CN201606705U

CN201606705U - LED lamp tube

Info

Publication number: CN201606705U
Application number: CN2010200562843U
Authority: CN
Inventors: 刘昌贵
Original assignee: Individual
Current assignee: Individual
Priority date: 2010-01-07
Filing date: 2010-01-07
Publication date: 2010-10-13
Anticipated expiration: 2020-01-07

Abstract

The embodiment of the utility model discloses an LED lamp tube. The LED lamp tube is characterized in that: the LED lamp tube comprises an arc-shaped metal profile on which a clamping groove is arranged, a flexible PCB with the bending radian consistent with that of the metal profile is buckled on the clamping groove in a clamping manner, an LED light source is welded on the flexible PCB, and a light-transmission lampshade is arranged above the metal profile. The provided LED lamp tube has good radiating property, and the secondary light distributing effect of an LED is good as well.

Description

A kind of LED fluorescent tube

Technical field

The utility model relates to electronic applications, relates in particular to a kind of LED fluorescent tube.

Background technology

The huge advantage of the energy-saving and environmental protection that led light source had, make it aspect commercial lighting, have fabulous application prospect, and the LED fluorescent tube is a product the most widely in the commercial lighting, Fig. 1 and Fig. 2 show the profile of LED fluorescent tube commonly used in the market, as seen from the figure, the LED fluorescent tube generally include the bottom curved aluminium profile 10, be buckled in the printed circuit board (PCB) (PCB on the described curved aluminium profile 10, Printed CircuitBoard) plate 11, the transparent lamp shade 13 that is welded on the led light source 12 on the described pcb board and covers on curved aluminium profile 10 tops.Generally, the heat of led light source generation dispels the heat by the aluminium section bar 10 that pcb board exports to the bottom.But from Fig. 1-Fig. 2 as can be seen, the pcb board level in the present LED fluorescent tube is installed in the fluorescent tube of arc, described pcb board or will not the aluminium plate surface contact, perhaps contact with the aluminium plate level, facts have proved that its radiating effect is not good.In addition, pcb board is to lie in a horizontal plane in the secondary light-distribution that also is unfavorable for light source in the LED fluorescent tube.

The utility model content

The utility model embodiment technical problem to be solved is, a kind of LED fluorescent tube is provided, and thermal diffusivity is good, and the secondary light-distribution of LED is effective.

Concrete, a kind of LED fluorescent tube that the utility model provides, comprise: a curved shape, described shape is provided with draw-in groove, buckle has the flexible PCB plate consistent with the crooked radian of described shape on the described draw-in groove, be welded with led light source on the described flexible PCB plate, described shape top is equipped with transparent lamp shade.

Preferable, the opposite face that welds led light source at described pcb board posts the layer of metal thermal conductive belt.

Preferable, described pcb board is two-sided deposited copper pcb board.

LED fluorescent tube provided by the utility model includes a curved shape, and the pcb board that is welded with led light source is buckled on the described shape in the crooked radian mode consistent with the shape crooked radian, because pcb board and shape are curved, therefore increased area of dissipation, make the thermal diffusivity of LED fluorescent tube better with respect to the prior art scheme, in addition, the arcwall face of pcb board and shape has constituted the secondary light-distribution face, make the secondary light-distribution better effects if of led light source, in addition, the pcb board structure of arc makes led light source farther with respect to prior art apart from the distance of transparent lamp shade, can increase effective mixed light of lampshade, and reduces dazzle.

Description of drawings

In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, to do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below, apparently, accompanying drawing in describing below only is embodiment more of the present utility model, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.

Fig. 1 is the cutaway view of existing a kind of LED fluorescent tube;

Fig. 2 is the cutaway view of existing another kind of LED fluorescent tube;

Fig. 3 is an example structure schematic diagram of LED fluorescent tube of the present utility model;

Fig. 4 is an embodiment cross-sectional view of flexible PCB plate of the present utility model;

Fig. 5 is the another kind of embodiment cross-sectional view of the utility model flexible PCB plate;

Fig. 6 is another example structure schematic diagram of LED fluorescent tube of the present utility model.

