CN205480887U - Heat dissipation device for LED (Light -Emitting diode) illumination - Google Patents

Abstract

The utility model provides a heat dissipation device for LED (Light -Emitting diode) illumination on the basis of ensureing abundant heat dispersion, can reduce manufacturing cost. Heat dissipation device for LED (Light -Emitting diode) illumination (1) has: fin (4) by a plurality of aluminium extrusion type material systems constitute and possess the air cooling formula radiator (3) of regular length and fixed width and set up in a pair of cover (5) of two long lateral margins of radiator (3). Each fin of radiator comprises following part: base plate (7), and a plurality of radiating fin (8), the long limit direction that the radiator is followed to its upper surface at the base plate separates the interval and has stood the integrative formation in form ground, and extends along the width direction of radiator. Become between the adjacent radiating fin of fin along ventilation gap (9) that the width direction of radiator extends. Make whole fin along the long limit direction of radiator configuration side by side, just the lateral margin portion reciprocal anchorage each other of the base plate of adjacent fin to constitute the radiator.

Description

LED illumination heat abstractor

Technical field

This utility model relates to a kind of heat abstractor, uses in plant culture factory and job site In the LED illumination used in searchlight etc., will be produced by the LED used as luminous source Raw heat spreader.

In this specification and claims book, being referred to as Fig. 2, Fig. 3 and Fig. 7 up and down Up and down.

Background technology

Compared with LED illumination and conventional electric filament lamp including the luminous source with LED etc., tool There are the high and low power consumption of luminous efficiency and a bright advantageous feature, but in the prior art, power consumption About 80% has all become heat, it addition, the resin material surrounding LED can deteriorate because of heat, makes Luminous efficiency reduces and the lost of life.Especially at the high consumable electrode type that power consumption is more than 100W In LED illumination, the problems referred to above are the most notable.

Accordingly, as can the heat abstractor that well LED illumination cooled down of efficiency, The applicant first proposed following LED illumination heat abstractor: substrate, it is by heat conductivity Material is constituted, and makes one side become the circuit substrate installed at least one LED circuit substrate Installed surface, and another side becomes smooth thermal conductive surface, is provided with many on LED circuit substrate Individual LED；With the multiple radiating fins on the thermal conductive surface being arranged in substrate, radiating fin is by fixing On the thermal conductive surface of substrate and receive from this thermal conductive surface conduction and come heat heated parts and The heat spreader being provided integrally on heated parts with top standing shape and will be conducted by heated parts Radiating part constitute, multiple radiating fins are fixed in the way of radiating part interval spaced from one another On substrate, and being provided with heat pipe portion on the radiating part of radiating fin, this heat pipe portion passes through Hollow form working solution is enclosed working solution in enclosing loop and is arranged (with reference to patent documentation 1).

The heat abstractor recorded according to patent documentation 1, owing to make use of hot conveying function excellence Heat pipe, it is possible to imitate the LED of the LED circuit substrate on the thermal conductive surface being arranged on substrate Rate cools down well.But, in the heat abstractor that patent documentation 1 is recorded, due in heat radiation The radiating part of fin is provided with in hollow form working solution encloses loop, encloses working solution Thus the heat pipe portion formed, so manufacturing cost becomes higher.

Prior art literature

Patent documentation

Patent documentation 1: Japanese Unexamined Patent Publication 2014-194919 publication

Utility model content

The purpose of this utility model is, solves the problems referred to above, it is provided that a kind of LED illumination is used Heat abstractor, on the basis of guaranteeing sufficient heat dispersion, with patent documentation 1 record LED illumination heat abstractor compares, it is possible to make manufacturing cost reduce.

To achieve these goals, this utility model is made up of in the following manner.

