CN107120540B - Heat dissipation compound oil and LED liquid lamp - Google Patents
Heat dissipation compound oil and LED liquid lamp Download PDFInfo
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- CN107120540B CN107120540B CN201611111073.3A CN201611111073A CN107120540B CN 107120540 B CN107120540 B CN 107120540B CN 201611111073 A CN201611111073 A CN 201611111073A CN 107120540 B CN107120540 B CN 107120540B
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- led
- heat dissipation
- oil
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- lamp
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V29/00—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
- F21V29/50—Cooling arrangements
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V19/00—Fastening of light sources or lamp holders
- F21V19/001—Fastening of light sources or lamp holders the light sources being semiconductors devices, e.g. LEDs
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V29/00—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
- F21V29/85—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems characterised by the material
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
- Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
Abstract
The invention discloses heat dissipation composite oil and an LED liquid lamp, and relates to the technical field of light source illumination. The heat dissipation compound oil is used for dissipating heat of the LED photoelectric module during working. The heat dissipation compound oil comprises: the silicone oil dispersion comprises 90-98% of silicone oil and 2-10% of diffusion powder. According to the heat dissipation composite oil and the LED liquid lamp, the high-power LED photoelectric module for removing power is immersed in the heat dissipation composite oil, so that the convection speed of the upper layer composite heat dissipation oil and the lower layer composite heat dissipation oil is high when the LED photoelectric module 150 works, the generated heat is taken away quickly, and meanwhile, the light diffusivity is good.
Description
Technical Field
The invention relates to the technical field of light source illumination, in particular to heat dissipation composite oil and an LED liquid lamp
Background
When the LED lamp works, 70% -80% of energy is converted into heat, so that junction temperature is increased, and performance is reduced. With the increase of power, the problem caused by heat is more prominent, so that the significance of heat dissipation design on the lighting product is great. The heat dissipation design of the LED indoor lamp with the power not exceeding 10W is mainly in a metal radiator mode and is called as a bulb lamp. The added metal radiator increases the cost of the bulb lamp, so that the price of the bulb lamp is higher than that of the traditional lamp and is difficult to accept by users; and the heat-conducting silicone grease layer between the metal radiator and the aluminum substrate also influences the heat-radiating effect of the lamp.
Aiming at the problems, the liquid heat dissipation LED lamp appears in the market, most of liquid used for heat dissipation is mainly silicone oil, and heat generated by the LED photoelectric module is taken away through the up-down convection of the oil. In the prior art, reference 1(CN103925498A) discloses an LED liquid lamp including: the LED packaging box comprises a shell, a connector, a power supply, a substrate, an LED, a light-transmitting shell and filling liquid, wherein the connector is arranged at the rear end of the shell, the power supply is arranged in the connector, the substrate is arranged in front of the connector, the LED is arranged on the substrate, the light-transmitting shell is arranged in front of the shell, a sealed cavity is formed by the shell, the connector and the light-transmitting shell, and the filling liquid is filled in the cavity. The filling liquid 7 is high transparent silicone oil or heat dissipation oil, so that the heating part is completely immersed in the heat dissipation medium, heat is effectively taken away, and the silicone oil and the heat dissipation oil have good safety and stability.
Furthermore, the comparison documents CN202469593U, CN201382393Y, CN205669688U, CN205669689U, CN205669690U, CN105065983A, CN202328108U, CN201666503U, etc. all mention the provision of heat dissipating oil in LED lamps.
However, the aforementioned documents do not consider that the heat dissipation oil in the LED liquid lamp has thermal expansion when the temperature of the LED lamp rises to cause extreme heating, and the heat dissipation oil has a rapidly increased volume and may prop the LED lamp housing to be damaged, or cause deformation of the internal structure or damage of the element, so that the whole LED liquid lamp is scrapped by a serious person, and the service life of the LED liquid lamp is affected.
Further, the heat dissipating oil of the above-mentioned comparative document has problems such as poor light diffusibility and slow convection velocity of the upper and lower composite heat dissipating oils.
Disclosure of Invention
The invention is based on one or more of the problems, and provides heat dissipation composite oil and an LED liquid lamp, which are used for solving the problems that in the prior art, heat dissipation oil in the LED liquid lamp is poor in light diffusivity, the convection speed of upper and lower layers of composite heat dissipation oil is slow, and the like.