The specific embodiment

Below in conjunction with the accompanying drawing among the utility model embodiment, the technical scheme among the utility model embodiment is clearly and completely described.

LED fluorescent tube provided by the utility model includes a curved shape, and the pcb board that is welded with led light source is buckled on the described shape in the crooked radian mode consistent with the shape crooked radian, because pcb board and shape are radian, therefore increased area of dissipation, make the thermal diffusivity of LED fluorescent tube better with respect to the prior art scheme, in addition, the arcwall face of pcb board and shape has constituted the secondary light-distribution face, make the secondary light-distribution better effects if of led light source, in addition, the pcb board structure of arc makes led light source farther with respect to prior art apart from the distance of transparent lamp shade, can increase effective mixed light of lampshade, and reduces dazzle.

One example structure of LED fluorescent tube of the present utility model as shown in Figure 3, comprise that curved shape 40, a described shape 40 is provided with draw-in groove 401, buckle has the flexible PCB plate 41 consistent with the crooked radian of described shape 40 on the described draw-in groove 401, be welded with led light source 42 on the described flexible PCB plate 41, described shape 40 tops are equipped with transparent lamp shade 43.In the specific implementation, after being anchored to described flexible PCB integrated circuit board on the described shape, because the crooked radian of flexible PCB plate is consistent with described shape, and because the screen resilience of pcb board self, make described pcb board to fit good with the cambered surface of shape, the heat of led light source can be given described shape by the pcb board heat conduction of described arc like this, is outwards dispelled the heat by shape.Simultaneously, curved pcb board has formed the secondary light-distribution face of led light source, has reached to be the effect of led light source secondary light-distribution.In addition, the pcb board structure of arc makes led light source farther with respect to prior art apart from the distance of transparent lamp shade, can increase effective mixed light of lampshade, and reduces dazzle.Further, but described shape can be heat conductive metal such as aluminium, copper material.Described flexible PCB plate can be two-sided deposited copper pcb board, and as shown in Figure 4, the structure of two-sided deposited copper pcb board can comprise from top to bottom successively applies copper face 411 (welding led light source 42 on it), insulating barrier 412, deposited copper face 413.

In other embodiment of the present utility model,, as shown in Figure 5, can on the flexible PCB plate, stick layer of metal thermal conductive belt 416 for better the heat of led light source being conducted.Metal heat-conducting band 416 can be affixed on the one side that pcb board does not weld led light source by the mode of bonding or soldering.As shown in Figure 5, the two-sided deposited copper flexible PCB plate that comprises the metal heat-conducting band comprises and applies copper face 411 (welding led light source 42 it on), insulating barrier 412, deposited copper face 413 and metal heat-conducting band 416.

Can be provided with according to the different demands to the secondary light-distribution curvature of led light source at the arc of the shape of LED fluorescent tube of the present utility model, the radian of shape and pcb board contact-making surface is less than the radian shown in Fig. 3 among the embodiment of LED fluorescent tube of the present utility model as shown in Figure 6.Therefore, LED fluorescent tube of the present utility model can be arranged to have the arc of different curvature according to the different secondary light distribution requirements of led light source, can realize various secondary light-distribution effects.

Above disclosed only is the utility model preferred embodiment, can not limit the interest field of the utility model certainly with this, and therefore the equivalent variations of being done according to the utility model claim still belongs to the scope that the utility model is contained.

Claims

1. LED fluorescent tube, it is characterized in that, comprise: a curved shape, described shape is provided with draw-in groove, buckle has the flexible PCB plate consistent with the crooked radian of described shape on the described draw-in groove, be welded with led light source on the described flexible PCB plate, described shape top is equipped with transparent lamp shade.

2. LED fluorescent tube as claimed in claim 1 is characterized in that, the opposite face that welds led light source at described pcb board posts the layer of metal thermal conductive belt.

3. LED fluorescent tube as claimed in claim 1 or 2 is characterized in that, described pcb board is two-sided deposited copper pcb board.