For more information, please visit web:www.heatsinkled.com
MingfaTech - LED thermal solution leading provider
2015年12月31日星期四
Mingfa Tech’s Europe Business visit to help solve the problem of heat dissipation
Mingfa Tech Manufacturing Limited
It goes without saying that professionals, in
any industry, want to understand the market in which they sell, and the people
who are buying their products or services. They want to know what drives
business. So this time Mingfa Tech’s Director of Sales & Operations and
Chief Designer had their
business trip to Europe in the middle of November and early December 2015 in
Europe. They started their trip from Netherlands, then Belgium, Switzerland,
Germany, Italy, Spain, and last station is Greece. Mingfa Tech attaches much
importance to maintain and serve customers, and they had this meaningful
meeting face to face to know what customers really need, and to provide the
first-class service to help solve the problem of heat dissipation.
Actually, this was their first time to visit
many customers for nearly a month, their courage is really appreciated. Use Gaius
Julius Caesar’s word: “I came, I saw, I conquered.” They did a great success. This
visit makes Mingfa Tech and customers more close. Mingfa Tech team had greatly
presented Mingfa Tech’s standard LED Coolers (SimpoLED, EtraLED, GooLED,
HibayLED, BuLED) and indicated that Mingfa Tech can also do customized projects
like die casting, cold forging, aluminum extrusion, etc. What’s more, through
the meetings, Mingfa Tech can know what the customers’ real demands. And the
customers got to know a whole range of Mingfa Tech’s products and services
clearly. They had a deeper understanding of Mingfa Tech and feel confident working
with them.
Unexpected information about suppliers’
product or company always comes out when talking to people in person. They
learn things about people when they look them in the eyes. They gain trust in them,
which increases the trust they have in their own ability to make tough
decisions. Thanks to the compelling trip, they got to meet a lot of great
people and see some cool places!
Mingfa Tech has been focusing on LED thermal
solution since 2009, which was certified by many famous LED cob brands, such as
Xicato, Bridgelux, Lumileds, Luminus, LG Innotek, Seoul Semiconductor, and so
on. Sincerely treat customers and do best to serve customers in thermal
solution is Mingfa Tech’s mission. Mingfa Tech is also looking for distribution
relationships for MingfaTech's LED coolers. To know more details, please contact:
(PS: looking for global distribution)
Contacts:
Tel: +86 0769 33252828
Skype: sales004.mingfa
LED Thermal Design Challenges: Tips and Techniques
The
latest in LED lighting offers high luminous flux, efficiency, CRI, and
reliability, suitable for most lighting applications, including architectural,
accent, HID, and down lighting. LEDs save energy, reduce waste, are free
of mercury and lead, and convert energy to light more efficiently than common
light sources used today.
The majority of LED failures are caused by excessive or long-term high temperature. Elevated junction temperatures can cause a reduction in light output, degradation of chromaticity performance, life expectancy, and reliability. In this article, we will discuss methods to predict the scale of the thermal challenges a design represents, along with ways to ensure the performance of the LED light engine. Included is a review of the basic heat transfer modes, guidelines for heat sink design, the LED thermal model, example calculations, and other considerations that must be taken into account.
There are three basic modes of heat transfer: conduction, convection, and radiation. Conduction is the transfer of heat by direct contact of particles of matter. Metals are generally the best conductors of thermal energy due to a large amount of free-moving electrons that are able to transfer thermal energy rapidly. Air is a poor conductor of heat, and eliminating air gaps between materials, even at the microscopic level, can drastically improve the efficiency of the conduction heat transfer. Using a thin layer of a thermal compound will help improve the conduction heat transfer from the LED to the heat sink. Convection is the transfer of thermal energy by the movement of molecules from one part of the material to another. As the fluid or air motion increases, the convective heat transfer increases. Radiation is the transfer of heat energy through empty space. No medium is necessary, since it is transferred via far infrared electromagnetic waves.
