CN205249059U

CN205249059U - Ultra -thin type switching power supply

Info

Publication number: CN205249059U
Application number: CN201520911469.0U
Authority: CN
Inventors: 唐景新
Original assignee: CHANGZHOU CHUANGLIAN POWER SUPPLY Co Ltd
Current assignee: Changzhou Chuanglian power Polytron Technologies Inc
Priority date: 2015-11-16
Filing date: 2015-11-16
Publication date: 2016-05-18
Anticipated expiration: 2025-11-16

Abstract

The utility model provides an ultra -thin type switching power supply, including shell and circuit arrangement, the shell includes upper cover and base, the base includes bottom plate and 2 blocks of curb plates, circuit arrangement includes circuit board, AC input subunit, transformer and output Rectifier pipe, and the transformer includes secondary large current output winding, its structural feature is: still including heat dissipation mounting 7, the AC input subunit is including 2 parallelly connected L binding post, parallelly connected 2 N binding post and 1 ground terminal, the transformer is the transformer of 20 millimeters height, the secondary large current output winding of transformer is become to the coalesced copper set of bands on the circuit board by the beading, the heat dissipation mounting includes fin and set screw, 4 output Rectifier pipe is fixed on the base through the heat dissipation mounting. The utility model discloses a structural design, thickness reduces by a wide margin, and output efficiency improves during the use, and good heat dissipation and wiring are convenient.

Description

A kind of very thin type switch power supply

Technical field

The utility model relates to Switching Power Supply, is specifically related to a kind of very thin type switch power supply of 200W power.

Background technology

The Switching Power Supply of 200W power is widely used in the electrical equipment such as Grand LED Screen. current, Grand LED Screen mainstream technology is to particularly ultrathin future development of high-resolution, high density, must make its thickness of Switching Power Supply of supporting employing be restricted, the common thickness of Switching Power Supply of current 200W power is on the market 50mm, can not meet the demands. the Switching Power Supply of 200W power is made up of shell and installation circuit board and related device in the enclosure conventionally. on circuit board, be provided with a large amount of electronic devices and components, when work, Switching Power Supply is inner can produce more heat, and Switching Power Supply when work as do not accomplished efficiently radiates heat, light affect service life of Switching Power Supply, heavy may be due to the overheated damage that causes Switching Power Supply internal circuit. when Switching Power Supply is during to ultrathin future development, because enclosure space is further compressed, thereby effectively solve heat dissipation problem and seem even more important, simultaneously, the interchange input wires terminal of existing Switching Power Supply is generally only established L, each one of N, and a Grand LED Screen often needs to use tens even up to a hundred Switching Power Supplies, it is cumbersome that numerous Switching Power Supplies exchanges input wires in the time of construction, generally connected on the interchange input wires terminal of first row Switching Power Supply by total interchange input inlet wire, then the interchange input line of second row Switching Power Supply is directly received on the interchange input wires terminal of first row Switching Power Supply, by that analogy, the interchange input line of all Switching Power Supplies is all connected on the interchange input wires terminal of a row switch power supply, this kind of wiring troublesome poeration and joint easily occur loosening, impact is used.

Utility model content

The purpose of this utility model is: provide a kind of and by structural design and improvement, thickness significantly reduced, when use delivery efficiency improve, the very thin type switch power supply of the good and easy-to-connect of thermal diffusivity.

The technical solution of the utility model is: very thin type switch power supply of the present utility model, comprises shell and circuit arrangement; Above-mentioned shell comprises upper cover and base; Base comprises the base plate that one connects and is divided into 2 blocks of side plates of the base plate left and right sides; Circuit arrangement comprises circuit board, ac input end subgroup, transformer and output rectifying tube, and transformer comprises secondary High-current output winding; Circuit board is fixedly installed on the base plate of base; Ac input end subgroup, transformer are arranged on circuit board; Output rectifying tube is provided with 4; Its design feature is: also comprise heat radiation fixture;

Above-mentioned ac input end subgroup comprises 2 N binding posts and 1 ground terminal of 2 L binding posts in parallel, parallel connection; Transformer is the transformer of 20 millimeters of height; The secondary High-current output winding of transformer is made up of the oxygen-free copper stripe being welded direct on circuit board;

Heat radiation fixture comprises fin and hold-down screw; Fin is provided with 3, wherein after 2 output rectifying tubes of 2 fin clampings, is fixed on the side plate that is positioned at left side of base with hold-down screw; The 3rd fin is pressed in other 2 output rectifying tubes on the side plate that is positioned at right side of base and fixes with hold-down screw.

