Bangalore-based Aditya Agarwal (23) has created a coin-sized micro-USB powered 1.2 watt white LED bulb, called Bulbh, that emits twice the light than a one watt compact fluorescent light (CFL) bulb.
Created and designed at Aditya’s startup My Dream Bird, the Bulbh is a small, slim, micro-USB powered light that has a light emitting capacity of 120-130 lumens as compared to 60 lumens per watt of a CFL and 12-17 lumens per watt of an incandescent lamp. It can be used as an emergency light, a cycle light, night light, in wardrobes, for photography, or as a helmet light.
This September Aditya plans to launch Bulbh in a ‘buy one, donate one’ model where every Bulbh that is sold online, one unit will get donated in India to the communities that are still using incandescent bulbs to reduce their cost of living.
Why it matters
The traditional incandescent yellow light bulbs are much less efficient than other types of electric lighting; they use less than five percent of energy into visible light, converting the rest into heat. Though the manufacturing cost of incandescent bulbs is less, its low light emitting capacity and high power consumption factors have led the European Union, China, Canada and United States to consider phasing it out. India too is slowly moving towards banishing the incandescent bulbs.
As incandescent lamps phase out, light-emitting diodes (LEDs) that are being assembled into a light bulb. Like incandescent lamps, and unlike CFL lamps, LEDs come to full brightness without the need for a warm-up time. They have a lifespan and electrical efficiency that is significantly better than the rest.
The LED lamp market is projected to grow multi-fold over the next decade, to $25 billion by 2023 (see source). Aditya’s Bulbh taps into this emerging market.
Speaking of the micro-USB powered light, he says, “The Bulbh can be powered by any micro-USB chord that can be connected to a power source such as a mobile device adapter, a power bank, a personal computer or a laptop. It has been ergonomically designed for use in various conditions and emits bright light. It is specifically targeted for mobile phone users of the world who already have micro-USB adapters.” This is a large user base. According to a report, the number of mobile phone users in the world is likely to reach almost 5.3 billion by 2017.
To make Bulbh emit light uniformly in all directions, the product has been given a custom casing of silicon and thermoplastic alloy. The casing also prevents Bulbh from heating up, even after 24 hours of continuous use. A tiny circuit of LEDs lies inside the enclosure.
To achieve the color rendering index (CRI) of 80, which is equivalent to any CFL, and twice the lumens per watt than a CFL, Aditya has created Bulbh by using six 0.2 watt Everlight LEDs, each with a capacity of emitting 24 lumens of light. All LEDs have been placed in a series on an aluminum-core printed circuit board that maintains the circuit temperature uniformly.
The circuit comprises a dedicated high-frequency DC-DC converter that operates as a constant-current source. There is provision for high switching frequency that regulates the amount of inrush current and prepares the circuit for a soft start. This also prevents the circuit from over-voltage, short-circuit and over-temperature incidents.
On the outside, each Bulbh is fitted with a neodymium magnetic base so that the users can stick it on any metal surface. Initially, My Dream Bird plans to provide two extra magnetic stickers with the product so users can stick it to metal, stone wall, wood, ceramic or glass.
With its coin-sized smooth form factor, Bulbh looks sleek. The tiny lamp, with a rounded shape similar to that of an Indian sweet called ‘batasha’, is just 0.6 inches in height and 1.3 inches in width, and weighs between 30-35 grams.
Buy One, Donate One
As Bulbh finds its users in the market, Aditya plans to execute his ‘buy one, donate one’ campaign simultaneously. “The idea of donating Bulbh occurred to me when I saw hawkers in Kolkata selling their goods under candle light. I found out that they do not buy incandescent bulbs or CFLs as they get heated up and they cannot afford LED lights. Hence, for each Bulbh that is sold online, I plan to donate one to such communities and users in India,” explains Aditya. Initially, he plans to sell Bulbh through popular e-commerce channels in the U.S. and the European Union countries.
My Dream Bird has collaborated with non-governmental organizations such as Goonj, Smile Foundation, Round Table India, and HelpAge India to ensure donated Bulbh lamps reach hawkers, students, underprivileged children and the elderly communities in India.
Bulbh will be launched in the U.S. and European markets by September 2015. Once he is able to raise $400,000 funding, Aditya plans to open-source the project.
For more details, contact Aditya at email@example.com or visit the Bulbh website.