CN202691687U

CN202691687U - LED bulb

Info

Publication number: CN202691687U
Application number: CN2012203309371U
Authority: CN
Inventors: 罗海峰; 徐连城; 吴东生; 李广平; 黄开桂
Original assignee: Guangdong Real Faith Energy-Saving Science & Technology Co Ltd
Current assignee: Guangdong Real Faith Energy-Saving Science & Technology Co Ltd
Priority date: 2012-07-09
Filing date: 2012-07-09
Publication date: 2013-01-23
Anticipated expiration: 2022-07-09

Abstract

The utility model provides an LED bulb which comprises a lamp holder, a power supply fixing part, a driving power supply, a heat dissipation sleeve, an LED chip substrate and a light transmission cover. The outer side and the inner end surface of the power supply fixing part are combined with the lamp holder and the driving power supply respectively, one end surface of the heat dissipation sleeve surrounding the outside of the driving power supply is combined with the power supply fixing part, the side surface of the heat dissipation sleeve is combined with an LED chip, and the light transmission cover combined with the heat dissipation sleeve is covered outside the LED chip. The LED bulb is characterized in that the periphery of the heat dissipation sleeve is close to the power supply fixing part and is provided with air holes, the light transmission cover is also provided with air holes, and the heat dissipation sleeve is communicated with the light transmission cover through gas. The LED bulb is simple in structure, scientifically applies convection heat dissipation effect of a chimney, and has fine heat dissipation effects.

Description

A kind of LED bulb

Technical field

The utility model relates to a kind of LED bulb, belongs to the LED lighting field.

Background technology

LED is as new and effective energy-conserving light source, be widely used, it compares advantages such as having luminous efficiency is high, durable for a long time, energy-conserving and environment-protective with traditional lighting source such as fluorescent lamp, incandescent lamp etc., but caloric value is large during owing to LED work, generally all will be the special heat abstractor of LED lamp envelope design.

A kind of LED bulb is disclosed in Sharp Corp's listing product in 2009, bulb comprises heat-dissipating casing, the resin shell of the fixed power source circuit board in the heat-dissipating casing, the power supply circuit board in the resin shell and combine with this power supply circuit board cover LED installing plate on the power supply circuit board, cover on the outer lampshade of LED installing plate, heat-dissipating casing is installed in another resin shell.This resin shell is in conjunction with lamp socket.This product has designed many radiating grooves in order to reach the purpose of heat radiation at heat-dissipating casing.The heat radiation of this LED bulb mainly relies on the conduction of heat.

Yet in the use procedure of this product, find because the temperature of heat-dissipating casing is in use very high, so usually can affect the service life of this LED bulb.

The utility model content

The purpose of this utility model is the deficiency for the problems referred to above, and a kind of LED bulb with great heat radiation effect is provided.

The utility model provides a kind of LED bulb, this LED bulb comprises lamp holder, the power supply fixture, driving power, the heat radiation sleeve, led chip substrate and diffuser, the outside of described power supply fixture and inner face combine with lamp holder and driving power respectively, being enclosed in the outer described heat radiation cartridges sides bottom of driving power combines with described power supply fixture, heat radiation cartridges sides top is in conjunction with the led chip substrate, also be covered with the diffuser that combines with the sleeve that dispels the heat in led chip substrate outside, the periphery of the nearly power supply fixture of described radiating sleeve socket joint is provided with pore, and described diffuser also is provided with pore, and gas is communicated with between described heat radiation sleeve and the diffuser.

Preferably, described LED bulb also comprises the chip fixture for fixed L ED chip substrate, and described chip fixture combines with the outer surface of an end of heat radiation sleeve.

Preferably, described power supply fixture is the cylindric of an end opening, and described power supply fixture is the cylindric of an end opening, and described power supply fixture comprises two cavitys that connect successively, the periphery of the first cavity combines with lamp holder, the periphery of the second cavity combines with the heat radiation sleeve, and the inner surface of the first cavity is provided for installing the draw-in groove of driving power.

Preferably, described heat radiation sleeve comprises the two parts that connect successively, and first is that the side is the approximate truncated cone-shaped of the both ends open of arc, and second portion is the truncated cone-shaped of both ends open, and the projection section of described first and second portion side is overlapping.

Preferably, the opening that the larger opening of described first and second portion are larger combines by joint face, and the less opening of first is towards the power supply conjunction, and the axial length of described first and second portion is close.

Preferably, described heat radiation sleeve first is provided with evenly distributed pore near the side of power supply fixture, total 3-5 of described pore, and the area of pore is the 15-25% of heat radiation sleeve first lateral surface.

Preferably, the inboard of described first and second portion projection lap is provided with the joint portion that combines with diffuser.

Preferably, the side of described heat radiation sleeve second portion is provided with the fluting of fixed L ED chip substrate, and this fluting extends to the less opening of second portion from the side of second portion.

