CN203404762U

CN203404762U - Air-cooled LED lamp

Info

Publication number: CN203404762U
Application number: CN201320463865.2U
Authority: CN
Inventors: 戴光军; 张红军; 娄荣清
Original assignee: Individual
Current assignee: Individual
Priority date: 2013-07-31
Filing date: 2013-07-31
Publication date: 2014-01-22
Anticipated expiration: 2023-07-31

Abstract

The utility model relates to an air-cooled LED lamp which comprises a lamp shell, a light source, a fan and a drive circuit. The air-cooled LED lamp is characterized in that the lamp shell comprises an upper lamp shell and a lower lamp shell, a radiating body is connected between the upper lamp shell and the lower lamp shell, the fan and the drive circuit are arranged in an inner cavity formed by the upper lamp shell and the radiating body and the fan is located below the drive circuit. An air inlet is formed in the upper lamp shell on the drive circuit and a first air outlet is formed in a wall face of the radiator body below the fan. The light source is installed on the end face, adjacent to the lower lamp shell, of the radiating body and a vent communicated with the lower lamp shell is formed in the end face adjacent to the lower lamp shell. A second air outlet is formed in the lower lamp shell. With the structure, the radiating body is used for fully reducing heat resistance of the lamp; the ingenious design of the fan and the air outlets can be used for dissipating heat generated in use out of the lamp shell smoothly. Thus, under the same power, the air-cooled LED lamp has the advantages of being smaller in size, more compact in structure, lower in cost and longer in service life.

Description

Air-cooled LED lamp

Technical field

The utility model relates to a kind of light fixture, specifically refers to a kind of air-cooled LED lamp.

Background technology

Along with scientific and technical development, lighting is also constantly being weeded out the old and bring forth the new, and from traditional incandescent lamp, is developed to fluorescence fluorescent tube, the appearance of up-to-date LED lamp, and wherein, LED lamp is applied because having the advantages such as energy-saving and environmental protection, long service life.But because LED luminescent wafer is comparatively responsive to temperature, if can not distribute in time the heat producing in use procedure, aging, light decay that will accelerated luminescence wafer and color shift, shorten service life of LED lamp the most at last.Therefore on existing LED lamp, conventionally the radiator that volume is very large can be designed with, although this can meet the requirement for light fixture heat dispersion, fitting structure compactness cannot be reached, the object that volume is little.Especially in order to meet the lighting requirement of different occasions, constantly designing and developing of various high-powered LED lamps, makes the volume of such light fixture increasing, more and more heavier.

For this reason, people increase fan in LED lamp, so that the heat in lamp casing distributes rapidly outside housing, to reduce the volume of LED light fixture.If Chinese patent publication No. is all to have disclosed the LED lamp with fan in the patent documentation of CN102221139A and CN102797990A.

But in the existing LED lamp with fan, the structural design in air channel is still reasonable not, the heat in lamp housing can not be distributed swimmingly in time, to such an extent as to a certain degree still can affect service life and the volume size of light fixture.

Utility model content

Technical problem to be solved in the utility model is the present situation for prior art, provides that a kind of heat dispersion is better, compact conformation, air-cooled LED lamp that volume is little.

The utility model solves the problems of the technologies described above adopted technical scheme: a kind of air-cooled LED lamp, comprise lamp housing, light source, fan and the drive circuit being electrically connected to light source, it is characterized in that: described lamp housing comprises lamp housing and lower lamp housing, on this, between lower lamp housing, be connected with radiator, described fan and drive circuit are arranged in lamp housing and the formed inner chamber of radiator, and described fan is positioned under drive circuit, on upper lamp housing on described drive circuit, have air inlet, on the wall of the radiator under described fan, have the first air outlet, described light source is arranged on the end face of lamp housing under the vicinity of radiator, and on this end face, have the ventilating opening that is communicated with described lower lamp housing, and also have the second air outlet on described lower lamp housing.

As preferred version of the present utility model, the first described air outlet is arranged on the sidewall that is adjacent to described radiator end face, the second described air outlet is positioned on the sidewall of described lower lamp housing, and it is large as much as possible that first, second air outlet making designs, and is conducive to distributing of hot blast.

In above-mentioned each scheme, in described radiator, there is radially-arranged a plurality of rib, under the condition that does not affect light fixture appearance, can improve area of dissipation, fully to reduce the thermal resistance of light fixture.

In described lower lamp housing, reflector is installed, and the lower port of lower lamp housing dismounting is connected with lamp protecgulum, the rising angle of described reflector is 20 °, 30 °, 38 °, 50 ° or 60 °, to meet the requirement of the building of differing heights to luminous intensity distribution.

Preferred scheme is, described fan adopts the fan with two ball bearings, can guarantee that light fixture trouble-freely works for a long time.

