CN207162487U - The radiator structure of LED backlight - Google Patents

Abstract

The utility model discloses a kind of radiator structure of LED backlight, some radiating fins of bottom including the housing located at the LED backlight, some radiating fins are located at the bottom surface of some lower concave parts of the bottom of the housing correspondingly, its length direction is parallel with the length direction of the lower concave part, and matches with the lower concave part length；Each radiating fin include being connected to vertically corresponding to lower concave part bottom surface the first long side the first fin, be connected to vertically it is described corresponding to lower concave part bottom surface the second long side the second fin, from the lower end of the first fin and/or the second fin to the horizontal-extending connection sheet in another adjacent radiating fin direction, connection sheet to the adjacent fin with another adjacent radiating fin is connected, and two connection sheets per two adjacent radiating fins form a connecting portion after being integrally connected；The bottom surface of the connecting portion, adjacent two fin and housing encloses to form a heat-dissipating cavity.

Description

The radiator structure of LED backlight

Technical field

It the utility model is related to a kind of radiator structure of LED backlight.

Background technology

LED backlight generally includes housing, LED light emitting sources (i.e. LED/LED lamp tube/LED light group in housing Deng) and be sealed in light guide plate at the shell nozzle.The LED light emitting sources are placed in the bottom wall (inner surface) of the housing On, and the bottom wall of the housing is then a plane, also, in order to solve the heat dissipation problem of LED backlight, improve typically in housing Both sides on open up heat emission hole to be radiated.Above-mentioned LED backlight has following defect：First, multiple LEDs (pipe) are placed in water On flat bottom wall, current LED (pipe) is vulnerable to the irradiation of the light of other LEDs (pipe), so as to cause the drop of luminous efficiency It is low, two, the radiating effect of heat emission hole it is poor, and easily enter dust.

Utility model content

For above-mentioned the deficiencies in the prior art, technical problem to be solved in the utility model is：A kind of efficiently biography is provided The radiator structure for the LED backlight led.

In order to solve the above technical problems, the technical scheme that the utility model uses is：A kind of LED backlight is provided Radiator structure, including located at the LED backlight housing bottom some radiating fins, some radiating fins are one by one The bottom surface of corresponding some lower concave parts located at the bottom of the housing, the length direction of its length direction and the lower concave part are put down OK, and with the lower concave part length match；Each radiating fin includes the bottom surface for being connected to corresponding lower concave part vertically First fin of the first long side, be connected to vertically it is described corresponding to lower concave part bottom surface the second long side second radiating Piece, from the lower end of the first fin and/or the second fin to the horizontal-extending connection in another adjacent radiating fin direction Piece, the connection sheet to the adjacent fin with another adjacent radiating fin are connected, and are dissipated per adjacent two Two connection sheets of hot fin form a connecting portion after being integrally connected；The bottom surface of the connecting portion, adjacent two fin and housing Enclose to form a heat-dissipating cavity, one first thermal vias, first thermal vias are respectively provided with the bottom of each heat-dissipating cavity Length be less than the connecting portion length；It is symmetrical in the first fin of each radiating fin and the medial surface of the second fin Raised provided with one, the spacing being smaller than between first fin and the second fin between two projections is each recessed The wire harness of LED lamp tube in portion is clamped in the space on two projection.

Further, in addition to cover at the housing bottom outer outlet body, each sidewalls vertical of the outer outlet body Be connected to corresponding to horizontal edge lower surface, the bottom wall of the outer outlet body is located at the lower section of the radiating fin, described A fan case is provided with the bottom wall of outer outlet body, hot-swappable fans are provided with the fan case will discharge in the cover body Dissipate gas.

Further, in addition in the side wall of the housing at least one second thermal vias opened up, described outer Opening position in the respective side walls of cover body corresponding to second thermal vias offers corresponding 3rd thermal vias, so that institute The hot gas in housing is stated from second thermal vias and the 3rd thermal vias to flowing to outside the outer outlet body.

