CN100538161C

CN100538161C - LED fluorescent tube

Info

Publication number: CN100538161C
Application number: CNB2007101239471A
Authority: CN
Inventors: 李旭亮
Original assignee: Dongguan Kingsun Optoelectronic Co Ltd
Current assignee: Shenzhen Qinshang Energy Technology Co Ltd
Priority date: 2007-10-16
Filing date: 2007-10-16
Publication date: 2009-09-09
Anticipated expiration: 2027-10-16
Also published as: CN101144587A

Abstract

The present invention relates to a lighting device, and more particularly to an LED fluorescent lamp. The LED fluorescent lamp tube comprises a columnar tube body, characterized in that the inner wall of the tube body has two protruding edges, the two protruding edges are arranged parallel to the axis of the tube body, and each edge has a groove on both sides. The inner wall of the tube body is provided with a reflective film and a diffusion film, which are tightly attached to the inner wall of the tube body and are clamped on the inner wall of the tube body through the groove. The present invention provides an LED fluorescent lamp with a light output mode similar to that of an existing fluorescent lamp and a high light output rate.

Description

The LED fluorescent tube

Technical field

The present invention relates to lighting device, relate in particular to a kind of LED fluorescent lamp.

Background technology

Compare with traditional incandescent lamp, fluorescent lamp is a hot cathode low pressure fluorescent-mercury lamp, has the advantage that heating is little, brightness is high, the life-span is long, in the quite long period of history, becomes the main flow of lighting source.Yet, to compare with the fluorescence fluorescent lamp, the LED lamp has the characteristics of longer, the high and low power consumption of light efficiency of life-span again.Existing LED fluorescent lamp all is provided with circuit board and led array in the body of fluorescent tube, it is unsatisfactory that existing LED fluorescent lamp is promoted, because the LED illuminator is that point is luminous, the LED fluorescent lamp go out optical mode and existing fluorescent lamp bright dipping pattern differentials is too big, do not meet people's use habit for a long time, such as the disclosed LED fluorescent lamp of Chinese utility model patent document CN2908989Y, employing be exactly this technical scheme.

Summary of the invention

The objective of the invention is to overcome above-mentioned the deficiencies in the prior art part and provide that a kind of to go out optical mode similar to existing fluorescence fluorescent lamp, and the high LED fluorescent lamp of light emission rate.

Purpose of the present invention can be achieved through the following technical solutions:

The LED fluorescent tube, the body that comprises column, it is characterized in that, inboard wall of tube body has the rib of two projections, article two, the axis parallel setting of the rib of projection and body, two sides of every rib have a groove respectively, and inboard wall of tube body is provided with reflectance coating and diffusion barrier, and reflectance coating and diffusion barrier are close to inboard wall of tube body and are arranged in inboard wall of tube body by groove.

The LED fluorescent tube is characterized in that, the cross section of body is rounded, and the cross section of reflectance coating and diffusion barrier is all curved, and the arc length of diffusion barrier is greater than the arc length of reflectance coating.

The LED fluorescent tube is characterized in that, the cross section ovalize of body, and the cross section of reflectance coating and diffusion barrier is all curved, and the arc length of diffusion barrier is greater than the arc length of reflectance coating.

The LED fluorescent tube is characterized in that, two ends of body are provided with a LED illuminator respectively; The exiting surface of two LED illuminators is provided with in opposite directions.

The LED fluorescent tube is characterized in that, two LED illuminator the place aheads are provided with secondary optical lens respectively, and secondary optical lens has an incidence surface that is arranged with, LED illuminator butt incidence surface.

The LED fluorescent tube is characterized in that, two LED illuminators are separately positioned in the reflector, and the reflective surface of two reflectors is provided with in opposite directions.

The LED fluorescent tube, it is characterized in that, two LED illuminators are separately positioned on two aluminium bases, the one side that aluminium base is not provided with the LED illuminator connects a radiating block, radiating block is arranged on hole within the heat dissipating ring with interference fit, heat dissipating ring is connected with an end cap by screw, and end cap is connected to the end of described body; Led drive circuit is arranged at hole within the heat dissipating ring.

The LED fluorescent tube is characterized in that, the body middle part also is provided with a two-sided reflecting piece, and two reflective surfaces of two-sided reflecting piece are respectively towards two LED illuminators.

The LED fluorescent tube is characterized in that, the cross section of body is rounded, and the cross section of reflectance coating and diffusion barrier is all curved, and the arc length of diffusion barrier is greater than the arc length of reflectance coating; Two ends of body are provided with a LED illuminator respectively; The exiting surface of two LED illuminators is provided with in opposite directions; Two LED illuminators are separately positioned in the reflector, and the reflective surface of two reflectors is provided with in opposite directions; Two LED illuminators are separately positioned on two aluminium bases, the one side that aluminium base is not provided with the LED illuminator connects a radiating block, radiating block is arranged on hole within the heat dissipating ring with interference fit, and heat dissipating ring is connected with an end cap by screw, and end cap is connected to the end of described body; Led drive circuit is arranged at hole within the heat dissipating ring; The body middle part also is provided with a two-sided reflecting piece, and two reflective surfaces of two-sided reflecting piece are respectively towards two LED illuminators.

