In terms of shape, the current LED lampshade includes bulb (opalescent bubble and transparent bubble), candle bubble (like candle flame shape), and flat plate (direct cover plate in front of lamp cap). When the main part of the lamp body (lamp cap) is completed, you can add any kind of foam (for mass production, it is directly bonded with silicone adhesive).
So, do you understand after speaking? In fact, whether you are fat or thin has little to do with functionality (except for some special purpose lamps, such as spotlights -->Special-purpose light sources, unlike general light sources, have a small angle of illumination, which is important for achieving focused lighting. General light sources are designed for illuminating a large area, whereas special-purpose light sources are intended for targeted illumination. These lights are utilized in a variety of applications such as surgical procedures, photography, and machine vision.
For example: a bulb lamp or a cube lamp, which one do you choose? Of course, it's bulb. At present, the market is in the process of LED rapidly replacing CFL. The manufacturer must make products with high recognition (and technology is readily available and low cost). To some extent, the new design of the whole product, from the appearance to the interior, will lose a certain amount of market.
In the later stages of development, when the market becomes saturated, the once overlooked feature can actually become a point of attraction and growth.
However, when it comes to angle, it should not exist. First of all, the light source of LED generally presents a hemispherical light angle. As long as the bubble does not have a light blocking point, it is still a hemispherical light angle. Spotlight downlight reduces its light angle to achieve contrast local strong light.
Summary: awareness, efficient productivity.