Further, in the side wall of the outer cover body sidewall provided with the 3rd thermal vias and the housing provided with the second thermal vias Between space also fill up and be provided with ventilation dustproof thing.

The radiator structure of LED backlight of the present utility model, connected per two adjacent radiating fins by connecting portion Connect, form the heat-dissipating cavity that a both ends and bottom are respectively provided with radiating port, increase while increasing casing rigidity radiating effect with Efficiently conduct, the middle part on the inside of two fin of each radiating fin is raised to relative direction projection one, positioned at the projection Upper space wire harness is clamped to accommodating wire harness and by the projection, be easy to the conclusion and clamping of wire harness, make Layout is more compact and succinct.One outer outlet body is set, and hot-swappable fans are set in the bottom of outer outlet body, more quickly reduces shell The hot gas of inside and outside, and thermal vias is set in the side wall of housing and the side wall of outer outlet body, pass through the convection current of thermal vias By outside the heat derives outer outlet body of enclosure interior, filled between the side wall of the housing of thermal vias and the side wall of outer outlet body ventilative Dust-proof thing, avoid outside dirt ash to enter housing while heat conduction, the part in housing is played a protective role, extends corresponding portion The service life of part.

Brief description of the drawings

Fig. 1 is the structural representation of the embodiment of the utility model LED backlight one.

Fig. 2 is the structural representation of the embodiment of the utility model LED backlight one.

Fig. 3 is the splicing schematic diagram of the housing in the embodiment of the utility model LED backlight one.

Embodiment

Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the embodiment of the utility model is carried out Clearly and completely describing, it is clear that described embodiment is only the utility model part of the embodiment, rather than whole Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not under the premise of creative work is made The every other embodiment obtained, belong to the scope of the utility model protection.

Fig. 1 is referred to, Fig. 1 is the structural representation of the embodiment of the utility model LED backlight one.The LED of the present embodiment Backlight, which includes one, has housing 10, some LEDs on the bottom wall of the housing 10 or the fluorescent tube of opening (chosen below LED lamp tube 12 is described), be sealed in the opening of housing 10 so that the LED lamp tube 12 is sealed in the housing 10 Light guide plate 14 and the radiator structure on the housing 10.

In the present embodiment, the rectangular body shape of housing 10, have a rectangular bottom wall 101 (hereinafter referred to as bottom wall 101) with And formed four side walls 103 are upwardly extended by four edges of the bottom wall 101, each side wall 103 of the housing 10 Upper end is outwards horizontal-extending a horizontal edge 105, and one is extended with vertically upwards in the outer side edges of each horizontal edge 105 Along 107, the vertical edge matches vertical edge along 107 height and the thickness of the light guide plate 14.

In the present embodiment, the bottom wall 101 of the housing 10 and the inner surface of side wall 103 are reflective surface, the housing 10 Bottom wall 101 there is the lower concave part 101a of several spaced (the present embodiment is uniform intervals) and positioned at per two neighboring The bottom surface and two sides of upper convex portion 101b, each lower concave part 101a between lower concave part 101a are reflective surface, some LED Fluorescent tube 12 is arranged in some lower concave part 101a correspondingly.It is a kind of preferable, each lower concave part 101a length with First side of the bottom wall 101 of the housing 10 is equal to the distance between the second relative side, and some lower concave part 101a are from described Threeth side adjacent with first side to the uniform intervals of the 4th relative side direction form channel form on bottom wall 101.

