CN103388767A

CN103388767A - Novel LED (light-emitting diode) bulb lamp

Info

Publication number: CN103388767A
Application number: CN2013103335534A
Authority: CN
Inventors: 林伟健
Original assignee: LEJIAN TECHNOLOGY (ZHUHAI) Co Ltd
Current assignee: LEJIAN TECHNOLOGY (ZHUHAI) Co Ltd
Priority date: 2013-07-17
Filing date: 2013-08-02
Publication date: 2013-11-13
Anticipated expiration: 2033-08-02
Also published as: CN103388767B

Abstract

The invention provides a novel LED (light-emitting diode) bulb lamp comprising a lamp cap, a driving power supply, an LED light source module and a lamp cover, wherein the lamp cover defines a negative pressure cavity, the LED light source module is fixedly arranged in the negative pressure cavity, the lamp cover comprises a glass shell and a capillary soaking layer which is formed on the inner wall of the glass shell and has translucency, a liquid working medium is stored in the capillary soaking layer, and the LED light source module is directly contacted with the capillary soaking layer. The novel LED bulb lamp has the beneficial effects that when the LED bulb lamp works, the liquid working medium continuously and circularly flows in the capillary soaking layer by means of the capillary action without being stagnated on the inner wall of the lamp cover, so that the radiating efficiency of the whole lamp cover is higher, and the radiating effect of the LED bulb lamp is improved; and in addition, since the LED light source module is directly contacted with the capillary soaking layer, and the liquid working medium circularly flows in the capillary soaking layer, the LED bulb lamp can normally work in spite of different installation directions.

Description

A kind of Novel LED bulb lamp

Technical field

The present invention relates to a kind of LED lighting device, be specifically related to a kind of Novel LED bulb lamp.

Background technology

The LED bulb lamp more and more comes into one's own because of its outstanding feature at aspects such as environmental protection, energy-conservation and service lifes, but the knot operating temperature with LED chip rises, its light output will descend and the life-span also will shorten, and therefore requires the setting of LED bulb lamp to have the radiator structure of great heat radiation effect to reduce the knot operating temperature of LED chip.

For solving for example high efficiency and heat radiation problem of the LED lamp of LED bulb lamp, Chinese invention patent application CN201180008735.3 discloses the cooling LED lamp of a kind of steam, its LED light source is arranged in the non-shading container of sealing, non-shading container contains cooling agent, the hot heats coolant that LED light source produces, make the lower non-shading inner surface of container of Contact Temperature after refrigerant evaporates and condense, the cooling agent that condenses refluxes under Action of Gravity Field, the mode by the circulation of coolant fluid-gas phase is for providing the heat conduction approach between LED light source and non-shading inner surface of container thus.

But in this technical scheme, refrigerant evaporates may stagnate thereon after condensing in non-shading inner surface of container, this not only can reduce cycle rate and the rate of heat transfer of cooling agent, and causes the more cooling agent of needs just can realize the high efficiency and heat radiation effect of LED lamp.In addition, because cooling agent is stored in extreme lower position in non-shading container all the time, when the LED lamp was positioned at the special angle position, the heat that LED light source produces was difficult to conduct to cooling agent, causes the LED lamp can't use in this angle position.

Summary of the invention

Main purpose of the present invention provides a kind of LED bulb lamp that improves radiator structure that has, and this LED bulb lamp all can use in any angular position.

For realizing above-mentioned main purpose, the invention provides a kind of Novel LED bulb lamp, comprise lamp holder, driving power, LED light source module and lampshade, lampshade is limited with negative pressure cavity, the LED light source module is fixed in negative pressure cavity, lampshade comprises glass shell and the equal thermosphere of capillary that is formed on the light transmission of glass shell inwall, and liquid refrigerant is stored in the equal thermosphere of capillary, and the LED light source module directly contacts with the equal thermosphere of capillary.

