CN202307444U

CN202307444U - Transformer, power device and LED (Light Emitting Diode) fluorescent lamp

Info

Publication number: CN202307444U
Application number: CN201120431295XU
Authority: CN
Inventors: 孟业超
Original assignee: GENERAL LIGHTING ELECTRONIC CO Ltd
Current assignee: GENERAL LIGHTING ELECTRONIC CO Ltd
Priority date: 2011-11-02
Filing date: 2011-11-02
Publication date: 2012-07-04
Anticipated expiration: 2021-11-02

Abstract

The utility model provides a transformer, a power device and an LED (Light Emitting Diode) fluorescent lamp. The transformer comprises a frame, an upper magnetic core and a lower magnetic core, wherein the upper magnetic core is arranged above the frame; the lower magnetic core is arranged on the lower part of the frame and is positioned below the upper magnetic core; the frame comprises a bottom plate and a T column which is arranged on the bottom plate; the T column is provided with a first notch; the bottom surface of the lower magnetic core is provided with a strip-shaped middle column; the middle column is arranged in the first notch; and a winding set is wound on the lower end of the T column. According to the transformer, the output power of the entire transformer is increased, the number of turns of the winding set is reduced, the leakage inductance of the transformer is reduced, electromagnetic interference (EMC) is effectively reduced, meanwhile, the height of an entire power supply is also reduced, and the thickness of the power supply made by the transformer is extremely small.

Description

A kind of transformer, supply unit and LED fluorescent lamp

Technical field

The utility model relates to technical field of electricity, particularly a kind of transformer, supply unit and LED fluorescent lamp.

Background technology

The LED fluorescent lamp that prior art provides comprises the aluminium groove that is used to dispel the heat and the lampshade of luminous zone; But; Because the power supply excessive height of this LED, force the aluminium groove area of LED fluorescent lamp to strengthen, thereby and make the light-emitting area of real daylight lamp reduce to cause the whole LED fluorescent lamp following phenomenon to occur:

The light efficiency of LED fluorescent lamp reduces, and luminous flux reduces, and is luminous irregular, occurs dark space and point-source of light easily.Limited the power output of LED fluorescent lamp simultaneously because of the height of LED fluorescent tube structure and traditional transformer, and the conventional power source volume is big, the winding winding turns is more.

The utility model content

The utility model provides a kind of power output that increases whole transformer, reduce the number of turns of coiling group and reduce transformer, supply unit and the LED fluorescent lamp of power volume.

To achieve these goals, the utility model provides following technical scheme:

A kind of transformer, it comprises: skeleton, last magnetic core and following magnetic core, wherein: said upward magnetic core is arranged on the top of said skeleton; Bottom and said magnetic core down that said magnetic core down is arranged on said skeleton are positioned at said below of going up magnetic core; Said skeleton comprises base plate and is located at the T post on the said base plate, and said T post is provided with first groove, and the bottom surface of said down magnetic core is provided with the center pillar of strip; Said center pillar is installed in said first groove, and the lower end of said T post is wound with the coiling group.

Preferably, the two ends of said center pillar are semicircle.

Preferably, said both sides of going up magnetic core are parallel with said center pillar respectively with the both sides of said magnetic core down and extend to two ends, and the said magnetic core of going up seals said center pillar with the both sides of following magnetic core extension.

Preferably, the base plate dual-side of said skeleton is respectively opened a rectangular groove, and said going up docked with said magnetic core down after magnetic core passes said rectangular groove.

The utility model also provides a kind of supply unit, and it comprises above-mentioned any transformer and pcb board, and said pcb board is provided with and hollows out the place, and said transformer is installed in the said place that hollows out.

The utility model also provides a kind of LED fluorescent lamp, and it comprises above-mentioned supply unit.

Through implementing above technical scheme; Have following technique effect: the center pillar on the magnetic core of the transformer that the utility model provides adopts strip structure; Increase the area of center pillar greatly, increased the power output of whole transformer, reduced the number of turns of winding; Reduced simultaneously the height of whole power supply again, can make the very thin thickness of the power supply of making by this transformer.Can reduce the leakage inductance of transformer effectively, reduce electromagnetic interference (EMC).

Description of drawings

The stereogram of the transformer that Fig. 1 provides for the utility model embodiment;

The end view of the transformer that Fig. 2 provides for the utility model embodiment;

The structural representation of the following magnetic core of the transformer that Fig. 3 provides for the utility model embodiment;

The STRUCTURE DECOMPOSITION figure of the transformer that Fig. 4 provides for the utility model embodiment.

Embodiment

In order better to understand the technical scheme of the utility model, describe the embodiment that the utility model provides in detail below in conjunction with accompanying drawing.