In LED heat sink design, each heat transfer mode plays a role in transferring heat away from the LED junction to the ambient environment. We will focus on the convection mode of heat transfer. In most LED designs, the majority of the heat is transferred from the LED package to the ambient air using convection. A realistic expectation of the air temperature surrounding the device needs to be considered, including the heat generated by the driver source if it is contained in the same space.
The material used should have a high thermal conductivity for best heat transfer. Typically, aluminum is used due to its relatively low cost and good thermal conductivity. Convection transfer takes place at the surface of the heat sink. Therefore, heat sinks should be designed to have a large surface area. More surface area can be obtained by using fins, increasing the size of the heat sink itself, or changing the heat sink’s orientation.
Heat transfer via radiation is greatly affected by the emissivity of the surface material. Emissivity is the ability of a surface to emit energy by radiation. In general, the duller and blacker a material is, the closer its emissivity is to perfect (the number one). The more reflective a material is, typically the lower its emissivity. Painting or anodizing the surface can have a dramatic affect on getting the heat out.
The majority of LED failures are caused by excessive or long-term high temperature. Elevated junction temperatures can cause a reduction in light output, degradation of chromaticity performance, life expectancy, and reliability. In this article, we will discuss methods to predict the scale of the thermal challenges a design represents, along with ways to ensure the performance of the LED light engine. Included is a review of the basic heat transfer modes, guidelines for heat sink design, the LED thermal model, example calculations, and other considerations that must be taken into account.
There are three basic modes of heat transfer: conduction, convection, and radiation. Conduction is the transfer of heat by direct contact of particles of matter. Metals are generally the best conductors of thermal energy due to a large amount of free-moving electrons that are able to transfer thermal energy rapidly. Air is a poor conductor of heat, and eliminating air gaps between materials, even at the microscopic level, can drastically improve the efficiency of the conduction heat transfer. Using a thin layer of a thermal compound will help improve the conduction heat transfer from the LED to the heat sink. Convection is the transfer of thermal energy by the movement of molecules from one part of the material to another. As the fluid or air motion increases, the convective heat transfer increases. Radiation is the transfer of heat energy through empty space. No medium is necessary, since it is transferred via far infrared electromagnetic waves.
In LED heat sink design, each heat transfer mode plays a role in transferring heat away from the LED junction to the ambient environment. We will focus on the convection mode of heat transfer. In most LED designs, the majority of the heat is transferred from the LED package to the ambient air using convection. A realistic expectation of the air temperature surrounding the device needs to be considered, including the heat generated by the driver source if it is contained in the same space.
The material used should have a high thermal conductivity for best heat transfer. Typically, aluminum is used due to its relatively low cost and good thermal conductivity. Convection transfer takes place at the surface of the heat sink. Therefore, heat sinks should be designed to have a large surface area. More surface area can be obtained by using fins, increasing the size of the heat sink itself, or changing the heat sink’s orientation.
Heat transfer via radiation is greatly affected by the emissivity of the surface material. Emissivity is the ability of a surface to emit energy by radiation. In general, the duller and blacker a material is, the closer its emissivity is to perfect (the number one). The more reflective a material is, typically the lower its emissivity. Painting or anodizing the surface can have a dramatic affect on getting the heat out.
In order to meet the led lighting market needs, Mingfatech have
launched MR16 fitting in Oct. 2016 which certified by Xicato. I’d like to
recommend this type to you.
This model can be compatible with more than 20 types of LED COB
brands, suitable for 5W-15W LED COB. Most importantly, it has better
beam-focusing and more aesthetic appearance. So I’d like to recommend to
you. If you want to know more, please
feel free to contact me as below:
Tell:+86-769-33252828
Website: www.heatsinkled.com
2015年12月3日星期四
Discovering More about LED Coolers
Discovering More about LED Coolers
Tube Light Fixtures are an elegant and energy conscious method to provide illumination to a school, hotel, or private family home. All the fixtures are dimmable along with that have an assortment of color temperatures to select from, such as neutral and cool white. Every single light is assured to last for a prolonged period of time with an average lifecycle expectancy of 50,000 hours and has an involuntary five-year warranty. A high CRI works to enrich the brilliance of every single color and create this low-power illumination option as operational as possible. Heat dissipation know-how makes it harmless for kids to touch. Engineers have rationalized this technology to eradicate any buzzing from all these easy to install devices.
