CN103363401B - LED projection lamp - Google Patents

LED projection lamp Download PDF

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Publication number
CN103363401B
CN103363401B CN201310282374.2A CN201310282374A CN103363401B CN 103363401 B CN103363401 B CN 103363401B CN 201310282374 A CN201310282374 A CN 201310282374A CN 103363401 B CN103363401 B CN 103363401B
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China
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heat pipe
described
heat
shaped
inner chamber
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CN201310282374.2A
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Chinese (zh)
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CN103363401A (en
Inventor
李克勤
陈宏杰
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中山伟强科技有限公司
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Publication of CN103363401A publication Critical patent/CN103363401A/en
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Abstract

The invention discloses an LED projection lamp which comprises a cylindrical heat dissipation device, a lamp cup, an LED module, a lens, a first heat conduction set, a fixing device and a second heat conduction set, wherein the cylindrical heat dissipation device is provided with a horn-shaped inner chamber at the front end inside the inner chamber of the heat dissipating device and a cylindrical inner chamber at the rear end inside the inner chamber of the heat dissipating device; the lamp cup is arranged inside the horn-shaped inner chamber; the LED module is positioned at the small opening part of the lamp cup; the lens is used for light-transmitting of the LED module; the first heat conduction set comprises a plurality of U-shaped first heating pipes, U-shaped middle sections of the U-shaped first heating pipes form a smooth face for supporting the LED module, and the U-shaped ends are positioned between the outer wall of the lamp cup and the wall surface of the horn-shaped inner chamber and jointed mutually; the fixing device is sleeved with the rear end of the cylindrical inner chamber; the second heat conduction set comprises a plurality of U-shaped second heating pipes, the U-shaped middle sections of the heating pipes are in contact with the U-shaped middle sections of the first heating pipes, and the U-shaped ends of the second heating pipes are sleeved with the outer side of the fixing device and are in fit with the cylindrical inner chamber. According to the invention, mutual matching of the two heat conduction sets are adopted so as to enable the heat conduction efficiency of the LED projection lamp to be kept in a sufficient height and ensure that the LED lamp irradiates in any directions, and the two heat conduction sets have excellent heat dissipation effects.

Description

A kind of LED projection lamp

Technical field

The application is patent (patent name: a kind of LED projection lamp applying date 2012-03-02 application number: divisional application 201210052973.0).

Technical field

The present invention relates to a kind of shot-light, particularly relate to a kind of LED projection lamp.

Background technology

LED projection lamp is again line style LED projection lamp etc., because its profile is strip, also has people that it is called LED line, is also mainly to do place, building decoration illumination, sketches the contours the use of profile in building, place.The application of LED projection lamp is comparatively various, therefore its direction of illumination also requires comparatively flexible, frequent needs are according to place or need in real time and adjust direction of illumination, and LED projection lamp be in different directions irradiate time, will certainly on its produce heat route of transmission affect to some extent, in some direction, serious meeting occurs that heat cannot effectively shed, the situation that heat accumulation is too much, affects dependability and the life-span of LED projection lamp.The heat-sinking capability of LED lamp self, whether stablize with its work, quality quality, whether the life-span is closely bound up for a long time, and for requiring the LED projection lamp of high brightness, because it produces heat and more, and changeable irradiation environment, the heat dispersion of self is most important especially, therefore, how relevant LED projection lamp realizes preferably dispelling the heat when different angles direction, to be unlikely to cause direction of illumination to affect heat dispersion, realize arbitrarily angled can Homogeneouslly-radiating, can be described as the technical problem of very necessary solution.

Summary of the invention

The technical problem to be solved in the present invention is to provide a kind of perfect heat-dissipating, and all can realize the LED projection lamp of efficiently radiates heat when different angles.

The technical solution adopted for the present invention to solve the technical problems is:

A kind of LED projection lamp, comprising:

One heat abstractor, in a tubular, its tubular periphery has radiator structure, is formed with one by the interior horn-like inner chamber expanded gradually in its tubular inner chamber front end outwardly;

One Lamp cup, in the horn-like inner chamber of described heat abstractor match tubaeform, have large oral area and little oral area, this large oral area is placed in the outer, front end of described heat abstractor, and this little port part is in the inner chamber of described heat abstractor;

One LED module, is positioned at the little oral area place of described Lamp cup;

One lens, for supplying LED module printing opacity, it is fixed on the front end of described heat abstractor by a retainer ring;

One first heat transfer group, comprise the first heat pipe of a plurality of bending that takes the shape of the letter U, wherein the U-shaped stage casing of this plural first heat pipe pieces together a burnishing surface mutually to support fixing described LED module, the U-shaped end of this plurality of first heat pipe is placed on outside described Lamp cup, and fits with the horn-like inner chamber wall of described heat abstractor;

