CN101975342B

CN101975342B - Metal and ceramic mixed heat-dissipating LED ball bulb lamp

Info

Publication number: CN101975342B
Application number: CN2010102824794A
Authority: CN
Inventors: 袁世俊; 袁昭
Original assignee: LUOYANG BOLIAN NEW ENERGY TECHNOLOGY DEVELOPMENT Co Ltd
Current assignee: Shenzhen Fu Fang Technology Co., Ltd.
Priority date: 2010-09-13
Filing date: 2010-09-13
Publication date: 2013-08-07
Anticipated expiration: 2030-09-13
Also published as: CN101975342A

Abstract

The invention provides a metal and ceramic mixed heat-dissipating LED ball bulb lamp, belonging to the technical field of LED illumination. The heat dissipating part of the lamp has enough air contact surface by using metal of a standard lamp holder part and a heat dissipating material of an outer shell, and high heat conductivity material copper or aluminum is used as a secondary heat conducting medium. Heat energy is sequentially transferred to a heat conducting bin (4) made of a high heat conductivity metal material and the standard lamp holder metal part used for connecting a standard lamp holder, and a part of heat energy is dissipated directly through the metal of the filament lamp standard lamp holder and the heat-resisting material of the outer shell. The heat-dissipating outer shell is made of aluminum oxide ceramics. The heat conducting bin made of the high heat conductivity metal material is reliably connected with the aluminum oxide ceramics in heat conduction by using the characteristics of high air permeability and continuous elasticity close contact of a relatively medium heat conductivity metal spring (6), and different thermal expansion coefficient stresses of aluminum alloy metal and ceramics are effectively overcome.

Description

A kind of metal, pottery mix the cooling LED bulb lamp

Technical field

The present invention relates to the LED lighting technical field, disclose a kind of metal, pottery mixing cooling LED bulb lamp.

Background technology

Because large power white light LED is the appearance of Light-Emitting Diode, at present the LED light fixture is just with efficiently, energy-conservation, long-lived, advantages such as environmental protection enter lighting field fast, in the made various light fixtures of White-light LED chip, bulb lamp is one of topmost light fixture of traditional lighting, in present product, because the characteristic of great power LED low-voltage and high-current, all must have on the LED light fixture enough heat sink materials and with enough big and air contact-making surface, aluminium and aluminium alloy heat sink material are in the present high thermal conductivity coefficient metal, cost performance is the highest and use maximum metals in the LED light fixture, pottery also is the heat sink material of nearly section time fast development, toxicity is big during except production, outside the beryllium oxide ceramics of material cost costliness, the radiator of aluminium oxide ceramics uses in the LED light fixture in a large number, its advantage is to insulate, with big with the contact-making surface of air with volume metal ratio, but the thermal conductivity factor of aluminium oxide is lower, in application, must influence the secondary thermal resistance of heater and ceramic heat-dissipating body, at the LED bulb lamp that uses aluminium alloy and aluminium oxide ceramics to dispel the heat at present, compare with traditional bulb lamp, all be that area of dissipation is much larger than light-emitting area, this feature seriously influences the lighting angle of LED bulb lamp, luminous mass and attractive in appearance, can't install and use in many occasions especially at all, become one of major reason that seriously influences the popularization and application of LED light fixture in lighting field.

Summary of the invention

For addressing the above problem, the objective of the invention is to disclose a kind of metal, pottery mixing cooling LED bulb lamp, this lamp utilizes the advantage separately of heat-conducting metal and aluminium oxide ceramics, reasonably connect, the heat energy that dissipates efficiently under the situation that guarantees to provide led chip enough to dispel the heat, makes the heat radiation volume of LED bulb lamp can accomplish minimum, make this lamp under safer situation, replaceablely be installed in any place with brightness incandescent lamp and electricity-saving lamp.

For achieving the above object, the present invention adopts following technical scheme:

1, in order to guarantee that radiator portion has enough and air contact-making surface, this lamp utilizes the metal of standard lamp holder and the heat sink material of shell, adopt highly heat-conductive material copper or aluminium as secondary heat conduction medium, and successively thermal energy transfer given heat radiation storehouse that the high thermal conductivity coefficient metal material makes, be used for the standard lamp head metal part that is connected with the standard lamp socket, and direct metal and the shell heat proof material help dissipative part heat energy by incandescent lamp standard lamp socket;

2, utilize the height insulation and the performance that contacts with air of aluminium oxide ceramics, as heat-dissipating casing;

3, utilize highly-breathable and the lasting elastic force of the metal spring of medium relatively thermal conductivity closely to contact characteristics, the heat radiation storehouse that makes the high thermal conductivity coefficient metal material make is connected with aluminium oxide ceramics heat conduction reliably, and effectively overcomes the different heat expansion coefficient stress of aluminium and Al-alloy metal and pottery;