Compared with prior art, because the utility model is by upper, between lower lamp housing, radiator is set, and design air inlet on upper lamp housing, on radiator and lower lamp housing, design respectively air port, make the utility model not only utilize radiator fully to reduce the thermal resistance of light fixture, but also can be by means of the ingehious design in fan and air port, the heat of drive circuit in use procedure and light source generation is discharged swimmingly in time in lamp housing, thereby under Same Efficieney, the utility model volume is less, structure is more compact, and it is lower also to have cost, the advantage of longer service life.

Accompanying drawing explanation

Fig. 1 is the front view of the utility model embodiment;

Fig. 2 is the cutaway view of Fig. 1;

Fig. 3 is the front view of the radiator in the utility model embodiment;

Fig. 4 is the top view of Fig. 3.

The specific embodiment

Below in conjunction with accompanying drawing, embodiment is described in further detail the utility model.

As shown in Figures 1 to 4, this air-cooled LED lamp comprises lamp housing, light source 4, fan 5 and the drive circuit 6 being electrically connected to light source 4, its lamp housing comprises upper end with the upper lamp housing 1 of conventional lamp holder and is positioned at the lower lamp housing 2 under upper lamp housing, between this upper and lower lamp housing, dismounting is connected with radiator 3, in the present embodiment, upper lamp housing 1 is working of plastics, and radiator 3 is formed by aluminium die casting, radiator 3 is tightened to one by three screw rods and upper lamp housing 1, between radiator 3 and lower lamp housing 2 for being threaded.Described fan 5 and drive circuit 6 are arranged in lamp housing 1 and the formed inner chamber of radiator 3, and fan 5 is positioned under drive circuit 6, here, drive circuit 6 is conventional design, it is positioned at lamp housing 1, and fan 5 is fixed on the lower port place of lamp housing 1, and the blade of fan 5 is contained in the cavity of radiator 3, on upper lamp housing on drive circuit 6, have air inlet 11, on the wall of the radiator under fan, have the first air outlet 31.Above-mentioned light source 4 adopts COB integrated optical sources, and it is arranged on by support 7 on the end face of lamp housing 2 under the vicinity of radiator 3, and on this end face, has the ventilating opening 32 of lamp housing under connection, and on lower lamp housing 2, also has the second air outlet 21.

Preferably, above-mentioned the first air outlet 31 is arranged on the sidewall that is adjacent to radiator 3 end faces, and above-mentioned the second air outlet 21 is positioned on the sidewall of described lower lamp housing 2, like this can be larger so that first, second air outlet is made, be conducive to the effusion of hot blast.

Meanwhile, in the present embodiment, have radially-arranged a plurality of rib 33 in radiator, as shown in Figure 4, and adjacent rib length is not etc., to improve the area of dissipation of radiator, can fully reduce the thermal resistance of light fixture.

In described lower lamp housing, reflector 8 is installed, lower port at lower lamp housing is provided with sheet glass 9, and the lamp protecgulum 10 that has been threaded, the rising angle of reflector 8 can be elected 20 °, 30 °, 38 °, 50 ° or 60 ° on demand as, thereby has formed the light distribution effect of illuminating ray to certain direction projection.

In the present embodiment, described fan adopts the fan with two ball bearings 51, and its time between failures is greater than 50000 hours, makes the normal service life of light fixture reach expectation target, thereby has reduced the workload of ordinary maintenance.

Claims

1. an air-cooled LED lamp, comprise lamp housing, light source, fan and the drive circuit being electrically connected to light source, it is characterized in that: described lamp housing comprises lamp housing and lower lamp housing, on this, between lower lamp housing, be connected with radiator, described fan and drive circuit are arranged in lamp housing and the formed inner chamber of radiator, and described fan is positioned under drive circuit, on upper lamp housing on described drive circuit, have air inlet, on the wall of the radiator under described fan, have the first air outlet, described light source is arranged on the end face of lamp housing under the vicinity of radiator, and on this end face, have the ventilating opening that is communicated with described lower lamp housing, and also have the second air outlet on described lower lamp housing.

2. air-cooled LED lamp according to claim 1, is characterized in that: the first described air outlet is arranged on the sidewall that is adjacent to described radiator end face, and the second described air outlet is positioned on the sidewall of described lower lamp housing.

3. air-cooled LED lamp according to claim 1 and 2, is characterized in that: in described radiator, have radially-arranged a plurality of rib.

4. air-cooled LED lamp according to claim 1 and 2, is characterized in that: in described lower lamp housing, reflector is installed, the lower port dismounting of this lower lamp housing is connected with lamp protecgulum, and the rising angle of described reflector is 20 °, 30 °, 38 °, 50 ° or 60 °.

5. air-cooled LED lamp according to claim 1 and 2, is characterized in that: described fan adopts the fan with two ball bearings.