CN103867991A

CN103867991A - Led lamp tube

Info

Publication number: CN103867991A
Application number: CN201210540385.1A
Authority: CN
Inventors: 不公告发明人
Original assignee: XI'AN JUNXIE PHOTOELECTRIC SCIENCE & TECHNOLOGY Co Ltd
Current assignee: XI'AN JUNXIE PHOTOELECTRIC SCIENCE & TECHNOLOGY Co Ltd
Priority date: 2012-12-13
Filing date: 2012-12-13
Publication date: 2014-06-18

Abstract

An LED lamp tube comprises a glass tube, lamp bases arranged at two ends and an LED lamp strip arranged in the inside, wherein the inner wall of the glass tube is coated with a brightness-improving heat radiation film, and the LED lamp strip is bonded and fixed on the inner wall of the glass tube through a high-thermal-conductivity adhesive. The brightness-improving heat radiation film is an aluminum coated layer or a frosted heat-conducting brightness-improving adhesive layer or a brightness-improving heat radiation nano adhesive layer. The LED lamp strip comprises a substrate, and a plurality of LED light sources are welded on the substrate, or an integrated light source composed by an LED chip is packaged on the substrate. A drive power source module is further arranged on the LED lamp strip. The light emergence efficiency and a light emergence angle of the LED lamp tube are improved/increased, the irradiation area is large, the glare and light spot problems existing in the LED lamp tube are solved, heat produced by an LED is transferred to the whole glass lamp tube through the substrate, the heat radiation area is increased remarkably, the heat radiation speed of the LED lamp tube is improved, the LED lamp tube can be applicable to a lamp holder of a traditional fluorescent lamp, the universality is greatly improved, and the replacement and usage cost is reduced.

Description

LED fluorescent tube

Technical field

The present invention relates to a kind of LED fluorescent tube.

Background technology

Fluorescent lamp is the conventional lightings of people, traditional fluorescent lamp can be filled with fluorescent material, wherein contains multiple poisonous heavy metal, very large to human body and ecological environment harm in the time manufacturing and use, in addition the power consumption of fluorescent lamp is large and service life is short, often can not meet people's user demand; In the market, traditional fluorescent lamp is eliminated gradually, is replaced by LED fluorescent tube, and compared with traditional fluorescent lamp, LED fluorescent tube power consumption is low, and the life-span is long.

At present, because LED caloric value is large, known LED fluorescent tube is for solving its heat dissipation problem, and basic structure is that LED is fixed on circuit board, and when LED is luminous, the heat of generation is delivered on lamp housing by circuit board, then is distributed by lamp housing.As Chinese patent literature CN 201141526 discloses a kind of Novel LED daylight lamp on October 29th, 2008, its structure is multiple LED lamps by aluminium base or the printed circuit board (PCB) welding set LED of formation lamp plate in aggregates, and LED lamp plate is inserted on two side bayonet slots of Mold for Plastics bar that cross section is semicircle or large semicircle or stretching aluminium alloy heat radiation mould bar, form lamp plate assembly, control circuit board is close to LED lamp plate below by the isolation of fibrous insulation sheet, and Tibetan is located at Mold for Plastics bar or stretching aluminium alloy heat radiation mould bar inside, lamp plate assembly is inserted in glass lamp, utilize the final LED of formation of crown top of burner encapsulation fluorescent lamp at two ends.

LED tube tube body structure has two kinds on the market at present: one is plastic lamp housing, and lamp housing front is transparent surface, inner card device, circuit board, and when LED is luminous, heat passes to lamp housing by circuit board, then is distributed by lamp housing; Another is that aluminium profile structure and upper casing are that light-passing plastic tubing forms by drain pan, and circuit board is arranged on aluminium, and the heat producing when LED is luminous is delivered on drain pan aluminium section bar, then by aluminium, dissipation of heat is gone out.

