CN203298263U

CN203298263U - Silicone cooling device for light-emitting diode (LED) lamp tube

Info

Publication number: CN203298263U
Application number: CN2013203754336U
Authority: CN
Inventors: 朱浩松
Original assignee: Chongqing Liangkang Photoelectric Science & Technology Co Ltd
Current assignee: Chongqing Liangkang Photoelectric Science & Technology Co Ltd
Priority date: 2013-06-27
Filing date: 2013-06-27
Publication date: 2013-11-20
Anticipated expiration: 2023-06-27

Abstract

The utility model relates to a silicone cooling device for an LED lamp tube and belongs to the technical field of LED cooling. The silicone cooling device is characterized in that silicone and graphite are used, and during usage, most of heat on lamp holders is conducted to silicone between an aluminum substrate and a cooling aluminum plate rapidly by the graphite of the bottom and then conducted to the cooling aluminum plate through the silicone. Meanwhile, the other part of heat is dissipated rapidly through the silicone of the side of the lamp holder. The silicone cooling device has the advantages that the graphite and the silicone are mounted below the concentratedly heated lamp holders of LED lamp beads, and the silicone is smeared on the peripheries of the sides of the lamp holders, accordingly, heat generated by the LED lamp beads can be dissipated rapidly through characteristics that the graphite and the silicone can transmit heat easily, the cooling efficiency is greatly improved, and the temperature of the LED lamp beads is reduced. Besides, the silicone is smeared on the peripheries of and under the LED lamp beads, so that a damp-proof and dust-proof role can be played, and the effective service life of the whole LED lamp beads is prolonged.

Description

The silica gel heat abstractor of LED fluorescent tube

Technical field

The utility model belongs to the silica gel heat abstractor in the heat dissipation technology field of LED light fixture, particularly a kind of LED fluorescent tube.

Background technology

The same with other light source, semiconductor light emitting diode (LED) also can produce heat during operation, and how much it depends on whole luminous efficiency.Power up outside under energy, the radiation recombination generation electroluminescent in electronics and hole, near the light that radiates PN junction also need just can arrive at the external world through semiconductor medium and the encapsulation medium of chip itself.Comprehensive electric current injection efficiency, radioluminescence quantum efficiency, chip exterior light take out efficiency etc., and finally probably only having the input electric energy conversion of 30-40% is luminous energy, and the energy of all the other 60-70% mainly transforms heat energy with the form of the lattice vibration of non-radiative compound generation.

In general, whether the work of LED lamp is stable, the quality quality, and most important with lamp body heat radiation itself, the heat radiation of the high-brightness LED lamp on market, usually adopt natural heat dissipation, and effect is unsatisfactory.The LED light fixture that LED light source is made, be comprised of LED, radiator structure, driver, lens, and therefore heat radiation is also a part and parcel, if LED can not finely dispel the heat, its life-span also can be influenced.

At present, the heat dissipating method of LED mainly contains the aluminium radiating fin, with the aluminium radiating fin, as the part of shell, increases area of dissipation; The heat-conducting plastic shell, use LED insulating radiation plastics substitution of Al alloy to make radiator; The surface emissivity radiating treatment, smear the heat loss through radiation paint, and heat is taken away the lamp housing surface with radiation mode; The air fluid mechanics, utilize the lamp housing profile, produces the convection current air; Fan, inner with long-service life high-efficiency fan reinforcement heat radiation at lamp housing; Heat pipe, lead the shell radiating fin with heat by LED chip; Liquid ball bubble, the transparency liquid that thermal conductivity is higher are filled in lamp body ball bubble; Utilize lamp holder, the lamp holder heat radiation of larger metal surface is arranged as screw socket; These methods are each has something to recommend him, can both solve some problems, but limitation is arranged.

The utility model content

Technical problem to be solved in the utility model is to provide a kind of device that adopts silica gel and graphite to carry out comprehensive heat radiation,, in order to the heat Quick diffusing is gone out, extends the service life of LED.

For solving the problems of the technologies described above, the technical scheme that the utility model adopts is a kind of silica gel heat abstractor of LED fluorescent tube, comprise aluminium base, it is characterized in that between described aluminium base and heat-dissipating aluminium plate being coated with and spread silica gel and used silica gel heat conduction, the another side installing insulating circuit board of aluminium base, insulating circuit board appearance are coated with and have spread one deck silica gel; Dig hole on aluminium base and insulating circuit board, filled the silica gel between graphite and direct contact aluminium base and heat-dissipating aluminium plate in hole; Then the centre of the lamp socket bottom surface of LED lamp pearl is directly contacted with graphite, the outer shroud position of lamp socket bottom surface is connected with insulating circuit board, and the side of lamp socket is coated with the silica gel that is layered on the insulating circuit board outer surface and surrounds.

