The utility model content
In view of this, the purpose of this utility model is, a kind of led lamp of hollow liquid cooling is provided, and can solve the problem of cooling fluid to the corrosion of LED substrate.
For achieving the above object, the invention provides a kind of led lamp of hollow liquid cooling, comprising: the LED substrate light source, substrate holder, outer light distributing cap, the inner seal cover that constitute by led light source and LED substrate;
Described inner seal cover is arranged on the top of described substrate holder, and the inner surface of described inner seal cover and the top of described substrate holder constitute first sealed cavity, and described LED substrate light source is sealed in described first sealed cavity;
Described outer light distributing cap is arranged on the outside of described substrate holder, and the outer surface of the inner surface of described outer light distributing cap, the outer surface of described substrate holder and described inner seal cover forms second sealed cavity, is full of cooling fluid in described second sealed cavity.
Preferably, described inner seal cover is a light-distribution lens.
Preferably, between described LED substrate and described substrate holder, heat-conducting medium is set.
Preferably, described heat-conducting medium is heat-conducting plate or heat conducting coating.
Preferably, in described second sealed cavity, described substrate holder below set up baffle plate; Described baffle plate and described substrate holder constitute packing less narrow and small zone.
Preferably, adopt between described inner seal cover and the described substrate holder and be threaded or fluid sealant is tightly connected.
Preferably, described cooling fluid is a high-cooling property liquid.
Preferably, described substrate holder adopts the good material of thermal conductivity to make.
Preferably, described LED substrate adopts the mode of riveted joint, welding or stickup to be close to described substrate holder setting.
Among the utility model embodiment, described LED base plate seals is in first sealed cavity of described inner seal cover inner surface and substrate holder top formation, and described cooling fluid is filled in the inner surface by outer light distributing cap, the outer surface of substrate holder and the outer surface of inner seal cover form in second sealed cavity, the LED substrate is with in described cooling fluid is located in different sealed cavities like this, reach the effect of isolation, make the LED substrate no longer be immersed in the described cooling fluid, prevented the corrosion of cooling fluid thus, prevented that simultaneously cooling fluid from penetrating in the chip on the LED substrate the LED substrate.
The specific embodiment
Below in conjunction with the accompanying drawing among the utility model embodiment, the technical scheme among the utility model embodiment is clearly and completely described, obviously, described embodiment only is the utility model part embodiment, rather than whole embodiment.Based on the embodiment in the utility model, those of ordinary skills are not making the every other embodiment that is obtained under the creative work prerequisite, all belong to the scope of the utility model protection.
The purpose of this utility model provides a kind of led lamp of hollow liquid cooling, can solve the problem that the LED substrate is corroded by cooling fluid.
For above-mentioned purpose of the present utility model, feature and advantage can be become apparent more, the utility model is described in further detail below in conjunction with the drawings and specific embodiments.
The led lamp of the described hollow liquid cooling of the utility model embodiment comprises: the LED substrate light source, substrate holder, outer light distributing cap, the inner seal cover that are made of led light source and LED substrate.
Described inner seal cover is arranged on the top of described substrate holder, and the inner surface of described inner seal cover and the top of described substrate holder constitute first sealed cavity, and described LED substrate light source is sealed in described first sealed cavity; Described outer light distributing cap is arranged on the outside of described substrate holder, and the outer surface of the inner surface of described outer light distributing cap, the outer surface of described substrate holder and described inner seal cover forms second sealed cavity, is full of cooling fluid in described second sealed cavity.
Among the utility model embodiment, described LED base plate seals is in first sealed cavity of described inner seal cover inner surface and substrate holder top formation, and described cooling fluid is filled in the inner surface by outer light distributing cap, the outer surface of substrate holder and the outer surface of inner seal cover form in second sealed cavity, the LED substrate is with in described cooling fluid is located in different sealed cavities like this, reach the effect of isolation, make the LED substrate no longer be immersed in the described cooling fluid, prevented the corrosion of cooling fluid thus, prevented that simultaneously cooling fluid from penetrating in the chip on the LED substrate the LED substrate.
