CN201739830U

CN201739830U - LED light fixture with flow guiding function

Info

Publication number: CN201739830U
Application number: CN2010202343997U
Authority: CN
Inventors: 温丰远
Original assignee: STONLITE DISCRETE AND OPTO Co
Current assignee: STONLITE DISCRETE AND OPTO Co
Priority date: 2010-06-23
Filing date: 2010-06-23
Publication date: 2011-02-09
Anticipated expiration: 2020-06-23

Abstract

The utility model relates to a LED light fixture with flow guiding function used for heat dissipation of LED light fixture by guiding the external air flow. The LED light fixture comprises a light base, a radiator disposed in the light base, a heat dissipation plate and LED module. The light base is provided with complex number of heat radiation holes, and the radiator comprises a plurality of heat radiation fins, any two of which can form a heat dissipation channel with respect to the heat hole. The LED module and the heat dissipation plate are in a thermal contact. The heat dissipation plate is attached to the heat radiation fins and complex number of holes are disposed on the heat dissipation plate in the shape of a ring, besides, one side of each hole is formed a flow deflector extending from the heat dissipation plate. The external air can be guided into the heat dissipation channel by the flow deflector, and flow out from the heat dissipation hole, thereby the speed of natural air convection in the light fixture can be increased, and the heat aggregation can be prevented.

Description

The LED light fixture of tool diversion function

Technical field

The utility model is relevant with the LED light fixture, is particularly to a kind of LED light fixture with radiator structure.

Background technology

In recent years because of the flourish of light emitting diode (LED) technology and reach its maturity, characteristics such as have low power consuming, long service life again, volume is little, reaction is fast become following main flow market so replace traditional based on halogen bulb gradually.

Generally speaking, the high more used heat of supervening of the power of LED is also many more, and still, high temperature has sizable negative effect to life-span and the luminous efficacy of LED, and therefore, the higher LED light fixture of power can be provided with radiator structure mostly, with in time with the high temperature loss; The radiator structure of known LED light fixture utilizes the mode of free convection that used heat is directed to outside loss from the LED lamp interior usually, its embodiment is that a radiator is amplexiformed on the shady face of LED, this radiator can be made up of plurality of radiating fins, quickens to get rid of the used heat that LED is produced when luminous by having the radiating fin of area of dissipation on a large scale.

In the said structure, though the area of dissipation of this radiator can quicken the eliminating of LED used heat, yet, because the gas flow rates of free convection is comparatively slow, so its heat radiation process still causes the phenomenon of hot polymerization collection easily, make the bulk temperature of this LED light fixture higher, even have influence on service life and the luminous efficiency of this LED.

Summary of the invention

A purpose of the present utility model is to provide a kind of LED light fixture of tool diversion function, to quicken the free convection speed of lamp interior air-flow, avoids producing the phenomenon of hot polymerization collection.

In order to reach above-mentioned purpose, the utility model provides a kind of LED light fixture of tool diversion function, in order to the guiding outer gas stream LED light fixture is dispelled the heat, the LED light fixture comprises lamp socket, radiator, heat sink and LED module, lamp socket has accommodation space, and offer plural louvre, radiator is arranged in the accommodation space, radiator comprises most radiating fins, and be formed with heat dissipation channel between wantonly two radiating fins, the corresponding respectively louvre of heat dissipation channel sets, and heat sink amplexiforms on radiator, and heat sink is equipped with plural perforate, side in each perforate has a flow deflector from the heat sink elongation moulding, flow deflector guiding outer gas stream enters heat dissipation channel, and flows out from louvre, and the LED module comprises and the circuit board of heat sink thermo-contact and the plural LED of electric connection circuit board.

Another purpose of the present utility model is to provide a kind of LED light fixture of tool diversion function, with the bulk temperature of quick reduction LED light fixture, avoids the service life and the luminous efficiency of temperatures involved LED light fixture

Compared to known, LED light fixture of the present utility model, be equipped with plural perforate in heat sink, and the side in each perforate has flow deflector from the heat sink elongation moulding, enter this heat dissipation channel with the guiding outer gas stream along flow deflector, when the airflow passes perforate, because the perforated area that is passed is less, make the air velocity of passing through accelerate to drive the speed of free convection, take away the heat that conducts to radiator fast with this, and reduce the bulk temperature of LED light fixture rapidly, to avoid producing the phenomenon of hot polymerization collection, prevent to reduce LED light fixture service life and luminous efficiency, increase practicality of the present utility model.

