CN201539753U

CN201539753U - LED lamp tube

Info

Publication number: CN201539753U
Application number: CN2009202381695U
Authority: CN
Inventors: 谢景森
Original assignee: Dongguan Yijia Photoelectricity Science & Technology Co Ltd
Current assignee: Dongguan Yijia Photoelectricity Science & Technology Co Ltd
Priority date: 2009-10-30
Filing date: 2009-10-30
Publication date: 2010-08-04
Anticipated expiration: 2019-10-30

Abstract

The utility model relates to the technical field of lamp tubes, in particular to an LED lamp tube, which comprises a tube body, an elongated PCB fixed in the tube body, lamp caps arranged at two ends of the tube body and a plurality of LED chips. Power contact pins are fixed on the lamp caps and electrically connected with the PCB, the LED chips are packaged and fixed on the PCB and electrically connected with the same, the tube body consists of a transparent cover and a radiating aluminum tube, the transparent cover is fixed at the top end of the radiating aluminum tube, and the PCB is fixed between the transparent cover and the radiating aluminum tube. The LED lamp tube is fine in radiating effect and can prolong service life of the LED chips, and the PCB can be small in volume, thereby bringing more convenience for installation and use.

Description

A kind of LED fluorescent tube

Technical field:

The utility model relates to the fluorescent tube technical field, relates in particular to a kind of LED fluorescent tube.

Background technology:

Because LED (Light Emitting Diode, light emitting diode) long service life, energy consumption is low, energy savings is remarkable, and LED has been widely used in the daily life as light source, as the LED fluorescent tube, it has replaced traditional fluorescent tube gradually, begins to be widely used in room lighting.Existing LED fluorescent tube mainly by body, be fixed on pcb board (printed circuit board (PCB)) in the body, be welded on a plurality of LED on the pcb board, the lamp holder that is arranged at the body two ends forms, pcb board is electrically connected with the LED lamp, be fixed with power pin on the lamp holder, power pin is electrically connected with pcb board, pcb board is connected with external power receptacle by power pin, for the LED lamp provides power supply, when the LED lamp is luminous, light can see through body and shine out, wherein, the body of LED fluorescent tube is plastic, transparent pipe or glass transparent pipe.But this LED fluorescent tube can produce a large amount of heats in luminous, and this LED fluorescent tube does not have to be provided with the heat abstractor that is specifically designed to distribute heat, and the heat that LED is produced can't distribute in time, causes shorten the service life of light emitting diode; And it must weld a fairly large number of light emitting diode, just can reach the brightness that general illumination needs, and has increased the volume of LED fluorescent tube, is unfavorable for installing and using.

The utility model content:

The purpose of this utility model is exactly the deficiency that exists at prior art and a kind of good heat dissipation effect, LED fluorescent tube that volume is little are provided.

To achieve these goals, the technical solution adopted in the utility model is:

It comprises body, is fixed on pcb board, the lamp holder that is arranged at the body two ends, a plurality of led chip of the strip in the body, be fixed with power pin on the lamp holder, power pin is electrically connected with pcb board, and a plurality of led chip encapsulation are fixed on the pcb board, and led chip is electrically connected with pcb board; Described body is made up of translucent cover, heat radiation aluminum pipe, and translucent cover is fixed on the top of heat radiation aluminum pipe, and pcb board is fixed between translucent cover and the heat radiation aluminum pipe.

Described a plurality of led chip equidistantly is arranged on the pcb board of strip.

Be fixed with garment bag between described body and the lamp holder.

Described pcb board offers screw hole, and pcb board is fixed on the top end face of heat radiation aluminum pipe by screw.

Described translucent cover is translucent mask, frosting translucent cover, internal tooth wire drawing translucent cover, external tooth wire drawing translucent cover or glass transparent cover.

The utility model beneficial effect is:

A kind of LED fluorescent tube that the utility model provides comprises body, is fixed on pcb board, the lamp holder that is arranged at the body two ends, a plurality of led chip of the strip in the body, be fixed with power pin on the lamp holder, power pin is electrically connected with pcb board, a plurality of led chip encapsulation are fixed on the pcb board, and led chip is electrically connected with pcb board; Described body is made up of translucent cover, heat radiation aluminum pipe, and translucent cover is fixed on the top of heat radiation aluminum pipe, and pcb board is fixed between translucent cover and the heat radiation aluminum pipe; When the luminous work of led chip, the heat that led chip produced can pass to the heat radiation aluminum pipe by pcb board, the thermal conductivity factor of the radiating tube of being made by aluminium alloy is higher, radiating effect is better, the heat that pcb board can be passed over promptly is dispersed in the air, make that the operating temperature in the body can be not too high, thereby prolong the service life of led chip, and, a plurality of led chip of the present utility model is that directly encapsulation is fixed on the pcb board, compares with the existing LED fluorescent tube that packaged LED is welded on the pcb board, and the volume of the utility model pcb board can be done lessly, install and use more convenient, when luminous, the whole LED fluorescent tube forms linear light sorurce, and it is even to go out light effect, identical with traditional fluorescent tube effect, there are not the spot light or the dark space of being interrupted.

Description of drawings:

Fig. 1 is a structural representation of the present utility model;

Fig. 2 is a decomposing schematic representation of the present utility model;

Fig. 3 is the enlarged diagram at A place among Fig. 2.