The LED fluorescent tube is characterized in that, the cross section ovalize of body, and the cross section of reflectance coating and diffusion barrier is all curved, and the arc length of diffusion barrier is greater than the arc length of reflectance coating; Two ends of body are provided with a LED illuminator respectively; The exiting surface of two LED illuminators is provided with in opposite directions; Two LED illuminators are separately positioned in the reflector, and the reflective surface of two reflectors is provided with in opposite directions; Two LED illuminators are separately positioned on two aluminium bases, the one side that aluminium base is not provided with the LED illuminator connects a radiating block, radiating block is arranged on hole within the heat dissipating ring with interference fit, and heat dissipating ring is connected with an end cap by screw, and end cap is connected to the end of described body; Led drive circuit is arranged at hole within the heat dissipating ring; The body middle part also is provided with a two-sided reflecting piece, and two reflective surfaces of two-sided reflecting piece are respectively towards two LED illuminators.

The LED fluorescent tube that the present invention relates to, the column inboard wall of tube body is provided with reflectance coating and diffusion barrier, select the exiting surface of the one side of diffusion barrier when using as the LED fluorescent tube, compare with existing LED fluorescent tube, because be provided with diffusion barrier in body, the optical mode that goes out of LED fluorescent lamp more approaches existing fluorescence fluorescent lamp, and is provided with reflective membrane at the opposite face of diffusion barrier, compared with prior art, the light emission rate of LED fluorescent lamp is higher.

Description of drawings

Fig. 1 is the exploded view of the body of one embodiment of the invention.

Fig. 2 is the front view of first embodiment of the invention.

Fig. 3 is the A-A cutaway view among Fig. 2.

Fig. 4 is the B-B cutaway view among Fig. 3.

Fig. 5 is the side view of first embodiment of the invention.

Fig. 6 is a C-C profile among Fig. 3.

Fig. 7 is the partial perspective view of first embodiment of the invention.

Fig. 8 is the decomposing schematic representation of first embodiment of the invention.

Fig. 9 is a D place partial enlarged drawing among Fig. 3.

Figure 10 is an E place partial enlarged drawing among Fig. 4.

Figure 11 is a F place partial enlarged drawing among Fig. 8.

Figure 12 is a G place partial enlarged drawing among Fig. 8.

The specific embodiment

The invention will be further described below in conjunction with accompanying drawing.

First embodiment of the present invention is a kind of LED fluorescent tube, referring to figs. 1 to Figure 12, the LED fluorescent tube comprises the body 101 of column, also comprise two LED illuminators 107, two LED illuminators 107 are separately positioned on two ends of body 101, and the exiting surface of two LED illuminators 107 is provided with in opposite directions; A two-sided reflecting piece 113 is set in the body 101, and two-sided reflecting piece 113 is arranged between two LED illuminators 107; Body 101 2 ends also are respectively equipped with led drive circuit 110 and the heat abstractor that works alone.The cross section of body 101 is circular, and reflecting piece 113 also is circular; Heat abstractor in the present embodiment is the heat dissipating ring 103 of hollow, and the outer wall of heat dissipating ring 103 is provided with the heat radiation wing, and described drive circuit 110 is arranged on heat dissipating ring 103 inside; Two light reflecting piece 113 are arranged on the symmetrical centre of two LED illuminators 107; Body 101 2 ends also are respectively equipped with a reflector 108, the heart among LED illuminator 107 is arranged at the bottom of 108 glasss of the reflectors; Two-sided reflecting piece 113 has two parallel reflective planes.With reference to figure 1, Fig. 8 and Figure 11, body 101 inwalls of column have the rib 1011 of two projections, article two, the rib 1011 of projection and the axis parallel setting of body 101, two sides of every rib 1011 have a groove respectively, body 101 inwalls are provided with reflectance coating 111 and diffusion barrier 112, and reflectance coating 111 and diffusion barrier 112 are close to body 101 inwalls and are arranged in body 101 inwalls by groove; The cross section of reflectance coating 111 and diffusion barrier 112 is all curved, and the arc length of diffusion barrier 112 is greater than the arc length of reflectance coating 111; In the present embodiment, two ends of body 101 only are provided with a LED illuminator 107 respectively, and two end structure symmetries, only be illustrated below with regard to an end structure, LED illuminator 107 is arranged on the aluminium base 106, with reference to figure 9,10,11, aluminium base 106 the place aheads are provided with reflector 108, and aluminium base 106, LED illuminator 107, reflector 108 all are arranged in the end cap 102; The end of heat dissipating ring 103 endoporus connects a radiating block 109 by interference fit, and in the present embodiment, heat dissipating ring 103 and radiating block 109 are aluminum component, certainly, also can make of aluminium alloy or other hot good conductor; Refer again to Fig. 9,10,11, end cap 102 and aluminium base 106 are connected heat dissipating ring 103 ends by screw, and in the present embodiment, screw is connected with radiating block 109; For heat radiation better, aluminium base 106 be with forming contact-making surface between the radiating block 109, in case of necessity, can give with the faying face of radiating block 109 at aluminium base 106 and be coated with heat-conducting glue, to reach better heat-conducting effect.Reflector 108 is arranged in the end cap 102 by adhesive means (can certainly be welding or by mechanical connection manners such as securing members); The other end of heat dissipating ring 103 opposite end of end cap 102 (connect) connects capping 105, two strip electrodes 104 and is arranged in capping 105, two strip electrodes 104 and heat dissipating ring 103 interior led drive circuits 110 and is electrically connected; Be connected by screw between capping 105 and the heat dissipating ring 103; Led drive circuit 110 is connected with the LED illuminator 107 that is arranged at aluminium base 106; In the present embodiment, end cap 102 is provided with button bit, and body 101 ends are provided with and the corresponding perforate of button bit, and end cap 102 is connected with body 101 by the mode of snapping; With reference to Figure 12, in the present embodiment, two-sided reflecting piece 113 is to insert body 101 by an opening on the body 101, for the mechanical performance of body 101 not because of opening weakens, pack into after the two-sided reflecting piece 113, can also opening be sealed with glue; The LED luminescence technology itself is a mature technology, and led drive circuit 110, aluminium base 106, LED illuminator 107 can adopt commercial product.