Preferably, described inner seal cover of the utility model embodiment and described led light source are equipped with, and are a transparent body.At this moment, the light beam that described led light source sends can be transmitted in the cooling fluid by described inner seal cover, penetrates by described outer light distributing cap and goes.Preferably, described inner seal cover can be a light-distribution lens, and the light beam that described led light source sends carried out once light-distribution earlier before entering cooling fluid, makes that the light enter before the cooling fluid is more even; Then, described light passes through the secondary light-distribution of described cooling fluid again, and being transmitted to airborne light effects will be desirable more.
For above-mentioned purpose of the present utility model, feature and advantage can be become apparent more, be example with ball bubble shape LED light fixture and bar-shaped LED light fixture below, with the specific embodiment technical solutions of the utility model are clearly and completely described in conjunction with the accompanying drawings, obviously, the shape of LED light fixture is not limited to ball bubble shape and bar shaped.Under the prerequisite that does not break away from technical solutions of the utility model, the LED light fixture of other Any shape is all in protection domain of the present utility model.
Be that example is elaborated to technical solutions of the utility model with ball bubble shape LED light fixture below.
With reference to Fig. 2 and Fig. 3, the ball that being respectively the utility model embodiment one provides steeps the explosive view and the cutaway view of shape LED light fixture.
In conjunction with Fig. 2 and shown in Figure 3, the ball of the utility model embodiment one bubble shape LED light fixture comprises: led light source 20, LED substrate 21, substrate holder 22, outer light distributing cap 23, inner seal cover 24, lamp holder connector 25, lamp holder 26 and driver 27.
Described led light source 20 is fixed on the described LED substrate 21, constitutes LED substrate light source.
Inner seal cover 24 is arranged on the top of substrate holder 22, and the top of the inner surface of described inner seal cover 24 and substrate holder 22 constitutes first sealed cavity 201, and described LED substrate 21 is sealed in described first sealed cavity 201, is close to the top of substrate holder 22.
Outer light distributing cap 23 is arranged on the outside of substrate holder 22, and the outer surface of the inner surface of described outer light distributing cap 23, substrate holder 22 and the outer surface of inner seal cover 24 form second sealed cavity 202, is full of the cooling fluid with high-cooling property in described second sealed cavity 202.
Described lamp holder connector 25 links to each other with lamp socket 26, and described substrate holder 22 is threaded with described lamp holder connector 25; Described substrate holder 22 inner surfaces, lamp holder connector 25, lamp socket 26 constitute the 3rd sealed cavity 203, and described driver 27 places in described the 3rd sealed cavity 203.
Among the utility model embodiment, the LED substrate 21 of described ball bubble shape LED light fixture is sealed in first sealed cavity 201 of described inner seal cover 24 inner surfaces and substrate holder 22 tops formation, and described cooling fluid is filled in the inner surface by outer light distributing cap 23, the outer surface of the outer surface of substrate holder 22 and inner seal cover 24 forms in second sealed cavity 202, LED substrate 21 is with in described cooling fluid is located in different sealed cavities like this, reach the effect of isolation, make LED substrate 21 no longer be immersed in the described cooling fluid, prevented the corrosion of cooling fluid thus, prevented that simultaneously cooling fluid from penetrating in the chip on the LED substrate 21 LED substrate 21.
Among the utility model embodiment,, therefore when cooling fluid is selected, needn't consider again that cooling fluid can constitute the problem of corrosion to LED substrate 21 because described LED substrate 21 no longer is immersed in the described cooling fluid.At this moment, the liquid that only needs to select good heat dispersion performance need not be considered corrosive height of this liquid again as cooling fluid, and thus, the selectance of described cooling fluid is higher.For example, the water that can select perfect heat-dissipating and less expensive not only is easy to realization but also can well realizes radiating effect as cooling fluid.
Among the utility model embodiment, substrate holder 22 has good thermal conductivity.When the led light source on the LED substrate 21 20 carries out luminous generation heat, because LED substrate 21 is close to substrate holder 22, substrate holder 22 directly contacts with described cooling fluid, substrate holder 22 can reach described cooling fluid rapidly with the heat that led light source 20 produces, convection current by described cooling fluid again, heat is reached outer light distributing cap 23, reach radiating effect.
Among the utility model embodiment, described LED substrate 21 is close to substrate holder 22 tops, specifically can adopt riveted joint, welding, bonding method.
