CN203190233U - LED backlight module with aluminum extrusion type radiator - Google Patents

Abstract

The utility model relates to an LED backlight module with an aluminum extrusion type radiator. The LED backlight module comprises the aluminum extrusion type radiator, an insulation heat conduction layer, a copper line layer, an anti-welding layer and a plurality of LED assemblies. The copper line layer provided with the LED assemblies in a welded mode is arranged on an arrangement part of the aluminum extrusion type radiator through the insulation heat conduction layer, therefore, when the LED assemblies emit light, heat generated by the LED assemblies is transmitted to the aluminum extrusion type radiator through the insulation heat conduction layer, and then the heat is rapidly and effectively discharged through the aluminum extrusion type radiator made of metal materials with heat conduction characteristics.

Description

LED-backlit module with aluminium extruded type radiator

Technical field

The utility model refers to especially that about a kind of LED-backlit module a kind of LED assembly of can protecting effectively is subjected to the LED-backlit module with aluminium extruded type radiator of external force collision to avoid the LED assembly.

Background technology

LCD is the display product that widely used at present, and the liquid crystal layer of LCD by liquid crystal panel to be to control the light transmittance of each location of pixels, makes LCD show image correctly.At present, LCD be applied in large quantities TV, mobile phone (mobile phone), intelligent mobile phone (smart phone), mobile computer and personal digital assistant (personal digital assistant, PDA) among.Yet because liquid crystal panel belongs to non-self luminous demonstration material, therefore, LCD need dispose a backlight module so that its light source to be provided.

See also Fig. 1, be installed on the combination schematic diagram of a kind of existing LED-backlit module of LCD inside.As shown in Figure 1, this existing LED-backlit module 1 ' mainly comprises: a main frame 100 ' and at least one lamp bar 200 '.Wherein, this main frame 100 ' has a base plate 110 ' and four sides (120 ', 140 ', 160 ', 180 '), this lamp bar 200 ' is arranged at this side (120 ' by thermal paste, 140 ', 180 ') on, and, a plurality of LED assemblies 210 ' that are installed on the circuit board 220 ' had on the lamp bar 200 '.In addition, as shown in Figure 1, a LGP 300 ' is installed in the main frame 100 ', and this LGP 300 ' has four protuberances 350 ' and can embed respectively by formed four the main frame corners of these four sides (120 ', 140 ', 160 ', 180 ').So, when this a plurality of LED assembly 210 ' was luminous, a backlight namely was incident to this LGP 300 ' and is spread.Wherein, because this lamp bar 200 ' directly is installed on three sides (120 ', 140 ' of main frame 100 '; 180 '), lamp bar 200 ' is not subjected to the protection of a cover body or an accommodating body, therefore; in case LCD is clashed into, may cause the damage of lamp bar 200 ' in handling process.In view of this, backlight module manufacturer provides a kind of LED-backlit module with cover body.

See also Fig. 2, be installed on a kind of combination schematic diagram with LED-backlit module of cover body of LCD inside.As shown in Figure 2, two backlight modules 12 " be installed on LCD inside; wherein, these two backlight modules 12 " relatively be arranged at a main frame 11 ' ' upper and lower side frame, each backlight module 12 " comprising: a cover body 121 ", a circuit board 122 " with a plurality of LED assemblies 123 ".Usually, this cover body 121 " by a metal material, for example: aluminium, via the manufacturing of punching press processing procedure, cover body 121 " shape often be ㄇ shape or L shaped.This circuit board 122 " be attached at cover body 121 " inside, and these a plurality of LED assemblies 123 " be arranged at circuit board 122 " on.In addition, in order to increase the receipts light effect of backlight module, a reflecting layer (not shown) more is attached at cover body 121 " inner surface; So, when LED assembly 123 " when luminous, LED assembly 123 can be reflected in this reflecting layer " light that sends, make light can all be incident to LGP.

Therefore, have the LED-backlit module 1 of cover body for above-mentioned this " for, this cover body 121 " in order to ccontaining this circuit board 122 " and these a plurality of LED assemblies 123 ", and LED assembly 123 is provided " suitable protection.Yet, because cover body 121 " be stamped to form by thin metal, therefore, in handling process, be subjected to overgenerous bump as if LCD, may cause cover body 121 " distortion, and cause circuit board 122 " or LED assembly 123 " damage.