Description of drawings

Fig. 1 is the three-dimensional appearance schematic diagram of the LED light fixture of the utility model tool diversion function;

Fig. 2 is the three-dimensional exploded view of the LED light fixture of the utility model tool diversion function;

Fig. 3 is the assembled sectional view of the LED light fixture of the utility model tool diversion function; And

Fig. 4 is the use schematic diagram of the LED light fixture of the utility model tool diversion function.

[main element symbol description]

1 LED light fixture

10 lamp sockets, 11 bell shaped lamp shades

110 accommodation spaces, 12 sections of accepting

120 louvres, 13 conductive contacts

131 reference columns, 20 radiators

21 hollow circuit cylinders, 22 radiating fins

220 heat dissipation channels, 30 heat sinks

300 perforates, 301 combined holes

31 flow deflectors

40 LED modules, 41 circuit boards

410 perforation, 42 LED

50 cover caps, 500 containing holes

501 through holes, 60 transmissive mirror

70 latch members

The specific embodiment

Relevant detailed description of the present utility model and technology contents cooperate graphic being described as follows, yet appended graphic reference and the explanation usefulness of only providing not is to be used for the utility model is limited.

Please refer to Fig. 1 to Fig. 3, be respectively three-dimensional appearance schematic diagram, three-dimensional exploded view and the assembled sectional view of the LED light fixture of the utility model tool diversion function; The LED light fixture 1 of tool diversion function of the present utility model comprises a lamp socket 10, a radiator 20, a heat sink 30, a LED module 40, a cover cap 50 and a transmissive mirror 60.

This lamp socket 10 comprises a bell shaped lamp shade 11, extends in a section of accepting 12 and a conductive contact 13 of these bell shaped lamp shade 11 bottoms, this bell shaped lamp shade 11 has an accommodation space 110, offer plural louvre 120 on this section of accepting 12, this conductive contact 13 is fixed on the outboard end of this section of accepting 12, and forms plural reference column 131 on its end face.

This radiator 20 is arranged in this accommodation space 110, this radiator comprises a hollow circuit cylinder 21 and is molded at interval most radiating fins 22 on these hollow circuit cylinder 21 outer edge surfaces, and 22 of wantonly two radiating fins are formed with a heat dissipation channel 220, and corresponding respectively these louvres 120 of this heat dissipation channel 220 set.

This heat sink 30 amplexiforms on this radiator 20, it is constituted by the good sheet metal of a thermal conductivity, this heat sink 30 is rounded in the present embodiment, and be equipped with plural perforate 300 in outer rim, side in each perforate 300 has a flow deflector 31 from these heat sink 30 elongation mouldings, and this flow deflector 31 is a side that is connected this perforate 300 obliquely; In addition, the reference column 131 that 30 pairs of this heat sinks should conductive contact 13 and be provided with plural combined hole 301.

This LED module 40 comprises with a circuit board 41 of this heat sink 30 thermo-contacts and electrically connects the plural LED 42 of this circuit board 41, and this circuit board 41 is also to reference column 131 that should conductive contact 13 and be provided with plurality of through holes 410.

This cover cap 50 covers on the bell shaped lamp shade 11 of this lamp socket 10, with this LED module 40 of cover cap, the position that is provided with of this cover cap 50 corresponding these LED 42 is provided with a containing hole 500, is combined with this transmissive mirror 60 in this containing hole 500, is provided with plural through hole 501 at the outer ring of this containing hole 500.

When group is established, at first this bell shaped lamp shade 11 is placed on this conductive contact 13, and in regular turn with this radiator 20, this heat sink 30 and this LED module 40 are contained in the accommodation space 110 of this bell shaped lamp shade 11, then get plural latch members 70 in addition, these latch members 70 are worn perforation 410 backs of the combined hole 301 of this heat sink 30 and this circuit board 41 and locking on the reference column 131 of this conductive contact 13, so that this heat sink 30 and this LED module 40 are fixed on this lamp socket 10, last cover cap 50 cover caps that will be combined with transmissive mirror 60 are more promptly finished the group of this LED light fixture 1 and are established on this bell shaped lamp shade 11.