Preferably, can add heat-conducting medium between LED substrate 21 and the substrate holder 22, strengthen the heat conduction between LED substrate 21 and the substrate holder 22.
Concrete, described heat-conducting medium can be heat-conducting plate, and described heat-conducting plate is between the top of the bottom of LED substrate 21 and substrate holder 22.
Concrete, described heat-conducting medium can be heat conducting coating, and described heat conducting coating spreads upon between the top of the bottom of LED substrate 21 and substrate holder 22.
Among the utility model embodiment, described inner seal cover 24 adopts with substrate holder 22 and is threaded.In order to reach better sealing effectiveness, prevent that described cooling fluid from infiltrating in first sealed cavity 201, preferably, described inner seal cover 24 adopts fluid sealant to seal with the junction of substrate holder 22.
Among the utility model embodiment, inner seal cover 24 is a transparent body.When led light source 20 was luminous, light can pass transparent inner seal cover 24, enters described cooling fluid, and is more even when the light that LED substrate light source 20 is sent passes outer light distributing cap 23 by the liquid luminous intensity distribution of described cooling fluid, improves light efficiency.
Preferably, described inner seal cover 24 can adopt with LED substrate 21 optics on the light-distribution lens that matches, described light-distribution lens can carry out once light-distribution to light.Light enters described cooling fluid again and carries out secondary light-distribution through behind the once light-distribution of described light-distribution lens, makes the light that passes outer light distributing cap more even like this.
With reference to Fig. 4, the cutaway view when having bubble for the utility model embodiment one ball bubble shape LED light fixture.Because the certain coefficient of expansion of liquid is so can expand after cooling fluid is heated.For described second sealed cavity 202, fill full cooling fluid in it, light distributing cap 23 breaks outside may causing behind the described cooling fluid expanded by heating.Therefore, in the practical application, in second sealed cavity 202, filling in the process of described cooling fluid, can in described second sealed cavity 202, keep a certain size bubble 28.The existence of described bubble 28 can make when described cooling fluid expanded by heating have certain space to hold the liquid of expansion, has prevented breaking of outer light distributing cap 23 effectively.
But the position of described bubble 28 is difficult to fixing, and as shown in Figure 4, bubble 28 is positioned at the top of second sealed cavity 202.When the led light source on the LED substrate 21 20 was luminous, light penetrated outer light distributing cap 23 through bubble 28 backs, can occur hot spot in range of exposures.The ball bubble shape LED light fixture that the utility model embodiment two provides has effectively solved this problem.
With reference to Fig. 5, steep the cutaway view of shape LED light fixture for the ball of embodiment two of the present utility model.Among Fig. 5, increase baffle plate 29 in described second sealed cavity 202, below described substrate holder 22 and described outer light distributing cap 23 junctions is with the fixed-site of described bubble 28 bottom at second sealed cavity 202.Because described substrate holder 22 is not the light out part of LED light fixture with the below of described outer light distributing cap 23 junctions, does not have light to send from this, makes the existence of bubble 28 can not produce hot spot.
Baffle plate 29 is installed in the below of described substrate holder 22 described in the utility model embodiment, be specially the junction of described outer light distributing cap 23 and substrate holder 22, the outer surface of the edge of described baffle plate 29 and substrate holder 22 has certain distance, this distance makes described substrate holder 22 and described baffle plate 29 constitute packing less narrow and small zone, and described bubble 28 is constrained in the described narrow and small zone.Because light does not penetrate from the outer light distributing cap 23 and the junction of substrate holder 22, so the existence of bubble 28 can not produce hot spot in range of exposures.
Be that example is elaborated to technical solutions of the utility model with the bar-shaped LED light fixture below.
With reference to Fig. 6, be the bar-shaped LED light fixture cross sectional view of the utility model embodiment three.This bar-shaped LED light fixture mainly comprises: led light source 60, LED substrate 61, substrate holder 62, outer light distributing cap 63, inner seal cover 64 and driver 65.
Described led light source 60 is welded on the described LED substrate 61, constitutes LED substrate light source.
Inner seal cover 64 is arranged on the top of substrate holder 62, and the top of the inner surface of described inner seal cover 64 and substrate holder 62 constitutes first sealed cavity 601, and described LED substrate 61 is sealed in described first sealed cavity 601, is close to the top of substrate holder 62.