Therefore, the explanation of the combination of comprehensive above-mentioned main frame for two kinds of existing LED-backlit modules and LCD, the combination that can learn the main frame of existing LED-backlit module and LCD has and still has many shortcomings and deficiency; In view of this, creator of the present utility model does one's utmost in addition study and composition, and a kind of LED-backlit module with aluminium extruded type radiator of the present utility model is finished in research and development finally.

The utility model content

First purpose of the present utility model; be to provide a kind of LED-backlit module with aluminium extruded type radiator; a copper wire layer that is welded with a plurality of LED assemblies is arranged at one of an aluminium extruded type radiator by an insulating heat-conductive glue to be arranged in the portion; protecting this a plurality of LED assemblies effectively by this aluminium extruded type radiator, and then avoid the LED assembly to damage because of external force collision.

Second purpose of the present utility model, be to provide a kind of LED-backlit module with aluminium extruded type radiator, a copper wire layer that is welded with a plurality of LED assemblies is arranged at one of an aluminium extruded type radiator by an insulating heat-conductive glue to be arranged in the portion, so, when those LED assemblies are luminous, its heat that produces can conduct to the aluminium extruded type radiator by this insulating heat-conductive layer, afterwards via the made aluminium extruded type radiator of the metal material with thermal conduction characteristic by rapidly, exclude effectively.

The 3rd purpose of the present utility model, be to provide a kind of LED-backlit module with aluminium extruded type radiator, a copper wire layer that is welded with a plurality of LED assemblies is arranged at one of an aluminium extruded type radiator by an insulating heat-conductive glue to be arranged in the portion, and form a welding resisting layer between this copper wire layer and those LED assemblies, and then see through welding resisting layer Fang Zhi Rong melt scolding tin about flow, take place so needn't worry the situation that adjacent two weld metal pads can be connected with each other because of flowing about scolding tin, promote the product percent of pass that this has the LED-backlit module of aluminium extruded type radiator by this mode.

In order to reach above-mentioned purpose of the present utility model, designer of the present utility model proposes a kind of LED-backlit module with aluminium extruded type radiator, comprising:

One aluminium extruded type radiator;

One insulating heat-conductive layer is arranged in this aluminium extruded type radiator;

One copper wire layer is arranged on this insulating heat-conductive layer, and has a main line and a plurality of weld metal pad at least;

One welding resisting layer is covered on this copper wire layer, wherein offers a plurality of welding windows on this welding resisting layer, in order to expose these a plurality of weld metal pads of this copper wire layer; And

A plurality of LED assemblies are arranged on this welding resisting layer, and are welded to each other with this weld metal pad.

Aforesaid LED-backlit module with aluminium extruded type radiator, wherein, this welding resisting layer is located on this copper wire layer by white paint spraying.

Aforesaid LED-backlit module with aluminium extruded type radiator, wherein, this aluminium extruded type radiator comprises:

One end part, its surface is provided with a support portion; And

One arranges part, is connected in this end part and vertical mutually with this end part, and wherein this insulating heat-conductive layer, this copper wire layer namely are arranged on this surface that part is set with these a plurality of LED assemblies.

Aforesaid LED-backlit module with aluminium extruded type radiator also comprises:

One LGP is located on this aluminium extruded type radiator, and faces those LED assemblies with the one light receiving surface.

Compared with prior art, the beneficial effects of the utility model are:

1. in the utility model; a copper wire layer 13 that is welded with a plurality of LED assemblies 14 is arranged at one of an aluminium extruded type radiator 11 by an insulating heat-conductive glue 12 to be arranged in the portion 121; protect these a plurality of LED assemblies 14 effectively to pass through this aluminium extruded type radiator 11, and then avoid LED assembly 14 to damage because of external force collision.