One fixture, in a cylinder or cylindric, it is placed on the cylindrical inner chamber of described heat abstractor;

One second heat transfer group, comprise the second heat pipe of a plurality of bending that takes the shape of the letter U, wherein this plural second heat pipe the mutual split in U-shaped stage casing and contact with the U-shaped stage casing of described first heat pipe, the U-shaped end of this plurality of second heat pipe is placed on outside described fixture, and fits with the tubular inner chamber wall of described heat abstractor;

One fixed head, on rear side of the burnishing surface being positioned at described a plurality of first heat pipe, supports and secures the above the U-shaped stage casing of the first heat pipe and the U-shaped stage casing of the second heat pipe;

Total heat radiation power sum of wherein said first heat transfer group and the second heat transfer group is more than or equal to the power that described LED module will distribute,

Also be provided with the second fixed head on rear side of the U-shaped stage casing of wherein said second heat pipe, this second fixed head supports the U-shaped stage casing securing the above the second heat pipe; Described second fixed head front is provided with the fixing lines of the U-shaped stage casing matching form of the second heat pipe, fixes the U-shaped stage casing of the second heat pipe 81 for holding.

As the further improvement of such scheme, the first heat transfer group also comprises the 3rd horizontal heat pipe that at least one bending is surrounded on described Lamp cup periphery; Described Lamp cup outer wall is provided with the 3rd groove of accommodating described 3rd horizontal heat pipe; Wherein the 3rd groove is arc-shaped, and the side that described 3rd horizontal heat pipe and the 3rd groove fit should be arc surface mutually; Contact inside the U-shaped end of the outside of described 3rd horizontal heat pipe and the horn-like inner chamber wall of described heat abstractor and described first heat pipe.

As the further improvement of such scheme, described second heat transfer group also comprises the 4th horizontal heat pipe that at least one bending is surrounded on described fixture periphery; Described fixture outer wall is provided with the 4th groove of accommodating described 4th horizontal heat pipe; Contact outside described 4th horizontal heat pipe with inside the tubular inner chamber wall of described heat abstractor and the U-shaped end of described second heat pipe.

As the further improvement of such scheme, the wall of the horn-like inner chamber of described heat abstractor offers a plurality of first groove vertically, and the U-shaped end of described first heat pipe matches and is closely mounted in this first groove, reaches Homogeneouslly-radiating object; Wherein this first groove is arc-shaped, and the side that described first heat pipe and the first groove fit should be arc surface mutually.

As the further improvement of such scheme, the wall of the tubular inner chamber of described heat abstractor offers a plurality of second groove vertically, and the U-shaped end of described second heat pipe matches and is closely mounted in this second groove, reaches Homogeneouslly-radiating object; Wherein this second groove is arc-shaped, and the side that described second heat pipe and the second groove fit should be arc surface mutually.

As the further improvement of such scheme, wherein said fixed head is between the U-shaped stage casing of described first heat pipe and the U-shaped stage casing of described second heat pipe, the front of this fixed head is provided with and fixes lines with first of the U-shaped stage casing matching form of described first heat pipe, for fixing the U-shaped stage casing of this first heat pipe, the back side of this fixed head is provided with and fixes lines with second of the U-shaped stage casing matching form of described second heat pipe, for fixing the U-shaped stage casing of this second heat pipe, wherein this first fix lines and second fix arrange between lines porose, making can perpendicular contact mutually up and down by the U-shaped stage casing of the U-shaped stage casing of the first heat pipe that fixes and the second heat pipe, to reach optimization heat conduction situation.

Further, outer, wherein said heat abstractor front end is provided with outward flange, and described retainer ring is installed on this outward flange.

Further, wherein said lens are Fresnel Lenses.

Further, wherein said retainer ring is equipped with the transmissive mirror covering described lens.

Beneficial effect of the present invention: LED projection lamp of the present invention, the heat transfer group that system have employed heat pipe carries out heat conduction to LED module, this type of heat transfer group can pass through internal work medium, realize efficient heat exchange, therefore, it is possible to fast by the heat conduction of LED module to heat abstractor, Lamp cup and fixture place, shed the heat of LED module timely and effectively, reaches excellent radiating effect;

Because the heat transfer group of heat pipe realizes quick conductive by working media, it operationally has directionality, therefore when LED projection lamp irradiates work in different directions, the heat conductivility of heat transfer group can be affected, be directed to this, the present invention adopts two groups of heat transfer groups, i.e. the first heat transfer group and the second heat transfer group, before laying respectively at thermal source and LED module, rear side, like this when LED projection lamp is irradiated upward, the radiating efficiency of the first heat transfer group reaches best, play main heat sink effect, and when LED projection lamp is irradiated down, second heat transfer group radiating efficiency reaches best, play main heat sink effect, first, second heat transfer group visible cooperatively interacts, and the heat conduction efficiency of LED projection lamp can be made to remain at enough height, ensures that LED projection lamp is irradiated in any direction, all possesses splendid radiating efficiency.

