CN102052593A

CN102052593A - Light-emitting diode (LED) bulb

Info

Publication number: CN102052593A
Application number: CN2010101696962A
Authority: CN
Inventors: 张浙东
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-11-10
Filing date: 2010-04-23
Publication date: 2011-05-11

Abstract

The invention relates to the field of illuminating and discloses a light-emitting diode (LED) bulb. The LED bulb comprises a lamp cap, wherein a shell is fixed at the lower end of the lamp cap; the lower end of the lamp cap is connected with a radiating fin; the radiating fin is connected with a heat pipe; the condensation end of the heat pipe is connected with a radiating ring; the heat pipe is positioned in the cavity of the shell; a metal lamp panel is fixed at the lower end of the heat pipe; and the metal lamp panel is provided with an LED which can be electrified to emit light. Heat pipe technology is applied to the LED bulb, so that the problem of radiating is solved, integration and high power of the LED bulb are realized and the popularization of the LED bulb becomes possible.

Description

The LED bulb

Technical field

The present invention relates to lighting field, relate in particular to a kind of LED lighting device.

Background technology

Traditional lighting device mainly is incandescent lamp and fluorescent lamp.

Wherein, incandescent lamp is because cheap and use characteristics such as convenient and be used widely, but because its luminous efficiency is lower, i.e. later stage use cost height can not satisfy people's demand.

The fluorescent lamp luminous efficiency has had than incandescent lamp and has increased substantially, but its service life is short, also can not satisfy people's demand gradually.

In recent years, LED develops into the novel illumination light source rapidly with advantages such as its high efficiency, long-lives, but does not up to the present also enter domestic lighting fully.Returning its reason mainly is two aspects, the one, and industry standard is still incomplete, and the product category on the market is various, and it needs direct current supply, the application inconvenience; The 2nd, because the LED heat radiation directly has influence on its effect, power hour heat is also little, but its brightness can not reach lighting demand, adds high-power brightness and can reach demand, but dispels the heat bad directly have influence on again its luminous efficiency and life-span.

Because incandescent lamp and fluorescent lamp use history longer, technology is ripe relatively, and for standard market, International Power association has formulated the lamp holder of bulb, the various standards of fluorescent tube by standard agreement, has unified international standard, is also approved by user and businessman for many years.

Summary of the invention

The objective of the invention is to: a kind of LED bulb is provided, makes its application simpler, heat radiation is better.

In order to solve above technical problem, the technical solution used in the present invention is:

A kind of bulb comprises: lamp holder, and fin, shell, heat pipe, the metal lamp plate, light emitting diode,

Lower end at described lamp holder is connected with fin, is connected with shell and heat pipe on described fin, and described heat pipe is positioned at the cavity of described shell, and the condensation end of described heat pipe is connected with described fin;

Be fixed with a metal lamp plate in the lower end of this heat pipe, but described metal lamp plate is provided with the light emitting diode of electrified light emitting.

Alternatively, include DC power supplier in the described lamp holder.

Alternatively, described fin adopts copper sheet.

Alternatively, described shell is made up of metal shell that is arranged on top and the light transmitting shell that is arranged on the bottom,

The inwall of wherein said metal shell scribbles reflectorized material,

Described light transmitting shell adopts light transmissive materials such as PC or glass to make.

Alternatively, described metal lamp plate is circular.

Alternatively, also be provided with the PCB circuit board on the described metal lamp plate, described PCB circuit board is used to control lighting of described light emitting diode.

Alternatively, described light emitting diode is selected the subsides light emitting diode for use.Therefore, the technical scheme of the application embodiment of the invention.Heat pipe is hundreds of times and even thousands of times of common metal material because of its thermal conductivity factor, it can not need additionaling power by very little cross-sectional area long-distance transmissions with a large amount of heat energy, so its heat energy that LED can be sent is promptly discharged outside the lamp by metal lamp plate, heat pipe, fin, keep the low-temperature condition in the foam, for the synthetic steady operation that reaches of the high power of LED provides condition.

