Why are LED bulbs currently on the market “fat”?

I think the answer to this question is to understand one thing first, why there are fluorescent lights and Led lights. It was simple, because Edison’s incandescent lamp consumed too much electricity and had a short life span. So those who wanted to make the world peace invented fluorescent lights, and then in recent years led lights.

Incandescent lamp to what extent are inefficient, using a digital contrast you can see: photosynthetic efficiency (lumens per watt, lm/w) : simply means per watt of power to the intensity of light (the following data for the standard requirements, may have come in and go out, can’t remember) incandescent lamp: 10 lm/w fluorescent lamp: 65 lm/wLED lamp: 60 lm/w quality good incandescent lamp: 15LM/W fluorescent lamp: 100LM/wLED lamp: 100LM/W poor also quite a lot, so fluorescent lamp is also called energy-saving lamp. The biggest advantages of LEDS compared with fluorescent lamps are longevity and environmental protection, as well as small size. Here will someone say, ah, wrong ah, the subject is not said LED fat yao? So next, let’s look at the internal structure of LED lights. That makes it smaller than the fluorescent lamp next to it. Why make leds so big? The target market of LED bulbs is to replace traditional incandescent lamps, so the size is made according to incandescent lamps. There are standards for this size. Let’s take a look at the dimensions of incandescent lamps: GB/T 7249-2008 Maximum external dimensions of incandescent lamps the figure above is the size requirements of incandescent lamps below 100W. Therefore, LED designers would like to make LED lamps and incandescent lamp similar appearance. Why do you want to make leds the same size as incandescent bulbs and you can take a look at what they’re used for. Is it all on a shelf ah, the shelf on the table is called a lamp, embedded in the ceiling is called a down lamp, dropped in the air is called a chandelier.

These shelves usually have their own function, lighting up a specific area, lighting up a specific direction, these shelves + bulbs have a new name: lamps. Lamps are designed with functionality and purpose, and in the era of incandescent lamps, incandescent lamps are designed as the standard light source. As a new light source, LED has a characteristic that its luminescence itself has directionality (180 degrees, 50% light intensity range is 120 degrees), while incandescent lamp and fluorescent lamp are 360 degrees. Therefore, the glass cover of the LED bulb is not only for protection but also for reflection. It reflects certain light to make its luminous Angle as close as possible to 360 degrees, so that the lamp can still fully play its function after the LED lamp is installed into the lamp. Are LED lights “thin”? Yes, for example, philipslimstyle has anything to do with cooling? Yes, but not much. In the early stage of LED lamp, a large radiator was needed to solve the LED heat problem, but now for the bulb lamp, heat dissipation is not a big problem, so it can be seen that the small base part of the glass cover can meet the LED heat dissipation effect. Of course, for high-power LED lights, large radiator or very necessary.

I just came out from a large LED agent in China, mainly for IKEA. In terms of shape, the current LED lampshades include bulb (milky bubble and transparent bubble), candle bubble (candle flame shape) and flat plate (direct cover plate in front of lamp cap). When the main part of the lamp body (the cap) is finished, you can add any foam you want (it’s all glued directly with silicone for mass production). So, do you understand after that? In fact, fat or thin and functional is not much to do with (in addition to some special uses of the lamp, such as spotlights -> light source irradiation range is generally large Angle, special uses are to forget the direction of small Angle). For example: a bulb lamp or cube lamp, which do you choose? Balls, of course. At present, the market is in the rapid replacement of CFL LED process, we began to enclosure money. Manufacturers are not silly affirmation is to do recognition of large products (and technology ready-made, low cost). I’m going to have to redesign the entire product from the outside to the inside for your unique hobby, and by the time I satisfy your niche needs, the market will be gone. However, it will become an attractive point and a growth point when the market is saturated in the later stage. (Like neon neon lights that are full of ambiguities all over the country.) But there is no such thing as perspective. First of all, the light source of LED generally presents a hemispherical light Angle. As long as there is no blocking spot in the bubble, it is still a hemispherical light Angle. Downlights reduce their light Angle to achieve a comparative local strong light.

Conclusion: Recognition, high productivity.

Led lamp beads, most of them are single guide light! For this reason, it is decided that the bulb lamp shade will be circular design (because to improve the luminous Angle ah, the larger the ball surface area of the luminous Angle will be larger), but the main problem is to remove the spherical lamp shade will find that the inside is empty! In fact, there are LED lamps (E27) which are exactly the same as 2U ENERGY-SAVING lamps in appearance, but their shape design determines that their luminous efficiency is not as good as that of bulb lamps, so they cannot be popularized by D. So make it “fat”, not because the technology can not be done, just for better appearance (at least I think the bulb is better than CFLS), and higher light parameters. Add: there are netizens said to heat the problem, in fact, see the main figure will know that kind of bulb lamp was not in heat dissipation efforts. Considering that the LED bulb lamps that most Chinese families are currently exposed to are basically of this grade (resistor and capacitance step-down, wave fiber board, 2835). Even if the light is faded, you may not be able to find, even with a lamp, the biggest change, a few dollars of things). So I don’t think this topic is about heat dissipation.

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