Further scheme is: above-mentioned shell be highly 30 millimeters up and down.

Further scheme is: on above-mentioned shell, cover and be provided with one group of heat radiation slotted eye.

Further scheme is: the material of above-mentioned shell is aluminium.

Further scheme is: the fin of above-mentioned heat radiation fixture is aluminium sheet.

The utlity model has positive effect: (1) very thin type switch power supply of the present utility model, it is highly the transformer of 20 millimeters by employing, thereby make the height attenuation thereupon of whole Switching Power Supply, by on the market general 50 millimeters be highly significantly reduced to 30 millimeters, can effectively meet the thickness requirement of ultra-thin large-screen LED display to Switching Power Supply. (2) very thin type switch power supply of the present utility model, adopting oxygen-free copper stripe to substitute traditional enamel-covered wire the secondary High-current output winding of transformer makes, and be welded direct on circuit board, current loss and contact loss are greatly reduced, can effectively reduce the heating of transformer, the delivery efficiency of Switching Power Supply be brought up to 82% by 78% of like product on the market simultaneously. (3) very thin type switch power supply of the present utility model, the main heating power devices such as 4 output rectifying tubes in circuit arrangement are fixedly mounted on the base side plate of aluminum shell by heat radiation fixture, 4 output rectifying tube heatings can effectively be dispelled the heat by heat radiation fixture and shell, in addition shell on cover one group of setting heat radiation slotted eye, the heat dispersion of Switching Power Supply is greatly improved. (4) very thin type switch power supply of the present utility model, AC input terminal adopts L, the N binding post of 2 groups of parallel connections, thereby make multiple the utility model in the time being applied to Grand LED Screen, one group of L, N end that next one group of L of the present utility model, N AC input terminal are set up with a upper special parallel connection is connected, the rest may be inferred, thereby make AC power input wires convenient, solid and reliable.

Brief description of the drawings

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

Fig. 2 is the top view of Fig. 1;

Fig. 3 removes the structural representation after upper cover in Fig. 2.

Reference numeral in above-mentioned accompanying drawing is as follows:

Shell 1, upper cover 11, heat radiation slotted eye 11-1, base 12, base plate 12-1, side plate 12-2,

Circuit board 2,

Ac input end subgroup 3,

Transformer 4,

Output rectifying tube 5,

Secondary High-current output winding 6,

Heat radiation fixture 7, fin 71, hold-down screw 72.

Detailed description of the invention

Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.

(embodiment 1)

See Fig. 1 to Fig. 3, the very thin type switch power supply of the present embodiment, it is mainly made up of shell 1, circuit arrangement and heat radiation fixture 7.

Shell 1 is mainly made up of upper cover 11 and base 12. Upper cover 11 is provided with one group of heat radiation slotted eye 11-1. Base 12 is made up of base plate 12-1 and 2 side plate 12-2 one, and 2 side plate 12-2 are each respectively in the upper end, the left and right sides of base plate 12-1 arranges 1. While installing, upper cover 11 is fastened on the upper end of base 12 and is screwed connection. Shell 1 be highly 30 millimeters up and down. The material of shell 1 is the aluminium easily dispelling the heat.

Circuit arrangement comprises the components and parts such as circuit board 2, ac input end subgroup 3, transformer 4 and output rectifying tube 5, and transformer 4 comprises secondary High-current output winding 6. Circuit board 2 is provided with circuit, and the circuit of Switching Power Supply is existing mature technology, does not describe in detail.

Circuit board 2 is fixedly installed on the base plate 12-1 of base 12; Ac input end subgroup 3, transformer 4 are arranged on circuit board 2.