Outer light distributing cap 63 is arranged on the outside of substrate holder 62, and the outer surface of the inner surface of described outer light distributing cap 63, substrate holder 62 and inner seal cover 64 outer surfaces form second sealed cavity 602, is full of the cooling fluid with high-cooling property in described second sealed cavity 602; Described driver 65 is positioned at the 3rd sealed cavity 603 that described substrate holder 62 inner surfaces constitute.
Among the utility model embodiment, the LED substrate 61 of described bar-shaped LED light fixture is sealed in described first sealed cavity 601, described cooling fluid is filled in described second sealed cavity 602, LED substrate 61 and described cooling fluid reach the effect of isolation like this, make LED substrate 61 no longer be immersed in the described cooling fluid, prevented the corrosion of cooling fluid thus, prevented that simultaneously cooling fluid from penetrating in the chip on the LED substrate 61 LED substrate 61.
Among the utility model embodiment, because described LED substrate 61 no longer is immersed in the described cooling fluid, therefore when cooling fluid is selected, only need to select the liquid of good heat dispersion performance as cooling fluid, need not consider corrosive height of this liquid again, thus, the selectance of described cooling fluid is higher.
Among the utility model embodiment, substrate holder 62 has good thermal conductivity.The heat of led light source 60 luminous generations can reach in the described cooling fluid rapidly by the conduction of substrate holder 62, and then heat can be reached outside the outer light distributing cap rapidly, reaches radiating effect.
Among the utility model embodiment, described LED substrate 61 is close to substrate holder 62 tops, specifically can adopt riveted joint, welding, bonding method.
Preferably, can add heat-conducting medium between LED substrate 61 and the substrate holder 62, strengthen the heat conduction between LED substrate 61 and the substrate holder 62.Concrete, heat-conducting medium can be heat-conducting plate or heat conducting coating.
Among the utility model embodiment, described inner seal cover 64 adopts with substrate holder 62 and is threaded.Preferably, described inner seal cover 64 adopts fluid sealant to seal with the junction of substrate holder 62.
Among the utility model embodiment, inner seal cover 64 is a transparent body.Light enters cooling fluid after seeing through the described transparent body, and described cooling fluid can carry out luminous intensity distribution to light, makes that the light that passes outer light distributing cap 63 is even.
Preferably, described inner seal cover 64 can adopt with LED substrate 61 optics on the light-distribution lens that matches, described light-distribution lens can carry out luminous intensity distribution to light.Pass behind the outer light distributing cap 63 more even through the light behind twice luminous intensity distribution.
In order to prevent that described cooling fluid expanded by heating from causing outer light distributing cap to break, in second sealed cavity 602 of the described bar-shaped LED light fixture of the utility model embodiment, also can keep a certain size bubble.But the not limited timing in position when described bubble may produce hot spot in range of exposures.The utility model embodiment four has effectively solved this problem.
With reference to Fig. 7, be the bar-shaped LED light fixture cross sectional view of the utility model embodiment four.
Among Fig. 7, in described second sealed cavity 602, below described substrate holder 62 and described inner seal cover 64 junctions, increase baffle plate 67, with the fixed-site of bubble 66 bottom at second sealed cavity 602.Because described substrate holder 62 is not the light out part of LED light fixture with the below of described inner seal cover 64 junctions, does not have light to send from this, makes the existence of described bubble 66 can not produce hot spot.
Baffle plate 67 is installed in the below of substrate holder 62 described in the utility model embodiment, and described baffle plate 67 constitutes packing less narrow and small zone with described substrate holder 62, makes described bubble 66 be constrained in the described narrow and small zone.Because light does not penetrate from inner seal cover 64 belows, so the existence of bubble 66 can not produce hot spot in range of exposures.
To the above-mentioned explanation of the disclosed embodiments, make this area professional and technical personnel can realize or use the utility model.Multiple modification to these embodiment will be conspicuous concerning those skilled in the art, and defined herein General Principle can realize under the situation that does not break away from spirit or scope of the present utility model in other embodiments.Therefore, the utility model will can not be restricted to these embodiment shown in this article, but will meet and principle disclosed herein and features of novelty the wideest corresponding to scope.