2. in addition, the utility model coating welding resisting layer 16 is between copper wire layer 13 and LED assembly 14, and then see through welding resisting layer 16 Fang Zhi Rong melt scolding tin about flow, take place so needn't worry the situation that adjacent two weld metal pads 132 can be connected with each other because of flowing about scolding tin, promote the product percent of pass that this has the LED-backlit module 1 of aluminium extruded type radiator by this mode.

3. hold above-mentioned the 2nd point, because this welding resisting layer 16 is located on this copper wire layer 13 by white paint spraying, therefore, welding resisting layer 16 itself possesses the characteristic of light reflection, therefore, by the formation of welding resisting layer 16, not only can promote the product percent of pass with LED-backlit module 1 of aluminium extruded type radiator of the present utility model, also can increase its usefulness backlight simultaneously.

4. in addition, the utility model also is applied to the mode of the outer surface of this aluminium extruded type radiator 11 by heat radiation coating, promotes the heat dissipation of LED optical module further.

Description of drawings

Fig. 1 is the existing combination schematic diagram that is installed on a kind of existing LED-backlit module of a LCD inside;

Fig. 2 is the existing a kind of combination schematic diagram with LED-backlit module of cover body that is installed on LCD inside;

Fig. 3 a kind of side view with LED-backlit module of aluminium extruded type radiator of the present utility model; And

Fig. 4 is the three-dimensional exploded view with LED-backlit module of aluminium extruded type radiator of the present utility model.

Main symbol description among the figure:

1: the LED-backlit module with aluminium extruded type radiator

11: aluminium extruded type radiator 12: the insulating heat-conductive layer

13: copper wire layer 14:LED assembly

111: end part 112: part is set

1111: support portion 131: main line

132: weld metal pad 15: LGP

151: light receiving surface 17: end reflector plate

16: welding resisting layer 161: the welding window

1 ': existing LED-backlit module

100 ': main frame 200 ': the lamp bar

110 ': base plate 120 ': side

140 ': side 160 ': side

180 ': side 220 ': circuit board

210 ': LED assembly 300 ': LGP

350 ': protuberance

1 ' ': the LED-backlit module with cover body

12 ": backlight module 11 ": main frame

121 ": cover body 122 ": circuit board

123 ": the LED assembly

The specific embodiment

In order more clearly to describe a kind of LED-backlit module with aluminium extruded type radiator that the utility model proposes, below will cooperate graphicly, elaborate preferred embodiment of the present utility model.

See also Fig. 3 and Fig. 4, a kind of side view and three-dimensional exploded view with LED-backlit module of aluminium extruded type radiator of the present utility model.As shown in Figure 3 and Figure 4, LED-backlit module with aluminium extruded type radiator of the present utility model comprises: an aluminium extruded type radiator 11, an insulating heat-conductive layer 12, a copper wire layer 13, a welding resisting layer 16 and a plurality of LED assembly 14, wherein, this aluminium extruded type radiator 11 has an end part 111 and a part 112 is set.

Consult Fig. 3 and Fig. 4 unceasingly, the surface of this end part 111 is formed with a support portion 1111, and this arranges part 112 and is connected in this end part 111 and vertical mutually with end part 111.And insulating heat-conductive layer 12 is arranged in this aluminium extruded type radiator 11, and is arranged on this surface that part 112 is set.And this copper wire layer 13 is arranged on this insulating heat-conductive layer 12, and has a main line 131 and a plurality of weld metal pad 132 at least.Especially, in the utility model, cover this copper wire layer 13 with this welding resisting layer 16, and offer a plurality of welding windows 161 on the welding resisting layer 16, in order to expose these a plurality of weld metal pads 132 of this copper wire layer 13.Moreover 14 of a plurality of LED assemblies are arranged on this copper wire layer 13, and are welded to each other with this weld metal pad 132.In this, what must specify is, since the scolding tin on those weld metal pads 132 may because the high temperature heating and about flow, and welding resisting layer 16 mainly be exactly be Fang Zhi Rong melt scolding tin about flow, therefore needn't worry that the situation that adjacent two weld metal pads 132 can be connected with each other because of flowing about scolding tin takes place, and promotes the product percent of pass of the LED-backlit module 1 with aluminium extruded type radiator by this mode.

