CN203231131U

CN203231131U - Lamp

Info

Publication number: CN203231131U
Application number: CN2013201603187U
Authority: CN
Inventors: 孔德元; 张徐; 詹爵光; 牛涛
Original assignee: Kang Zhun Electronical Technology Kunshan Co ltd; Hongfujin Precision Industry Shenzhen Co Ltd; Hon Hai Precision Industry Co Ltd
Current assignee: Kang Zhun Electronical Technology Kunshan Co ltd; Hongfujin Precision Industry Shenzhen Co Ltd; Hon Hai Precision Industry Co Ltd
Priority date: 2013-04-02
Filing date: 2013-04-02
Publication date: 2013-10-09
Anticipated expiration: 2023-04-02
Also published as: TWM493635U

Abstract

A lamp comprises a lamp holder, a lamp base connected with the lamp holder, a light source installed on the lamp base and a lampshade covering the light source. A plurality of holes with at least two different sizes and for the light source to emit light are formed in the lampshade. The lamp is high in radiating efficiency.

Description

Light fixture

Technical field

The utility model relates to a kind of light-emitting device, refers to a kind of light fixture especially.

Background technology

Existing light fixture generally is made up of lamp socket, lampshade, light source and lamp holder.Light source is installed on the lamp socket, and is connected with the lamp holder conduction.Lampshade is fixed on the lamp socket and seals up light source.Yet for some light sources relatively responsive to heat, for example light emitting diode etc. because light source is sealed in the lampshade, causes the heat in the lampshade to be difficult for distributing in lampshade, has influence on the operate as normal of this type of light source.

The utility model content

Therefore, be necessary the light fixture that provides a kind of radiating efficiency high.

A kind of light fixture comprises lamp holder, the lamp socket that is connected with lamp holder, is installed on the light source on the lamp socket and is covered with the lampshade of light source, and lampshade offers the perforate of a plurality of beam projectings that send for light sources, and described a plurality of perforates comprise at least two kinds of different sizes.

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 utility model will be further described in conjunction with specific embodiments.

Description of drawings

Fig. 1 shows the stereogram of the light fixture of the utility model first embodiment.

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 with convenient and observes.

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 profile of the light fixture of the utility model second embodiment.

Fig. 7 is the profile of the light fixture of the utility model the 3rd embodiment.

The main element symbol description

The following specific embodiment will further specify the utility model in conjunction with above-mentioned accompanying drawing.

The specific embodiment

See also Fig. 1 and Fig. 5, the light fixture 10 of the utility model first embodiment 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 from the downward extension of 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.Offer four perforation 324 that are through to bottom surface 322 from its end face 320 on the substrate 32.This four perforation 324 is uniformly distributed on the substrate 32, and near substrate 32 outboard peripheries.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 the spacing of substrate 32 end faces 320 greater than 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, sleeve 34 at the external diameter that is higher than flange 38 positions greater than the external diameter that is lower 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, is used for accommodating one and drives module 60.This space 300 is communicated with the space of substrate 32 tops by four perforation 324 of substrate 32.Form screw thread 360 on the outside circumference of socket part 36, be used for being spirally connected with lamp holder 20.

Light source 40 comprises a circuit board 44 and is installed on a light emitting diode 42 on the circuit board 44.Circuit board 44 is preferably metal-base circuit plate (namely with metal as substrate, form insulating barrier and circuit layer in metallic substrates successively then), so that the stronger capacity of heat transmission to be provided.The chip (not shown) of light emitting diode 42 directly is installed on the circuit board 44 (chip on Board), and thus, the heat that produces during chip operation can be directly conducted on the circuit board 44, thereby promotes 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 down blue light being subjected to electric current.Two electrodes of chip are by two leads or be directly connected in by flip chip technology on the 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.Further be doped with fluorescent material in the encapsulated layer.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 lead 70 that passes substrate 32 perforation 324, thereby provide electric energy for chip.

Lampshade 50 is integrally formed by metal material.Preferably, the utility model adopts aluminium as the material of lampshade 50, so that lampshade 50 has higher heat-sinking capability.The thickness of lampshade 50 is 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 positioned at the external diameter of flange 38 tops more than or equal to sleeve 34.Thus, flanging 54 can be sheathed on sleeve 34 outside circumference, thereby lampshade 50 is connected on the 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 the lampshade 50.Because lampshade 50 can directly be connected on the lamp socket 30 by flanging 54, thereby the assembling between lampshade 50 and the 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.Evenly offer a plurality of perforates 520 on the housing 52, these perforates 520 have two kinds of different sizes at least.These perforates 520 can be identical shape, for example all are circle, ellipse, triangle etc.The size of these perforates 520 can be that the size of each row perforate 520 is all different with two the sizes of perforate 520 between capable that are adjacent, for example, can increase gradually or dwindle along predetermined direction, namely, the size of perforate 520 reduces gradually from top to the bottom of housing 52, that is to say the size maximum of the perforate 520 at the top that is positioned at housing 52, be positioned at the size minimum of perforate 520 of the bottom of housing 52.In the present embodiment, the bottom to housing 52 reduces the size of these perforates 520 gradually from the top of housing 52.Because be positioned at the size maximum of the perforate 520 at housing 52 tops, thereby allow light fixture 10 more forward emergent raies from bigger perforate 520 outgoing of top dimension, therefore improving light fixture 10 forwards goes out luminous intensity, forms the forward bright dipping light field of comparatively concentrating.These perforates 520 extend to the position of close housing 52 bottoms from the top of housing 52.These perforates 520 are multiserial circle and are located on the whole outside circumference of housing 52.Wherein, the minimum number of the perforate 520 of top line, its size are also maximum, and 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 is consistent of the external diameter of each row quantity of perforate 520 and housing 52.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 were assembled, 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 following row second from the bottom.Certainly, consider security reason, the height of light emitting diode 42 can also be lower than bottom line perforate 520 (as shown in Figure 6), thereby avoids directly seeing from perforate 520 light emitting diode 42.