Further, each lower concave part 101a two sides are inclined inclined plane or arcwall face in the opposite direction, The bottom surface of each lower concave part 101a is to recessed arcwall face.In the present embodiment, in the bottom surface of the lower concave part 101a Portion is convex to form a spur 1011c, and the length direction of the spur 1011c and the length direction of the LED lamp tube 12 are put down OK, it is and isometric with the length of the lower concave part 101a, i.e., with the first side of the bottom wall 101 between the second relative side away from From equal, and, the top tip part of each spur 1011c is located at the underface of the axial line of corresponding LED lamp tube 12.It is above-mentioned convex Sharp 1011c setting can increase reflective surface.In order to further increase reflective surface, in the present embodiment, each lower concave part 101a two sides are folding face, specifically, per one side be respectively provided with up and down two folding faces, the lower beveled end of lower folding surface with it is described recessed The first long side connection of portion 101a bottom surface, upper beveled end extend to the direction opposite with another side, the lower end of upper folding surface It is connected with the upper beveled end of the lower folding surface, upper beveled end continues to the direction extension opposite with another side, so, upper folding surface Inclined degree is less than the inclined degree of the lower folding surface, i.e. the angle of upper folding surface and the lower folding surface is less than 180 degree, such as angle Spending scope can be at 150 degree between 180 degree.The side of each lower concave part 101a is that corresponding upper convex portion 101b is corresponding One side wall, the side of the lower concave part 101a on side is a side wall corresponding to housing 10.

It is provided with and the lower concave part 101a some radiatings correspondingly in the bottom surface of the bottom wall 101 of the housing 10 Fin, the radiator structure then include the described and one-to-one radiating fins of lower concave part 101a, some radiating fins one It is located at the bottom surface of some lower concave part 101a corresponding to one, the length direction of its length direction and the lower concave part 101a is put down OK, and with the lower concave part 101a length match (isometric).Each radiating fin includes recessed corresponding to vertical be connected to First fin 161 of the first long side of portion 101a bottom surface, the bottom surface for being connected to the corresponding lower concave part 101a vertically The second long side the second fin 162, from the lower end of the first fin 161 and/or the second fin 162 to adjacent another The horizontal-extending connection sheet in one radiating fin direction, dissipated to adjacent one with another adjacent radiating fin The connection sheet connection of backing, i.e. be connected with each other or join between per two adjacent radiating fins.Per two adjacent radiating fins Two connection sheets be integrally connected after form a connecting portion 163.The connecting portion 163, adjacent the two of two adjacent radiating fins dissipate The bottom surface of backing and housing 10 encloses to form a heat-dissipating cavity 164, in bottom (each connecting portion of each heat-dissipating cavity 164 163 bottom) one first thermal vias 165 is respectively provided with, the length of first thermal vias 165 is less than the connecting portion 163 Length, i.e., described first thermal vias 165 do not run through the connecting portion 163 from the length direction of the connecting portion 163.Such as This, the intensity of the bottom of housing 10 is enhanced by connecting portion 163, while each heat-dissipating cavity 164 is from both ends and bottom and outside Boundary connects, the radiating efficiency of LED lamp tube 12 corresponding to quickening so that heat transfer is more efficient.

It is also symmetrical in the first fin 161 of each radiating fin and the medial surface of the second fin 162 in the present embodiment Provided with a projection 166, between being smaller than between the fin 162 of the first fin 161 and second between two projections 166 Away from.The wire harness 121 of LED lamp tube 12 in each lower concave part 101a is then clamped in the space on two projection 166.

In the present embodiment, the radiator structure also includes the outer outlet body 18 for covering at the bottom of the housing 10, described outer The lower surface for being connected to corresponding horizontal edge 105 of each sidewalls vertical of cover body 18, the bottom wall of the outer outlet body 18 are located at The lower section of the radiating fin, a fan case 182 is provided with the bottom wall of the outer outlet body 18, in the fan case 182 The scattered gas that hot-swappable fans 183 are provided with that will discharge in the cover body, further increase radiating effect, improve heat conduction efficiency.