Second embodiment of the present invention also is a kind of LED fluorescent tube, be with the difference of first embodiment of the invention, the cross section of body is oval, accordingly, reflecting piece also is oval, described heat abstractor is the oval heat dissipating ring of hollow, and the outer wall of heat dissipating ring is provided with the heat radiation wing, and described drive circuit is arranged on heat dissipating ring inside; Certainly can make hexagon or other shape; And two light reflecting piece are apart from the distance of a LED illuminator, greater than the distance of two light reflecting piece apart from another illuminator; The place ahead of the exiting surface of LED illuminator is provided with secondary optical lens, replaces the reflector among first embodiment, and secondary optical lens is used to control light direction, makes to penetrate light more equably to the body scattering; The reflective plane that is not both two-sided reflecting piece with another point of first embodiment is the cambered surface of projection, so that reverberation is to the body directional scattering.

Claims

1. LED fluorescent tube, including a columnar tube body, is characterized in that the inner wall of the tube has two protruding ribs, the two protruding ribs are arranged parallel to the axis of the tube body, and each side of the ribs has a groove respectively. The inner wall of the tube is provided with a reflective film and a diffusion film, the reflective film and the diffuser film are closely attached to the inner wall of the tube and are clamped on the inner wall of the tube through a groove; it is characterized in that an LED luminous body is respectively arranged at two ends of the tube; The light-emitting surfaces of the LED illuminants are arranged facing each other; the two LED illuminants are respectively arranged on two aluminum substrates, and the side of the aluminum substrate without the LED illuminants is connected to a heat dissipation block, and the heat dissipation block is arranged in a heat dissipation ring in an interference fit manner hole, the heat dissipation ring is connected with an end cover through screws, and the end cover is clamped on the end of the tube body; the LED driving circuit is arranged in the inner hole of the heat dissipation ring.

2. The LED fluorescent tube according to claim 1, wherein the cross section of the tube body is circular, the cross sections of the reflective film and the diffusion film are arc-shaped, and the arc length of the diffusion film is longer than that of the reflective film.

3. The LED fluorescent tube according to claim 1, wherein the cross section of the tube body is elliptical, the cross sections of the reflective film and the diffuser film are both arc-shaped, and the arc length of the diffuser film is longer than that of the reflective film.

4. The LED fluorescent tube according to claim 1, characterized in that secondary optical lenses are respectively arranged in front of the two LED illuminants, the secondary optical lenses have a concave light incident surface, and the LED illuminants touch the light incident surface .

5. The LED fluorescent tube according to claim 1, wherein the two LED illuminants are respectively arranged in a reflective cup, and the reflective surfaces of the two reflective cups are arranged facing each other.

6. The LED fluorescent tube according to any one of claims 4 and 5, characterized in that a double-sided reflective sheet is arranged in the middle of the tube body, and the two reflective surfaces of the double-sided reflective sheet face the two LED illuminants respectively.

7. The LED fluorescent tube according to claim 1, wherein the cross section of the tube body is circular, the cross sections of the reflective film and the diffusion film are arc-shaped, and the arc length of the diffusion film is longer than that of the reflective film; The two LED luminous bodies are respectively arranged in a reflective cup, and the reflective surfaces of the two reflective cups are arranged facing each other; a double-sided reflective sheet is also arranged in the middle of the tube body, and the two reflective surfaces of the double-sided reflective sheet face the two LED luminous bodies respectively.

8. The LED fluorescent tube according to claim 1, wherein the cross section of the tube body is elliptical, the cross sections of the reflective film and the diffusion film are both arc-shaped, and the arc length of the diffusion film is longer than that of the reflective film; The two LED luminous bodies are respectively arranged in a reflective cup, and the reflective surfaces of the two reflective cups are arranged facing each other; a double-sided reflective sheet is also arranged in the middle of the tube body, and the two reflective surfaces of the double-sided reflective sheet face the two LED luminous bodies respectively.