During use, the heat major part on lamp socket is conducted to the silica gel between aluminium base and heat-dissipating aluminium plate rapidly by the graphite of bottom surface, then by silica gel, conduction is to heat-dissipating aluminium plate; Simultaneously, separately some is distributed rapidly by the silica gel of lamp socket side.

The beneficial effects of the utility model are to be heated relatively below the lamp socket of concentrating graphite and silica gel have been installed in LED lamp pearl, be coated with and spread silica gel in the side of lamp socket surrounding, can utilize like this characteristic that graphite and silica gel easily conduct heat that the heat that LED lamp pearl produces is distributed rapidly by graphite and silica gel, greatly improved radiating efficiency, reduced the temperature of LED lamp pearl, silica gel be coated with the surrounding that is layered on LED lamp pearl and under, can also play moistureproof and dustproof effect, extend the Acceptable life of whole LED lamp pearl.

Description of drawings

Fig. 1 is the cross-sectional view of the silica gel heat abstractor of the utility model LED fluorescent tube.

Fig. 2 is the overall structure schematic diagram of the silica gel heat abstractor of the utility model LED fluorescent tube.

In figure: 1. lamp pearl, 2. lamp socket, 3. graphite, 4. silica gel, 5. insulating circuit board, 6. aluminium base, 7. heat-dissipating aluminium plate.

The specific embodiment

The utility model is described in further detail below in conjunction with embodiment.

As shown in the figure, be coated with paving one deck silica gel 4 between the aluminium base 6 of LED fluorescent tube and heat-dissipating aluminium plate 7,, at the another side installing insulating circuit board 5 of aluminium base 6, in insulating circuit board 5 appearances, be coated with again paving one deck silica gel 4; Dig hole on aluminium base 6 and insulating circuit board 5, will fill graphite 3 in hole and make graphite 3 directly touch silica gel 4 between aluminium base 6 and heat-dissipating aluminium plate 7; Then the centre of the bottom surface of the lamp socket 2 of LED lamp pearl 1 is directly contacted with graphite 3, the outer shroud position of the bottom surface of lamp socket 2 is connected with insulating circuit board 5, and the side of lamp socket 2 is coated with the silica gel 4 that is layered on insulating circuit board 5 appearances and surrounds; Namely make the silica gel heat abstractor of the utility model LED fluorescent tube.

During use, the heat major part on lamp socket 2 is conducted to the silica gel 4 between aluminium base 6 and heat-dissipating aluminium plate 7 rapidly by the graphite 3 of bottom surface, then by silica gel 4 conduction, to heat-dissipating aluminium plate 7, distributes rapidly; Simultaneously, separately some silica gel by the lamp socket side 4 distributes rapidly; Utilize like this characteristic that graphite and silica gel easily conduct heat that the heat that LED lamp pearl produces is distributed rapidly by graphite and silica gel, greatly improved radiating efficiency, reduced the temperature of LED lamp pearl, silica gel be coated with the surrounding that is layered on LED lamp pearl and under, can also play moistureproof and dustproof effect, extend the Acceptable life of whole LED lamp pearl.

Claims

1.LED the silica gel heat abstractor of fluorescent tube, comprise aluminium base (6), it is characterized in that between described aluminium base (6) and heat-dissipating aluminium plate (7) being coated with and spread silica gel (4) and used silica gel heat conduction, the another side installing insulating circuit board (5) of aluminium base (6), insulating circuit board (5) appearance also are coated with and have spread one deck silica gel (4); Dig hole on aluminium base (6) and insulating circuit board (5), filled the silica gel (4) between graphite (3) and direct contact aluminium base (6) and heat-dissipating aluminium plate (7) in hole; Then the centre of the bottom surface of the lamp socket (2) of LED lamp pearl (1) is directly contacted with graphite (3), the outer shroud position of the bottom surface of lamp socket (2) is connected with insulating circuit board (5), and the side of lamp socket (2) is coated with the silica gel (4) that is layered on insulating circuit board (5) outer surface and surrounds.