The specific embodiment:

Below in conjunction with accompanying drawing the utility model is further described, please refer to Fig. 1～3, a kind of LED fluorescent tube that the utility model provides, it comprises body 1, is fixed on pcb board 2, the lamp holder 3 that is arranged at body 1 two ends, a plurality of led chip 4 of the strip in the body 1, be fixed with power pin 31 on the lamp holder 3, power pin 31 is electrically connected with pcb board 2, and a plurality of led chip 4 encapsulation are fixed on the pcb board 2, and led chip 4 is electrically connected with pcb board 2; Described body 1 is made up of translucent cover 11, heat radiation aluminum pipe 12, translucent cover 11 is fixed on the top of heat radiation aluminum pipe 12, pcb board 2 is fixed between translucent cover 11 and the heat radiation aluminum pipe 12, it is the periphery that translucent cover 11 covers on pcb board 2, feasible encapsulation is fixed on the led chip 4 on the pcb board 2, when luminous, light can see through translucent cover 11 irradiations and come out; Simultaneously, the heat that led chip 4 is produced when luminous can pass to heat radiation aluminum pipe 12 by pcb board 2, the thermal conductivity factor of the radiating tube of being made by aluminium alloy is higher, radiating effect is better, the heat that pcb board 2 can be passed over promptly is dispersed in the air, make that the operating temperature in the body 1 can be not too high, thereby prolong the service life of led chip 4.

A plurality of led chips 4 of present embodiment equidistantly are arranged on the pcb board 2 of strip, more particularly, a plurality of led chips 4 are to be encapsulated on the pcb board 2 by epoxy resin is directly equidistant with arranging, make that the LED fluorescent tube can be luminous equably, and, because existing LED fluorescent tube, great majority are that single led chip is earlier packaged for LED, LED is welded on the pcb board 2 again, like this, not only the volume of pcb board 2 is bigger, the assembling trouble can form spot light when luminous, and it is bad to go out light effect, and the utility model directly is encapsulated in led chip 4 on the pcb board 2, make the volume of pcb board 2 can do lessly, install and use more convenient, when luminous, the whole LED fluorescent tube forms linear light sorurce, it is even to go out light effect, identical with traditional fluorescent tube effect, does not have the spot light or the dark space of being interrupted.

Connect and fix between the body 1 of present embodiment and the lamp holder 3 and be useful on the garment bag 5 that prevents that dust or foreign material from entering; Described pcb board 2 offers screw hole 21, pcb board 2 by screw be fixed on the heat radiation aluminum pipe 12 the top end face, wherein, the bottom end face of pcb board 2 be close to the heat radiation aluminum pipe 12 the top end face on so that the better transmission of heat; Certainly, in the utility model, can place in the described heat radiation aluminum pipe 12 and be used to the control circuit board controlling the LED lamp tube starting or extinguish, control circuit board is connected electrically between power pin 31 and the pcb board 2.Wherein, in the present embodiment, described translucent cover 11 is translucent mask, frosting translucent cover, internal tooth wire drawing translucent cover, external tooth wire drawing translucent cover or glass transparent cover etc.

The utility model is when using, and the quantity of the length of its body 1 and led chip 4 can change in the manufacturing as required.Simultaneously, owing to all be provided with power pin 31 on the lamp holder 3 at the utility model two ends,, just a plurality of LED fluorescent tubes can be carried out the connection of serial or parallel connection, thereby increase illuminating effect or decorative effect as long as use external power receptacle to assist connection.

Certainly, the above only is preferred embodiment of the present utility model, so all equivalences of doing according to the described structure of the utility model patent claim, feature and principle change or modify, is included in the utility model patent claim.

Claims

1. LED fluorescent tube, it comprises body (1), be fixed on the strip in the body (1) pcb board (2), be arranged at the lamp holder (3) at body (1) two ends, be fixed with power pin (31) on the lamp holder (3), power pin (31) is electrically connected with pcb board (2), it is characterized in that: it also comprises a plurality of led chips (4), a plurality of led chips (4) encapsulation is fixed on the pcb board (2), and led chip (4) is electrically connected with pcb board (2); Described body (1) is made up of translucent cover (11), heat radiation aluminum pipe (12), and translucent cover (11) is fixed on the top of heat radiation aluminum pipe (12), and pcb board (2) is fixed between translucent cover (11) and the heat radiation aluminum pipe (12).

2. a kind of LED fluorescent tube according to claim 1 is characterized in that: described a plurality of led chips (4) equidistantly are arranged on the pcb board (2) of strip.

3. a kind of LED fluorescent tube according to claim 1 is characterized in that: be fixed with garment bag (5) between described body (1) and the lamp holder (3).

4. according to any described a kind of LED fluorescent tube of claim 1 to 3, it is characterized in that: described pcb board (2) offers screw hole (21), and pcb board (2) is fixed on the top end face of heat radiation aluminum pipe (12) by screw.

5. a kind of LED fluorescent tube according to claim 4 is characterized in that: described translucent cover (11) is translucent mask, frosting translucent cover, internal tooth wire drawing translucent cover, external tooth wire drawing translucent cover or glass transparent cover.