Preferably, described led chip substrate is a plurality of chip substrates, is fixed on the side of heat radiation sleeve second portion between any two adjacent chips substrates with the distance that equates.

Preferably, described chip fixture is the mushroom-shaped of both ends open, and with extend to less opening from the second portion side and combine with a plurality of chip substrates.

Preferably, described diffuser is the billiard table shape of both ends open, and the larger opening of diffuser is in conjunction with heat dissipating housing, and the area of the smaller opening of diffuser is the 10%-20% of diffuser area.

Preferably, the material of described diffuser is glass or plastics.

Preferably, described heat radiation sleeve adopts metal or heat-conducting plastic.

The beneficial effects of the utility model are: the utility model has utilized the principle of cold-hot air convection, a kind of LED bulb that is more conducive to dispel the heat of new construction is provided, and the power supply fixture in the utility model, heat radiation sleeve have all adopted the new design shape that is more conducive to dispel the heat.

Secondly, annexation and the LED bulb difference in the past of the power supply fixture in the utility model, heat radiation sleeve, chip and lampshade are very large, and this new annexation more is conducive to disperse heat.

At last, the utility model is provided with the opening that the confession cold air enters or hot-air sheds in the side near the power supply fixture of heat radiation sleeve, and be provided with the opening that the heat supply sky sheds or cold air enters at the top of lampshade, the length of the heat dissipation channel of cold and hot air circulation has surpassed half of bulb length, can realize good air circulation, more be conducive to the exchange of air.

The utility model is simple in structure, has scientifically used chimney heat loss through convection effect, has good radiating effect.

Description of drawings

Fig. 1 is exploded view of the present utility model.

Fig. 2 is the three-dimensional view of the utility model power supply fixture.

Fig. 3 is the schematic perspective view of the utility model LED bulb.

Fig. 4 is the section TV structure schematic diagram of Fig. 1.

Fig. 5 is the Air Flow schematic diagram.

The specific embodiment

Embodiment 1

Following examples only are used for explanation the present invention, are not used in restriction the present invention, and the modification of making in the utility model protection domain, replacement are all in protection domain of the present utility model.

Embodiment 1

As shown in Figure 1, LED bulb described in the utility model, this LED bulb comprises lamp holder 1, be combined in the lateral surface of the power supply fixture 2 of lamp holder 1 inboard, the driving power 3 that combines with the medial surface of power supply fixture 2, heat radiation sleeve 4 is enclosed in outside the driving power, and heat radiation sleeve 4 combines with power supply fixture 2 near an end of power supply fixture 2, chip substrate 5 is installed in the draw-in groove 41 in heat radiation sleeve 4 outsides, chip fixture 6 combines with the top of heat radiation sleeve 4, and chip fixture 6 fixed chip substrates 5.Diffuser 7 covers on outside the chip substrate 5, and diffuser 7 with the heat radiation sleeve 4 combine, also be provided with pore 71 at diffuser 7.

Heat radiation sleeve 4 comprises two parts successively, first 40 is the approximate truncated cone-shaped of arc for the side of both ends open, second portion 43 is truncated cone-shaped, the less openend 48 of the diameter of first is near power supply fixture 2, the openend that the larger openend of first's diameter and second portion 43 diameters are larger combines by joint face 46, and the axial length of first 40 and second portion 43 approaches.Be provided with evenly distributed pore 42 in first 40 near the side of power supply fixture 2, in the present embodiment, totally 3 at pore 42.Stomatal size is 15% of outside area.The side arrangement of second portion 43 has the fluting 41 of fixed chip substrate 5, and fluting 41 extends to the less opening of second portion diameter 47 from the lateral surface of heat radiation sleeve 4, and the distance between any two adjacent draw-in grooves 41 equates.The medial surface of first 40 combines with the power supply fixture.The side projection of first 40 and second portion 43 overlaps, and the medial surface of the part 45 that projection is overlapping and the larger opening 72 of diffuser 7 combine.In order to realize better heat conduction purpose, the heat radiation sleeve in the present embodiment adopts metal or heat-conducting plastic.

Chip fixture 6 is the mushroom-shaped of both ends open, chip fixture 6 is combined in the outer surface of the less end 47 of heat radiation sleeve second portion 43, and in conjunction with chip substrate 5, the purpose that chip fixture 6 is designed to both ends open be for and pore 42 and pore 71 between form the passage of circulation of air.

Diffuser 7 is the billiard table shape of both ends open, and the area of the smaller opening of diffuser 7 is 10% of diffuser area.In order to realize better printing opacity effect, the material of the diffuser in the present embodiment is glass or plastics.

