A COB light is a type of LED light, with COB standing for Chip-On-Board. COB lights are essentially an array of LED chips that are tightly packed together and bonded to a substrate such as silicon carbide. In effect this creates one large LED chip that has excellent uniformity of brightness, thus making it ideal for photographers and filmmakers.
When most people think of LEDs they probably think of the small singular lights that they experimented with at school when learning about electronics. Those types of singular round LEDs are called DIP LEDs, or Dual In-Line Package. They are also the kind of LEDs you might find in a control panel to indicate when a switch is on or off. DIP LEDs are cheap, but they are bulky and not very powerful.
The Godox SL-60 COB light.
Taking a 10mm x 10mm square LED array as an example, you would only fit 9 DIP LEDs on the square. You would fit 342 COB LEDs in the same space, though, so you can instantly see the advantage in a light that is designed for studio photographers or filmmakers. A much brighter light source can be created using a much smaller light.
If the light is to appear in a shot itself, a COB appears as a single light source, where older LED panels that were constructed of hundreds of DIP LEDs all lined up, would often show a zebra pattern, along with far less panel uniformity.
COB lights are also relatively simple in the way that they work, and this created a robust and reliable design. With a large array of older DIP LEDs, each individual LED would have its own circuit to power it. A COB only has a single circuit, with the whole COB panel acting as a single light, despite containing multiple small LED panels.
One of the downsides to a COB light, especially in a studio scenario, is the heat that is generated. With such a huge amount of light energy created in a small area, the heat is very localized and requires passive and active cooling. Passive cooling in COB studio lights is done by huge heatsinks that surround the front-mounted COB panel. You can see it clearly in the photo of the Godox SL-60.
Active cooling if often also necessary, and this means there will be a fan inside the head. In a stills photography studio a fan is a small problem, but they can be an issue for filmmakers if you need to record sound. A single COB light is unlikely to cause problems, but if you had a huge number of them it would become something to be aware of. Also worth noting is that the cheaper the lights you buy, the cheaper and noisier the fans will be.
Luzion recessed COB spot offers effective lighting solution for hotels, convention centers, banquet halls. LED recessed COB spot light with aluminium housing. High quality decorative focus on your prized objects on display. Comes with a til-table feature which you can use to adjust the direction of light and illuminate the area of your choice. Provided with highly efficient integral constant current led driver. Reflector & clear optics to create sharp light beam without glare. Applications : hotels, convention centers, restaurants, banquet halls, showrooms. High lumen output with controlled power. Total Current Harmonics Distortion is < 15% 2 years warranty.
IP20-IP68 can be customized
Apps /Certification Compliant : SAA, CE, ROHS etc Consumer Code : CL66-13w Specification : COB, SMD Watts : 10 13 15 Color : Silver/ White/ Brushed nickel Warranty (Years) : 3 Notes: 1OEM products, plain packaging with C-tick. 2 Minimum One year warranty offered on all products unless otherwise stated. 3 Warranty will be void if goods are not retuned for exchange in satisfactory condition or if due to inappropriate handing 4 Unless otherwise stated products are direct connect, wide voltage rated AC 86 - 265v (TBA on order specs) 5 Price quoted do not include local taxes 6 Products are EMC compliant as a minimum, with certifications from several countries and regions. 7 Order require prepayment 8 Minimum led lifetime 30,000 hrs 9 Allow approximately 4 -6 weeks for delivery. 10 Shipping costs to be advised based on delivery port Disclaimer: Lucent LED Lighting will not be held responsible nor accept liability either directly or through a third party for any wrongful or inaccurate interpretation or use of information supplied. P.S : Commercial, Industrial, Marine, Aviaition and Militry Grade products are available on request basis.