Please continue with reference to Fig. 4, be the use schematic diagram of the LED light fixture of the utility model tool diversion function; When using this LED light fixture 1, the light that these LED 42 sent reflects away via this transmissive mirror 60, moreover the heat that these LED 42 are produced when luminous then conducts to this radiator 20 via this heat sink 30; On the other hand, extraneous air is after through hole 501 places of this cover cap 50 flow into these lamp socket 10 inside, can enter in the perforate 300 of this heat sink 30, hot gas speed after flowing out from this perforate 300 can be accelerated, and the guiding of the flow deflector 31 by this heat sink 30, enter again in the heat dissipation channel 220 between these radiating fins 22, thereby take away a large amount of heat of this radiator 20; In addition, when airflow passes perforate 300, because of perforate 300 areas that passed less, make the flowing velocity of air-flow to accelerate and drive the speed of free convection, reach the effect of taking away radiator 20 heat fast, moreover the current density after being heated can rise in change, last again from the louvre 120 of this lamp socket 10 or from the surperficial loss of this bell shaped lamp shade 11, reduce the temperature of this LED light fixture 1 in view of the above.

The above only is preferred embodiment of the present utility model, and non-in order to limit scope of patent protection of the present utility model, the equivalence of other utilization the utility model spirit changes, and all should all belong to scope of patent protection of the present utility model.

Claims

1. the LED light fixture of a tool diversion function dispels the heat to described LED light fixture in order to guide an outer gas stream, it is characterized in that this LED light fixture comprises:

One lamp socket has an accommodation space, and this lamp socket offers plural louvre;

One radiator is arranged in this accommodation space, and this radiator comprises most radiating fins, and is formed with a heat dissipation channel between wantonly two radiating fins, and corresponding respectively these louvres of these heat dissipation channels set;

One heat sink amplexiforms on this radiator, and this heat sink is equipped with plural perforate, from this heat sink elongation moulding one flow deflector is arranged at a side of each perforate, and this flow deflector is guided described outer gas stream and entered this heat dissipation channel, and flows out from this louvre; And

One LED module comprises with a circuit board of this heat sink thermo-contact and electrically connects the plural LED of this circuit board.

2. the LED light fixture of tool diversion function as claimed in claim 1 is characterized in that, this lamp socket comprises bell shaped lamp shade with this accommodation space and the section of accepting that extends in this bell shaped lamp shade bottom.

3. the LED light fixture of tool diversion function as claimed in claim 2 is characterized in that these louvres are located on this section of accepting.

4. the LED light fixture of tool diversion function as claimed in claim 2 is characterized in that this lamp socket also includes a conductive contact, and this conductive contact is fixed on the outboard end of this section of accepting.

5. the LED light fixture of tool diversion function as claimed in claim 4, it is characterized in that, also comprise plural latch members, and this conductive contact forms plural reference column, corresponding these reference columns of this heat sink and be provided with plural combined hole, corresponding these reference columns of this circuit board and be provided with plurality of through holes, these latch members wear these combined holes and perforation and lock on this reference column.

6. the LED light fixture of tool diversion function as claimed in claim 1 is characterized in that this radiator includes a hollow circuit cylinder, and these radiating fins are molded on the outer edge surface of this hollow circuit cylinder at interval.

7. the LED light fixture of tool diversion function as claimed in claim 1 is characterized in that, these flow deflectors are a side that is connected this perforate obliquely.

8. the LED light fixture of tool diversion function as claimed in claim 1 is characterized in that, also comprises a cover cap that covers this LED module, and this cover cap is provided with plural through hole.

9. the LED light fixture of tool diversion function as claimed in claim 8 is characterized in that, also comprises a transmissive mirror, and corresponding these LED of this cover cap are provided with the position and are provided with a containing hole, and this transmissive mirror is combined in this containing hole.

10. the LED light fixture of tool diversion function as claimed in claim 9 is characterized in that these through hole rings are located at the outside of this containing hole.