CN202382034U

CN202382034U - Led lamp tube

Info

Publication number: CN202382034U
Application number: CN2011204465353U
Authority: CN
Inventors: 李旭明; 曹勇
Original assignee: SHENZHEN MIANLAND SHINE LED TECH Co Ltd
Current assignee: SHENZHEN MIANLAND SHINE LED TECH Co Ltd
Priority date: 2011-11-10
Filing date: 2011-11-10
Publication date: 2012-08-15
Anticipated expiration: 2021-11-10

Abstract

An LED lamp tube comprises a light permeable cover, a radiation shell and a circuit board. The light permeable cover is arranged on the radiation shell, a plurality of LEDs are arranged on the circuit board which is contained in the light permeable cover, and the radiation shell covers the bottom end of the light permeable cover. The LED lamp tube is structurally characterized in that the inner wall of the radiation shell directly covers the outer wall of the light permeable cover, and the light permeable cover and the radiation shell are fixed together through a fastening structure to enable the light permeable cover and the radiation shell to form an integral frame, so that stability of the whole lamp tube is greatly improved. The circuit board is directly fixed onto the light permeable cover of the lamp tube, and accordingly unnecessary safety accidents caused by damage or breakdown of an insulating layer of the circuit board due to heat conduction requirement of the circuit board can be avoided.

Description

The LED fluorescent tube

[technical field]

The utility model relates to a kind of Novel LED lamp tube, and it is better particularly to relate to a kind of stability, and security is higher, the better LED fluorescent tube of radiating effect.

[background technology]

Nowadays widely used fluorescent lamp and incandescent lamp are shorter service life, and power consumption is big, and can cause unnecessary pollution, and therefore, people are badly in need of a kind of novel lighting apparatus.And the LED lamp replaces fluorescent lamp and incandescent lamp to become a kind of conception, because it has long service life, advantage such as energy-conservation, pollution-free with respect to fluorescent lamp and incandescent lamp.But; The LED lamp tube structure is that diffuser directly is enclosed within on the aluminium shell in the market; And inner aluminium base also is directly to be fixed on the fluorescent tube aluminium shell, and this structure can not have stopping means owing to diffuser and aluminium shell on the one hand, causes diffuser to be easy to by the external force imposed deformation; After the LED energising, the aluminium base temperature is raise gradually on the other hand, impel aluminium base will cause aluminium-base plate insulating layer withstand voltage limited because of heat conduction, when insulating barrier takes place to destroy or be breakdown, the fluorescent tube shell will conduct electricity, thereby can cause potential safety hazard.In addition, the LED in the existing LED fluorescent tube generally is welded on the aluminium base, and aluminium base is fixed on the fluorescent tube aluminium shell; That leans on aluminium base and aluminium shell contacts heat conduction; And be rigid the connection between aluminium base and the aluminium shell, because assembling needs and mismachining tolerance can't avoid, cause can not fully to contact between aluminium base and the aluminium shell; Thereby influence the radiating effect of LED lamp, shorten the service life of fluorescent tube.

[utility model content]

Use the problem of inconvenience for overcoming existing LED fluorescent tube technology, the utility model provides a kind of stability better especially, and security is higher, the better LED lamp tube structure of radiating effect.

The technical scheme of the utility model technical solution problem is: a kind of LED fluorescent tube is provided; It comprises a diffuser; An one heat radiation shell and a circuit board, this diffuser is arranged on this heat radiation shell, and this circuit board is contained in this diffuser; A plurality of LED are set on it, and this heat radiation shell coats the bottom of this diffuser.

Preferably, this heat radiation shell comprises a housing, and this housing inboard is provided with two symmetrical projections, and this diffuser comprises a shell, and two lugs that extend from these shell both ends, and two ends of this two lug and this shell are defined a platform respectively.

Preferably, top, two ends of the housing of this heat radiation shell is positioned at two platform places of this diffuser.

Preferably, two lugs of this diffuser comprise an outer wall groove respectively, and this each outer wall groove is corresponding with two projections of this heat radiation shell respectively, and accommodates it in inside grooves.

Preferably, two lugs of this diffuser comprise an inboard wall groove respectively, and itself and this outer wall groove is adjacent, accommodate the two ends of this circuit board.

Preferably, this circuit board comprises a led array, and with a heat dissipating layer, this led array and this heat dissipating layer are arranged at the both sides of this circuit board respectively, and this led array comprises a plurality of LED, and its light-emitting area is towards this diffuser, and this heat dissipating layer is corresponding with this heat radiation shell.

Preferably, this heat dissipating layer is an insulating heat-conductive silica gel sheet.

Preferably, this heat radiation shell further comprises a cooling stand, and this cooling stand is arranged at the inside of this housing, and extends along the length direction of this housing, and is one-body molded with this housing.