Accompanying drawing explanation

In order to be illustrated more clearly in the technical scheme in the embodiment of the present invention, below the accompanying drawing used required in describing embodiment is briefly described.Obviously, described accompanying drawing is a part of embodiment of the present invention, instead of whole embodiments, those skilled in the art under the prerequisite not paying creative work, other designs that can also obtain according to these accompanying drawings and accompanying drawing.

Fig. 1 is perspective view of the present invention;

Fig. 2 is sectional view of the present invention;

Fig. 3 is fractionation structural representation of the present invention;

Fig. 4 is the cross-sectional view of heat abstractor in the present invention;

Fig. 5 is the cross-sectional view of Lamp cup in the present invention;

Fig. 6 is the structural representation of a plurality of first heat pipe in the present invention;

Fig. 7 is the structural representation of a plurality of second heat pipe in the present invention;

Fig. 8 is the cross-sectional view of the first heat pipe U-shaped end in the present invention;

Fig. 9 is the cross-sectional view in the first heat pipe U-shaped stage casing in the present invention;

Figure 10 is the structural representation of fixed head in the present invention;

Figure 11 is the Facad structure schematic diagram of fixed head in the present invention;

Figure 12 is the structural representation that the present invention is irradiated down;

Figure 13 is the structural representation that the present invention is irradiated upward;

Figure 14 is the equivalent heat dissipation path schematic diagram in the present invention.

Detailed description of the invention

Be clearly and completely described below with reference to embodiment and the accompanying drawing technique effect to design of the present invention, concrete structure and generation, to understand object of the present invention, characteristic sum effect fully.Obviously; described embodiment is a part of embodiment of the present invention, instead of whole embodiment, based on embodiments of the invention; other embodiments that those skilled in the art obtains under the prerequisite not paying creative work, all belong to the scope of protection of the invention.

With reference to Fig. 1, Fig. 2 and Fig. 3, LED projection lamp of the present invention, primary structure comprises heat abstractor 1, Lamp cup 2, LED module 3, lens 4, first heat transfer group 5, fixed head 6, fixture 7 and the second heat transfer group 8.

Heat abstractor 1 is wherein in a tubular, as shown in Figure 4, heat abstractor 1 has tubular inner chamber 12, in tubular periphery, there is radiator structure 13, radiator structure 13 can be radiating fin or the heat dissipation channel that can produce stack effect, and the direction of this radiator structure 13 is modal can along the axial extension of tubular; In tubular inner chamber 12 front end of heat abstractor 1, be formed with one by the interior horn-like inner chamber 11 expanded gradually outwardly, outwardly, osculum is then combined with tubular inner chamber 12 the large mouth of this horn-like inner chamber 11 inwardly inwardly.

Lamp cup wherein 2 in the horn-like inner chamber 11 of heat abstractor 1 match tubaeform, as shown in Figure 5, Lamp cup 2 has large oral area 21 and little oral area 22, this large oral area 21 is placed in the outer, front end of heat abstractor 1, just the horn-like large mouth of heat abstractor 1 is covered, this little oral area 22 is positioned at tubular inner chamber 12 place of heat abstractor 1, may extend into the horn-like osculum place of heat abstractor 1 and is covered.

LED module 3 is wherein positioned at the tubular inner chamber 12 of heat abstractor 1, and be positioned at little oral area 22 place of Lamp cup 2, the light emission direction of this LED module 3 is towards the large oral area 21 of Lamp cup 2, and the light so sent can penetrate from Lamp cup 2, and Lamp cup also serves the effect of reflecting condensation simultaneously.

