socket 30, then via lampshade 50, is distributed in the middle of external environment, thereby promotes the radiating efficiency of whole light fixture 10.Certainly, because lamp socket 30 itself is also to adopt thermally conductive materials manufacture, and be to be also directly exposed in the middle of external environment, so in the middle of light emitting diode 42 heat that conducts to lamp socket 30 also can directly be distributed to external environment from lamp socket 30.Finally, because the inner space of lampshade 50 is by perforate 520 and external environment connect, therefore the heat that light emitting diode 42 produces also can directly be dispersed in the middle of light emitting diode 42 ambient airs, then this part heated air via perforate 520 directly to flowing in the middle of external environment.That is to say, light fixture 10 of the present invention has three heat dissipation path at least: article one is via lamp socket 30, to be passed to lampshade 50 outwards to dispel the heat, second is directly by lamp socket 30, outwards to be dispelled the heat, and the 3rd is to be dispelled the heat by perforate 520 and the cross-ventilation outside lampshade 50 by the air in lampshade 50.

Lamp holder 20 is a general bulb type lamp holder, and it can mate with existing light bulb holder (not shown).Lamp holder 20 comprises the sidewall 22 of a ring-type, the insulating tape 26 that a contact 24 and connects contact 24 and sidewall 22.The outside circumference of sidewall 22 and interior lateral circle surface form corresponding screw thread 220.Sidewall 22 is sheathed on the socket part 36 of lamp socket 30, screw thread 360 interference engagement of its internal thread 220 and socket part 36, thus lamp holder 20 is fixing with lamp socket 30.The external screw thread 220 of sidewall 22 is for the screw-internal thread fit with existing light bulb holder, thereby light fixture 10 is fixedly connected with light bulb holder.Sidewall 22 and contact 24 all adopt metal material to make, and insulating tape 26 connects sidewalls 22 and contact 24 and by the two insulation.Drive module 60 to connect respectively sidewall 22 and contact 24 by two wires 70, thereby be received from the electric energy of lamp holder 20 inputs.Because lamp socket 30 is the ceramic material manufactures that adopt insulation, so metal shade 50 can insulate by lamp socket 30 with lamp holder 20, thereby avoids lampshade 50 charged.

As shown in Fig. 8-13, the present invention further provides a kind of manufacture method of light fixture 10, it mainly comprises the steps:

One sheet metal 50a is provided first, as shown in Figure 8.This sheet metal 50a is preferably aluminium sheet, so that preferably ductility to be provided, facilitates follow-up manufacture process.The end face of sheet metal 50a is parallel with bottom surface.

Then, by punching press, from sheet metal 50a, intercept the model 52a (Fig. 8 only illustrates) that produces a plurality of cup-shapeds as shown in Figure 9.Each model 52a comprises plate body 54a and the side plate 56a from the outboard peripheries of plate body 54a to downward-extension of a circle.Side plate 56a is annular and around plate body 54a, and the thickness of side plate 56a equates with the thickness of plate body 54a.A region (a-quadrant as shown in FIG.) of the corresponding sheet metal 50a of each model 52a.In punching course, the a-quadrant of sheet metal 50a is separated with other parts of sheet metal 50a gradually, wherein the middle part of a-quadrant keeps original level and forms plate body 54a, and the side of a-quadrant bends and formation side plate 56a downwards under the pressure-acting of mould.In punching course, the thickness of sheet metal 50a does not change substantially, and the thickness of the final model 52a forming equates with the thickness of sheet metal 50a.

Afterwards, as shown in figure 10 the side plate 56a of model 52a is stretched, its length is increased.Due to the good ductility of aluminium, thereby be not easy to rupture at drawing process latus inframedium 56a, thereby guarantee the reliability of manufacture process.Side plate 56a is after stretching, and length increases, and thickness reduces.That is to say, the thickness of stretched side plate 56a is less than the thickness of plate body 54a.

Subsequently, again the plate body 54a of model 52a is carried out to punching press as shown in figure 11, make it form hemispheric structure.In punching course, plate body 54a is become hemispherical by tabular, thereby area increase, and thickness reduces.Finally, the thickness of plate body 54a is tending towards being consistent with the thickness of side plate 56a.Understandably, the shape of plate body 54a is that the shape by the mould of punching press determines, be that hemispheric mould can produce hemispheric plate body 54a, therefore, the plate body 54a (as ellipse, taper etc.) that produces if necessary other shapes, only needs to adopt the mould with respective shapes.

