Why measurements are important ? The obvious reason is to determine the size of the frame but the important reason is to make sure that the frame is hidden behind the back of the TV.

LEDStrip lights

Stay tuned for more posts on LED heat sinks and choosing the right one, but this should get you started in setting up your LED system!

Heat sinks are an important part of LED lighting because they provide the path for heat to travel from the LED light source to outside elements. Heat sinks are able to dissipate power in three ways: conduction (heat transfer from a solid to a solid), convection (heat transfer from a solid to a moving fluid, air in most cases), or radiation (heat transfer from two bodies at different temperatures through thermal radiation).

The surface of your heat sink actually has a direct effect on thermal conductivity as well. A painted surface will actually work better than a bright, unpainted one. This also is the same for anodizing and etching heat sinks which will decrease the thermal resistance and make for an overall better heat sink.

So here is the Idea finally revealed, we want to create a frame of plastic casing which has LED strip lights glued. And which can be easily placed behind the TV supported by LED mount thus leaving the TV untouched.

If you are wondering what makes this DIY backlight instructable so special when there are already so many available, read on :).

The plastic casings were just thick enough to accommodate two LED strips in parallel, so I decided to stick LED till it finishes . And for that I started sticking LED strip on the side leaving enough gap to have another strip in parallel.

I did not want to cut the LED strip to match the frame size, but if you want that, you can measure the LED strip size and cut it from the next separator indicator (4 copper dots with scissor mark on the strip after every 3 LEDs usually, you can't cut LED strip from anywhere but these marks)

Heat sinkmanufacturers

Plastic casing are usually not very strong, they become loose if not secured properly. therefore I decided to glue the L shaped connectors with the Casing to ensure they are secured nicely and don't get loose. I applied glue as per instructions on the glue packing. (I did not use E6000 here) . They were:

These days everyone has a TV , to be precise an LED, LCD or Plasma TV. So why need a TV backlight? A simple answer is to reduce strain on eyes and add a great ambient to your TV room. So a backlight is both functional and also has aesthetic value.

So there you have it, now you should know why you need an LED heat sink. When choosing your heat sink and finding which heat sink to use, remember to take into account all the factors that contribute to heat and the cooling process:

The most important part of LED cooling is the thermal path from the LED junction to the outside of the light fixture. Heat needs to be conducted away from the LED in an efficient manner, and then removed from the area by some sort of cooling or dissipation.

Heatsinks for electronics

Before diving into heat sinks you must know that when you purchase LEDs on our metal core printed circuit board LED stars this is already taking a good step to better thermal control. LEDs come in reels as bare emitters that are encapsulated in a transparent resin, which tends to be a poor thermal conductor, so when we mount them on an aluminum base it acts as a heat spreader and is an integral part of the circuit board that aids in thermal conductivity.

When you get LED Strip, Adapter and Electrical wire, you them separately. To light up your LED Strip, you have to connect them together which is very easy.

As I said previously, for larger LED arrays or lights that are in an enclosure where their isn’t much air flow you might want to consider some sort of ventilation system. This will help as the air surrounding your heat sink will in turn be cooler and allow for better thermal transfer from the heat sink surface to outside. Our MakersLED heat sink kits come with a fan included.

What else? Pour a glass of wine or a cup of herbal tea and enjoy your favorite TV show or movie in this amazing ambience :)

Now in mounting our star boards to the heat sinks it is best to use a thermally conductive material to further take steps in optimal thermal performance. We recommend this Arctic Silver epoxy, it’s what we use here in the craft shop when we build all the LED kits we offer. We also have a very quick option in our HexaTherm Tape which is essentially just thermally conductive double sided tape in the exact shape of our LED star boards. The HexaTherm isn’t as thermally conductive as the epoxy but it will still do the trick. LEDSupply offers HexaTherm in 1-up and 3-up Star board tape sizes.

Led lightstrip 24v

The ambient temperature and the drive current both affect the junction temperature of LEDs. Other influences are the nature of the light, whether it is steady state or pulsed, and then the one we are really interested in, LED wattage per unit area of heat sink (surface that dissipates heat).

IR radiation is what actually heats incandescent bulbs and other light sources, making them hot to the touch. Without IR radiation, LEDs are able to be placed in spots where the heat from other sources would cause a problem (grow lights, reef tank lights, illuminating food, etc.).

WelcometoDIY Cheap LED TV Backlight - A Layman's Version and let me tell you how I transformed my TV to a backlighted TV

LEDheatsink housing

Although LEDs are cool to the touch, within the devices themselves, there is plenty of unwanted heat. This heat comes from the inefficiency of the semiconductors that generate the light. The radiant efficiency (total optical output power divided by total electrical input power) of LEDs is typically between 5 and 40%, meaning that 60-95% of the input power is lost as heat. So what do you do with all this excess internal heat?!

As the junction temperature of an LED increases, both the forward voltage and the lumen output decreases (see Picture 1). Not only is this decreasing the brightness and efficiency of your LED but this junction temperature affects the overall lifetime of the LED as well. LEDs don’t usually fail catastrophically (although some may, especially if you over heat them); instead, the lumen output of the LED will decrease over time. Higher junction temperatures lead to faster LED deterioration. This is why it is crucial to keep your LED junction temperature low. Also take note that if you are over driving your LED (putting more current to it than what it is rated) this will drive temperatures up so high that permanent damage can occur.

I think that's enough, so if you agree even to some points in my list I would suggest you read on and I assure you wont be disappointed :)

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The thermal transfer takes place at the surface of the heat sink. That is why the best heat sinks have a large surface area. This can be achieved by straight up increasing the size of the heat sink, or by the use of fins. Finned heat sinks help as they provide many more surfaces for heat to transfer from. Whereas fins help, there still needs to be enough space in between fins for air to move through to generate a difference in temperature between the fins and the air. When fins are made too close together, the air in between wouldn’t cool and would become almost the same temperature as the fins which would stop thermal transfer all together. So more fins doesn’t automatically mean better cooling, you need well spaced fins.

Heat sinkforLEDstrip

The thermal conductivity of the heat sink material directly affects how efficiently the heat dissipates through conduction. Copper is the best but because of its price point, aluminum is used more widely and is what the majority of the heat sinks we offer here at LEDSupply are. Thermoplastics, like our composite LED heat sink, can be used for smaller LEDs with lower heat dissipation requirements. The use of thermoplastics can be very useful as they can be molded in more shapes and are much more light weight.

Therefore I will create a frame that can rest on the mount. Which means I can create a rectangular frame which is 3.5 inch lesser than TV dimensions: That is

BUT... When we attach the L shaped connectors, it will add additional 1 inch to width of the frame on both sides thus making it 22 inches

A frequently listed advantage of LEDs is that they do not produce heat. In a way, this is true, LEDs are cool to the touch because they usually do not produce heat in the form of infrared (IR) radiation. This obviously doesn’t go for IR specific LEDs.

Marketing and technology enthusiast helping pave the way to a more energy-efficient society. Living in the beautiful state of Vermont and working for a company like LEDSupply that is helping provide LED products to save on energy is a great place to be to accomplish this. Always exploring and staying active outdoors while keeping a close eye on different trends and new technologies that could change the world for the better.

With high-power LEDs, it is crucial that you remove heat through efficient thermal management. Without good heat sinking, the junction (internal) temperature of the LED rises, causing the LED characteristics to change for the bad.

For the same reason I wanted one for my TV. While looking for a TV backlight I did some research and concluded these points, which later became motivation for this DIY version.

Thank you for your time to read this ible. I hope you have enjoyed it as much as I did while making it. Please do share your thoughts, feedback and suggestions in the comments below.