Lens 4 are wherein for supplying LED module 3 printing opacity, these lens 4 are fixed on the front end of heat abstractor 1 by retainer ring 41, the large mouth of heat abstractor 1 and the large oral area 21 of Lamp cup 2 are covered, the light that such LED module 3 sends, can unify to penetrate after lens 4, namely lens 4 reach the effect of boundling light.For ease of clamping of lens 4, and reserve the fixing fit structure for the external world, can arrange outward flange 14 in the outer, front end of heat abstractor 1, retainer ring 41 is installed on outward flange 14, is locked by lens 4; Lens 4 of the present invention are preferably Fresnel Lenses, and its one side is light face, the ascending concentric circles of another side imprinting, entirety is thinner, the assembling of other structures of projecting lamp can not be affected, better printing opacity and focussing force can be played simultaneously, therefore be suitable for projecting lamp and use; Certainly according to different application requirement, the optical mirror slip such as convex lens, concavees lens can also be adopted.When adopting Fresnel Lenses, in order to protect lens 4 and internal structure, and it is dust-proof to realize water-tight, holding the transmissive mirror 42 stating lens 4 can also be covered on retainer ring 41, so be equivalent to transmissive mirror 42 and be positioned at outermost layer, can be arrived by people's direct viewing, inner side is then lens 4, interior, is LED module 3; In practical structures, can a circle annular slot be set inside retainer ring 41, fixes transmissive mirror 42 for holding.

In LED module 3 course of work, heat can be produced, in optimal situation, these caloric requirements are delivered to heat abstractor 1 timely, shed in time by the radiator structure 13 of heat abstractor 1, for as much as possible close to ideal situation, present invention employs the first heat transfer group 5 and the second heat transfer group 8.

As shown in Figure 6, first heat transfer group 5 mainly comprises a plurality of first heat pipe 51, this a plurality of first heat pipe 51 all takes the shape of the letter U bending, so each first heat pipe 51 is just divided into a U-shaped stage casing and two U-shaped ends, certainly, first heat pipe 51 of a U-shaped, can be bent by single heat pipe and form, also can be that two L shape heat pipes are put together, the mutual split in U-shaped stage casing of a plurality of first heat pipe 51 together, forms a burnishing surface 52, and this burnishing surface 52 fixes LED module 3 for supporting, with LED module 3 good contact, and then can transferring heat fast, relative to the burnishing surface 52 that U-shaped stage casing forms, the U-shaped end of a plurality of first heat pipe 51 is co-located at the same side of this burnishing surface 52, and disperse in horn-like, to be matched with the shape of the horn-like inner chamber 11 of Lamp cup 2 and heat abstractor 1, in installation cooperation structure in structure, the U-shaped end of a plurality of first heat pipe 51 is placed on outside Lamp cup 2, and fit with the wall of the horn-like inner chamber 11 of heat abstractor 1, heat when LED module 3 is worked, the burnishing surface 52 that can be formed by the first heat pipe 51, be delivered to rapidly each U-shaped end, and horn-like inner chamber 11 and the Lamp cup 2 of heat abstractor 1 is delivered to rapidly by U-shaped end, to be shed by heat abstractor 1 and Lamp cup 2.

As shown in Figure 8, heat pipe is the heat conducting element in inside with groove and sintering capillary structure, it is by gas, liquid two phase change of internal work liquid, and capillary force reaches heat transfer effect, and basic structure is round tube, in the inventive solutions, the equal split in U-shaped stage casing of each first heat pipe 51 forms burnishing surface 52 together, then accordingly, each first heat pipe 51 U-shaped stage casing coordinates the one side also repressed process of burnishing surface 52, becoming as shown in Figure 9, is the structure flattened in side.In addition in a preferred embodiment of the invention, in order to be matched with the shape of the U-shaped end of each first heat pipe 51, a plurality of first groove 15 is equidistantly offered vertically at the wall of the horn-like inner chamber 11 of heat abstractor 1, be used for the U-shaped end of each first heat pipe 51 of accommodating cooperation, the U-shaped end of the first heat pipe 51 is matched and is closely mounted in corresponding first groove 15, wherein should notice that the first groove 15 is in arc-shaped, be formed with the groove of circular arc degree, and the side that the first heat pipe 51 and the first groove 15 fit should be arc surface mutually, for the shape after itself making, therefore unnecessary this side to be reprocessed.