1) a kind of LED illumination heat abstractor, it has: by multiple aluminium extruded sections Fin constitutes and possesses the air-cooled type radiator of regular length and fixed width and be arranged at scattered A pair cover of two long lateral margins of hot device, above-mentioned LED illumination heat abstractor is characterised by,

Each fin of radiator is made up of such as lower component:

Substrate；And

Multiple radiating fins, it is along the long side direction interval of radiator and standing shape ground one It is formed at the upper surface of substrate, and along the width extension of radiator,

The width extension along radiator is become between the adjacent radiating fin of fin Ventilation gap, makes whole fin configure side by side along the long side direction of radiator, and adjacent dissipating The side edge part of the substrate of backing is fixed each other, thus constitutes radiator,

Lower surface at the substrate of each fin of radiator is provided with at least one LED electricity The circuit substrate installation portion that base board is installed, this LED circuit substrate is provided with for multiple LED,

The substrate of whole fin of radiator is fixed with two covers,

Two covers are formed with the vent connected respectively with the ventilation gap of fin.

2) above-mentioned 1) the LED illumination heat abstractor recorded, wherein,

Covering at two, the long side direction along radiator is formed at spaced intervals and dispels the heat respectively The vent that the quantity of sheet is identical, and make whole ventilation gaps of each vent and each fin The part between adjacent vent in connection, and two covers becomes the portion of becalming, above-mentioned portion of becalming Prevent from flowing between the air close radiating fin between adjacent fin.

3) above-mentioned 1) the LED illumination heat abstractor recorded, wherein,

In the lower end of each cover, not arrange with in the way of the circuit substrate installation portion interference of fin Other cover sides oriented highlight and support the abutment wall of whole fin.

4) above-mentioned 1) the LED illumination heat abstractor recorded, wherein,

Setting near the side edge part interfixed in the substrate of two adjacent fin There is concavo-convex fitting portion.

5) above-mentioned 4) the LED illumination heat abstractor recorded, wherein,

The side edge part side interfixed in the upper surface of the substrate of two adjacent fin End be provided integrally with portion protruding above, in substrate protruding above of the fin of a side Portion is provided with fitting projection on the face of the fin side of the opposing party, dissipating the opposing party The portion protruding above of the substrate of backing is provided with confession on the face of the fin side of a side The chimeric recess that fitting projection is chimeric, is constituted concavo-convex fitting portion by fitting projection and chimeric recess.

6) above-mentioned 1) the LED illumination heat abstractor recorded, wherein,

The side edge part of the substrate of two adjacent fin is mutually bonded each other by bonding agent.

7) above-mentioned 1) the LED illumination heat abstractor recorded, wherein,

The upper end in the portion of respectively becalming of two covers is each other by being provided integrally on two covers Linking part links.

The effect of utility model

According to above-mentioned 1)～7) LED illumination heat abstractor, owing to having: by multiple aluminum The fin of extrudate constitutes and possesses the air-cooled type heat radiation of regular length and fixed width Device and be arranged at a pair cover of two long lateral margins of radiator, each fin of radiator is by as follows Parts are constituted: substrate；And multiple radiating fin, between it separates along the long side direction of radiator Every and standing shape be integrally formed in the upper surface of substrate, and prolong along the width of radiator Stretch, between the adjacent radiating fin of fin, become the logical of the width extension along radiator Wind gap, makes whole fin configure side by side along the long side direction of radiator, and adjacent heat radiation The side edge part of the substrate of sheet is fixed each other, thus constitutes radiator, and each at radiator dissipates The lower surface of the substrate of backing is provided with the circuit base installed at least one LED circuit substrate Plate installation portion, this LED circuit substrate is provided with multiple LED, in whole heat radiations of radiator Be fixed with two covers on the substrate of sheet, two covers are formed respectively with the ventilation cell of fin The vent of gap connection, so by the circuit substrate installation portion of the substrate being installed on each fin After the heat that the LED of LED circuit substrate the sends substrate via each fin, conduction is to dissipating Hot fin, by free convection, and rejects heat to the air of low temperature flow through from ventilation gap. Further, owing to being arranged at the ventilation gap between the adjacent radiating fin of each fin of radiator Width along radiator extends, so arrange from the long side direction central part at radiator The LED of the LED circuit substrate installed on the circuit substrate installation portion of the substrate of fin sends Heat dispelled the heat the most efficiently, it is possible to efficiently by the LED from all LED circuit substrates The heat spreader sent.Such as, radiator is made up of an aluminium extruded section fin, dissipates Backing is integrally formed in by substrate with along the width interval of radiator and standing shape The upper surface of substrate and multiple radiating fins composition of the long side direction extension along radiator, and The ventilation of the long side direction extension along radiator is become between the adjacent radiating fin of fin In the case of gap, due to free convection, the air of low temperature is difficult in flow to the long limit of ventilation gap The central part in direction, so the temperature near the central part of the long side direction of radiator is than other portions Divide and uprise, as a result of which it is, from the heat dispersion near the central part of the long side direction of radiator Reduce, it is impossible to the heat that will send from the overall LED being installed on LED circuit substrate efficiently Amount heat radiation.

