CN103672515A

CN103672515A - LED bulb with efficient heat dissipation function

Info

Publication number: CN103672515A
Application number: CN201310671434.XA
Authority: CN
Inventors: 林英强
Original assignee: Individual
Current assignee: Zhongshan Guangyuan Shijia Electronics Co.,Ltd.
Priority date: 2013-12-10
Filing date: 2013-12-10
Publication date: 2014-03-26
Anticipated expiration: 2033-12-10
Also published as: CN103672515B

Abstract

The invention discloses an LED bulb with an efficient heat dissipation function. The LED bulb comprises a light source, a transparent lamp cover, a lamp body and a power supply. A light source is fixedly arranged on the upper portion of the lamp body, is electrically connected with the power supply arranged in the lamp body and is a columnar light-emitting column, and a plurality of SMD LED lamp beads are distributed on the radial surface of the light source. The edge of the upper portion of the lamp body is covered by the transparent lamp cover. The bulb further comprises a reflective cover, and the reflective cover comprises a barrel body and a bottom plate. The barrel body is arranged on the light-emitting column in a sleeved mode. Light-permeable holes are formed in positions, corresponding to the LED lamp beads, of the barrel body. The top end of the barrel body protrudes out of the transparent lamp cover and is provided with a ventilating hole. A horn-shaped bottom plate for covering the lamp body stretches outwards from the edge of the bottom end of the barrel body in the radial direction. A protrusion part is arranged on the bottom plate and corresponds to the light-permeable holes. A heat dissipation channel penetrating through the LED bulb is further arranged in the LED bulb. The LED bulb is high in brightness and good in heat dissipation effect, and light emitted by the LED bulb is soft and uniform.

Description

A kind of LED bulb of high efficiency and heat radiation

Technical field

The present invention relates to a kind of LED bulb, relate in particular to a kind of LED bulb of high brightness.

Background technology

LED bulb of the prior art generally comprises lamp body, be arranged on the Transparent lamp shade at lamp body top, be positioned at the power supply of lamp body, in Transparent lamp shade, be provided with LED light source, LED light source is electrically connected to the power supply in lamp body, when LED light source electrified light emitting, its light sending can see through Transparent lamp shade and shine out, the object that reaches illumination or decorate.But LED bulb of the prior art is in order to make light soft, not dazzling, normally lampshade is set to opaque structure, with the discomfort of avoiding the straight LED lamp of human eye pearl to cause, reduced thus the brightness of LED lamp, when user uses, in order to reach required brightness, must select more powerful LED bulb, cause the waste of electric energy.Simultaneously, the amount of heat sending due to LED light source and power supply is not as being pulled away in time, will cause LED light source or power supply to burn out, shorten the service life of LED bulb, although LED bulb is provided with radiator in prior art, but radiating effect is undesirable, cannot make LED light source and power supply normally work under lower operating temperature.

Summary of the invention

The present invention is intended to solve above-mentioned mentioned technical problem, provides that a kind of brightness is high, light is soft, the LED bulb of even, good heat dissipation effect.

The object of the invention is to realize by following technical scheme:

A kind of LED bulb of high efficiency and heat radiation, comprise light source, Transparent lamp shade, lamp body and power supply, described light source is fixedly arranged on lamp body top and is electrically connected to the power supply that is arranged at lamp body inside, described Transparent lamp shade covers the top edge at lamp body, described light source is the Column being luminous of column, on its radial surface, be distributed with a plurality of bonded LED lamp pearls, described bulb also comprises reflecting cover, reflecting cover comprises cylindrical shell and base plate, described barrel jacket is loaded on Column being luminous and on position corresponding to LED lamp pearl and offers loophole, the top of described cylindrical shell is protruded Transparent lamp shade outside and is provided with air vent at apical position, the marginal position of described cylindrical shell bottom is extending the horn-like base plate that covers lamp body in the radial direction outward, on base plate, be provided with protuberance, protuberance setting corresponding with loophole, described LED bulb inside is also provided with and connects the inside and outside heat dissipation channel of LED bulb.

Further, described Column being luminous comprises heating column, the LED lamp pearl that is adhered to the aluminium base on heating column and be fixedly arranged on aluminium base and be electrically connected to aluminium base by heat dissipating silicone grease, and heating column is fixedly arranged on the center of radiating part.