Due to the U-shaped end of a plurality of first heat pipe 51 and horn-like inner chamber 11 and Lamp cup 2 outer wall joint place, the whole wall of horn-like inner chamber 11 or Lamp cup 2 outer wall can not be covered completely, in conduction process, be distributed to heat abstractor 1 and Lamp cup 2 heat can be even not, affect radiating efficiency, the present invention is for solving this problem, also increase at least one 3rd horizontal heat pipe 53 in the first heat transfer group 5, each the 3rd horizontal heat pipe 53 all bends the periphery being surrounded on Lamp cup 2, fit together with Lamp cup 2, the dorsal part of the 3rd horizontal heat pipe 53 is then different according to position, contact with the medial surface of horn-like inner chamber 11 wall of heat abstractor 1 or the U-shaped end of the first heat pipe 51 respectively, and in order to rational in infrastructure and easy to assembly, the 3rd groove 23 of suitable dimension can be set at Lamp cup 2 outer wall, fix each the 3rd horizontal heat pipe 53 for holding, in addition, can as the first heat pipe 51 represented by Fig. 9, at the lateral surface of each the 3rd horizontal heat pipe 53, namely with the U-shaped end of the first heat pipe 51, and the side that horn-like inner chamber 11 wall of heat abstractor 1 contacts is through flattening process, the lateral surface of each the 3rd horizontal heat pipe 53 can fit to the U-shaped end of the first heat pipe 51 as much as possible like this, and horn-like inner chamber 11 wall of heat abstractor 1, ensure that heat conduction efficiency.It should be noted that in the sintered heat pipe signal provided in Fig. 8 and Fig. 9, the capillary of its inside, the composite construction of groove and working solution are the keys that heat pipe has outstanding heat transfer efficiency.In the preferred embodiment, the heat that LED module 3 sends, just can by the burnishing surface 52 of the first heat pipe 51, promptly transmit along U-shaped end, and coordinate the 3rd horizontal heat pipe 53, most of heat is passed to heat abstractor 1 by the wall of horn-like inner chamber 11, by heat abstractor 1 radiator structure 13 shed, fraction heat passes to Lamp cup 2 by Lamp cup 2 outer wall, is radiate by Lamp cup 2.

The other one group of termal conductor module of the present invention is that the arrangement of the second heat transfer group 8, second heat transfer group 8 and associated inner element is fixed, can separately by one, in cylinder or columned fixture 7, it is placed on the cylindrical inner chamber stating heat abstractor 1.

As shown in Figure 7, in concrete structure, second heat transfer group 8 mainly comprises a plurality of second heat pipe 81, this a plurality of second heat pipe 81 all takes the shape of the letter U bending, so each second heat pipe 81 is just divided into a U-shaped stage casing and two U-shaped ends, certainly, and the second heat pipe 81 of a U-shaped, can be bent by single heat pipe and form, also can be that two L shape heat pipes are put together; The mutual split in U-shaped stage casing of a plurality of second heat pipe 81, and orthogonally to contact with the U-shaped stage casing of above-mentioned first heat pipe 51 is upper and lower together, realizes good thermal heat transfer capability; Relative to U-shaped stage casing, the U-shaped end of a plurality of second heat pipe 81 is co-located at the same side, and surrounds a ring-type fence, to be matched with the shape of the tubular inner chamber 12 of fixture 7 and heat abstractor 1; It is in structure in installation cooperation structure, the U-shaped end of a plurality of second heat pipe 81 is placed on outside fixture 7, and fit with the wall of the tubular inner chamber 12 of heat abstractor 1, heat when LED module 3 is worked, the burnishing surface 52 that can consist of the first heat pipe 51 is delivered to the U-shaped stage casing of the second heat pipe 81, to be delivered to rapidly each U-shaped end of the second heat pipe 81 by this, and be delivered to rapidly tubular inner chamber 12 and the fixture 7 of heat abstractor 1 by U-shaped end, to be shed by heat abstractor 1 and fixture 7.

Same, can with reference to figure 8, second heat pipe 81 is similar to the first heat pipe 51, its heat pipe structure is the heat conducting element in inside with groove and sintering capillary structure, it is by the gas of internal work liquid, liquid two phase change, and capillary force reaches heat transfer effect, basic structure is round tube, in the inventive solutions, in order to be matched with the shape of the U-shaped end of each second heat pipe 81, a plurality of second groove 16 is equidistantly offered vertically at the wall of the tubular inner chamber 12 of heat abstractor 1, be used for the U-shaped end of each second heat pipe 81 of accommodating cooperation, the U-shaped end of the second heat pipe 81 is matched and is closely mounted in corresponding second groove 16, wherein should notice that the second groove 16 is in arc-shaped, become the groove having circular arc degree, and the side that the second heat pipe 81 and the second groove 16 fit should be arc surface mutually, for the shape after itself making, therefore unnecessary this side to be reprocessed.