Become between the adjacent radiating fin of each fin being additionally, since radiator along heat radiation The ventilation gap that the width of device extends, it is possible to by the long limit of the radiator in fin The size in direction contracts shorter.Therefore, it is possible to by fin simply extrusion molding, with The LED illumination heat abstractor that patent documentation 1 is recorded compares, and manufacturing cost becomes cheap. It is also contemplated for making radiator entirety be formed by a following fin: it is by substrate and multiple heat radiation Fin is constituted, and multiple radiating fins are along the long side direction interval of radiator and standing shape ground one Body is formed between the upper surface of substrate, and the adjacent radiating fin of fin to be become along heat radiation The ventilation gap that the width of device extends, but in this case, it is impossible to extrusion molding goes out base The fin that plate size on the long side direction of radiator is big, so being not applied for having ratio The LED illumination of bigger LED circuit substrate.

It addition, all fin configures side by side along the long side direction of radiator and adjacent dissipates The side edge part of the substrate of backing is fixed each other, thus constitutes radiator, so constituting heat radiation The operation of device is easy, and radiator can be made to have the formations as LED illumination The high intensity of part.

It is additionally, since two covers to be fixed on the substrate of whole fin of radiator, so also The fixing intensity of whole fin can be made to increase by cover.

According to above-mentioned 2) LED illumination heat abstractor, it is possible to prevent the ventilation at fin Gap flowing and contribute to the reduction of air capacity of low temperature of heat radiation, it is possible to will be by LED The heat that the LED of circuit substrate sends dispels the heat efficiently.I.e., it is believed that at the substrate of radiator In adjacent fin between close radiating fin between there is not radiating fin, even if Make air flow in this part, there will not be and help heat radiation.But, above-mentioned 2) LED In illumination heat abstractor, prevent owing to the part between the adjacent vent in two covers becomes The portion of becalming of flowing between the air close radiating fin between adjacent fin, so The air preventing low temperature is not contributing to the part flowing of heat radiation such that it is able to prevent in heat radiation The ventilation gap flowing of sheet and contribute to the reduction of air capacity of low temperature of heat radiation, it is possible to high The heat spreader that LED from LED circuit substrate is sent by effect ground.

According to above-mentioned 3) LED illumination heat abstractor, in the lower end of each cover, with not with dissipate The mode that the circuit substrate installation portion of backing is interfered arranges other cover sides oriented and highlights and support complete The abutment wall of portion's fin, it is possible to prevent the broken of adjacent fin fixed part each other Damage.

According to above-mentioned 4) LED illumination heat abstractor, it is possible to carry out adjacent two simply The location of individual fin.

According to above-mentioned 5) LED illumination heat abstractor, it is possible to make concavo-convex fitting portion simpler The vicinity of the side edge part mutually abutted singly being arranged in the substrate of adjacent two fin.

