CN201425194Y

CN201425194Y - LED fluorescent tube

Info

Publication number: CN201425194Y
Application number: CN2009201329824U
Authority: CN
Inventors: 薛信燊; 王茂忠; 刘小凡
Original assignee: SHENZHEN ZHONGMING SEMICONDUCTOR LIGHTING CO Ltd
Current assignee: SHENZHEN ZHONGMING SEMICONDUCTOR LIGHTING CO Ltd
Priority date: 2009-06-19
Filing date: 2009-06-19
Publication date: 2010-03-17
Anticipated expiration: 2019-06-19

Abstract

The utility model discloses an LED fluorescent tube, which comprises a tube body, an LED light bar positioned in the tube body, end cap components positioned at the two ends of the tube body and adrive circuit in electric connection with the end cap components and the LED light bar, wherein the tube body comprises a radiating shade and a light-transmittable shade; the radiating shade comprises a heat conducting insulating casing and a radiating body positioned between the heat conducting insulating casing and the LED light bar. Due to the adoption of the heat conducting insulating casing,the high-voltage tests of the LED fluorescent tube from any positions outside all can pass. Therefore, the LED fluorescent tube is safe and reliable.

Description

A kind of LED fluorescent tube

Technical field

The utility model relates to LED (light emitting diode, Light Emitting Diode) technical field of lamps, more particularly, relates to a kind of LED fluorescent tube.

Background technology

The LED light fixture is as a kind of new type light source, it has, and volume is little, power consumption less, strong, the stability height of applicability, response time weak point, environmentally safe, multicolor luminous etc. advantage, be widely used in the illumination and decoration field.With the lamp of high-power LED as light source, it has advantages such as luminous efficiency height, energy-saving and environmental protection.And on the other hand, fluorescent lamp of the prior art causes mercury pollution easily after discarded, therefore, replaces fluorescent lamp of the prior art with the LED fluorescent tube and just seems comparatively urgent.LED fluorescent tube of the prior art mainly by the fluorescent tube body, be arranged at fluorescent tube body two ends end cap, be arranged at LED lamp bar in the fluorescent tube body, be connected in lamp pin in the end cap and the drive circuit between the LED lamp bar is constituted, described fluorescent tube body is made up of heat dissipating housing and diffuser.

Adopt the defective of the LED fluorescent tube of said structure to be, because heat dissipating housing is metal materials such as aluminium, safety coefficient is low.

In addition, during the work of LED light fixture, can produce a large amount of heats, there is the problem of weak heat-dissipating usually in the LED fluorescent tube in the prior art, and a large amount of accumulation of heat may be burnt drive circuit or LED fluorescent tube, so there is potential safety hazard.

The utility model content

Technical problem to be solved in the utility model is to provide a kind of safe and reliable LED fluorescent tube.

For solving the problems of the technologies described above, the technical solution of the utility model is: a kind of LED fluorescent tube is provided, comprise the fluorescent tube body, be positioned at the drive circuit that the LED lamp bar of fluorescent tube body, the end-cap assembly that is positioned at fluorescent tube body two ends and while are electrically connected with described end-cap assembly and LED lamp bar, described fluorescent tube body comprises heat dissipating housing and diffuser, and described heat dissipating housing comprises heat conductive insulating shell and the radiator between described heat conductive insulating shell and described LED lamp bar.

Like this,, carry out Hi-pot test from outside arbitrfary point and can both pass through owing to adopt the heat conductive insulating shell, safe and reliable.

Description of drawings

Fig. 1 is the perspective exploded view of the utility model one preferred embodiment;

Fig. 2 is a schematic side view of removing behind the end-cap assembly embodiment illustrated in fig. 1;

Fig. 3 is the perspective exploded view of middle end-cap assembly embodiment illustrated in fig. 1.

The specific embodiment

In order to make technical problem to be solved in the utility model, technical scheme and beneficial effect clearer,, the utility model is further elaborated below in conjunction with drawings and Examples.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.

Please refer to Fig. 1 and Fig. 2, be a preferred embodiment of the present utility model, this LED fluorescent tube comprises fluorescent tube body 1, is positioned at the LED lamp bar 2 of fluorescent tube body 1, is positioned at the end-cap assembly 3 at fluorescent tube body 1 two ends and the drive circuit (not shown) that is electrically connected with described end-cap assembly 3 and LED lamp bar 2 simultaneously, described fluorescent tube body 1 comprises heat dissipating housing 11 and diffuser 12, and described heat dissipating housing 11 comprises heat conductive insulating shell 111 and the radiator 112 between described heat conductive insulating shell 111 and described LED lamp bar 2.Like this,, carry out Hi-pot test from outside arbitrfary point and can both pass through owing to adopt heat conductive insulating shell 111, safe and reliable.

Below above-mentioned each part is described in detail respectively.