Due to the U-shaped end of the second heat pipe 81 and the joint place of tubular inner chamber 12 and fixture 7 outer wall, the whole wall of tubular inner chamber 12 or fixture 7 outer wall can not be covered completely, in conduction process, the heat being distributed to heat abstractor 1 and fixture 7 is even not, affect radiating efficiency, the present invention is for solving this problem, also increase at least one 4th horizontal heat pipe 82 in the second heat transfer group 8, each the 4th horizontal heat pipe 82 is surrounded on fixture 7 periphery through bending, fit together with fixture 7, the dorsal part of each the 4th horizontal heat pipe 82 is according to the difference at position, contact with the medial surface of the tubular inner chamber 12 of heat abstractor 1 or the U-shaped end of the second heat pipe 81, and in order to rational in infrastructure and easy to assembly, the 4th groove 71 of suitable dimension can be set at fixture 7 outer wall, fix the 4th horizontal heat pipe 82 for holding, in addition the lateral surface of the 4th horizontal heat pipe 82, namely with the U-shaped end of the second heat pipe 81, and the side that tubular inner chamber 12 wall of heat abstractor 1 contacts is through flattening process, the lateral surface of each the 4th horizontal heat pipe 82 can fit to the U-shaped end of the second heat pipe 81 as much as possible like this, and horn-like inner chamber 11 wall of heat abstractor 1, ensure that heat conduction efficiency, the structure after its pressing equally can with reference to figure 9.In the preferred embodiment, the heat that LED module 3 sends, the U-shaped stage casing of the second heat pipe 81 just first can be delivered to by the burnishing surface 52 of the firstth heat pipe 51, promptly transmit along the U-shaped end of the second heat pipe 81 again, and coordinate the 4th horizontal heat pipe 82, most of heat is passed to heat abstractor 1 by the wall of tubular inner chamber 12, by heat abstractor 1 radiator structure 13 shed, fraction heat passes to fixture 7 by fixture 7 outer wall, is radiate by fixture 7.

In the present invention, first heat pipe 51 is undertaken supporting to fix by fixed head 6, it is positioned on rear side of the burnishing surface 52 of the first heat pipe 51 in overall structure, as shown in Figures 10 and 11, usually can be provided with in the front of fixed head 6 under this situation and fix lines 61 with first of the U-shaped stage casing matching form of the first heat pipe 51, for fixing the U-shaped stage casing of this first heat pipe 51, reaching stable and settling fixed effect.Another effect of this outer stationary plates 6 can also be used to fix the second heat transfer group 8; In preferred embodiments, can be provided with at the back side of fixed head 6 and fix lines 62 with second of the U-shaped stage casing matching form of the second heat pipe 81, for fixing the U-shaped stage casing of this first heat pipe 51, reach stable and settling fixed effect.In this preferred version, in order to not hinder the heat conduction efficiency of the first heat pipe 51 and the second heat pipe 81, the fixed head 6 of metal material can be adopted, and preferably can fix lines 61 and second first to fix between lines 62 and arrange porose 63, make can be contacted with each other by the U-shaped stage casing of the first heat pipe 51 that fixes and the U-shaped stage casing of the second heat pipe 81.

If adopt separately fixed head 6 to be fixed the first heat pipe 51 and the second heat pipe 81, still fixed effect is not met, then the present invention can also arrange one second fixed head 9 on rear side of the U-shaped stage casing of the second heat pipe 81, the U-shaped stage casing of the second heat pipe 81 fixed by this second fixed head 9 for supporting, and coordinate with fixed head 6 second heat pipe 81 is gripped, reach stable fixed effect.Certainly, in a preferred approach, the second fixed head 9 front can arrange the fixing lines 91 with the U-shaped stage casing matching form of the second heat pipe 81, fixes the U-shaped stage casing of the second heat pipe 81 for holding, so need not carry out pressing processing to the U-shaped stage casing of the second heat pipe 81, just can realize ideal fixing.

From said structure, from the heat that LED module 3 sends in the present invention, radiate by two approach, the first heat transfer group 5 and the second heat transfer group 8 respectively, and the first heat transfer group 5 and the second heat transfer group 8 all have employed the heat superconducting assembly of heat pipe class, achieve high heat conduction efficiency, be delivered to by the heat heat abstractor 1 producing main heat sink effect and the Lamp cup 2 producing secondary thermolysis and fixture 7 place that can be exceedingly fast shed.

In common hard-wired light fixture, generally only need the heat superconducting assembly of employing one group of soaking plate, heat pipe class, good radiating effect can be produced.And projecting lamp is because its workplace, the difference of purposes, may adjust direction of illumination at any time, and therefore it does not generally have fixing irradiating angle.As everyone knows, the heat superconducting assembly of soaking plate, heat pipe class, has directionality in conduction process: because the backflow of heat superconducting component internal working solution can be subject to gravity effect, work is also in condensing reflux process, be back to thermal source down, then because of Action of Gravity Field, can be obviously fast than refluxing upward; Therefore thermal source under, when dispelling the heat upward, because working solution gravitate can be positioned at below, near thermal source, beeline can absorb heat from heat source, its heat conduction is very fast, and efficiency is higher; And at thermal source upper, when dispelling the heat down, because working solution gravitate can be positioned at below, stow away from heat, heat conduction is comparatively slow, efficiency is lower.