The invention provides heat dissipation composite oil which is used for dissipating heat of an LED photoelectric module during working. The heat dissipation compound oil comprises: the silicone oil and the diffusion powder, wherein the silicone oil accounts for 90% -98%, and the diffusion powder accounts for 2% -10%; the diffusion powder comprises diffusion powder with temperature-sensitive characteristics and an optical diffusion function, and when the temperature of the heat-dissipation composite oil is higher than a preset temperature, the diffusion powder is separated from a magnet arranged on the LED photoelectric module and becomes free fluid; and when the temperature of the heat dissipation composite oil is lower than the preset temperature, the diffusion powder with the temperature-sensitive characteristic recovers the magnetic permeability characteristic and is adsorbed by the magnet on the LED photoelectric module again.
Preferably, the silicone oil accounts for 98% and the diffusion powder accounts for 2%.
Preferably, the diffusion powder includes: polycarbonate, a dispersing agent and dispersing powder containing temperature-sensitive characteristics, wherein the polycarbonate comprises the following components in percentage by weight: 88% -92%, the proportion of the diffusant is as follows: 5% -8%, the proportion of the diffusion powder containing the temperature-sensitive characteristic is as follows: 2 to 4 percent.
Preferably, the proportion of the polycarbonate is 90%, the proportion of the diffusant is 7%, and the proportion of the diffusion powder containing the temperature-sensitive characteristic is 3%.
The invention also provides an LED liquid lamp. The LED liquid lamp includes: LED photovoltaic module, lamp shade, heat dissipation compound oil and thermal expansion pipe, LED photovoltaic module with the heat dissipation compound oil is arranged in the lamp shade, just LED photovoltaic module soaks in the heat dissipation compound oil, the thermal expansion pipe is located the lamp shade top is used for holding the inflation of being heated and flows in the heat dissipation compound oil, wherein, the heat dissipation compound oil be preceding the heat dissipation compound oil.
Preferably, the LED liquid lamp includes: and the LED photoelectric module fixing piece is arranged at the opening above the lampshade and supports the thermal expansion pipe.
Preferably, the LED photovoltaic module securing member includes: the LED photoelectric module comprises a supporting plate, a first fixed connecting piece and a second fixed connecting piece, wherein the supporting plate is erected on an opening above the lampshade and seals the opening above the lampshade, one end of the first fixed connecting piece is connected with a substrate of the LED photoelectric module, and the other end of the first fixed connecting piece is connected with the supporting plate; the second fixed connecting piece and the first fixed connecting piece are arranged in parallel, one end of the second fixed connecting piece is connected with the substrate of the LED photoelectric module, and the other end of the second fixed connecting piece is connected with the supporting plate.
Preferably, the free end of the first fixing member is provided with a first fixing hole, the substrate of the LED photovoltaic module is provided with a first fixing pin, during installation, the first fixing pin is inserted into the first fixing hole, or the substrate of the LED photovoltaic module is provided with a through hole matched with the free end of the first fixing member in size, during installation, the free end of the first fixing member is inserted into the through hole.
Preferably, the thermal expansion pipe spirally rises around the axis of the lampshade to form a plurality of circles with equal radius; one end of the thermal expansion pipe passes through a pipe through hole formed in the supporting plate and enters the lampshade, and the size of the thermal expansion pipe is matched with that of the pipe through hole so as to seal the pipe through hole.
According to the heat dissipation composite oil and the LED liquid lamp, the high-power LED photoelectric module for removing power is immersed in the heat dissipation composite oil, so that the convection speed of the upper layer composite heat dissipation oil and the lower layer composite heat dissipation oil is high when the LED photoelectric module 150 works, the generated heat is taken away quickly, and meanwhile, the light diffusivity is good.
Drawings
Fig. 1 is a schematic structural diagram of an LED liquid lamp using a heat-dissipating compound oil according to a preferred embodiment of the present invention.
Fig. 2 is a schematic structural diagram of an LED liquid lamp according to a preferred embodiment of the invention.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and examples. It should be noted that, if not conflicting, the embodiments of the present invention and the features of the embodiments may be combined with each other within the scope of protection of the present invention.
The invention provides heat dissipation composite oil which is applied to an LED liquid lamp adopting liquid for heat dissipation and is used as a medium for accelerating heat dissipation. The heat dissipation compound oil comprises: silicone oil and diffusion powder, wherein the silicone oil accounts for 90-98% and the diffusion powder accounts for 2-10%. The heat dissipation composite oil has the functions of insulation, heat dissipation and explosion prevention, and also has an optical diffusion effect. The heat dissipation composite oil adopts the diffusion powder with the temperature-sensitive characteristic and the optical diffusion function added into the silicone oil, namely the diffusion powder comprises the diffusion powder with the temperature-sensitive characteristic and the optical diffusion function, the diffusion powder with the temperature-sensitive characteristic is very sensitive to the temperature change of the heat dissipation composite oil, when the temperature of the heat dissipation composite oil is higher than a preset temperature, the diffusion powder with the temperature-sensitive characteristic is separated from a substrate in the LED photoelectric module and becomes free fluid so as to accelerate the convection in the heat dissipation composite oil, and when the temperature is lower than the preset temperature, the diffusion powder with the temperature-sensitive characteristic restores the magnetic permeability and is adsorbed by a magnet on the LED photoelectric module again.