Owing in bulb, use heat pipe to dispel the heat in the present embodiment first, advantages such as in light weight, simple in structure, the good heat dissipation effect of heat pipe itself, so using it in bulb dispels the heat, help breaking through the luminous power of puzzled people bulb for a long time and the contradiction between the heat radiation, make the luminous power of bulb not be subjected to the restriction of bulb volume, realized small size, high-power bulb.

Because the lamp holder in the present embodiment adopts conventional incandescent international standard size, existing compatible with the conventional lights cause for gossip again, the built-in dc source of lamp holder or adopt direct ac driven light-emitting diodes makes the present invention can directly be installed on traditional socket, and it is convenient to use.

Description of drawings

Accompanying drawing described herein is used to provide further understanding of the present invention, constitutes the application's a part, does not constitute to improper qualification of the present invention, in the accompanying drawings:

The structural representation of a kind of LED bulb that Fig. 1 provides for the embodiment of the invention 1.

The specific embodiment

Describe the present invention in detail below in conjunction with accompanying drawing and specific embodiment, be used for explaining the present invention in this illustrative examples of the present invention and explanation, but not as a limitation of the invention.

Embodiment 1:

Referring to shown in Figure 1, the bulb that present embodiment provides mainly comprises lamp holder 101, fin 102, shell 103, heat pipe 104, metal lamp plate 105 and a plurality of light emitting diode 106.

Wherein, fin 102 can spin or buckle connects or mode such as fixedly connected is connected the lower end of lamp holder 101 by screw thread, and this fin 102 is made by heat dispersion good metal or nonmetallic materials.

Shell 103 is arranged on the lower end of lamp holder 101, and it can adopt the mode that spins also can adopt buckle or other fixed form.

The condensation end of heat pipe 104 is connected on the fin 102, such as the centre that the condensation end of heat pipe 104 can be wrapped in heat dissipating ring 102, this heat pipe 104 is positioned at the cavity of shell 103, lower end at this heat pipe 104 is connected with metal lamp plate 105, this metal lamp plate 105 is provided with light emitting diode 106, can be luminous during these light emitting diode 106 energisings, realize illumination.

For the user can directly be used with the occupation mode of conventional incandescent, lamp holder in the present embodiment adopts the general international standard size of Incandescence lamp holder, and in the lamp holder dc power supply can be installed, so just can use conventional DC electrified light emitting diode, if dc power supply is not installed in the lamp holder, can use ac driven light-emitting diodes, so also can realize the direct applied effect of family's 220V alternating current.

Owing in the present embodiment, in bulb, use dc power supply or ac driven light-emitting diodes, make the use of LED bulb convenient more.

Because light-emitting diode chip for backlight unit 106 is the meeting evolution of heat when work, power is big more, the working time is long more, its caloric value is big more, existing lamp envelope design is solving main volume by the increase bulb on the heat dissipation problem, improve area of dissipation and accelerate heat radiation, and because restrictions such as the mounting means of bulb and safety in utilization, its volume is limited to, thereby causes the power of bulb to be restricted.

And owing to present embodiment is installed in light emitting diode on the metal lamp plate 105, and the upper end at metal lamp plate 105 connects heat pipe 104, therefore, the heat that sends during 106 work of luminous component----light-emitting diode chip for backlight unit can pass through metal lamp plate 105 rapidly, transfer to an end of heat pipe 104 then, when 104 1 sections of heat pipes are heated, working solution in heat pipe 104 capillaries evaporates rapidly, steam flows to an other end under small pressure differential, at the other end heat is passed to fin 102, by heat dissipating ring 102 heat is distributed to the outside, steam in the heat pipe 104 distributes the back regelation at heat and becomes liquid, liquid flows back to evaporation ends along porous material by the effect of capillary force again, and so circulation distributes the fin 102 of heat at the other end of heat pipe 104 continuously fast, realizes quick heat radiating.