Ac input end subgroup 3 comprises 2 N binding posts and 1 ground terminal of 2 L binding posts in parallel, parallel connection, when use, with one group of L, N binding post external AC power supply, another group L, N binding post are used for the alternating current input wires of another Switching Power Supply, thereby the very thin type switch power supply that makes the present embodiment is multiple while being applied to as occasions such as Grand LED Screens simultaneously, AC power input wires is convenient, solid and reliable.

Transformer 4 employings are highly the transformer of 20 millimeters, thereby make the height attenuation thereupon of whole Switching Power Supply, by in prior art general 50 millimeters be highly significantly reduced to 30 millimeters, can effectively meet the thickness requirements of application scenario to Switching Power Supply such as ultra-thin large-screen LED display. In the present embodiment, the secondary High-current output winding 6 of transformer 4 adopts the oxygen-free copper stripe being welded direct on circuit board, substitutes traditional enamel-covered wire in prior art, can greatly reduce current loss and contact loss on the one hand, effectively reduces the heating of transformer; The delivery efficiency of Switching Power Supply is brought up to 82% by 78% of like product simultaneously.

Output rectifying tube 5 is provided with 4. One of main power heater members that output rectifying tube 5 is Switching Power Supply.

Heat radiation fixture 7 is made up of fin 71 and hold-down screw 72. Fin 71 is square aluminium sheet, and fin 71 is provided with 3, and wherein 2 fin 71 clamp on 2 rear side plate 12-2 that are positioned at left side that are fixed on base 12 with hold-down screw 72 of output rectifying tube 5; The side plate 12-2 that is positioned at right side that other 2 output rectifying tubes 5 are pressed in base 12 by the 3rd fin 71 goes up and uses hold-down screw 72 fixing. This kind of structure can effectively be dispelled the heat 5 heatings of 4 output rectifying tubes by heat radiation fixture 7 and shell 1, the heat dispersion of Switching Power Supply is greatly improved.

Above embodiment is the explanation to detailed description of the invention of the present utility model; but not to restriction of the present utility model; person skilled in the relevant technique is not in the situation that departing from spirit and scope of the present utility model; can also make various conversion and variation and obtain the corresponding technical scheme being equal to, therefore all technical schemes that are equal to all should be included into scope of patent protection of the present utility model.

Claims

1. a very thin type switch power supply, comprises shell (1) and circuit arrangement; Described shell (1) comprises upper cover (11) and base (12); Base (12) comprises the base plate (12-1) that one connects and is divided into 2 blocks of side plates (12-2) of base plate (12-1) left and right sides; Circuit arrangement comprises circuit board (2), ac input end subgroup (3), transformer (4) and output rectifying tube (5), and transformer (4) comprises secondary High-current output winding (6); Circuit board (2) is fixedly installed on the base plate (12-1) of base (12); Ac input end subgroup (3), transformer (4) are arranged on circuit board (2); Output rectifying tube (5) is provided with 4; It is characterized in that: also comprise heat radiation fixture (7);

Described ac input end subgroup (3) comprises 2 N binding posts and 1 ground terminal of 2 L binding posts in parallel, parallel connection; Transformer (4) is the transformer of 20 millimeters of height; The secondary High-current output winding (6) of transformer (4) is made up of the oxygen-free copper stripe being welded direct on circuit board (2);

Heat radiation fixture (7) comprises fin (71) and hold-down screw (72); Fin (71) is provided with 3, wherein after 2 fin (71), 2 output rectifying tubes of clamping (5), is fixed on the side plate (12-2) that is positioned at left side of base (12) with hold-down screw (72); The side plate that is positioned at right side (12-2) that other 2 output rectifying tubes (5) are pressed in base (12) by the 3rd fin (71) goes up and uses hold-down screw (72) fixing.

2. very thin type switch power supply according to claim 1, is characterized in that: described shell (1) be highly 30 millimeters up and down.

3. very thin type switch power supply according to claim 1, is characterized in that: the upper cover (11) of described shell (1) is provided with one group of heat radiation slotted eye (11-1).

4. very thin type switch power supply according to claim 1, is characterized in that: the material of described shell (1) is aluminium.

5. very thin type switch power supply according to claim 1, is characterized in that: the fin (71) of described heat radiation fixture (7) is aluminium sheet.