Further, on described heating column, be provided with the first through hole that connects heating column center, in described radiating part, be provided with the second through hole that connects the first through hole and radiating part outer surface, described air vent, the first through hole, the second through hole form the inside and outside heat dissipation channel of described perforation LED bulb.

Further, the radial section of described Column being luminous is square.

Further, described reflecting cover surface is coated with reflective membrane.

Further, described Transparent lamp shade with the connected mode of lamp body for being threaded or engagement connection.

The invention has the beneficial effects as follows: by using reflecting cover, Column being luminous is enclosed as much as possible except loophole, prevent that light is reflected back toward Column being luminous.The horn-like base plate of reflecting cover can make light reflection go out outside LED bulb, avoid light in Transparent lamp shade, to be reflected back toward loophole and cause cancelling out each other of light, the corresponding loophole setting of protuberance on base plate, can play the effect of convex lens, the luminous energy that loophole is sent is gone out by protuberance spread reflection, makes light soft, even.The discomforts such as that the radial surface that LED lamp pearl is arranged in Column being luminous can avoid that people's eyes cause on the place ahead of bulb direct view led lamp pearl is dazzling, dazzle.Reflective membrane is set on reflecting cover can further increase LED lamp pearl in the brightness of direction of illumination glazing, reduces light loss.When there is Air Flow LED bulb outside, can the heat of radiator and heating column inside be taken away by heat dissipation channel, thereby the heat radiation of quickening LED bulb extends its service life.

Accompanying drawing explanation

Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail, wherein:

Fig. 1 is LED bulb schematic diagram;

Fig. 2 is the top view of LED bulb in Fig. 1;

Fig. 3 is the A-A cutaway view of LED bulb in Fig. 1;

Fig. 4 is the schematic diagram of reflecting cover in Fig. 1.

The specific embodiment

LED bulb as Figure 1-4, comprises lamp body 1, Transparent lamp shade 2, light source, reflecting cover 4 and power supply (not shown).

The threaded joints 11 that lamp body 1 comprises radiating part 10 and is arranged on radiating part 10 bottoms.The center on radiating part 10 tops is installed with light source, and the marginal position on top is threaded connection or the mode of engagement connection is connected with Transparent lamp shade 2.The inside of radiating part 10 is provided with perforation the first through hole 51 and can be arranged to a plurality of further to improve radiating effect with the second through hole 52, the second through holes 52 of radiating part 10 outer surfaces.Threaded joints 11 forms the standard interface being connected with the lamp socket of prior art, and the electric main that the power supply of lamp body 1 inside provides lamp socket is converted into low-voltage DC for light source, and then driving LED lamp pearl 33 is luminous.

Transparent lamp shade 2 mainly plays protection Column being luminous 3 not to be subject to damage and to reinforce light source to be connected with lamp body, can play and prevent that dust, steam etc. from entering into the circuit surface of Column being luminous 3, causes short circuit simultaneously.

Light source is the Column being luminous 3 of column, comprises heating column 31, aluminium base 32 and LED lamp pearl 33.A plurality of bonded LED lamp pearls 33 are arranged to be fixedly arranged on aluminium base 32 and with aluminium base 32 along the axial single file of Column being luminous 3 and are electrically connected to, thereby form 1 group of luminescence component, on each radial surface of the heating column 31 that radial section is square, be all furnished with 1 group of luminescence component.Aluminium base 32 adheres to by heat dissipating silicone grease on the radial surface of heating column 31 and with heating column 31 and carries out heat transmission.The bottom of heating column 31 is fixedly arranged on the center on radiating part 10 tops and carries out heat transmission with radiating part 10, and heating column 31 is provided with the first through hole 51 that connects its axial centre.