Because above-mentioned factor exists, present invention employs two groups of heat superconducting assemblies, and the first above-mentioned heat transfer group 5 and the second heat transfer group 8 reach complete radiating effect.Concrete can discuss in two extreme directions: (1) projecting lamp irradiates down; (2) projecting lamp irradiates upward.

(1) projecting lamp irradiates down:

As shown in figure 12, during this angular illumination, as the LED module 3 of thermal source, relative first heat transfer group 5 is positioned at below, and relative second heat transfer group 8 is positioned at top, that is, under this angle state, the first heat transfer group 5 can have higher heat transfer efficiency than the second heat transfer group 8, and therefore the first heat transfer group 5 serves main heat sink effect, as shown in figure 14, its heat dissipation path is:

LED module 3 is delivered to first heat pipe 51, first heat pipe 51 part and is directly passed to heat abstractor 1 and Lamp cup 2, and another part first passes to the 3rd horizontal heat pipe 53, then passes to heat abstractor 1 and Lamp cup 2 by the 3rd horizontal heat pipe 53.

Second heat transfer group 8 plays secondary thermolysis, and (such as, being about 50% of the first heat transfer group 5 heat transfer efficiency), as shown in figure 14, its heat dissipation path was:

LED module 3 is delivered to second heat pipe 81, second heat pipe 81 part and is directly passed to heat abstractor 1 and fixture 7, and another part first passes to the 4th horizontal heat pipe 82, then passes to heat abstractor 1 and fixture 7 by the 4th horizontal heat pipe 82.

(2) projecting lamp irradiates upward:

As shown in figure 13, during this angular illumination, as the LED module 3 of thermal source, relative first heat transfer group 5 is positioned at top, and relative second heat transfer group 8 is positioned at below, that is, under this angle state, the second heat transfer group 8 can have higher heat transfer efficiency than the first heat transfer group 5, and therefore the second heat transfer group 8 serves main heat sink effect, as shown in figure 14, its heat dissipation path is:

: LED module 3 is delivered to second heat pipe 81, second heat pipe 81 part and is directly passed to heat abstractor 1 and fixture 7, and another part first passes to the 4th horizontal heat pipe 82, then passes to heat abstractor 1 and fixture 7 by the 4th horizontal heat pipe 82.

First heat transfer group 5 serves secondary thermolysis, and (such as, being about 50% of the second heat transfer group 8 heat transfer efficiency), as shown in figure 14, its heat dissipation path was:

LED module 3 is delivered to first heat pipe 51, first heat pipe 51 part and is directly passed to heat abstractor 1 and Lamp cup 2, and another part first passes to the 3rd horizontal heat pipe 53, then passes to heat abstractor 1 and Lamp cup 2 by the 3rd horizontal heat pipe 53.

Certainly above-mentioned is the heat radiation under extreme condition, and in actual use, there will be the application of more irradiating angle, but because the acting in conjunction of the first heat transfer group 5 and the second heat transfer group 8, no matter be any angle, all can observe heat radiation principle above, namely when LED projection lamp quadrature on the upper side is penetrated, the first heat transfer group 5 plays main conductive force, and when irradiating in LED projection lamp partial below, the second heat transfer group 8 plays main conductive force.Final heat is all delivered to heat abstractor 1, Lamp cup 2 and fixture 7, by the heat abstractor 1 playing leading role, sheds through its radiator structure 13, plays Lamp cup 2 and the fixture 7 of secondary role simultaneously, also has certain heat dissipation capacity.

It should be noted, in order to ensure heat radiation in time, total heat radiation power sum of the first heat transfer group 5 and the second heat transfer group 8 is more than or equal to the power that LED module 3 will distribute simultaneously.

Certainly, the invention is not limited to above-mentioned embodiment, those of ordinary skill in the art also can make equivalent variations or replacement under the prerequisite without prejudice to spirit of the present invention, and these equivalent modification or replacement are all included in the application's claim limited range.

