What is a LED Corn Bulb?
An LED corn bulb, or corn cob lamp, is covered in yellow LED diodes arranged around a metal structure. When displayed, corn bulbs resemble a corn cob with bright kernels. A single corn bulb can surpass the lumen counts of standard metal halides at much lower wattages. For this reason, corn lights work perfectly in outdoor and industrial retrofit locations.
Corn lights function as highly efficient solutions to costly electricity bills, offering maximum output with less waste. For this reason, corn lights work perfectly in outdoor and industrial retrofit locations.
These bulbs work in multiple applications and feature a few different screw bases:
- E17
- E26/E27
- E39/E40
- G24
- GU24
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Why should I use LED corn bulbs?
Corn cob lights fit a wide range of applications, replacing high-pressure sodium, compact fluorescent, and metal halide lamps. Best of all, led corn bulbs bypass the ballast for a quick and easy installation in existing light fixtures. This means you can install the lamp without replacing the entire fixture.
Overall, LED bulbs are highly efficient and provide high rates of heat dissipation when in use. Traditional lights have shorter lifespans and higher rates of energy waste. Heat buildup wastes energy, increases room temperature, and shortens the lifespan of the driver and fixture.
Corn bulbs use a plastic cover to protect both the driver and led lights from bugs, dust, weather, and heat damage.
Advantages of LED corn lamps include:
- High Brightness: Arrangement of LED diodes push out high amounts of lighting instantly
- Omnidirectional light: 360-degree lighting, useful in indoor and outdoor areas
- Longer lifespan: Can generally last up to 5x longer than equivalent HID and CFL lamps
- Simple Installation: Screw in installation means a new light is just one quick twist away!
How to Use LED Corn Bulbs
Corn bulbs can easily retrofit in common light fixtures. Corn bulb lighting replacements retrofit in the following common fixture types:
High Bay Lighting These lights install on ceilings between 20 to 45 feet high. High bay corn bulbs give off 10,000 lumens or more. They use beam angles of 60, 90, or 120, which helps the lamp create a focused beam with a high lux level.
These lights install on ceilings lower than 20 feet high. They give off a lumen count less than 10,000. A low-bay corn bulb uses a beam angle of 120, which spreads the light to maintain the desired level.
Known for their “cobra head” or “shoebox” design, these lights install in outdoor areas illuminating highways, streets, parking areas and more.
Outdoor lights install in a broad area such as parks and playing fields. The high lux and lumens output make this type of lighting perfect for sporting events.
Shop lights install in workshops or mechanic shops to provide light for specific tasks. These lights also supplement natural or overhead light.
Typically found along walkways and parks, these lights rest at the top of a pole of some sort.
Where can I use Corn bulbs?
The versatility of corn LED bulbs, along with their energy efficiency and long lifespan, makes them suitable for a wide range of lighting applications. The most common LED corn lamp applications include:
- Retail & Commercial: Corn cob LED bulbs are a great in retail spaces as cost-effective lighting with good lumen output. Their easy installation and high-performance means you get more for less (more light, less replacements).
- Industrial / Warehouse Lighting: Lower both your operating and maintenance costs with easy to replace corn LEDs. The high brightness and wide distribution of corn lights is perfect for warehouses, factories, processing plants, and other large indoor spaces.
- Post Top Lighting: Commonly seen in parks, public spaces, and residential neighborhoods, corn cob lamps in post top fixtures offer aesthetically pleasing and efficient lighting for outdoor areas.
- Street Lighting: The 360-degree light distribution of corn cob LED lights works in highway and street lighting applications where light coverage is paramount.
- Walkway Lighting: Using a corn cob lamp's omnidirectional light on pathways and walkways improves visibility and curb appeal. Additionally, their aluminum casing protects against bugs, dust, and climate changes.
- Security Lighting: Replace worn wall packs, shoebox, and flood lights with corn LEDs to illuminate dark alleys, parking lots, residences, and building exteriors.
- Garage Lighting: For residential and commercial garages, LED corn bulbs retrofit easily into existing fixtures, while offering extra-protection from dust, bugs, and debris. Use corn lamps in open or enclosed fixtures, for low-maintenance garage lighting.
What type of light do Corn Bulbs emit?
LED corn lamps emit white light evenly from the small LED chips patterned around the fixture. Corn bulbs can come in color temperature ranges from 2700K all the way to 6500K to meet any needs.
