An arc-shaped building body needs to be installed with LED display screen. Whether the model modules in the design scheme can be assembled to produce a perfect arc effect is related to the radius of the building arc and the shape of the bottom shell of the module.
The LED display can be used as a curved screen or a circular ring screen, because the bottom of the module kit has a draft slope!
As shown in the figure above, if you know the module specifications and draft angle, and the modules are bent at the maximum angle, then the radius of the arc of the last module can be calculated by CAD.
The following are the most common LED display module specifications and common bottom case draft angles (1, 1.5, 2, 3 degrees) on the market and the minimum radius of the arc they can form:
Therefore, if you want to evaluate whether an arc-shaped building can be used as a curved screen, you need to first understand the draft angle of the bottom shell of the LED display module from the manufacturer, and calculate the radius of the arc-shaped building, and then compare the data in the table For comparison, as long as the radius of the arc is greater than the minimum radius, a perfect arc screen or ring screen can be assembled, and if it is smaller than the minimum radius, there will be a gap.
The radius of an arc can be calculated as follows:
1. As shown in the figure above, first pull the wire to measure the chord length b of the arc;
2. Then measure the vertical distance a (string height) from the center point of the string to the top of the arc;
3. According to the Pythagorean theorem: R2 = (Ra) 2+ (b / 2) 2; under conversion, namely:
4. After calculating the radius R, compared with the data in the table above, the radius greater than the minimum radius in the table is suitable for arc screen or ring screen.
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