According to above-mentioned 7) LED illumination heat abstractor, it is possible to make two cover integration, institute So that the assembleability of this heat abstractor improves.

Accompanying drawing explanation

Fig. 1 is the LED illumination heat abstractor representing embodiment 1 of the present utility model The axonometric chart being monolithically fabricated.

Fig. 2 is the line A-A amplification view of Fig. 1.

Fig. 3 is the front view of the radiator of the LED illumination heat abstractor representing Fig. 1.

Fig. 4 is the upward view of the radiator of the LED illumination heat abstractor representing Fig. 1.

Fig. 5 is the office of the variation of the radiator of the LED illumination heat abstractor representing Fig. 1 Portion's enlarged front view.

Fig. 6 is the LED illumination heat abstractor representing embodiment 2 of the present utility model The axonometric chart being monolithically fabricated.

Fig. 7 is the line B-B amplification view of Fig. 6.

Detailed description of the invention

Hereinafter, it is explained with reference to embodiment of the present utility model.

In the following description, term " aluminum " the most also includes aluminium alloy.

It addition, in the following description, the left and right of Fig. 3 is referred to as left and right, and by a left side of Fig. 2 Right direction (above-below direction of Fig. 4) is referred to as fore-and-aft direction.

It addition, in all of the figs, for using same accompanying drawing with a part of and same parts Labelling.

Embodiment 1

This utility model is as shown in Figure 1 to 4.

Fig. 1 represents being monolithically fabricated of the LED illumination heat abstractor of embodiment 1, Fig. 2 Represent the structure of its major part.It addition, Fig. 3 and Fig. 4 represents the LED illumination of Fig. 1 The radiator used with heat abstractor.

In Fig. 1 and Fig. 2, LED illumination heat abstractor 1 has: heat abstractor main body 2, it is made up of air-cooled type radiator 3 and a pair cover 5；And sprung parts 6, it is arranged In heat abstractor main body 2, radiator 3 is made up of multiple aluminium extruded section fin 4, and At left and right directions, there is regular length and at fore-and-aft direction, there is fixed width, overlook under in Oblong-shaped, a pair cover 5 is arranged on two long lateral margins before and after radiator 3.

As shown in Figure 3 and 4, each fin 4 of radiator 3 is by horizontal substrate 7 And multiple radiating fin 8 is constituted, this radiating fin 8 at the upper surface of substrate 7 along radiator It is integrally formed and along the width side of radiator 3 the long side direction interval of 3 and standing shape To extension.The width side along radiator 3 is become between the adjacent radiating fin 8 of fin 4 To the ventilation gap 9 extended.At the lower surface of the substrate 7 of each fin 4, at least provided with One, be a circuit substrate installation portion 12 installed for LED circuit substrate 11 at this.And And, whole fin 4 (long side direction of radiator 3) in left-right direction configure side by side, and And make the side edge part of the substrate 7 of adjacent fin 4 against each other and interfix, thus structure Become radiator 3.The side edge part of the substrate 7 of adjacent fin 4 is each other by such as Henkel (Henkel) epoxy resin (epoxy paste) bonding agent (trade name of society HysolEA9394) bonding.

Two covers 5 are such as formed by aluminum, the interval in left-right direction in bottom Multiple positions, are fixed on by screw 13 before and after the substrate 7 of fin 4 on two sides.? On two covers 5, the long side direction along radiator 3 is formed and fin at spaced intervals respectively The vent 14 that the quantity of 4 is identical, and make the whole of each vent 14 and each fin 4 Ventilation gap 9 connects.The part between adjacent vent 14 in two covers 5 becomes anti- The only portion of becalming of flowing between the air close radiating fin 8 between adjacent fin 4 15.And, in the lower end of each cover 5, with not with the circuit substrate installation portion 12 of fin 4 The mode interfered arranges oriented other and covers the supporting that 5 sides highlight and support whole fin 4 Wall 5a.