Corn lights can emit a near daylight white light or a cozy yellowish light. Whether you need a cozy, yellowish light for a home or a bright daylight light for a stadium, corn bulbs have you covered.
The Life Span of a Corn Led Bulb
Corn lights use extensive lighting technology that eliminates energy wasting and helps users to save money. Generally, good-quality LED corn light bulbs are designed to last anywhere from 25,000 to 50,000 hours.
Unlike traditional incandescent or fluorescent light bulbs, LED bulbs produce very little heat making them more energy efficient. This efficiency is a main contributor to their extensive lifespan and reduced energy consumption.
What wattage and lumen count do I need?
LED bulbs offer the same brightness as metal halide or high-pressure sodium bulbs at a much lower wattage. Lumen refer to the brightness of the bulb, while wattage refers to the energy the bulb uses. When replacing metal halide lamps, look at the lumen outputs:
| Metal Halide Wattage | LED Corn Bulb Equivalent |
| 400W | 12,000-18,000 |
| 250W | 9,000-12,000 |
| 150-175W | 7,000-9,600 |
| 75-125W | 4,000-8,000 |
Switching to LED lowers your wattage, and therefore, your energy bill, without lowering the brightness.
Additionally, LED corn lamps come in a wide range of color temperatures suited to different situations.
- 3000K: Warm white color, best for living rooms, kitchens, and bedrooms
- 4000K: Natural white light, best for offices and overhead lights
- 5000K: Cool daylight, best for basements and garages
While LED corn lights come in all these options, the majority go in the 5000K range due to their industrial or outdoor location.
How to install the LED corn bulb?
Transversely Mounted
Installing LED corn bulbs transversely mounted refers to installing the bulb horizontally or sideways within a fixture. This method is commonly seen in fixtures that are compatible with directional features. Before you begin, ensure you’ve turned off the power to the fixture. This is a critical safety step to prevent electrical accidents during installation. Next, if the fixture has any covers, panels or shades, remove them to access the bulb socket. This will allow you to insert the LED bulb properly. Hold the LED bulb horizontally and insert it into the socket to ensure that the bulb aligns correctly with socket pins.
Vertically Downward
Installing LED corn bulbs vertically downward will ensure that light illumination is even and uniform which can be pivotal in spaces where consistent light coverage is essential. Installing an LED vertically downward is a straightforward process and the following steps will explain how you can. You should turn off the power supply to the fixture to ensure your safety during the installation process. Accessing the fixture is the next pivotal step because it allows you to remove or replace preexistent bulbs so that the new LED can be inserted. Now inserting and securing the light to ensure that the new bulb is ready to produce light is a priority. Lastly turn on the power to test the LED bulb to ensure that it’s working as expected.
Vertically Upward
Installing LED corn bulbs vertically upward requires careful consideration to ensure proper illumination and safety. You should firstly check for upward installation compatibility and if it has been rated to ensure a healthy range of installation practices. Some other pivotal steps that will optimize a healthy installation are as follows: consider turning off the power to prevent electrical hazards, access the fixture where you intend to install the lamp or bulbs. Secure the bulb using the securing mechanisms that the fixture should provide to prevent the bulb from falling out due to vibration or movement. Replace any removed covers from the bulb, lamp or mogul bases.
Keep in mind that if you mount the bulb horizontally, you might need a wire to support the bulb, due to the weight of the bulb.
The corn bulb may sport a funny name, but the benefits are far from a joke. With the LED corn bulb, you get an energy efficient, low maintenance product, with longevity. You can also see a return on your investment in as little as 12 months. If you’re considering a purchase, visit HomElectrical.com where we have the most competitive prices on LED corn bulbs. Please, leave a comment if you have any questions or are still confused. No matter the project, we have the solution.
Recommended Reading
Corn bulbs allow you to retrofit your existing light fixtures with LED lights. They screw directly into the fixture, so you see instant results.
LED corn bulbs allow you to convert your post light fixtures without changing the aesthetics. Corn bulbs see use in many applications such as area lighting, street lighting, and high bay lighting, and screw directly into the fixture.
Lumens measures the amount of visible light a source gives off or the brightness of the bulb. Watts measures the amount of energy consumed.
LED high bay lights are some of the best lighting options for commercial spaces because of their high quality, bright illumination. Some of the most common types of high bay lights include UFO lights, linear lights, and vapor tight fixtures.
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