Described a kind of LED metal, pottery mix the heat radiation bulb lamp, have glass ball bulb lampshade (10), LED luminescence chip (8), constant-current supply part and cap part; The ring of lampshade bottom week, the outside was the Heat Conduction Material with heat dissipation characteristics, according to the heat radiation approach of LED, the thermal conductivity factor that Heat Conduction Material press material from inside to outside from big to small, setting rationally; Be provided with the heat conduction storehouse of high thermal conductivity coefficient metal material, the heat conduction storehouse of hollow blind pipe structure, the inner LED constant-current power supply circuit of installing, the heat conduction storehouse of described high thermal conductivity coefficient metal material, its underpart closely contacts with the inwall of standard lamp head metal shell; The heat conduction storehouse of described high thermal conductivity coefficient metal material, the top arranges the led chip metal base circuit board; On the described metal base circuit board led chip is installed; In high thermal conductivity coefficient metal material heat conduction storehouse upper outer layer, have the aluminium oxide ceramics heat-dissipating casing, between heat conduction storehouse and aluminium oxide ceramics heat-dissipating casing, be provided with metal spring.

The heat that led chip produces directly is diffused into the high thermal conductivity coefficient metal material heat conduction storehouse of being fixedlyed connected with it by fixed screw by metal base circuit board, and heat energy directly is sent to the metal shell of standard lamp head, and make with lamp socket that lamp holder is connected in metal and housing parts dissipative part heat energy, another part heat energy in heat conduction storehouse then is transmitted to the aluminium oxide ceramics heat-dissipating casing that closely contacts with metal spring by the metal spring that is centered around its outer wall, the heat energy of air dissipation towards periphery.

Owing to adopted as above scheme, the present invention has following characteristics:

Owing to adopted cap part to participate in the scheme of heat radiation, make light fixture expose radiator portion and reduce that bigger luminous component makes the light fixture profile more near traditional incandescent lamp relatively, can be installed in the various occasions that incandescent lamp and power saving fluorescent lamp are used; This lamp is except cap part, and the place that the people can touch all is high insulator, has eliminated the safe voltage that metal heat sink needs, and is to the dependence that the power supply circuits high-low pressure is isolated, safer in the use; Rationally compact metal and ceramic combination make the led chip longer service life that the more attractive in appearance and better radiating effect of this lamp makes.

Description of drawings

Fig. 1 be LED metal among the present invention, pottery mix the heat radiation bulb lamp wherein 1/2 be the structural representation of section.

Fig. 2 is the structure chart in heat conduction storehouse among the present invention.

Among the figure: 1, the screw socket live wire utmost point, 2, the lamp holder insulator, 3, the screw socket zero line utmost point, 4, the heat conduction storehouse, 5, aluminium oxide ceramics heat-dissipating casing, 6, metal spring, 7, metal base circuit board, 8, led chip, 9, fixed screw, 10, glass ball bulb, 11, the LED constant-current power supply circuit.

The specific embodiment

With specific embodiment the present invention is illustrated by reference to the accompanying drawings:

As shown in Figure 1, described a kind of LED metal, pottery mix the heat radiation bulb lamp, have glass ball bulb lampshade 10, LED luminescence chip 8, constant-current supply part and cap part; The ring of lampshade bottom week, the outside was the Heat Conduction Material with heat dissipation characteristics, according to the heat radiation approach of LED, the thermal conductivity factor that Heat Conduction Material press material from inside to outside from big to small, setting rationally; Be provided with the heat conduction storehouse 4 of high thermal conductivity coefficient metal material, the high thermal conductivity coefficient metal material can be aluminum or aluminum alloy, copper or copper alloy; Among this embodiment, adopt the aluminum or aluminum alloy material; The heat conduction storehouse 4 of hollow blind pipe structure, the inner LED constant-current power supply circuit 11 of installing; In conjunction with Fig. 2,4 upper periphery uniform passage in heat conduction storehouse is convenient to circulation of air; LED constant-current power supply circuit 11 is connected with metal base circuit board 7 by lead; The bottom in described heat conduction storehouse 4 closely contacts with the metal shell inwall of the standard screw socket zero line utmost point 3; Heat conduction storehouse 4, top arrange metal base circuit board 7; Metal base circuit board 7 can be copper, or aluminum-based circuit board; At the metal base circuit board 7 as secondary heat conduction medium led chip 8 is installed; In heat conduction storehouse 4 upper outer layer, have aluminium oxide ceramics heat-dissipating casing 5, between heat conduction storehouse 4 and aluminium oxide ceramics heat-dissipating casing 5, be provided with metal spring 6.