Then, on the surface of model 52a, form perforate 520 as shown in figure 12.In the mode of model 52a surface perforate, can have multiple, such as, can first in the inside sheathed one of model 52a, there is the internal mold in hole, pre-subdrilling position, then in the outside of model 52a with the position in metal bit hole, corresponding pre-subdrilling position on model 52a to internal drilling; Or insert in model 52a to support model 52a with the internal mold of a hollow, then drill bit is put into model 52a, from inside to outside boring; Or be first with the internal mold of a hollow, to insert in model 52a to support model 52a, then instrument is put into model 52a, punching press from inside to outside, thus at model 52a outer surface, form projection, finally again in model 52a outside by cutter by projection along model 52a skin cut.

As shown in figure 13, then the side plate 56a of model 52a is carried out to further moulding, make it form the taper that diameter reduces from top to bottom gradually, and in the bottom of side plate 56a, form the flanging 54 of ring-type simultaneously.Side plate 56a can adopt the mode moulding of extruding rotation, such as side plate 56a is put into opening convergent rotary die in the middle of, by side plate 56a is pressed in rotary die gradually, side plate is pushed by the opening of convergent and is out of shape, thereby forms the pyramidal structure with ring-type flanging 54.So far, the lampshade 50 of light fixture 10 has been manufactured.

Finally, the lamp socket 30 that is pre-installed lamp holder 20, light source 40 and driving module 60 is aimed to the flanging 54 of lampshades 50, penetrated from bottom to top in lampshade 50, until sleeve 34 outside circumference of the flanging 54 socket lamp sockets 30 of lampshade 50 end face 380 of butt flange 38.Thus, complete the assembling process of whole light fixture 10.

Because the present invention adopts metal as the material of lampshade 50, so manufacture process is obviously different from the manufacture process of traditional glass or plastic lamp shade.Especially, the whole processing procedure of metal shade 50 is simple than the processing procedure of traditional glass or plastic lamp shade, and, manufacture and assembling process in also without specially noting lampshade 50 (traditional glass lamp shade is because frangible paying particular attention to handled with care), therefore volume production speed is faster, can effectively increase the output of light fixture 10 within the unit interval.In addition, than glass lamp shade, the cost of metal shade 50 is more cheap, can effectively reduce the totle drilling cost of whole light fixture 10, thereby is more conducive to applying of market.

Understandably, after the side plate 56a to model 52a narrows, can also to lampshade 50 outer surfaces, process further, make it to form smooth surface, so that lampshade 50 has preferably outward appearance; Or in lampshade 50, by the mode of electroplating, form the reflecting layer of high reflectance, to promote reflecting effect.

The present invention also further provides a kind of light fixture 10 with different perforate 520b shapes.Refer to Figure 14, show the lampshade 50b of the light fixture 10 of another embodiment of the present invention.This light fixture 10 other elements except lampshade 50b are identical with a upper embodiment all, therefore all not shown in Figure 14.The shape of the lampshade 50b of light fixture 10 is also identical with lampshade 50 shapes of a upper embodiment, and difference is only the shape of perforate 520b and arranges.These perforates 520b is all microscler, and being circumferentially evenly spaced along the housing 52b of lampshade 50b.Each perforate 520b extends towards the second place of lampshade 50b from the primary importance of lampshade 50b.The primary importance of lampshade 50b is compared the more close lamp socket 30 of the second place.Preferably, primary importance is positioned at the position near lamp socket 30, and the second place is positioned at the position away from lamp socket 30.That is to say, primary importance is near the bottom of lampshade 50b, and the second place is near lampshade 50b top.Certainly, primary importance also can be positioned at the middle part of lampshade 50b, and the second place is near the top of lampshade 50b; Also can primary importance near the bottom of lampshade 50b, the second place is positioned at the middle part of lampshade 50b; Or other is lower upper over against even oblique right position.In addition, the bearing of trend of the perforate 520b in the present embodiment also can be understood as axial consistent with the flanging 54b bearing of trend of lampshade 50b or lampshade 50b.The bottom of each perforate 520b ends at the top, housing 52b bottom of lampshade 50b, and top ends at the below, top of the housing 52b of lampshade 50b; The connecting portion 53b of one dome-shaped connecting portion 51b and an annular is formed respectively on the top of the housing 52b that thus, lampshade 50b does not extend at perforate 520b and bottom.The part of lampshade 50b between each adjacent two perforate 520b forms the fin 56b of lengthwise.The width of each fin 56b first increases and reduces from top to bottom.The top of each fin 56b and bottom connect by two connecting portion 51b, the 53b of housing 52b respectively, thus shape all-in-one-piece structure, to increase the intensity of lampshade 50b.The heat of lampshade 50b can distribute to the external world via these fins 56b, thereby promotes the radiating effect of light fixture 10.And because perforate 520b is microscler, so the air in lampshade 50b and the convection current between outside air will be more unobstructed, thereby further promote the radiating effect of lampshade 50b.In addition, because perforate 520b is microscler, so the forming step of perforate 520b can carry out after punching press forms the model 52a of cup-shaped, even can before stamped metal sheet material 50a, just be pre-formed.In follow-up side plate 56a drawing process, perforate 520b can be stretched together in company with side plate 56a.Because needed perforate 520b itself is just microscler, even if be therefore stretched, also still can meet the requirement to shape.And, follow-up side plate 56a narrow process in the microscler of perforate 520b substantially can be not influenced yet.Thus, the processing procedure of lampshade 50b with microscler perforate 520b is more flexible, according to the actual requirements each manufacturing step of deploying.