As shown in Figure 7, be the third embodiment of the present invention, these perforates 520 can also comprise that first perforate 521 that size is different and second perforate, 522, the first perforates 521 and second perforate 522 are circle, and the diameter of first perforate 521 is greater than the diameter of second perforate 522.Arrange in the zone of first perforate 521 " M " font on housing 52, be evenly distributed with the second less perforate 522 of diameter in other zones.When the different perforate 520 of these sizes when zones of different presents different arrangement modes, light fixture 10 presents " M " font in the opening part that is " M " font light field that forms that emits beam, in other zones, present uniform light field, not only make light fixture 10 present different lighting effects, can also make light fixture 10 have certain significant and identification from profile, be beneficial to different brands and adopt this light fixture as the characteristic lighting of oneself, bigger market prospects are arranged.In addition, perforate 520 can also comprise three kinds even multiple different size, and can be arranged in the different position of lampshade 50 according to the demand of reality, forms different pattern or literal.

Because lampshade 50 is to be made of metal, thereby its interior sidewall surface possesses higher reflectivity.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 via the reflection of interior sidewall surface perforate 520 outgoing from lampshade 50.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 dispersed throughout substantially on the whole housing 52, add the reflection of all directions of light on housing 52 interior sidewall surface, therefore, the light that penetrates from perforate 520 can be towards all angles and orientation outgoing, thereby makes whole light fixture 10 obtain to be close to the panorama illuminating effects of 360 degree.In addition, in order to increase the reflection efficiency of lampshade 50 inner surfaces, can be at the further coating reflectance coating of the inner surface of lampshade 50.Because the size difference of perforate 520, when light during by the perforate 520 inequality of these sizes, the perforate 520 formed light-field effects less through larger-size perforate 520 formed light-field effects and process size are different, the light field of these two kinds of different-effects is superimposed, thereby makes light fixture 10 final light-field effects be different from the light fixture of the perforate of only adopting same size.Moreover lampshade 50 is metal manufacturings and directly being sheathed on the lamp socket 30, so light emitting diode 42 produces heats and can transfer on the lampshade 50 by lamp socket 30, is distributed in the middle of the external environment via lampshade 50 then, thereby promotes the radiating efficiency of whole light fixture 10.Certainly, because lamp socket 30 itself also is to adopt the thermally conductive materials manufacturing, and also be directly to be exposed in the middle of the 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.At last, because the inner space of lampshade 50 is by perforate 520 and external environment connect, therefore the heat that produces of light emitting diode 42 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 the external environment.That is to say, light fixture 10 of the present utility model has three heat dissipation path at least: article one is to be passed to lampshade 50 via lamp socket 30 outwards to dispel the heat, second is directly outwards to be dispelled the heat by lamp socket 30, and the 3rd is by the cross-ventilation heat radiation outside perforate 520 and the lampshade 50 by the air in the 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 used for the screw-internal thread fit with existing light bulb holder, thereby light fixture 10 is fixedlyed 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 with the two insulation.Drive module 60 and connect sidewall 22 and contact 24 respectively by two leads 70, thereby be received from the electric energy of lamp holder 20 inputs.Because lamp socket 30 is ceramic material manufacturings of adopting insulation, thus metal shade 50 can with lamp holder 20 by lamp socket 30 insulation, thereby avoid lampshade 50 charged.

Claims

1. light fixture, comprise lamp holder, the lamp socket that is connected with lamp holder, be installed on the light source on the lamp socket and be covered with the lampshade of light source, it is characterized in that: lampshade offers the perforate of a plurality of beam projectings that send for light sources, and described a plurality of perforates comprise at least two kinds of different sizes.

2. light fixture as claimed in claim 1 is characterized in that: the part light that light source sends is directly from the perforate outgoing, other light earlier by after the reflection of the interior sidewall surface of lampshade again from the perforate outgoing.

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

4. light fixture as claimed in claim 1, it is characterized in that: lampshade is by the thermally conductive materials manufacturing.

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

6. light fixture as claimed in claim 1, it is characterized in that: lampshade is by the metal manufacturing, and the quantity of perforate is a plurality of.

7. light fixture as claimed in claim 1, it is characterized in that: perforate is opened on the lampshade from top to bottom line by line, and the size of perforate reduces from top to bottom line by line.

8. light fixture as claimed in claim 1, it is characterized in that: perforate comprises first perforate and second perforate, and the size of first perforate is greater than the size of second perforate, and the first perforate permutation and combination forms literal or pattern form.

9. light fixture as claimed in claim 7, it is characterized in that: light source is higher than the perforate of bottom line.

10. light fixture as claimed in claim 7, it is characterized in that: light source is lower than the perforate of bottom line.

11. light fixture as claimed in claim 7 is characterized in that: the variation tendency of the quantity of each row perforate is consistent with the variation tendency of the external diameter of lampshade.

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

13. light fixture as claimed in claim 1 is characterized in that: the top of lampshade is hemispherical, and the bottom is tapered.

14. as each described light fixture of claim 1 to 13, it is characterized in that: the top of lamp socket is inserted in the lampshade.

15. as each described light fixture of claim 1 to 13, it is characterized in that: lampshade comprises housing and the flanging that extends from housing downwards, and perforate is opened on the housing, and flanging is sheathed on the outside circumference of lamp socket and lampshade is connected on the lamp socket.

16. light fixture as claimed in claim 15 is characterized in that: lamp socket comprises substrate, connects the sleeve of substrate and the flange that outwards protrudes out from the sleeve outside circumference, the top of the bottom butt flange of flanging.