According to the heat dissipation composite oil, the LED photoelectric module (especially the de-electrified high-power LED photoelectric module) is immersed in the heat dissipation composite oil, so that the convection speed of the upper and lower layers of the composite heat dissipation oil is high when the LED photoelectric module 150 works, the generated heat is taken away quickly, and meanwhile, the light diffusivity is good.
In a preferred embodiment, the proportion of the silicone oil is 98%, and the proportion of the dispersing powder is 2%. Further, the diffusion powder includes: PC (polycarbonate), a dispersing agent and dispersing powder containing temperature-sensitive characteristics, wherein the proportion of the polycarbonate is as follows: 88% -92%, the proportion of the diffusant is as follows: 5% -8%, the proportion of the diffusion powder containing the temperature-sensitive characteristic is as follows: 2 to 4 percent. When the temperature is lower than 80 ℃ after the free fluid diffusion powder dissipates heat, the diffusion powder which recovers the magnetic conduction characteristic is attracted to the magnet on the LED photoelectric module again to form accelerated convection with the magnetic fluid characteristic, the heat dissipation speed of the LED photoelectric module is further accelerated, and the magnetic fluid diffusion powder also forms a suspended diffuse-reflection optical diffusion layer during up-and-down convection.
In a preferred embodiment, the proportion of the polycarbonate is 90%, the proportion of the dispersing agent is 7%, and the proportion of the dispersing powder containing the temperature-sensitive characteristic is 3%.
The heat dissipation composite oil has the following functions in the LED liquid lamp:
1. insulating action: the insulating strength of the composite oil for dissipating heat of the LED lamp is much higher than that of air. The LED photoelectric module is immersed in oil, so that the insulating strength can be improved, and the LED photoelectric module can be prevented from being corroded by moisture.
2. Heat dissipation: the heat-dissipating compound oil of the LED lamp has high specific heat and is used as a coolant of the LED photoelectric module. The heat that produces when LED photovoltaic module moves makes the oil that is close to LED photovoltaic module be heated the inflation and rises, through the upper and lower convection current of oil, takes away the heat that LED photovoltaic module produced and gives out, guarantees LED photovoltaic module normal operating.
3. The light-emitting diode LED lamp has an optical diffusion function, and diffusion powder added in a formula of the composite oil for dissipating heat of the LED lamp generates an optical diffusion effect in the oil, so that an LED point light source is changed into a diffuse-reflection surface light source.
4. The up-down convection speed of the heat dissipation composite oil is accelerated, the diffusion powder added in the heat dissipation composite oil formula contains temperature-sensitive material, in the LED photoelectric module, the diffusion powder added in the composite oil formula loses magnetic conductivity at a temperature above 80 ℃ and then is separated from a magnet on the LED photoelectric module to be attracted into free fluid, when the temperature of the free fluid diffusion powder after heat dissipation is lower than 80 ℃, the diffusion powder with the magnetic conductivity is recovered to be attracted onto the magnet by the magnet on the LED photoelectric module again to form accelerated convection with magnetofluid characteristics, the heat dissipation speed of the LED photoelectric module is further accelerated, and the magnetofluid diffusion powder also forms a diffuse reflection optical diffusion layer in a suspension state during up-down convection.
Referring to fig. 1, fig. 1 is a schematic structural diagram of an LED liquid lamp using heat dissipation compound oil according to a preferred embodiment of the invention. As shown in fig. 1, an LED liquid lamp 100 according to a preferred embodiment of the present invention mainly includes: the LED photoelectric module 150 and the heat dissipation compound oil 160 are arranged in the lampshade, and the LED photoelectric module 150 is immersed in the heat dissipation compound oil 160. The thermal expansion pipe 120 is disposed above the lamp cover, and is used for accommodating the heat dissipation compound oil 160 that expands and flows in when heated. The LED optoelectronic module 150 includes a substrate, a plurality of LED lamps 180 disposed on a surface of one side of the substrate, and an LED driving circuit for driving the LED lamps 180. The lampshade comprises a lampshade shell which can be made of aluminum materials. The heat dissipating compound oil 160 is prepared according to the above formula, and the above detailed description is provided. The LED optoelectronic module 150 is a high power light source, and the design power is 50W to 120W.