Preferably, this cooling stand comprises a first side wall, one second sidewall; And one the 3rd sidewall, this second sidewall respectively with this first side wall, and the 3rd sidewall vertically links to each other; This first side wall, and the 3rd sidewall extends internally from the inboard of this housing, and locate this second sidewall; The height of this second sidewall is corresponding with this two projection, and this heat dissipating layer closely contacts with this second sidewall.

Compared to prior art; The utility model LED lamp tube structure directly is coated on the outer wall of diffuser for the inwall of heat radiation shell; And through a snap-in structure with diffuser with the heat radiation shell be fixed together; Make diffuser and heat radiation hull shape framework in aggregates, so just improved the stability of whole fluorescent tube greatly.In addition, the LED lamp tube structure is that circuit board directly is fixed on the fluorescent tube diffuser, has avoided circuit board because of heat conduction need cause the circuit board insulating barrier destruction or breakdown to be taken place, and then has prevented the fluorescent tube conduction, in case unnecessary security incident takes place.Further increase a heat dissipating layer again at heat radiation shell and circuit board contact position; Heat dissipating layer fully closely contacts with the heat radiation shell with circuit board; Eliminated because the problem of the poor heat conduction that the unavoidable error of part processing is brought effectively improves LED fluorescent tube thermal diffusivity.

[description of drawings]

Fig. 1 is the cutaway view of the utility model LED fluorescent tube.

Fig. 2 is the three-dimensional explosive view of the utility model LED fluorescent tube.

[specific embodiment]

In order to make the purpose of the utility model, technical scheme and advantage are clearer, below in conjunction with accompanying drawing the utility model are further elaborated.Should be appreciated that specific embodiment described herein only in order to explanation the utility model, and be not used in qualification the utility model.

See also Fig. 1 and Fig. 2; The utility model LED fluorescent tube 100 comprises a diffuser 120; An one heat radiation shell 140 and a circuit board 160; This diffuser 120 is arranged on this heat radiation shell 140, and the shell 144 of its shell and this heat radiation shell 140 defines the space of a near cylindrical, and this circuit board 160 is contained in this diffuser 120.

This diffuser 120 is the translucent housing of a semicircular cylindricality; It comprises a shell 122; And two lugs 124 that extend from these shell 122 both ends, it is half-cylindrical that this shell 122 is, and this two lug 124 extends along the length direction of two ends of this shell 122 respectively; And respectively to the center position indentation of this shell 122, so this two lug 124 defines a platform 126 respectively with two ends of this shell 122.This each lug 124 comprises an inboard wall groove 1241 and an outer wall groove 1243; The opening of this inboard wall groove 1241 is towards the center of this diffuser 120; The opening of this outer wall groove 1243 is towards the outside of this diffuser 120; And this inboard wall groove 1241 is adjacent with this outer wall groove 1243, and two inboard wall grooves 1241 and the two outer wall grooves 1243 of this two lug 124 are symmetrical set respectively.The height of this inboard wall groove 1241 is slightly less than the height of this circuit board 160, and it is used to accommodate and fixing this circuit board 160.

This heat radiation shell 140 is generally made by aluminum alloy materials, and it comprises a housing 144, and a cooling stand 142, and this cooling stand 142 is arranged at the inside of this housing 144, and extends along the length direction of this housing 144, forms an integral body with this housing 144.This housing 144 is a half round post; Its radius equates with the radius of shell 122 outside this diffuser 120; It comprises two symmetrically arranged projections 1441; And a lead angle (not label) is set on this each projection 1441, and the height of this each projection 1441 is slightly less than the height of two outer wall grooves 1243 of this diffuser 120, to be contained in this two outer walls groove 1243.This cooling stand 142 comprises a first side wall 1421, one second sidewalls 1422, and one the 3rd sidewall 1423; This second sidewall 1422 respectively with this first side wall 1421; And the 3rd sidewall 1423 is vertically continuous, this first side wall 1421, and the 3rd sidewall 1423 extends from the interior side direction center of this housing 144; And locate this second sidewall 1422, the height of the height of this second sidewall 1422 and this two projection 1441 remains basically stable.The outer surface of this second sidewall 1422 defines a plane, and its inner surface is provided with a radiating fin 1424, and this radiating fin 1424 can be a different shape, also can be one or more.This first side wall 1421 and the 3rd sidewall 1423 define a gap respectively so that two lugs 124 of this diffuser 120 pass respectively with this two projection 1441.

Comprise a led array 162 on this circuit board 160, with a heat dissipating layer 164, this led array 162 and this heat dissipating layer 164 are arranged at the both sides of this circuit board 160 respectively; This led array 162 comprises a plurality of LED; Its light-emitting area is towards this diffuser 120, and this heat dissipating layer 164 is corresponding with this heat radiation shell 140, and its width is less than the width of this circuit board; Adapt with second sidewall 1422 of this heat radiation shell 140, it is close to the bottom side of this circuit board 160.This heat dissipating layer 164 can be an insulating heat-conductive silica gel sheet 164, also can be other heat sink materials, and like thermally conductive gel pad PK605, thermally conductive gel pad PK95A etc. can play good heat-conducting effect.