As shown in Figure 2, power supply fixture 2 is the cylindric of an end opening, and power supply fixture 2 comprises what the periphery of the first cavity 21 and the second cavity 22, the first cavitys 21 combined with lamp holder 1 successively, and the periphery of the second cavity 22 combines with heat radiation sleeve 4.Inner surface at the first cavity 21 is provided with draw-in groove 23, and driving power 3 combines with draw-in groove 23.

As shown in Figure 3, when parts described above combine, when forming the LED bulb that assembles, 7 first 40 and the diffusers 7 that are followed successively by lamp holder 1, power supply fixture 2, heat radiation sleeve 4 from lamp holder 1 to diffuser that can see.Other parts all place bulb inner.

As shown in Figure 4, the LED bulb of the present embodiment analyse and observe installation diagram, power drives part 3 is fixed in the draw-in groove 23 of power supply fixture 2 first cavitys 21 inner surfaces.In the present embodiment, the length of power supply fixture 2 is less than half of driving power 3, and the height of the top of driving power 3 and the divisional plane 46 of heat radiation sleeve 4 is on same level.So the purpose of design is that volume is large in the cavity between power supply fixture and heat radiation sleeve, and the parts of overlapped arrangement are few, are easier to heat radiation.

As shown in Figure 5, shown in Fig. 5-1, when the lampshade of LED bulb was placed down, cold air entered from pore 71, and hot-air is discharged from the pore 42 of heat radiation sleeve 4.Shown in Fig. 5-2, when the lampshade of LED bulb was placed up, cold air entered from the pore 42 of heat radiation sleeve 4, hot-air from lampshade pore 71 discharge.

Claims

1. LED bulb, this LED bulb comprises lamp holder, the power supply fixture, driving power, the heat radiation sleeve, led chip substrate and diffuser, the outside of described power supply fixture and inner face combine with lamp holder and driving power respectively, being enclosed in the outer described heat radiation cartridges sides bottom of driving power combines with described power supply fixture, heat radiation cartridges sides top is in conjunction with the led chip substrate, also be covered with the diffuser that combines with the sleeve that dispels the heat in led chip substrate outside, it is characterized in that, the periphery of the nearly power supply fixture of described radiating sleeve socket joint is provided with pore, and described diffuser also is provided with pore, and gas is communicated with between described heat radiation sleeve and the diffuser.

2. LED bulb according to claim 1 is characterized in that, described LED bulb also comprises the chip fixture for fixed L ED chip substrate, and described chip fixture combines with the outer surface of an end of heat radiation sleeve.

3. LED bulb according to claim 1, it is characterized in that, described power supply fixture is the cylindric of an end opening, and described power supply fixture comprises two cavitys that connect successively, the periphery of the first cavity combines with lamp holder, the periphery of the second cavity combines with the heat radiation sleeve, and the inner surface of the first cavity is provided for installing the draw-in groove of driving power.

4. LED bulb according to claim 1 and 2, it is characterized in that, described heat radiation sleeve comprises the two parts that connect successively, first is that the side is the approximate truncated cone-shaped of the both ends open of arc, second portion is the truncated cone-shaped of both ends open, and the projection section of described first and second portion side is overlapping.

5. LED bulb according to claim 4, it is characterized in that, the opening that the larger opening of described first and second portion are larger combines by joint face, and the less opening of first is towards the power supply conjunction, and the axial length of described first and second portion is close.

6. according to claim 4 or 5 described LED bulbs, it is characterized in that, heat radiation sleeve first is provided with evenly distributed pore near the side of power supply fixture, total 3-5 of described pore, and the area of pore is the 15%-25% of heat radiation sleeve first lateral surface.

7. according to claim 4 or 5 described LED bulbs, it is characterized in that, the inboard of described first and second portion projection lap is provided with the joint portion that combines with diffuser.

8. according to claim 4 or 5 described LED bulbs, it is characterized in that, the side of described heat radiation sleeve second portion is provided with the fluting of fixed L ED chip substrate, this fluting extends to the less opening of second portion from the side of second portion, described led chip substrate is a plurality of chip substrates, is fixed on the side of heat radiation sleeve second portion between any two adjacent chips substrates with the distance that equates.

9. LED bulb according to claim 4, it is characterized in that, described chip fixture is the mushroom-shaped of both ends open, and described chip fixture is combined in the less opening of heat radiation sleeve second portion, and with extend to less opening from the second portion side and combine with a plurality of chip substrates.

10. LED bulb according to claim 1, described diffuser is the billiard table shape of both ends open, and the larger opening of diffuser is in conjunction with heat dissipating housing, and the area of the smaller opening of diffuser is the 10%-20% of diffuser area.

11. LED bulb according to claim 1 is characterized in that, the material of described diffuser is glass or plastics.

12. according to claim 1 or 4 described LED bulbs, it is characterized in that, described heat radiation sleeve adopts metal or heat-conducting plastic.