How big is it? Know how to choose TV size in a minute

The living room area of my home is about 15 square meters, and the viewing distance is about 3 meters. Even if the internal space has not changed, the size of my TV has increased from 25 inches to 65 inches in ten years. Therefore, with the passage of time and the continuous development of display technology, there is no fixed standard for the size of TV.

It's hard to see clearly when buying a small TV set, and it hurts your eyes when buying a large one. Obviously, the problem of how big a TV set is is still very difficult for many friends. In theory, a TV with a larger screen size can bring more visual impact and immersion, but that does not mean that a TV with a larger screen size is more suitable for every user. If you are struggling about how big a TV should be bought at home, this article will certainly help you.

The bigger the TV, the better

First, let's talk about the size of TV. For the current families, there are houses ranging from 40 square meters to 400 square meters. The TV display is not limited to the living room. Based on the comprehensive entertainment sense of most Chinese families for TV, the living room will still be the first choice for most people. The width of the living room starts from 1.5 meters to at least 8 meters for luxury villas. Do we need to choose according to the distance between the TV set and the human eye.

Due to the structure of the human eye, we can only see about 150 degrees horizontally and 140 degrees vertically in front of us, so we can watch TV clearly when we are 40 degrees above and below, and 60 degrees around. According to the current TV, LCD TV They are all designed at 16:9. If you sit close to the wide screen, it will be distorted in the left and right visual range, resulting in the viewing effect can not be optimized.

In many evaluation processes, we also have a more rigorous comparison of TV viewing distance. Although small size TVs are becoming less and less, there are still some small room users in use. Among 40 inch TVs, the appropriate viewing distance is about 1.0 meters. After all, the resolution of small size TVs can reach at least 1080P, You can see clearly at close range.

No matter how large the size of the TV, there is a reasonable viewing distance. If the screen size is too large and the viewing distance is too short, it is likely that there is not enough visual space to cause picture deformity and to see all the pictures, which may also cause harm to the human eyes. Therefore, the choice of TV size must not be sloppy.

Collect this set of calculation formula quickly

Maximum TV size (inches)=viewing distance (cm) ÷ 3.736
Minimum TV size (inches)=viewing distance (cm) ÷ 6.227

Why can it be accurate to three decimal places? We can know why we can draw such a conclusion in the following calculation process.

First, TV size refers to the length of the diagonal of the TV screen, in inches (1 inch=2.54 cm). At present, the standard screen ratio of most LCD TVs has become 16:9. According to Pythagorean theorem, the length of diagonal is √ 337 (root sign 337). The ratio of screen height to diagonal is 9 ÷√ 337.

Generally speaking, the actual viewing distance is about twice the screen width in the industry. At 3 times, I feel good on the spot. If I watch it less than this distance, I will be tired, while watching it at 5 times away has no impact.

Set the minimum size as A (inch), the maximum size as B (inch), and the viewing distance as L (cm). Now, we can establish such an equation.

2.54A×(9÷√337)×5＝L
2.54B×(9÷√337)×3＝L
We can get:
A=L÷6.226
B=L÷3.736

Therefore, taking the distance between the sofa in the living room of the mainstream family and the TV set as an example, it can be calculated that the size range of the TV set is 48-85 inches. The distance calculated by this formula is the best distance between the human eye and the screen, and within this range is the most comfortable viewing distance for the human eye.

From the current overall sales of TVs, 43 inch, 55 inch and 65 inch TVs are popular, and large size products over 70 inch are becoming a trend. Among them, about 43 inches are suitable for bedrooms, and 65 inches is the largest size segment currently sold, because it can fit most mainstream living rooms. Therefore, before you buy a TV, you may want to think about where to place the TV, and then see how large the space of the house is suitable for.

Finally, for those who choose to hang the TV on the wall, it is better to choose a larger size. First, the bigger the TV is, the better you will watch it. In addition, the number of televisions on the wall will be "less than half".

Finally, I recommend some popular large screen TVs, which are the top products in the hot sales list, and the partners in need can close their eyes.

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