Sprung parts 6 is made up of such as lower component: the lateral suspension portion 16 of horizontal tabular, it is by example As aluminum is formed, and so that long side direction is towards between separating under the state of the long side direction of radiator 3 The top of heat abstractor main body 2 it is arranged in every ground；The arm 17 of vertical plate, it sets integratedly It is placed in the long side direction both ends of suspension part 16 and extends downwards, and bottom is fixed on scattered Thermal main body 2.The bottom in wall portion 17 at multiple positions of interval along the longitudinal direction, By the suitable means of screw 18 grade, it is fixed on the substrate 7 of the fin 4 at two ends, left and right In the face towards left and right directions foreign side.

The circuit of substrate 7 at each fin 4 constituting radiator 3 of heat abstractor main body 2 On substrate installation portion 12 install LED circuit substrate 11 on, be configured be provided with not shown Multiple LED component of LED, and by all LED circuit substrates 11 and be configured at The Switching Power Supply of not shown part is constituted cultivates illuminator as plant culture factory LED illumination 19.It addition, Switching Power Supply is the most also installed on sprung parts 6.And, utilize Sprung parts 6, LED illumination by heat abstractor 1 and LED illumination 19 from plant culture work The roofs of factory etc. hang and cultivation illuminator as plant uses.

In above-mentioned LED illumination heat abstractor 1, send from the LED of LED illumination 19 Heat conduct to the substrate 7 of each fin 4 via LED circuit substrate 11, conduction extremely Radiating fin 8, by free convection, is rejected heat to from ventilation gap by the blow vent of cover 5 In the air of 9 low temperature flow through.Further, owing to being arranged at whole fin 4 of radiator 3 Adjacent radiating fin 8 between ventilation gap 9 along radiator 3 width extend, So the circuit of the substrate 7 from the fin 4 of the long side direction central part setting at radiator 3 The heat that the LED of the LED circuit substrate 11 installed on substrate installation portion 12 sends is the most efficient Ground is dispelled the heat, it is possible to efficiently by from whole LED circuit substrates 11 of LED illumination 19 The heat spreader that LED sends.

Fig. 5 represents the variation of the radiator that LED illumination heat abstractor used.

In Figure 5, the lateral margin against each other in the substrate 7 of two adjacent fin 4 Concavo-convex fitting portion 20 it is provided with near portion.Substrate 7 upper at two adjacent fin 4 The end of the side edge part side against each other in surface, is provided integrally with portion 7a protruding above, The heat radiation towards the opposing party in the portion 7a protruding above of the substrate 7 of the fin 4 of a side It is provided with fitting projection 21, in substrate 7 upper of the fin 4 of the opposing party on the face of sheet 4 side Being provided with for fitting projection 21 on the face of fin 4 side of a side in side protuberance 7a Chimeric chimeric recess 22, is constituted concavo-convex fitting portion by fitting projection 21 and chimeric recess 22 20。

Embodiment 2

Present embodiment is as shown in Fig. 6 and Fig. 7.

Fig. 6 represents the overall structure of LED illumination heat abstractor of the present utility model, Fig. 7 Represent the structure of its major part.

In the LED illumination shown in Fig. 6 and Fig. 7 with in heat abstractor 30, two are covered 5 Upper end links up each other by the upper cover 31 being integrally provided to two covers 5.In upper cover On 31, the long side direction along radiator 3 is formed with the quantity phase with fin 4 at spaced intervals Same vent 32, and make whole ventilation gaps 9 of each vent 32 and each fin 4 Connection.The upper end in the portion of becalming 15 of two covers 5 is each other by the phase being arranged in upper cover 31 The adjacent linking part 33 between vent 32 links.It addition, with the left and right of radiator cover 3 The mode at the both ends of both ends and two covers 5 is configured with guard block 34.Guard block 34 is square plate-like, by the main part 34a of vertical plate, is arranged at main part 34a periphery In the lateral direction in side prominent wall 34b constitute.Prominent wall 34b is formed along fin The lower surface of the substrate 7 of 4, the outer surface of former and later two covers 5 and former and later two covers 5 The lower surface of abutment wall 5a, the following table of the substrate 7 along fin 4 in prominent wall 34b The part in face is fixed on substrate 7 times by the suitable means of screw element (omitting diagram) etc. Surface.It addition, omit the diagram of the screw element of the substrate 7 that cover 5 is fixed on fin 4.