Operation principle is as follows:

1, in order to guarantee that radiator portion has enough and air contact-making surface, this lamp has utilized the metal of incandescent lamp standard lamp holder and the heat sink material of shell, adopt highly heat-conductive material copper or aluminium as secondary heat conduction medium, and successively thermal energy transfer given heat conduction storehouse that the high thermal conductivity coefficient metal material makes, be used for the standard lamp head metal part that is connected with the standard lamp socket, and direct metal and the shell heat proof material help dissipative part heat energy by incandescent lamp standard lamp socket;

3, utilize highly-breathable and the lasting elastic force of the metal spring of medium relatively thermal conductivity closely to contact characteristics, the heat conduction storehouse that makes the high thermal conductivity coefficient metal material make is connected with aluminium oxide ceramics heat conduction reliably, and effectively overcomes the different heat expansion coefficient stress of aluminium and Al-alloy metal and pottery;

Among this embodiment, described lamp holder is the standard lamp socket that incandescent lamp is electrically connected with the city, and present embodiment is that example is introduced its operation principle with E27 standard screw socket, and the dimensional standard that changes lamp holder can cooperate the lamp socket of other standard, and principle is identical.The screw socket live wire utmost point 1 and lamp holder insulator 2, the standard screw socket that the screw socket zero line utmost point 3 is formed is electrically connected with～220V city, isolate and be converted to low pressure by the LED constant-current power supply circuit, high frequency, constant-current supply is lighted led chip 8, be distributed on the heat that the led chip 8 on the metal base circuit board 7 produces according to the wattage difference, directly be diffused into by the fixedly connected heat conduction storehouse 4 of fixed screw 9 by metal base circuit board 7, the screw socket zero line utmost point 3 that heat conduction storehouse 4 directly is sent to metal structure with heat energy makes metal and the housing parts dissipative part heat energy in the incandescent lamp standard lamp socket that is connected with screw socket, another part heat energy of heat conduction silo wall then passes to the aluminium oxide ceramics heat-dissipating casing 5 that closely contacts with metal spring by the metal spring 6 that is centered around outer wall, the heat energy of air dissipation towards periphery.

Claims

1. a metal, pottery mix the cooling LED bulb lamp, have glass ball bulb lampshade (10), LED luminescence chip (8), constant-current power supply circuit (11) and Incandescence lamp holder; It is characterized in that:

The metal of the shell (5) of the radiator portion utilization heat radiation of a, described LED bulb lamp and the standard lamp holder of incandescent lamp makes radiator portion have enough faces to contact with air; The heat that the LED luminescence chip (8) of described LED bulb lamp produces, directly be diffused into the heat conduction storehouse (4) of the high thermal conductivity coefficient metal material of being fixedlyed connected with it by fixed screw (9) by metal base circuit board (7), and heat energy directly is sent to the metal shell of Incandescence lamp holder, and by the metal dissipative part heat energy in the standard lamp socket of the incandescent lamp that is connected with Incandescence lamp holder; Another part heat energy in heat conduction storehouse (4) then is transmitted to the shell (5) of the described heat radiation that closely contacts with metal spring (6), the heat energy of air dissipation towards periphery by the metal spring (6) that is centered around its outer wall;

B, the height insulation that utilizes aluminium oxide ceramics and the performance that contacts with air are as the shell (5) of described heat radiation;

C, utilize the metal metal spring of neutral relatively thermal conductivity (6) to have highly-breathable and continue elastic force and closely contact characteristics, make that forming heat conduction reliably between heat conduction storehouse (4) and the aluminium oxide ceramics of high thermal conductivity coefficient metal material of radiator portion is connected;

Wherein, radiator portion is the ring week external structure of lampshade bottom, and radiator portion adopts the described heat conduction storehouse (4) of high thermal conductivity coefficient metal material of copper, copper alloy, aluminum or aluminum alloy making as secondary heat conduction medium;

Wherein, described radiator portion is the Heat Conduction Material with heat dissipation characteristics, heat radiation approach according to the LED bulb lamp, the thermal conductivity factor that Heat Conduction Material is pressed material from inside to outside from big to small, rationally arrange: encircle the heat conduction storehouse (4) that all external structures are provided with the high thermal conductivity coefficient metal material, described heat conduction storehouse (4) is hollow blind pipe structure, the inner LED constant-current power supply circuit (11) of installing in described heat conduction storehouse (4), and bottom, described heat conduction storehouse (4) closely contacts with the metal shell inwall of Incandescence lamp holder; Top, described heat conduction storehouse (4) arranges metal base circuit board (7); Described metal base circuit board (7) is gone up LED luminescence chip (8) is installed; In described heat conduction storehouse (4) upper outer layer, be provided with the shell (5) of the described heat radiation with heat dissipation characteristics aluminium oxide ceramics system, between the shell (5) of described heat conduction storehouse (4) and described heat radiation, be provided with described metal spring (6).

2. a kind of metal as claimed in claim 1, pottery mix the cooling LED bulb lamp, and it is characterized in that: described metal base circuit board (7) is the copper base circuit board.

3. a kind of metal as claimed in claim 1, pottery mix the cooling LED bulb lamp, it is characterized in that: described metal base circuit board (7) is aluminum-based circuit board.