Fig. 3 is referred to, as another embodiment, at least one second is offered in the side wall 103 of the housing 10 and is dissipated Heat through-hole 104, the opening position corresponding to second thermal vias 104 in the respective side walls of the outer outlet body 18 offer pair The 3rd thermal vias 181 answered, to make the hot gas in the housing 10 logical from second thermal vias 104 and the 3rd radiating Hole 181 is to flowing to outside the outer outlet body 18.Further optimize, in the side wall of outer outlet body 18 provided with the 3rd thermal vias 181 Space between the side wall 103 of the housing 10 provided with the second thermal vias 104, which also fills up, is provided with ventilation dustproof thing 19, such as Ventilation dustproof layer, ventilation dustproof block etc..The ventilation dustproof thing 19 can for example be adopted (can quickly make air with gas permeability Through) be made of foam or expanded material, its space and shape match with the spatial form.

Fig. 3 is referred to, as another embodiment of LED backlight of the present utility model, is with above-mentioned difference, this reality The bottom wall for applying example is sliceable formation, i.e., is spliced to form by least two groups of lower concave part head and the tail, so so that the LED backlight Source increases or reduced with the shape of corresponding electric installation, so that the LED backlight can adapt to variously-shaped electricity Device.

In the present embodiment, it is described in detail by taking two lower concave parts that two groups of lower concave parts, each group are formed in one as an example.With it is upper Embodiment identical is stated, the upper convex portion is formed between the two neighboring side wall of each group of two lower concave parts, it is described per once Recess structure can be same or similar with above-described embodiment structure, is no longer described in detail one by one herein.

In the present embodiment, because two groups of lower concave parts are one group of the most avris positioned at housing, therefore, two groups of lower concave parts Head end and tail end after end to end can be not provided with splicing construction.In other examples, if above-mentioned two groups of lower concave parts are equal It is not located at one group of the most avris of the housing, as middle groups, then, the head end of each group of lower concave part is that tail end is required to The splicing construction for setting end matching corresponding with another group of adjacent lower concave part to connect.

The splicing construction includes the head end for being arranged on each group of lower concave part and/or tail end is provided with splicing block, used In the clamping part for clamping two adjacent splicing blocks.The upper end of the side wall of the upper end of each splicing block and the lower concave part of corresponding end connects Connect, lower end extends the backward horizontal-extending formation in direction away from another group of lower concave part to be spliced straight down.The clamping part For a dovetail groove, the distance between two roofs of the dovetail groove and the gross thickness for the vertical extension of two splicing blocks mutually spliced Match, the distance between both sides cell wall of the dovetail groove and two horizontal-extending sections of the splicing block of overall elongation length phase Matching.

In the present embodiment, the first splicing is set in the side wall for the lower concave part that first group of lower concave part 20 is located at tail end Block 241, the upper end of first splicing block 241 are connected with the upper end of the side wall of the lower concave part of the tail end, and lower end is prolonged straight down The head end direction for stretching backward first group of lower concave part 20 is horizontal-extending；Adjacent to the of first group of lower concave part 20 tail end The second splicing block 242, the upper end of second splicing block 242 are provided with the side wall of the lower concave part of the head end of two groups of lower concave parts 22 It is connected with the upper end of the side wall of the lower concave part of the head end, lower end extends the tail end of backward second group of lower concave part 22 straight down Direction is horizontal-extending.The distance between two roofs of the dovetail groove 243 and the splicing block of the first splicing block 241 and second The gross thickness of 242 vertical extension matches, the distance between both sides cell wall of the dovetail groove 243 and the described first splicing Horizontal-extending section of overall elongation length of the splicing block 242 of block 241 and second matches.

In certain embodiments, it is provided with the 3rd in the side wall for the lower concave part that first group of lower concave part 20 is located at head end Splicing block, is provided with the 4th splicing block in the side wall for the lower concave part that second group of lower concave part 22 is located at tail end, and described The structure of three splicing blocks and the 4th splicing block and the structure of the splicing block 242 of the first splicing block 241 and second are same or similar, No longer repeat one by one herein.