The utility model embodiment provides a kind of transformer, and is as shown in Figure 4, and this transformer comprises: skeleton 103, last magnetic core 106 and following magnetic core 109; Wherein: said upward magnetic core 106 is arranged on the top of said skeleton 103; Bottom and said magnetic core 109 down that said magnetic core 109 down is arranged on said skeleton 103 are positioned at said below of going up magnetic core 106, and said skeleton 103 comprises base plate 120 and be located at the T post 130 on the said base plate 120 that said T post 130 is provided with first groove 113; The said bottom surface of magnetic core 109 down is provided with strip center pillar 101; Said center pillar 101 is installed in said first groove 113, and as shown in Figure 1, the lower end of said T post 130 is wound with coiling group 108.This center pillar 101 adopts strip structures, has increased the sectional area of center pillar 101 greatly, has increased the power output of whole transformer, reduces the number of turns of coiling group 108, has reduced the height of whole power supply simultaneously again, can make very thin that power supply does.

In the above-described embodiments, preferably as shown in Figure 3, the two ends of said center pillar 101 are semicircle.

In the foregoing description; Preferably; The both sides of said both sides of going up magnetic core 106 and said magnetic core 109 down are parallel with said center pillar 101 respectively and extend to two ends; And saidly go up the both sides that magnetic core 106 extends and seal said center pillar 101 with the both sides of following magnetic core 109 extensions, coiling group 108 has only from right ends and just can see.Help whole transformer heat radiation.Simultaneously, because of extending the shielding action that produces, the leakage inductance of whole transformer is reduced.And be the both sides outlet of magnetic core down in the prior art, increase electromagnetic interference and can not confirm factor.Following magnetic core 109, go up the sealing of magnetic core 106 employing both sides, both ends open structure, be convenient to the outlet of coiling group 108, simplify production technology, improve the stability and the reliability of product, reduce electromagnetic interference.

In other embodiment, further, the base plate dual-side 111 of said skeleton 103 is respectively opened a rectangular groove 112, and said going up docked with said magnetic core 109 down after magnetic core 106 passes said rectangular groove 112.The cross section of this time magnetic core 109 is the U type.Should go up magnetic core 106 docks with the said U type two ends of magnetic core 109 down respectively.This joint adopts magnetic-conductive adhesive to fix.This side 111 has increased the force intensity that receives of this skeleton 103.

The two ends of the base plate 120 of this skeleton 103 are provided with pin 105.

In addition, in other embodiment, further, right-angle structure is adopted in the corner 110 of said magnetic core 109 sides down, can increase magnetic flux density like this, increases the power output of whole transformer.

In addition, this transformer entire length causes 41mm with respect to the transformer increase of prior art, has increased power output and area of dissipation.

As shown in Figure 2, the utility model embodiment also provides a kind of supply unit, and this supply unit comprises pcb board and the described transformer of above-mentioned any embodiment.Said pcb board 107 is provided with and hollows out the place, and the transformer that this utility model is provided is contained in hollowing out in the place of pcb board 107.Concrete, the base plate 120 of the skeleton of said transformer is installed in the said place that hollows out.

The utility model embodiment also provides a kind of LED fluorescent lamp, and this fluorescent lamp comprises the supply unit that the foregoing description provides.

More than a kind of transformer, supply unit and LED fluorescent lamp that the utility model embodiment is provided carried out detailed introduction; For one of ordinary skill in the art; Thought according to the utility model embodiment; The part that on embodiment and range of application, all can change, in sum, this description should not be construed as the restriction to the utility model.

Claims

1. transformer; It is characterized in that, comprising: skeleton, last magnetic core and following magnetic core, wherein: said upward magnetic core is arranged on the top of said skeleton; Bottom and said magnetic core down that said magnetic core down is arranged on said skeleton are positioned at said below of going up magnetic core; Said skeleton comprises base plate and is located at the T post on the said base plate, and said T post is provided with first groove, and the bottom surface of said down magnetic core is provided with the center pillar of strip; Said center pillar is installed in said first groove, and the lower end of said T post is wound with the coiling group.

2. transformer according to claim 1 is characterized in that, the two ends of said center pillar are semicircle.

3. transformer according to claim 1 or claim 2 is characterized in that, said both sides of going up magnetic core are parallel with said center pillar respectively with the both sides of said magnetic core down and extend to two ends, and saidly goes up magnetic core and said center pillar is sealed in the said extension both sides of magnetic core down.

4. like the said transformer of claim 3, it is characterized in that the base plate dual-side of said skeleton is respectively opened a rectangular groove, said going up docked with said magnetic core down after magnetic core passes said rectangular groove.

5. a supply unit is characterized in that, comprises any described transformer of claim 1 to 4 and pcb board, and said pcb board is provided with and hollows out the place, and said transformer is installed in the said place that hollows out.

6. a LED fluorescent lamp is characterized in that, comprises the described supply unit of claim 5.