In technique scheme, lampshade comprises glass shell and is formed on the equal thermosphere of capillary of the light transmission of glass shell inwall, store liquid refrigerant in the capillary of the equal thermosphere of capillary, during the work of LED bulb lamp, liquid refrigerant relies on capillarity continue to circulate in the equal thermosphere of capillary and can not stagnate at the inwall of lampshade, therefore lampshade integral body has higher radiating efficiency, has improved the radiating effect of LED bulb lamp.In addition, because the equal thermosphere of LED light source module and capillary directly contacts, liquid refrigerant circulates in the equal thermosphere of capillary, so the LED bulb lamp all can work under various installation direction.

Description of drawings

Fig. 1 is the cross-sectional view according to the LED bulb lamp of described embodiment;

Fig. 2 is the cross-sectional view according to the LED bulb lamp of described embodiment.

The specific embodiment

As shown in Figure 1, the LED bulb lamp comprises lamp holder 1, driving power 2, LED light source module 3 and lampshade 4, lampshade 4 is fixedly connected with lamp holder 1 and driving power 2 and LED light source module 3 is surrounded, and lampshade 4 is limited with a negative pressure cavity 5, and LED light source module 3 is fixed in negative pressure cavity 5.Negative pressure cavity 5 can vacuumize by the confined space that lamp holder 1 and lampshade 4 are limited jointly to process and obtain, thus through vacuumizing process negative pressure cavity 5 internal pressures that obtain can the very low boiling point that can greatly reduce liquid.

Lamp holder 1 can be the master screw formula lamp holder of for example E27 lamp holder, makes thus the LED bulb lamp can be arranged on the spiral lamp holder that the conventional lamp such as incandescent lamp or fluorescent lamp use, and is convenient to conventional lamp is replaced with the LED bulb lamp.

Driving power 2 is arranged on lamp holder 1, and it is electrically connected with lamp holder 1 and LED light source module 3 respectively, and the alternating current that will input to lamp holder 1 is converted to the direct current that is suitable for LED work.Driving power 2 comprises rigidity FR4 printed circuit board (PCB) 21 and other driving power assembly (not shown)s that are installed on printed circuit board (PCB) 21, and wherein the driving power assembly is sealed by the insulating gum cover (not shown).

Printed circuit board (PCB) 21 comprises that self-driven power supply 2 extends to be used for supporting the extension 211 of LED light source module 3 to LED bulb lamp front side, be provided with on printed circuit board (PCB) extension 211 for the conducting wire and the conductive welding disk (not shown) that LED light source module 3 are electrically connected to driving power 2, wherein conductive welding disk is arranged on the front end of printed circuit board (PCB) extension 211.The middle body of LED light source module 3 has a jack 311, the conductive welding disk (not shown) of LED light source module 3 is arranged on the position of contiguous jack 311, the front end of printed circuit board (PCB) extension 211 can insert in this jack 311, be arranged on the conductive welding disk of printed circuit board (PCB) extension 211 front ends and the conductive welding disk of LED light source module 3 and can realize by the mode of welding at jack 311 places being electrically connected, and LED light source module 3 can be weldingly fixed on by this front end of printed circuit board (PCB) extension 211.

LED light source module 3 can be formed by metal base printed circuit board 31 and LED lamp pearl 33 structures that are installed on metal base printed circuit board 31.Can be along being arranged at that bending groove (not shown) on metal base printed circuit board 31 is carried out bending process to metal base printed circuit board 31 and the LED light source module 3 that obtains a solid, making LED light source module 3 have can be in its each circumferential side and the luminous characteristic of end face, the LED bulb lamp that obtains thus has the illuminating effect of all-round light, replacement traditional lighting light fixture preferably.Easily understand, metal base printed circuit board 31 can form the shape of various needs according to the requirement to LED light source module 3 characteristics of luminescences, and this is the routine techniques in this area, therefore at this, omit detailed description.In one embodiment, the metal base printed circuit board 31 of three-dimensional shape is slightly larger than the internal diameter of lampshade 4 openings near the radial dimension of lamp holder 1 one ends, thereby metal base printed circuit board 31 is resisted against on lampshade 4 with certain elastic force, this not only can improve the heat-transfer effect between metal base printed circuit board 31 and lampshade 4, and can the location of auxiliary LED light source module 3 in lampshade 4.