LED backlight of the present utility model, its bottom set some lower concave parts and some upper convex portions in integral type, if will Dry LED is arranged on each lower concave part position correspondingly, is separated per adjacent two lower concave part by a upper convex portion, reduces Interfering between LED light.Radiated by the radiating fin for being arranged on the bottom of housing 10, and dissipated per adjacent two Hot fin is attached by connecting portion, is formed a both ends and bottom and is respectively provided with the heat-dissipating cavity of radiating port, increases housing 10 Increase radiating effect while intensity efficiently to conduct, the middle part on the inside of two fin of each radiating fin is to relative side Raised to projection one, the upper space raised positioned at this to wire harness is clamped to accommodating wire harness and by the projection, just In the conclusion and clamping of wire harness, make layout more compact and succinct.One outer outlet body is set, and sets and changes in the bottom of outer outlet body Hot-air fan, the hot gas inside and outside housing 10 is more quickly reduced, and set in the side wall of housing 10 and the side wall of outer outlet body Thermal vias, by the convection current of thermal vias by outside the heat derives outer outlet body inside housing 10, in the housing 10 of thermal vias Side wall and outer outlet body side wall between fill ventilation dustproof thing, avoid outside dirt ash to enter housing 10 while heat conduction, it is right Part in housing 10 plays a protective role, and extends the service life of corresponding component.

Embodiment of the present utility model is these are only, not thereby limits the scope of the claims of the present utility model, every profit The equivalent structure or equivalent flow conversion made with the utility model specification and accompanying drawing content, or directly or indirectly it is used in it The technical field of his correlation, is similarly included in scope of patent protection of the present utility model.

Claims (4)

1. a kind of radiator structure of LED backlight, including located at the LED backlight housing bottom some heat radiating fins Piece, it is characterised in that：Some radiating fins are located at the bottom surface of some lower concave parts of the bottom of the housing correspondingly, Its length direction is parallel with the length direction of the lower concave part, and matches with the lower concave part length；Each radiating fin is equal First fin of the first long side of the bottom surface including lower concave part corresponding to being connected to vertically, be connected to vertically it is described corresponding to Second fin of the second long side of the bottom surface of lower concave part, from the lower end of the first fin and/or the second fin to adjacent The horizontal-extending connection sheet in another radiating fin direction, to adjacent one with another adjacent radiating fin The connection sheet connection of individual fin, two connection sheets per two adjacent radiating fins form a connecting portion after being integrally connected；It is described The bottom surface of connecting portion, adjacent two fin and housing encloses to form a heat-dissipating cavity, is all provided with the bottom of each heat-dissipating cavity One first thermal vias is put, the length of first thermal vias is less than the length of the connecting portion；In each radiating fin The medial surface of first fin and the second fin is arranged with one raised, and first radiating is smaller than between two projections Spacing between piece and the second fin, the wire harness of the LED lamp tube in each lower concave part are clamped on two projection In space.

2. the radiator structure of LED backlight as claimed in claim 1, it is characterised in that：Also include covering at the housing The outer outlet body of bottom, the lower surface for being connected to corresponding horizontal edge of each sidewalls vertical of the outer outlet body, the outer cover The bottom wall of body is located at the lower section of the radiating fin, a fan case is provided with the bottom wall of the outer outlet body, in the fan The scattered gas that hot-swappable fans are provided with case that will discharge in the cover body.

3. the radiator structure of LED backlight as claimed in claim 2, it is characterised in that：Also include located at the side of the housing At least one second thermal vias opened up on wall, corresponding to second thermal vias in the respective side walls of the outer outlet body Opening position offers corresponding 3rd thermal vias, so that the hot gas in the housing dissipates from second thermal vias and the 3rd Heat through-hole is to flowing to outside the outer outlet body.

4. the radiator structure of LED backlight as claimed in claim 3, it is characterised in that：Outer provided with the 3rd thermal vias Space between faceshield side wall and the side wall of housing provided with the second thermal vias, which also fills up, is provided with ventilation dustproof thing.