Claims (9)

1. a LED projection lamp, comprising:
One heat abstractor, in a tubular, its tubular periphery has radiator structure, is formed with one by the interior horn-like inner chamber expanded gradually in its tubular inner chamber front end outwardly;
One Lamp cup, in the horn-like inner chamber of described heat abstractor match tubaeform, have large oral area and little oral area, this large oral area is placed in the outer, front end of described heat abstractor, and this little port part is in the inner chamber of described heat abstractor;
One LED module, is positioned at the little oral area place of described Lamp cup;
One lens, for supplying LED module printing opacity, it is fixed on the front end of described heat abstractor by a retainer ring;
One first heat transfer group, comprise the first heat pipe of a plurality of bending that takes the shape of the letter U, wherein the U-shaped stage casing of this plural first heat pipe pieces together a burnishing surface mutually to support fixing described LED module, the U-shaped end of this plurality of first heat pipe is placed on outside described Lamp cup, and fits with the horn-like inner chamber wall of described heat abstractor;
One fixture, in a cylinder or cylindric, it is placed on the cylindrical inner chamber of described heat abstractor;
One second heat transfer group, comprise the second heat pipe of a plurality of bending that takes the shape of the letter U, wherein this plural second heat pipe the mutual split in U-shaped stage casing and contact with the U-shaped stage casing of described first heat pipe, the U-shaped end of this plurality of second heat pipe is placed on outside described fixture, and fits with the tubular inner chamber wall of described heat abstractor;
One fixed head, on rear side of the burnishing surface being positioned at described a plurality of first heat pipe, supports and secures the above the U-shaped stage casing of the first heat pipe and the U-shaped stage casing of the second heat pipe;
Total heat radiation power sum of wherein said first heat transfer group and the second heat transfer group is more than or equal to the power that described LED module will distribute,
It is characterized in that, be also provided with the second fixed head on rear side of the U-shaped stage casing of described second heat pipe, this second fixed head supports the U-shaped stage casing securing the above the second heat pipe; Described second fixed head front is provided with the fixing lines of the U-shaped stage casing matching form of the second heat pipe, fixes the U-shaped stage casing of the second heat pipe for holding.
2. a kind of LED projection lamp according to claim 1, wherein the first heat transfer group also comprises the 3rd horizontal heat pipe that at least one bending is surrounded on described Lamp cup periphery; Described Lamp cup outer wall is provided with the 3rd groove of accommodating described 3rd horizontal heat pipe; Wherein the 3rd groove is arc-shaped, and the side that described 3rd horizontal heat pipe and the 3rd groove fit should be arc surface mutually; Contact inside the U-shaped end of the outside of described 3rd horizontal heat pipe and the horn-like inner chamber wall of described heat abstractor and described first heat pipe.
3. a kind of LED projection lamp according to claim 1 and 2, wherein said second heat transfer group also comprises the 4th horizontal heat pipe that at least one bending is surrounded on described fixture periphery; Described fixture outer wall is provided with the 4th groove of accommodating described 4th horizontal heat pipe; Wherein the 4th groove is arc-shaped, and the side that described 4th horizontal heat pipe and the 4th groove fit should be arc surface mutually; Contact outside described 4th horizontal heat pipe with inside the tubular inner chamber wall of described heat abstractor and the U-shaped end of described second heat pipe.
4. a kind of LED projection lamp according to claim 1, the wall of the horn-like inner chamber of wherein said heat abstractor offers a plurality of first groove vertically, the U-shaped end of described first heat pipe matches and is closely mounted in this first groove, wherein this first groove is arc-shaped, and the side that described first heat pipe and the first groove fit should be arc surface mutually.
5. a kind of LED projection lamp according to claim 1 or 4, the wall of the tubular inner chamber of wherein said heat abstractor offers a plurality of second groove vertically, the U-shaped end of described second heat pipe matches and is closely mounted in this second groove, wherein this second groove is arc-shaped, and the side that described second heat pipe and the second groove fit should be arc surface mutually.
6. a kind of LED projection lamp according to claim 1, wherein said fixed head is between the U-shaped stage casing of described first heat pipe and the U-shaped stage casing of described second heat pipe, the front of this fixed head is provided with and fixes lines with first of the U-shaped stage casing matching form of described first heat pipe, for fixing the U-shaped stage casing of this first heat pipe, the back side of this fixed head is provided with and fixes lines with second of the U-shaped stage casing matching form of described second heat pipe, for fixing the U-shaped stage casing of this second heat pipe, wherein this first fix lines and second fix arrange between lines porose, make can be contacted with each other by the U-shaped stage casing of the first heat pipe that fixes and the U-shaped stage casing of the second heat pipe.
7. a kind of LED projection lamp according to claim 1, outer, wherein said heat abstractor front end is provided with outward flange, and described retainer ring is installed on this outward flange.
8. a kind of LED projection lamp according to claim 1 or 7, wherein said lens are Fresnel Lenses.
9. a kind of LED projection lamp according to claim 8, wherein said retainer ring is equipped with the transmissive mirror covering described lens.
CN201310282374.2A 2012-03-02 2012-03-02 LED projection lamp CN103363401B (en)

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EP2083214A1 (en) * 2008-01-28 2009-07-29 Neng Tyi Precision Industries Co., Ltd. Light emitting diode lamp
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