Wherein the first adopts all-plastic pipe, and radiating effect is poor, and translucent effect is bad; The second lamp housing, though good heat dissipation effect, its cost is high, and the light absorption of upper casing plastic pipe is strong, printing opacity rate variance.

Summary of the invention

Object of the present invention aims to provide a kind of simple in structure, good heat dissipation effect, low cost of manufacture, LED light source is luminous, light extraction efficiency is high, lighting effect is good LED fluorescent tube, to overcome weak point of the prior art.

By a kind of LED fluorescent tube of this object design, comprise glass tube, be arranged on the lamp holder at its two ends, and the LED lamp bar setting within it, its architectural feature is that the inwall of glass tube is coated with the heat dissipation film that adds lustre to, and LED lamp bar is adhesively fixed on the inwall of glass tube by high heat conduction bonded adhesives.

The described heat dissipation film that adds lustre to be aluminium coated or the heat conduction of frosted shape add lustre to glue-line, maybe can add lustre to heat radiation nanometer glue-line.

Described LED lamp bar comprises that one is adhesively fixed on the substrate on glass tube, is welded with several LED light sources in parallel or be connected in series on substrate, or, on substrate, be packaged with the integrated optical source that LED chip in parallel by several or that be connected in series forms.

On described LED lamp bar, being also provided with can driving LED light source or the luminous driving power module of LED chip.

Described driving power module is electrically connected with lamp holder by the wire arranging on substrate.

Described LED lamp bar is one-part form or segmented.

The present invention compared with prior art has the following advantages:

1) the present invention adopts integrated glass tube, and glass tube is higher than light transmittance and the refractive index of conventional PC pipe, has greatly improved the light extraction efficiency of LED fluorescent tube, increases more than 5% than conventional PC pipe brightness;

2) on the inwall of glass tube, be coated with one deck heat dissipation film that adds lustre to, it is add lustre to glue-line or have the nanometer glue-line of the heat sinking function that adds lustre to of aluminium coated, the heat conduction of frosted shape.It not only strengthens the light mixing effect of LED fluorescent tube, and solves the dazzle of LED fluorescent tube existence and the problem of some light, can improve the heat conduction speed of glass light simultaneously, helps LED heat radiation;

3) LED lamp bar is adhesively fixed on glass tube by high heat conduction bonded adhesives, and the heat that LED produces is delivered on whole piece glass lamp by its substrate, increases considerably area of dissipation, improves the radiating rate of LED fluorescent tube;

4) on the substrate of LED lamp bar, driving power module is installed, makes the lamp socket of LED fluorescent tube applicable to traditional fluorescent lamp, without external power supply again, greatly increase its versatility, and reduce change, use cost;

5) LED lamp bar is fixed on the inwall of glass tube, and whole piece glass tube all can bright dipping, makes the overall rising angle of LED fluorescent tube large, and irradiated area is large.

Accompanying drawing explanation

The general assembly structural representation of Fig. 1 one embodiment of the invention.

Fig. 2 is the sectional view of Fig. 1.

Fig. 3 is the assembly structure schematic diagram of one embodiment of the invention LED lamp bar and lamp holder.

Fig. 4 is the assembly structure schematic diagram of further embodiment of this invention LED lamp bar and lamp holder.

The specific embodiment

Below in conjunction with drawings and Examples, the invention will be further described.