The top of the arm 17 of sprung parts 6 be provided with upward and in the lateral direction in The rake 17a that side tilts, the two ends, left and right of suspension part 16 link with the upper end of rake 17a. Protection is fixed on by the suitable means of screw element (omitting diagram) etc. in the bottom of arm 17 The main part 34a of parts 34.Lower surface in the suspension part 16 of sprung parts 6 is provided with out Close power supply 35.

Other structures are identical with the LED illumination heat abstractor 1 of embodiment 1.

Industrial applicibility

Based on LED illumination heat abstractor of the present utility model for shining at high consumable electrode type LED Bright middle the thermal efficiency sent from LED is dissipated well.

Claims (7)

1. a LED illumination heat abstractor, it has: by multiple aluminium extruded sections Fin constitutes and possesses the air-cooled type radiator of regular length and fixed width and be arranged at A pair cover of two long lateral margins of radiator, described LED illumination heat abstractor is characterised by,

Each fin of radiator is made up of such as lower component:

Substrate；And

Multiple radiating fins, it is along the long side direction interval of radiator and standing shape ground one Body is formed at the upper surface of substrate, and along the width extension of radiator,

The width extension along radiator is become between the adjacent radiating fin of fin Ventilation gap, makes whole fin configure side by side along the long side direction of radiator, and adjacent The side edge part of the substrate of fin is fixed each other, thus constitutes radiator,

Lower surface at the substrate of each fin of radiator is provided with at least one LED electricity The circuit substrate installation portion that base board is installed, this LED circuit substrate is provided with multiple LED,

The substrate of whole fin of radiator is fixed with two covers,

Two covers are formed with the vent connected respectively with the ventilation gap of fin.

LED illumination heat abstractor the most according to claim 1, wherein,

Covering at two, the long side direction along radiator is formed at spaced intervals and dissipates respectively The vent that the quantity of backing is identical, and make each vent ventilate with the whole of each fin Gap connects, and the part between the adjacent vent in two covers becomes the portion of becalming, described The portion of becalming prevents from flowing between the air close radiating fin between adjacent fin.

LED illumination heat abstractor the most according to claim 1, wherein,

In the lower end of each cover, not set with in the way of the circuit substrate installation portion interference of fin It is equipped with abutment wall that is prominent to other cover sides and that support whole fin.

LED illumination heat abstractor the most according to claim 1, wherein,

Setting near the side edge part interfixed in the substrate of two adjacent fin There is concavo-convex fitting portion.

LED illumination heat abstractor the most according to claim 4, wherein,

The side edge part side interfixed in the upper surface of the substrate of two adjacent fin End be provided integrally with portion protruding above, prominent above the substrate of the fin of a side Go out and portion is provided with fitting projection, the opposing party on the face of the fin side of the opposing party Being provided with on the face of the fin side of a side in the portion protruding above of the substrate of fin For the chimeric recess that fitting projection is chimeric, it is made up of concavo-convex chimeric fitting projection and chimeric recess Portion.

LED illumination heat abstractor the most according to claim 1, wherein,

The side edge part of the substrate of two adjacent fin is mutually bonded each other by bonding agent.

LED illumination heat abstractor the most according to claim 1, wherein,

The upper end in the portion of respectively becalming of two covers is each other by being provided integrally on two covers Linking part links.