In the present embodiment, described heat conductive insulating shell 111 is the ceramic insulation shell, the ceramic insulation shell is formed by three sections, two sections of being positioned at the LED lamp tube ends are fixing by end-cap assembly 3, and the two ends that are positioned at the end in the middle of the LED fluorescent tube are provided with ledge structure, and be supported on two sections that are positioned at the LED lamp tube ends by described ledge structure, when the length of LED fluorescent tube hour, also can only adopt one section ceramic insulation shell.In addition, described heat conductive insulating shell 111 can also be other heat conductivility good insulation performance shells.Radiator 112 is made by aluminium, also can be made by the material that copper etc. has a good heat conductive performance certainly.

Described LED lamp bar 2 comprises lamp plate 21 and a plurality of LED lamp pearl 22 of arranging along described lamp plate 21 length directions, and described LED lamp pearl 22 is by soldering paste and described lamp plate 21 seamless combination.The color of LED lamp pearl 22 can be selected just white or be commercial white etc.Tin cream also claims solder(ing) paste, is grey or canescence lotion, and it has very strong cementability, heat-resisting quantity and superior thermal conductivity.Described radiator 112 inboard and described lamp plates 21 are by the adhesion of silica gel sheet, and described radiator 112 outsides and described heat conductive insulating shell 111 are inboard by the silica gel adhesion.Heat conduction silica gel sheet about its thermal conductivity factor 4-5, substitutes heat conductive silica gel with it, has heat conduction and insulation dual-use function, and easy to use, clean.Like this; between LED lamp pearl 22, lamp plate 21, radiator 112 and heat conductive insulating shell 111, just formed unimpeded heat dissipation channel; the heat that the LED fluorescent tube is produced in the course of the work distributes rapidly, has effectively protected the LED fluorescent tube, and prolongs its service life.

Please refer to Fig. 3, described end-cap assembly 3 comprises end cap 31 and the stitch 32 that is electrically connected with described drive circuit, and described end cap 31 is connected with described radiator 112 by screw 33.Change prior art and adopted the mode that is welded to connect.Need not get ready and easy to assembly, safe and reliable.In order to keep the associative perception of LED fluorescent tube, be provided with gag 34 in the outside of described screw 33.In the present embodiment, the LED fluorescent tube adopts built-in power, can directly be installed on the conventional fluorescent lamp support, need not to remove former lamp bracket circuit, and is easy to use.Thereby increased the stability of LED lamp luminescence, guaranteed luminous mass, prolonged the service life of LED fluorescent tube.

Described diffuser 12 is PC (Polycarbonate, a Merlon) photodiffusion material, can't see the LED luminous point from LED fluorescent tube outside like this, and light efficiency is even, and illuminating effect surpasses traditional fluorescent lamp.The c-shaped structure of the cross section of described diffuser 12, the inboard, two ends of described C shape structure is respectively equipped with a draw-in groove 121, and described heat conductive insulating shell 111 and described radiator 112 are by described draw-in groove 121 location.Be to realize, solid and reliable connection, between described radiator 112 and the described draw-in groove 121 correspondence position also be provided with can be engaged the hook part.

The above only is preferred embodiment of the present utility model; not in order to restriction the utility model; all any modifications of within spirit of the present utility model and principle, being done, be equal to and replace and improvement etc., all should be included within the protection domain of the present utility model.

Claims

1, a kind of LED fluorescent tube, comprise the fluorescent tube body, be positioned at the drive circuit that the LED lamp bar of described fluorescent tube body, the end-cap assembly that is positioned at described fluorescent tube body two ends and while are electrically connected with described end-cap assembly and LED lamp bar, described fluorescent tube body comprises heat dissipating housing and diffuser, it is characterized in that: described heat dissipating housing comprises heat conductive insulating shell and the radiator between described heat conductive insulating shell and described LED lamp bar.

2, LED fluorescent tube as claimed in claim 1 is characterized in that: described heat conductive insulating shell is the ceramic insulation shell.

3, LED fluorescent tube as claimed in claim 2 is characterized in that: described LED lamp bar comprises lamp plate and a plurality of LED lamp pearl of arranging along described lamp plate length direction, and described LED lamp pearl is by soldering paste and described lamp plate seamless combination.

4, as any described LED fluorescent tube of claim 1 to 3, it is characterized in that: described radiator is inboard to pass through the adhesion of silica gel sheet with described lamp plate, and the described radiator outside is inboard by the silica gel adhesion with described heat conductive insulating shell.

5, LED fluorescent tube as claimed in claim 1 is characterized in that: described end-cap assembly comprises end cap and the stitch that is electrically connected with described drive circuit, and described end cap is connected with described radiator by screw.

6, LED fluorescent tube as claimed in claim 5 is characterized in that: be provided with gag in the described screw outside.

7, LED fluorescent tube as claimed in claim 1, it is characterized in that: described diffuser is made by the PC photodiffusion material.

8, as claim 1 or 7 described LED fluorescent tubes, it is characterized in that: the c-shaped structure of the cross section of described diffuser, the inboard, two ends of described C shape structure is respectively equipped with a draw-in groove, and described heat conductive insulating shell and described radiator are by described draw-in groove location.