Lampshade 4 comprises glass shell 41 and is formed at the equal thermosphere 42 of capillary of the light transmission of glass shell 41 inwalls, and the equal thermosphere 42 of capillary can, for a porous thin layer with capillary structure, store liquid refrigerant in the capillary of the equal thermosphere 42 of capillary.Working medium can, for water, ether, methyl alcohol, acetone etc., preferably make water as working medium.The equal thermosphere 42 of capillary can form by various existing appropriate method, for example can have at inner-wall spraying one deck of glass shell 41 capillary structure light transmission macromolecule membrane and form the equal thermosphere 42 of capillary., for making combination more closely between macromolecule membrane and glass shell 41, can be provided for supporting the wire netting (not shown) of macromolecule membrane in lampshade 4.Preferably, wire netting adopts memory metal to be prepared from, thereby better plays the fixedly effect of macromolecule membrane of support.

For improving the light effect that of LED bulb lamp, can need to carry out various suitable processing to glass shell 41 according to optics, for example the surface of glass shell is carried out the frosted processing or on its surface, applied optical coating, to meet corresponding optics needs.This is the routine techniques in this area, therefore omit the description to it.

Metal base printed circuit board 31 can directly contact with the equal thermosphere 42 of capillary, thereby the heat that LED lamp pearl 33 produces conducts to the liquid refrigerant in metal base printed circuit board 31 and the equal thermosphere 42 of heated capillary, the liquid of liquid refrigerant-gas phase change makes heat be passed to fast lampshade 4 integral body, and is distributed to the external environment condition of LED bulb lamp by lampshade 4 integral body.

Preferably, metal base printed circuit board 31 surfaces are formed with capillary heat transfer layer 32, and capillary heat transfer layer 32 directly contacts with the equal thermosphere 42 of capillary.The equal thermosphere 32 of capillary has capillary structure equally, and the interior liquid refrigerant that stores equally of capillary heat transfer layer 32.Surface at metal base printed circuit board 31 forms capillary heat transfer layer 32, can reduce the heat transfer distances between LED lamp pearl 33 and liquid refrigerant and increase the contact area of metal base printed circuit board 31 and liquid refrigerant, thereby reduce the thermal resistance between LED lamp pearl 33 and liquid refrigerant, improve the heat dispersion of LED bulb lamp.Preferably, the capillary force that the capillary force that capillary heat transfer layer 32 produces produces greater than the equal thermosphere 42 of capillary, thus liquid refrigerant can flow to capillary heat transfer layer 32 is interior more rapidly, further improves the heat dispersion of LED bulb lamp.

Capillary heat transfer layer 32 can form by the macromolecule membrane that has capillary structure at metal base printed circuit board 31 surface spraying one decks, also can form by on metal base printed circuit board 31 surfaces, capillary channel being set.Preferably, capillary heat transfer layer 32 metal base printed circuit board 31 not mounted LED lamp bulb 33 1 sides surface and with metal base printed circuit board 31 surfaces that the equal thermosphere 42 of capillary contact between formation continuously.