The first embodiment

Referring to Fig. 1-Fig. 3, this LED fluorescent tube, comprises glass tube 1, be arranged on the lamp holder 8 at its two ends, with the LED lamp bar setting within it, the inwall of its glass tube 1 is coated with the heat dissipation film 2 that adds lustre to, and LED lamp bar is adhesively fixed on the inwall of glass tube 1 by high heat conduction bonded adhesives 6.Add lustre to heat dissipation film 2 for aluminium coated or the heat conduction of frosted shape add lustre to glue-line, can the add lustre to nanometer glue-line of heat radiation maybe.LED lamp bar comprises that one is adhesively fixed on the substrate 3 on glass tube 1, on substrate 3, be welded with the LED light source 4 that several parallel connections (or series connection) connect, described LED light source 4 is light emitting diode, and its pin 7 is welded on the pad 10 of substrate 3 by Xi Si or tin cream.On LED lamp bar, being also provided with can driving LED light source 4 or the luminous driving power module 5 of LED chip 11.Driving power module 5 is electrically connected with lamp holder 8 by the wire 9 of welding on the pad 10 of substrate 3.The external 220V alternating current of lamp holder 8,220V alternating current is received in driving power module 5,220V alternating current is transferred to low-voltage DC, power again to LED light source 4, make it luminous, make its lamp socket applicable to traditional fluorescent lamp, without external power supply again, greatly increase its versatility, and reduce replacing, use cost.

Substrate 3 is metal substrate, the metals such as available aluminium or copper are made, the spontaneous curing under normal temperature condition of high heat conduction bonded adhesives 6, and make substrate 3 and glass tube 1 bonding firmly, the heat that the heat dissipation film 2 that adds lustre on glass tube 1 produces while making the work of LED lamp bar is delivered to rapidly whole piece glass tube 1, dispels the heat, and strengthens the light mixing effect of LED fluorescent tube, and solve the dazzle of LED fluorescent tube existence and the problem of some light, improve light emission rate simultaneously.

The LED lamp bar of the present embodiment is segmented, be divided into two sections of left and right, two sections of LED lamp bars are separately positioned on the right and left of glass tube 1, the lamp holder 8 at glass tube 1 two ends is separately to two sections of LED lamp bar power supplies, can reduce the load current of driving power module 5, reduce the cost of manufacture of required driving power module 5.

Described LED lamp bar also can adopt one-part form, and its need one side lamp head power supply, is applicable to the LED fluorescent tube that low brightness of illumination needs.

The second embodiment

Referring to Fig. 4, this LED fluorescent tube, is to be packaged with on the substrate 3 of described LED lamp bar with the main distinction of the first embodiment the integrated optical source that the LED chip 11 that is connected by several parallel connections (or series connection) forms.LED chip 11 is electrically connected to by metal wire 13 on the energising pad 10 of substrate 3, in the light-emitting area 12 arranging at the corresponding LED chip 11 of substrate 3, be filled with fluorescent material glue-line 14, fluorescent material glue-line 14 covers on LED chip 11, and metal wire 13 is wrapped, driving power module 5 can be powered to LED chip 11, makes LED chip 11 luminous.Other do not state part, with the first embodiment, no longer repeat.

Claims

1. a LED fluorescent tube, comprise glass tube (1), be arranged on the lamp holder (8) at its two ends, with the LED lamp bar setting within it, the inwall that it is characterized in that glass tube (1) is coated with the heat dissipation film (2) that adds lustre to, and LED lamp bar is adhesively fixed on the inwall of glass tube (1) by high heat conduction bonded adhesives (6).

2. LED fluorescent tube according to claim 1, the heat dissipation film (2) that adds lustre to described in it is characterized in that is aluminium coated or the heat conduction of frosted shape add lustre to glue-line, can the add lustre to nanometer glue-line of heat radiation maybe.

3. LED fluorescent tube according to claim 1 and 2, it is characterized in that described LED lamp bar comprises that one is adhesively fixed on the substrate (3) on glass tube (1), on substrate (3), be welded with several LED light sources (4) in parallel or be connected in series, or, on substrate (3), be packaged with the integrated optical source that LED chip (11) in parallel by several or that be connected in series forms.

4. LED fluorescent tube according to claim 3, it is characterized in that being also provided with on described LED lamp bar can driving LED light source (4) or the luminous driving power module (5) of LED chip (11).

5. LED fluorescent tube according to claim 4, is characterized in that described driving power module (5) is electrically connected with lamp holder (8) by the upper wire (9) arranging of substrate (3).

6. LED fluorescent tube according to claim 5, is characterized in that described LED lamp bar is one-part form or segmented.