LED Tube Lights
Tube Lights offers a stylish way to light up a living or work space. A peripheral driver influences these green illumination options. They enhance an area while being informal on the eye, with the alternative of clear or frosted casings. All tube lights have a usual lifespan of 45,000 hours and generally a warranty of three years. This assurance protects you in contradiction of any faulty merchandises and comes as standard. LED Tube Lights make use of only inert supplies in their building. The lights do not discharge any unsafe gases and there is no mercury or lead existent. It is harmless for children and is totally cool to the touch.LED Wall Lighting
Wall Lighting emanates in a small black box to shield the light and a casing to make sure it is bright but not striking. Select from an assortment of color temperatures from tranquil warm white to intense cool white. It encounters all IP65 necessities and works miracles in a warehouse or outside area. Use them for open-air illumination. They have an assurance of five years along with thousands of hours of illumination time. In addition to that, LED cooler offers LED cooling in best possible way to enhance the life of your LED lightning systems. It is green merchandise as it releases no discharges and only uses maintainable materials. No mercury or lead was castoff in the building of this wall illumination option.Final Words
On the whole, within the last few decades LED lights have increased their market share drastically and in in addition to that they have helped people save a lot of money as they are energy efficient and environment friendly.MingfaTech Manufacturing Limited
Head Office: Suite 901, Block A, Luo Sha Da Sha, Dong Xing Road,
Guan Cheng District, Dong Guan City, Guang Dong Province, 523000 China
Tel: +86-769-33252828
+86-769-33251919
E-mail: sales@mingfatech.com
web：www.heatsinkled.com
Discovering More about LED Thermal Management
Discovering More about LED Thermal Management
The appeal of making use of LEDs in lighting applications is increasing rapidly. The frequent and noteworthy benefits of expending modules that integrate a matrix of LEDs are being documented by design engineers in numerous key industry sectors, counting aerospace, architectural illumination, and the "golden egg" motorized market. Characteristics such as design suppleness, low power intake, even and dependable light and long lifetime discriminate LED modules from designs grounded on traditional monofilament lamps as well as fluorescent tubes. LEDs can even have knock-on reimbursements, such as significantly decreasing the size and intricacy of the component and streamlining the lens design. A good example of some other remunerations of LED lighting is established by a solicitation in the cabin of a passenger airplane. A retrofit LED component that substituted a fluorescent-tube illumination module empowered finely measured dimming and also delivered mood lighting over the use of differently colored LEDs.
Thermal Management
Possibly the most thought-provoking issue when comprehending a module design that makes use of LEDs is to handle the temperature of discrete device junctions in the course of normal operation. If the substantial amount of heat twisted by all the campaigns in a module is not accomplished correctly then the junction infections might reach a level wherein the LEDs' anticipated life is summarized and dependability is compromised. LED modules characteristically comprise of a matrix of many superficial mount devices. These LEDs are fused to an etched copper layer that offers interconnects between the discrete LEDs as well as additional passive and active modules that are necessary to complete the course. The trivial size of the LEDs plus the close immediacy with which they can be straddling means that originators have a enormous amount of design liberty and can attain complex lighting designs with high levels of illumination.The etched copper circuit is disconnected from a vile plate generally made of aluminum by a thermally effectual, LED thermal management and electrically segregating dielectric material. The features and competences of the dielectric coating are significant to the design suppleness and performance of the complete module.
Final Words
LEDs themselves are characteristically long-lasting. Mounting them on metal grounded circuit boards only aids to improve their sturdiness and that of the completed module, offering excellent resistance to tremor and mechanical shock.MingfaTech Manufacturing Limited
Head Office: Suite 901, Block A, Luo Sha Da Sha, Dong Xing Road,
Guan Cheng District, Dong Guan City, Guang Dong Province, 523000 China
Tel: +86-769-33252828
+86-769-33251919
E-mail: sales@mingfatech.com
web：www.heatsinkled.com
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