So, this has the basic framework of the LED-backlit module 1 of aluminium extruded type radiator above-mentioned complete description, then, will go on to say technical characterictic and the effect thereof that this has the LED-backlit module 1 of aluminium extruded type radiator.Of the present utility model have the LED-backlit module 1 of aluminium extruded type radiator in order to light source to a LGP will be provided; As shown in Figure 3, LGP 15 is arranged in this aluminium extruded type radiator 11 in the face of the mode of those LED assemblies 14 with one light receiving surface 151; So, when then those LED assemblies 14 were luminous, the light receiving surface 151 of LGP 15 just can receive the light that LED assembly 14 sends.In addition, what must remark additionally is, in order to increase the efficient of the LED-backlit module with aluminium extruded type radiator, as shown in Figure 3, the modal practice is to set up an end reflector plate 17 in the lower surface of LGP 15, and this end reflector plate 17 can prevent that light is by the lower surface spill and leakage of LGP 15.

Moreover in order to increase the usefulness backlight of backlight module, the common another kind of practice is to be provided with a reflecting layer on copper wire layer 13; In the utility model, as shown in Figure 3 and Figure 4, because this welding resisting layer 16 is sprayed on this copper wire layer 13 by a white paint, therefore, welding resisting layer 16 itself possesses the characteristic of light reflection, therefore, welding resisting layer 16 not only can promote the product percent of pass with LED-backlit module 1 of aluminium extruded type radiator of the present utility model, also can increase its usefulness backlight simultaneously.

Moreover what the most normal behaviour of LED-backlit module denounced namely is the problem of heat radiation.In the utility model, in order to solve the heat dissipation problem of LED-backlit module, make this aluminium extruded type radiator 11 with the metal material with thermal conduction characteristic especially; And, in addition, be coated with a heat radiation coating (not shown) in the outer surface of aluminium extruded type radiator 11.So, when those LED assemblies 14 are luminous, its heat that produces can conduct to aluminium extruded type radiator 11 by this insulating heat-conductive layer 12, afterwards, auxiliary via heat radiation coating, by the made aluminium extruded type radiator 11 of the metal material with thermal conduction characteristic just can be rapidly, the hot type that effectively LED assembly 14 produced removes.In this, what must specify is, the utility model is not specially limited the form of heat radiation coating or implements aspect, and on practical application face, how this heat radiation coating can be rice ceramic heat-dissipating coating, heat loss through radiation coating or boron nitride ceramics heat radiation coating.

Above embodiment is exemplary embodiment of the present utility model only, is not used in restriction the utility model, and protection domain of the present utility model is defined by the claims.Those skilled in the art can make various modifications or be equal to replacement the utility model in essence of the present utility model and protection domain, this modification or be equal to replacement and also should be considered as dropping in the protection domain of the present utility model.

Claims (4)

1. the LED-backlit module with aluminium extruded type radiator is characterized in that, comprising:

One aluminium extruded type radiator;

One insulating heat-conductive layer is arranged in this aluminium extruded type radiator;

One copper wire layer is arranged on this insulating heat-conductive layer, and has a main line and a plurality of weld metal pad at least;

One welding resisting layer is covered on this copper wire layer, wherein offers a plurality of welding windows on this welding resisting layer, in order to expose these a plurality of weld metal pads of this copper wire layer; And

A plurality of LED assemblies are arranged on this welding resisting layer, and are welded to each other with this weld metal pad.

2. the LED-backlit module with aluminium extruded type radiator according to claim 1 is characterized in that, wherein, this welding resisting layer is located on this copper wire layer by white paint spraying.

3. the LED-backlit module with aluminium extruded type radiator according to claim 1 is characterized in that, wherein, this aluminium extruded type radiator comprises:

One end part, its surface is provided with a support portion; And

One arranges part, is connected in this end part and vertical mutually with this end part, and wherein this insulating heat-conductive layer, this copper wire layer namely are arranged on this surface that part is set with these a plurality of LED assemblies.

4. the LED-backlit module with aluminium extruded type radiator according to claim 1 is characterized in that, also comprises:

One LGP is located on this aluminium extruded type radiator, and faces those LED assemblies with the one light receiving surface.

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