In addition, it may be noted that in the present invention so-called microsclerly, refer to that the length of shape is greater than width, be not limited to rectangular definition.Such as, it is defined microscler that the strip of two ends semicircular in shape, triangle or other shapes all belongs to the present invention.

Claims (20)

1. a light fixture, comprises lamp socket, is installed on the lampshade that the light source on lamp socket, the lamp holder that is connected to lamp socket and cover are established light source, it is characterized in that: on lampshade, offer microscler perforate.

2. light fixture as claimed in claim 1, is characterized in that: light fixture is bulb.

3. light fixture as claimed in claim 1, is characterized in that: light source comprises light emitting diode.

4. light fixture as claimed in claim 1, is characterized in that: the part light that light source sends is directly from perforate outgoing, and another part light that light source sends reflects afterwards from perforate outgoing via the interior sidewall surface of lampshade.

5. light fixture as claimed in claim 1, is characterized in that: lampshade is manufactured by light-proof material.

6. light fixture as claimed in claim 1, is characterized in that: lampshade is manufactured by thermally conductive materials.

7. light fixture as claimed in claim 1, is characterized in that: lampshade is manufactured by metal material.

8. the light fixture as described in claim 1 to 7 any one, is characterized in that: the perforate of lampshade extends to the second place of lampshade from the primary importance of lampshade, and primary importance is compared the more close lamp socket of the second place.

9. light fixture as claimed in claim 8, is characterized in that: the second place is near the top of lampshade, and primary importance is near the bottom of lampshade.

10. light fixture as claimed in claim 1, is characterized in that: the quantity of perforate is a plurality of, forms fin between adjacent apertures.

11. light fixtures as claimed in claim 10, is characterized in that: lampshade above perforate and below form respectively connecting portion, the top of fin and bottom connect by corresponding connecting portion.

12. light fixtures as claimed in claim 11, is characterized in that: the width at fin middle part is greater than the width at two ends.

13. light fixtures as described in claim 1, is characterized in that: lampshade comprises housing and the flanging from housing to downward-extension, and perforate is formed on housing, and lampshade is sheathed on lamp socket by flanging.

14. light fixtures as claimed in claim 13, is characterized in that: lamp socket comprises substrate, the sleeve from substrate periphery to downward-extension of supporting light sources and be formed at the flange of sleeve outside circumference, and flanging is sheathed on sleeve and the top of butt flange.

The manufacture method of 15. 1 kinds of light fixtures as described in claim 1-7 any one, comprising:

Sheet material is provided;

Machining sheet, forms the lampshade with microscler perforate;

Lampshade is engaged on the lamp socket that light source is installed.

16. manufacture methods as claimed in claim 15, is characterized in that: the step of machining sheet comprises carries out punching press to sheet material, form the step of the model of cup-shaped, and model comprises plate body and around the side plate of plate body.

17. manufacture methods as claimed in claim 16, is characterized in that: the step of machining sheet comprises the step that the side plate of model is stretched.

18. manufacture methods as claimed in claim 17, is characterized in that: the step of machining sheet comprises the step that the side plate after stretching is narrowed towards the direction away from plate body.

19. manufacture methods as claimed in claim 17, is characterized in that: the step of machining sheet is got the step of perforate to model before being included in tension side plates, and formed perforate is together stretched in the drawing process of side plate.

20. manufacture methods as claimed in claim 18, is characterized in that: flanging is formed on the bottom at side plate in the process that side plate is narrowed, and lampshade is sheathed on lamp socket by flanging.