In one embodiment, the amount of the heat dissipation compound oil is configured according to the power of the LED optoelectronic module 150, so as to achieve the purpose of meeting the heat dissipation requirement and reducing the cost. Through relevant verification, the dosage of the heat dissipation composite oil is more appropriate between 100ml and 200ml for an LED photoelectric module of about 50W; for the LED photoelectric module of about 120W, the dosage of the heat dissipation compound oil is preferably between 400ml and 500 ml.
According to the LED liquid lamp, the LED photoelectric module (especially the de-electrified high-power LED photoelectric module) is immersed in the heat dissipation compound oil, so that the convection speed of the upper and lower layers of compound heat dissipation oil is high when the LED photoelectric module 150 works, the generated heat is taken away quickly, and meanwhile, the LED liquid lamp has good light diffusivity.
Further, the LED liquid lamp 100 includes: and the LED photoelectric module fixing piece is arranged at the opening above the lampshade and supports the thermal expansion tube 120.
Further, LED photovoltaic module mounting includes: the supporting plate 130 is erected on the opening above the lampshade and seals the opening above the lampshade, one end of the first fixing connector 170 is connected with the substrate of the LED photoelectric module 150, and the other end of the first fixing connector is connected with the supporting plate 130.
In one variation, the LED photovoltaic module mount further includes: and a second fixing connector 140 arranged in parallel with the first fixing connector 170, wherein one end of the second fixing connector 140 is connected to the substrate 150 of the LED optoelectronic module, and the other end is connected to the supporting plate 130. The first and second fixing connectors 170 and 140 are integrally formed with the supporting plate 130, respectively.
Furthermore, a first fixing hole is formed in the free end of the first fixing connector 170, a first fixing pin is arranged on the substrate of the LED optoelectronic module 150, and the first fixing pin is inserted into the first fixing hole during installation, or a through hole matched with the size of the free end of the first fixing connector 170 is formed in the substrate of the LED optoelectronic module 150, and the free end of the first fixing connector 170 is inserted into the through hole during installation.
Further, the thermal expansion tube 120 spirals up around the axis of the lamp housing to form a plurality of circles with equal radius, at least two circles, preferably three circles. The thermal expansion tube 120 is made of a material with good thermal conductivity, and is configured to accommodate the heat dissipation composite oil 160 when the heat dissipation composite oil 160 is heated and expanded, and to cool the heat dissipation composite oil 160 in a timely manner by virtue of good heat dissipation. One end of the thermal expansion pipe 120 is a pipe head 110, and the pipe head 110 vertically extends upwards from the upper part of the circle so as to dissipate heat in time.
Furthermore, one end of the thermal expansion tube 120 enters the lamp housing through a tube through hole formed in the support plate 130, and the size of the thermal expansion tube 120 is matched with that of the tube through hole so as to seal the tube through hole.
Referring to fig. 2, fig. 2 is a schematic structural diagram of an LED liquid lamp according to a preferred embodiment of the invention. As shown in fig. 2, the present invention further provides an LED liquid lamp. The LED liquid lamp comprises: a lamp housing 300, a connector 200 for connecting a power supply, and an LED liquid lamp 100 disposed in the lamp housing 300, wherein the LED liquid lamp 100 is the LED liquid lamp 100 described above, please refer to fig. 1 and the related description. In a preferred embodiment, the LED liquid lamp is an integrated liquid heat dissipation high ceiling lamp. In addition, the lamp housing 300 includes a first portion and a second portion, the first portion is cylindrical, the second portion is horn-shaped, and the first portion and the second portion are integrally formed. The lamp housing 300 is made of transparent plastic with good heat conduction, and may also be made of aluminum metal material.
According to the LED liquid lamp comprising the LED liquid lamp, the high-power LED photoelectric module which is de-electrified is immersed in the heat dissipation compound oil, so that heat generated when the LED photoelectric module 150 works is taken away, and the LED liquid lamp has good optical characteristics, and has the advantages of simple integral structure, low cost, stable performance, long service life of LED lamp beads and the like.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes performed by the present specification and drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (9)
1. The utility model provides a compound oil that dispels heat for dispel the heat to LED photovoltaic module during operation, its characterized in that, compound oil that dispels heat includes: the silicone oil and the diffusion powder, wherein the silicone oil accounts for 90% -98%, and the diffusion powder accounts for 2% -10%; the diffusion powder comprises diffusion powder with temperature-sensitive characteristics and an optical diffusion function, and when the temperature of the heat-dissipation composite oil is higher than a preset temperature, the diffusion powder is separated from a magnet arranged on the LED photoelectric module and becomes free fluid; and when the temperature of the heat dissipation composite oil is lower than the preset temperature, the diffusion powder with the temperature-sensitive characteristic recovers the magnetic permeability characteristic and is adsorbed by the magnet on the LED photoelectric module again.