Heat pipe 104 mainly is made up of three parts: 1, main body is the metal tube (shell) of a sealing; 2, a little amount of work medium (working solution) is arranged in the internal cavities; 3, capillary structure (tube core).Heat pipe 104 is hundreds of times and even thousands of times of common metal material because of its thermal conductivity factor, it can not need additionaling power by very little cross-sectional area long-distance transmissions with a large amount of heat energy, so its heat energy that LED can be sent is promptly discharged outside the lamp by metal lamp plate, heat pipe, fin, keep the low-temperature condition in the foam, for the synthetic steady operation that reaches of the high power of LED provides condition.

Owing in bulb, use heat pipe to dispel the heat in the present embodiment first, advantages such as in light weight, simple in structure, the good heat dissipation effect of heat pipe itself, so using it in bulb dispels the heat, help breaking through the luminous power of puzzled people bulb for a long time and the contradiction between the heat radiation, make the luminous power of bulb not be subjected to the restriction of bulb volume, realized small size, high-power bulb.Because the lamp holder in the present embodiment adopts conventional incandescent international standard size, existing compatible with the conventional lights cause for gossip again, the built-in dc source of lamp holder or adopt direct ac driven light-emitting diodes makes the present invention can directly be installed on traditional socket, and it is convenient to use.

In order to improve the radiating effect of this bulb, shell 103 can be arranged to up and down two parts, its top adopts heat sink material to make (heat dissipating housing 1031), and its inwall scribbles reflector layer, in order to improve light extraction efficiency; The latter half adopts transparent material to make (light-permeable lampshade 1032), makes such as glass or light-permeable PC material, and heat dissipating housing 1031 can adopt with light-permeable lampshade 1032 and spin, buckle or fixed bonding mode link together.

In practice in order to obtain best illuminating effect, can so that the relative position of light-permeable lampshade 1032 and metal lamp plate 105 be: metal lamp plate 105 is in the cavity of light-permeable lampshade 1032, what make that light on the light emitting diode 106 on the metal lamp plate 105 can be best sees through light-permeable lampshade 1032, realizes the external illumination of maximal efficiency.

In addition, in the present embodiment, metal lamp plate 105 can be rounded, square or other different shape, again the light emitting diode on it 106 can be rounded, square or other fancy distribution of shapes on metal lamp plate 105, do not give unnecessary details one by one at this.

In addition, in order further to improve the intelligent of this LED bulb, in metal lamp plate 105 Shanghai PCB circuit board (not drawing among the figure) can be set, the PCB circuit board is used to control lighting of light emitting diode 106 on the metal lamp plate 105, such as switch, light and shade etc.

Need to prove that in the present embodiment, from packing forms, this light emitting diode 106 can be selected paster, various packing forms such as high-power for use; Be provided with from power supply, this light emitting diode 106 can be selected the common light emitting diode of not being with built-in power for use, and also available built-in power can be directly by exchanging the special light emitting diode that drives.

Need to prove that getting heat pipe 104 in the present embodiment can also can be many for one.More than the technical scheme that the embodiment of the invention provided is described in detail, used specific case herein the principle and the embodiment of the embodiment of the invention are set forth, the explanation of above embodiment only is applicable to the principle that helps to understand the embodiment of the invention; Simultaneously, for one of ordinary skill in the art, according to the embodiment of the invention, the part that on the specific embodiment and range of application, all can change, in sum, this description should not be construed as limitation of the present invention.

Claims

1. bulb comprises: lamp holder, and fin, shell, heat pipe, the metal lamp plate, light emitting diode is characterized in that,

2. a kind of bulb according to claim 1 is characterized in that,

Include DC power supplier in the described lamp holder.

3. a kind of bulb according to claim 1 is characterized in that,

Described fin adopts copper sheet.

4. a kind of bulb according to claim 1 is characterized in that,

Described shell is made up of metal shell that is arranged on top and the light transmitting shell that is arranged on the bottom,

The inwall of wherein said metal shell scribbles reflectorized material,

5. a kind of bulb according to claim 1 is characterized in that,

Described metal lamp plate is circular.

6. a kind of bulb according to claim 1 is characterized in that,

Also be provided with the PCB circuit board on the described metal lamp plate, described PCB circuit board is used to control lighting of described light emitting diode.

7. a kind of bulb according to claim 1 is characterized in that,

Described light emitting diode is selected the subsides light emitting diode for use.