In the process of assembling; The operator at first is attached at heat dissipating layer 164 on the circuit board 160; Again this circuit board 160 is positioned between two inboard wall grooves 1241 of two lugs 124 of this diffuser 120 afterwards; Its two ends are contained in respectively in two inboard wall grooves 1241, and the led array 162 on this circuit board 160 is towards this diffuser 120.Secondly; This diffuser 120 that will have this circuit board 160 is positioned on this heat radiation shell 140; The top, end of the housing 144 of this heat radiation shell 140 is positioned at two platforms, 126 places of this diffuser 120, and wherein, two outer wall grooves 1243 of this diffuser 120 are corresponding with two projections 1441 of this heat radiation shell 140 respectively; And be contained in it, so promptly accomplished the assembling of whole LED fluorescent tube 100.

Compared to prior art; The LED fluorescent tube 100 of the utility model directly is coated on the outer wall of diffuser 120 for the inwall of heat radiation shell 140; And diffuser 120 and heat radiation shell 140 are fixed together through a snap-in structure; Make diffuser 120 and heat radiation shell 140 form a general frame, so just improved the stability of whole fluorescent tube greatly.In addition; LED fluorescent tube 100 structures are that circuit board 160 directly is fixed on the fluorescent tube diffuser 120; Avoided circuit board 160 destruction or breakdown to be taken place, and then prevented the fluorescent tube conduction, in case unnecessary security incident takes place because of heat conduction need cause circuit board 160 insulating barriers.Further increase a heat dissipating layer 164 again in heat radiation shell 140 and circuit board 160 contact positions; Heat dissipating layer 164 fully closely contacts with heat radiation shell 140 with circuit board 160; Eliminated because the problem of the poor heat conduction that the unavoidable error of part processing is brought effectively improves LED fluorescent tube 100 thermal diffusivities.

The utility model LED fluorescent tube 100 is not limited to said structure; Wherein, Diffuser outer wall girth and heat radiation rack outer wall girth can be provided with equal sizes, also can distribute in different ratios, and in any case distribution all is fit to select for use the structure of this utility model to arrange in a word.

The above is merely the preferred embodiment of the utility model, and not in order to restriction the utility model, all any modifications of within the principle of the utility model, being done are equal to replacement and improvement etc. and all should comprise within the protection domain of the utility model.

Claims

1. LED fluorescent tube, it comprises a diffuser, a heat radiation shell and a circuit board, this diffuser is arranged on this heat radiation shell, and this circuit board is contained in this diffuser, and a plurality of LED are set on it, it is characterized in that: the bottom of this this diffuser of heat radiation shell coating.

2. LED fluorescent tube as claimed in claim 1; It is characterized in that: this heat radiation shell comprises a housing, and this housing inboard is provided with two symmetrical projections, and this diffuser comprises a shell; And two lugs that extend from these shell both ends, two ends of this two lug and this shell are defined a platform respectively.

3. LED fluorescent tube as claimed in claim 2 is characterized in that: the top, two ends of the housing of this heat radiation shell is positioned at two platform places of this diffuser.

4. LED fluorescent tube as claimed in claim 2 is characterized in that: two lugs of this diffuser comprise an outer wall groove respectively, and this each outer wall groove is corresponding with two projections of this heat radiation shell respectively, and accommodates it in inside grooves.

5. LED fluorescent tube as claimed in claim 2 is characterized in that: two lugs of this diffuser comprise an inboard wall groove respectively, and itself and this outer wall groove is adjacent, accommodate the two ends of this circuit board.

6. LED fluorescent tube as claimed in claim 2; It is characterized in that: this circuit board comprises a led array; With a heat dissipating layer, this led array and this heat dissipating layer are arranged at the both sides of this circuit board respectively, and this led array comprises a plurality of LED; Its light-emitting area is towards this diffuser, and this heat dissipating layer is corresponding with this heat radiation shell.

7. LED fluorescent tube as claimed in claim 6 is characterized in that: this heat dissipating layer is an insulating heat-conductive silica gel sheet.

8. LED fluorescent tube as claimed in claim 6 is characterized in that: this heat radiation shell further comprises a cooling stand, and this cooling stand is arranged at the inside of this housing, and extends along the length direction of this housing, and is one-body molded with this housing.

9. LED fluorescent tube as claimed in claim 8 is characterized in that: this cooling stand comprises a first side wall, one second sidewall; And one the 3rd sidewall, this second sidewall respectively with this first side wall, and the 3rd sidewall vertically links to each other; This first side wall, and the 3rd sidewall extends internally from the inboard of this housing, and locate this second sidewall; The height of this second sidewall is corresponding with this two projection, and this heat dissipating layer closely contacts with this second sidewall.