In order to strengthen the luminous effect of LED lamp pearl 33, the light that the light of avoiding LED lamp pearl 33 to send is reflected back or is sent by the LED light pearl 33 of heating column 31 sides adjacent is injected, and causes light loss.In the surrounding of Column being luminous 3 and the top of radiating part 10, add reflecting cover 4, reflecting cover 4 comprises cylindrical shell 41 and base plate 42, its middle cylinder body 41 is sleeved on the radially outline of Column being luminous 3, and the LED lamp pearl 33 on two groups of adjacent luminescence components is separated, simultaneously, on LED lamp pearl 33 corresponding positions, loophole 410 is set, to allow light outwards penetrate.The top 411 of cylindrical shell 41 is roughly taper, and it protrudes the outside of Transparent lamp shade 2.The top of Transparent lamp shade 2 encloses the radially outline of cylindrical shell 41, thereby form, by Transparent lamp shade 2 and reflecting cover 4, encloses the emitting cavity 430 forming, and the light that LED lamp pearl 33 sends is outside ejaculation the from emitting cavity 430 to LED bulb all.411 centers, top of cylindrical shell 41 are provided with air vent 50, air vent 50 and the corresponding setting of the first through hole 51.

The marginal position of cylindrical shell 41 bottoms is extending the horn-like base plate 42 that covers lamp body 1 in the radial direction outward, the horn-like structure of base plate 42 can make light directly reflex to LED bulb place in addition, thereby has avoided light being cancelled out each other in Transparent lamp shade 2.On base plate 42, be provided with protuberance 420, the corresponding setting in position of protuberance 420 and loophole 410, be specially protuberance 420 and be arranged on loophole 410 dead aheads on the perspective plane of base plate 42, so that protuberance 420 can play the effect of convex lens, the luminous energy that loophole 410 is sent is by protuberance 420 spread reflections, so that the light that LED bulb sends is softer evenly, in order further to strengthen reflecting effect, on the outer surface of reflecting cover 4, apply reflective membrane to reduce light loss.

When there is Air Flow LED bulb outside, extraneous air flows into the heat dissipation channel 5 consisting of air vent 50, the first through hole 51, the second through hole 52, the heat in heat dissipation channel 5 is taken away, to improve the effect of heat radiation.

Above embodiment is only not limited in order to technical scheme of the present invention to be described, does not allly depart from any modification of spirit and scope of the invention or is equal to replacement, and it all should be encompassed in the scope of technical solution of the present invention.

Claims

1. the LED bulb of a high efficiency and heat radiation, comprise light source, Transparent lamp shade, lamp body and power supply, described light source is fixedly arranged on lamp body top and is electrically connected to the power supply that is arranged at lamp body inside, described Transparent lamp shade covers the top edge at lamp body, it is characterized in that: the Column being luminous that described light source is column, on its radial surface, be distributed with a plurality of bonded LED lamp pearls, described bulb also comprises reflecting cover, reflecting cover comprises cylindrical shell and base plate, described barrel jacket is loaded on Column being luminous and on position corresponding to LED lamp pearl and offers loophole, the top of described cylindrical shell is protruded Transparent lamp shade outside and is provided with air vent at apical position, the marginal position of described cylindrical shell bottom is extending the horn-like base plate that covers lamp body in the radial direction outward, on base plate, be provided with protuberance, protuberance setting corresponding with loophole, described LED bulb inside is also provided with and connects the inside and outside heat dissipation channel of LED bulb.

2. the LED bulb of a kind of high efficiency and heat radiation according to claim 1, it is characterized in that: described Column being luminous comprises heating column, the LED lamp pearl that is adhered to the aluminium base on heating column and be fixedly arranged on aluminium base and be electrically connected to aluminium base by heat dissipating silicone grease, and heating column is fixedly arranged on the center of radiating part.

3. the LED bulb of a kind of high efficiency and heat radiation according to claim 2, it is characterized in that: on described heating column, be provided with the first through hole that connects heating column center, in described radiating part, be provided with the second through hole that connects the first through hole and radiating part outer surface, described air vent, the first through hole, the second through hole form the inside and outside heat dissipation channel of described perforation LED bulb.

4. the LED bulb of a kind of high efficiency and heat radiation according to claim 1, is characterized in that: the radial section of described Column being luminous is square.

5. the LED bulb of a kind of high efficiency and heat radiation according to claim 1, is characterized in that: described reflecting cover surface is coated with reflective membrane.

6. the LED bulb of a kind of high efficiency and heat radiation according to claim 1, is characterized in that: described Transparent lamp shade with the connected mode of lamp body for being threaded or engagement connection.