â?¢ High quality Epileds chips , high lumen and par value â?¢ Patent COB + 90áµ? reflector, excellent uniform light and Even light distribution â?¢ Full light spectrum, suitable for all stages for plant growth â?¢ Chip sit-on the aluminum sunflower radiator + UL fans + massive heat sinks, temperature ï¼? 118áµ?F, optimal heat dissipation â?¢ Isolated power drivers, can protect chips, easy and safe to maintain. â?¢ Daisy-chain connection, easy to install lamps together â?¢ On/off switch Specification: COB chip 1 x 66PCS*3W (Epileds, 45mil) Draw power 98W ± 5% Voltage AC 85-265V Spectrum full spectrum PPFD 296 µmol/ (m²·s) @30cm Coverage about 1.49m² @60cm Lighting color Purple red Reflector angle 90° Housing Matrial: Iron; Color: Silver Lifespan 50,000hrs Dimension 180*180*83.5mm Packing info "g.w. /pc: 2.0kg, g.w./ctn: 11kg 4pcs/ctn, ctn size: 62x31x28cm" Box content 1 LED grow light; 1 power cord; 1 stainless steel hanging hook Certificate CE, ROHS, FCC Why should You Choose this Light? 1. Patent reflector cup design(90 degree) 2. High quality Epileds leds, new LED technology innovation 3. Sunflower radiator system, make the temperature at the bottom of the chips is lower than 118.4 . , produce less heat and save energy. UL proved cooling fans, lower noise, wont influence your daily life and rest. 4. Adopts separate On/Off switch, easy to turn on/off lights based on plants requirements, avoiding wasting. 5. Modular light design, if a part is broken, other parts will keep working. Besides, easy to be fixed in case a part is broken, well help to solve any quality problem as soon as possible. 6. UL approved 2 cooling fans, better heat dissipation for this full spectrum grow light. Light won't generate any ultra heat even works 18hrs a day, keep light has longer service life.
Basic info Item:led downlight Trademark:Kaer Factory model:KA-908-30 Diameter: 108mm Height:66mm Cut hole:90mm Ra: 80 Color:White CCT: 3000K/4000K/6000K Power source: AC COB Certification:CE CQC RoHS CCC Origin: China(Mainland) Port: Shunde Body material:Aluminum Lamp source: COB Input voltage: 180-240v Warranty: 2 years Payment: T/T,Western Union Transport Package: Carton Packing Beam angle: 45degree Advantage 1)High energy efficiency, only 10%-15% power consumption compared with incandescent lamp 2)Environment friendly, no UV or IR radiation, no noise 3)High CRI more than 80 4)High luminous efficiency over 70lm/w, energy saving. 5)High power,high quality. High lumen 6)Easily installed,reliable,secure 7)Brief design, fashionable appearance Application 1)Commercial and exhibition area 2)Hotel, conference room 3)Factory, office, house 4)Airport, metro station 5)Places that require high color rendering index
High Quality Windproof, Rainproof, Lightning-Proof Low Consumption 5 Years Warranty Light up the world, the quality is consistent High Life No wiring Material thickening
100W LED COB Bulb Wash Effect par light for Cinema Meeting Audience Features and advantages: 1.Aluminum housing with better thermal dissipation and high quality. 2:Low heat induced and cool temperature reduce airconditioners' work load, and saving electricity bill. 3.Regular designed and easy to install. Name 100W LED COB Bulb Wash Effect par light for Cinema Meeting Audience Model number GA-LP200 Emitting Color WA Life 50000h Input Voltage 110-220V LED Chips CREE Frequency 50-60Hz Power consumption 100W Control Channels  6/10CH Control mode Wireless Controller or DMX512 Controller Lamp Luminous Flux(Lm) 100000 Light body aluminum case Specification 230*230*280 mm Power 100W Warranty 1 Year N.W 3.5kg G.W 4.5kg Quality is priority. GAGA  Light people always Pay more to quality controlling from the very beginning to the very end. Also, we provide 2 years warranty for all our products.
Supplier: Led strip light, cob strip light
Services: Manufacturing
Buyer: Copper, chips
Supplier: LED strip light, COB light, LED tape light