2. The heat-dissipating composite oil according to claim 1, wherein the silicone oil is present in an amount of 98% and the diffusing powder is present in an amount of 2%.
3. The heat-dissipating compound oil according to claim 2, wherein the diffusion powder comprises: polycarbonate, a dispersing agent and dispersing powder containing temperature-sensitive characteristics, wherein the polycarbonate comprises the following components in percentage by weight: 88% -92%, the proportion of the diffusant is as follows: 5% -8%, the proportion of the diffusion powder containing the temperature-sensitive characteristic is as follows: 2 to 4 percent.
4. The heat-dissipating composite oil according to claim 3, wherein the proportion of the polycarbonate is 90%, the proportion of the diffusing agent is 7%, and the proportion of the diffusion powder having a temperature-sensitive property is 3%.
5. An LED liquid lamp, comprising: the LED photoelectric module and the heat dissipation compound oil are arranged in the lampshade, the LED photoelectric module is immersed in the heat dissipation compound oil, the heat dissipation compound oil is arranged above the lampshade and used for containing the heat dissipation compound oil which expands when heated and flows in, and the heat dissipation compound oil is the heat dissipation compound oil in any one of claims 1 to 4.
6. The LED liquid lamp of claim 5, wherein the LED liquid lamp comprises: and the LED photoelectric module fixing piece is arranged at the opening above the lampshade and supports the thermal expansion pipe.
7. The LED liquid lamp of claim 6 wherein the LED optoelectronic module mount comprises: the LED photoelectric module comprises a supporting plate, a first fixed connecting piece and a second fixed connecting piece, wherein the supporting plate is erected on an opening above the lampshade and seals the opening above the lampshade, one end of the first fixed connecting piece is connected with a substrate of the LED photoelectric module, and the other end of the first fixed connecting piece is connected with the supporting plate; the second fixed connecting piece and the first fixed connecting piece are arranged in parallel, one end of the second fixed connecting piece is connected with the substrate of the LED photoelectric module, and the other end of the second fixed connecting piece is connected with the supporting plate.
8. The LED liquid lamp as claimed in claim 7, wherein the free end of the first fixing member is provided with a first fixing hole, the substrate of the LED optoelectronic module is provided with a first fixing pin, the first fixing pin is inserted into the first fixing hole during installation, or the substrate of the LED optoelectronic module is provided with a through hole with a size matched with the size of the free end of the first fixing member, and the free end of the first fixing member is inserted into the through hole during installation.
9. The LED liquid lamp of claim 8, wherein said thermal expansion tube spirals up around the axis of said lamp housing forming a plurality of circles of equal radius; one end of the thermal expansion pipe passes through a pipe through hole formed in the supporting plate and enters the lampshade, and the size of the thermal expansion pipe is matched with that of the pipe through hole so as to seal the pipe through hole.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611111073.3A CN107120540B (en) | 2016-12-02 | 2016-12-02 | Heat dissipation compound oil and LED liquid lamp |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611111073.3A CN107120540B (en) | 2016-12-02 | 2016-12-02 | Heat dissipation compound oil and LED liquid lamp |
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| CN107120540A CN107120540A (en) | 2017-09-01 |
| CN107120540B true CN107120540B (en) | 2019-12-27 |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201526931U (en) * | 2009-11-04 | 2010-07-14 | 吴育林 | Heat radiation structure applied to LED light fixture |
| CN202452141U (en) * | 2011-09-19 | 2012-09-26 | 贵州光浦森光电有限公司 | LED luminous lighting device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2148001A1 (en) * | 1992-10-30 | 1994-05-11 | Keith D. Weiss | Magnetorheological materials utilizing surface-modified particles |
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- 2016-12-02 CN CN201611111073.3A patent/CN107120540B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201526931U (en) * | 2009-11-04 | 2010-07-14 | 吴育林 | Heat radiation structure applied to LED light fixture |
| CN202452141U (en) * | 2011-09-19 | 2012-09-26 | 贵州光浦森光电有限公司 | LED luminous lighting device |
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| CN107120540A (en) | 2017-09-01 |
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