The heat that during work of LED bulb lamp, LED lamp pearl 33 produces is passed to capillary heat transfer layer 32 and the equal thermosphere 42 of capillary through metal base printed circuit board 31, heating is stored in the liquid refrigerant in capillary heat transfer layer 32 and the equal thermosphere 42 of capillary, liquid refrigerant heat absorption is evaporated to gas and is filled in negative pressure cavity 5 and flows to the lower zone of temperature fast, simultaneously the liquid refrigerant in the equal thermosphere 42 of its elsewhere capillary in the effect current downflow of capillary force to capillary heat transfer layer 32 and the equal thermosphere 42 of capillary after the liquid refrigerant evaporation.When gaseous working medium after the interior continuous diffuses flow of negative pressure cavity 5, to contact with the equal thermosphere 42 of the capillary of its elsewhere lower temperature, and then be liquid refrigerant by the absorption of the capillary of the equal thermosphere 42 of capillary and condensation phase change again, this liquid refrigerant nationality is again flowed to capillary heat transfer layer 32 by capillarity.Circulation and so forth, utilize the mode of the liquid of working medium-gas phase circulating phase-change, make the high heat that LED light source module 3 produces continue, evenly conduct to lampshade 4 integral body, by the whole heat radiation rapidly of lampshade 4, thereby reach the beneficial effect that significantly promotes LED bulb lamp radiating effect and service life.

In addition, because liquid refrigerant is to be adsorbed in the capillary structure of the equal thermosphere 42 of capillary and capillary heat transfer layer 32, and rely on capillarity to circulate in the equal thermosphere 42 of capillary and capillary heat transfer layer 32, therefore, even the setting angle of Set arbitrarily LED bulb lamp, can guarantee that also liquid refrigerant circulates and with metal base printed circuit board 31, contact to conduct heat, making the LED bulb lamp all can use and have good radiating effect under various setting angle.

Fig. 2 is the cross-sectional view of the LED bulb lamp of another embodiment, and wherein lampshade 4 forms roughly spherical.One of ordinary skill in the art will readily recognize that the LED bulb lamp in the technical program can have different specifications, the shape of its lampshade 4 also can correspondingly have various variation.Because the specification of LED bulb lamp and corresponding lampshade shape thereof are those skilled in the art's the technology of knowing, no further details to be given herein.

Claims

1. a Novel LED bulb lamp, comprise lamp holder, driving power, LED light source module and lampshade, and described lampshade is limited with negative pressure cavity, and described LED light source module is fixed in described negative pressure cavity, it is characterized in that:

Described lampshade comprises glass shell and the equal thermosphere of capillary that is formed on the light transmission of described glass shell inwall, and liquid refrigerant is stored in the equal thermosphere of described capillary, and described LED light source module directly contacts with the equal thermosphere of described capillary.

2. LED bulb lamp according to claim 1, it is characterized in that: the equal thermosphere of described capillary forms by the macromolecule membrane that the inner-wall spraying one deck at described glass shell has capillary structure.

3. LED bulb lamp according to claim 2, it is characterized in that: the equal thermosphere of described capillary is supported by wire netting.

4. LED bulb lamp according to claim 3, it is characterized in that: described wire netting is prepared from by memory metal.

5. according to claim 1-4 described LED bulb lamps of any one, it is characterized in that: described LED light source module comprises metal base printed circuit board and is formed on the capillary heat transfer layer on described metal base printed circuit board surface, store liquid refrigerant in described capillary heat transfer layer, described capillary heat transfer layer directly contacts with the equal thermosphere of described capillary.

6. LED bulb lamp according to claim 5, it is characterized in that: described capillary heat transfer layer forms by the macromolecule membrane that has capillary structure at described metal base printed circuit board surface spraying one deck.

7. LED bulb lamp according to claim 5, is characterized in that: the capillary force that the capillary force that described capillary heat transfer layer produces produces greater than the equal thermosphere of described capillary.

8. LED bulb lamp according to claim 5, it is characterized in that: described metal base printed circuit board and described LED light source module form a three-dimensional shape.

9. LED bulb lamp according to claim 1, it is characterized in that: described driving power is fixedly connected with described lamp holder, described driving power comprises a printed circuit board (PCB) and the power supply module that is arranged on described printed circuit board (PCB), and described power supply module is sealed by insulating materials.

10. LED bulb lamp according to claim 9, it is characterized in that: described printed circuit board (PCB) extends the front side to described LED bulb lamp from described driving power, and described LED light source module is fixedly supported on described printed circuit board (PCB) and by described printed circuit board (PCB) and described driving power and is electrically connected.