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LED Bulb QY-D1 Series
  • LED Bulb QY-D1 Series
LED Bulb QY-D1 Series E27
Working Voltage:AC220V Lifetime≥50000h Lamp Holder: E27 Color Temperature: 5500K±500K Light Color: White
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Technical Parameter

Working Voltage:AC220V
Lamp Holder: E27
Color Temperature: 5500K±500K
Light Color: White

The LED lamp is designed as direct one-for-one replacements of traditionally inefficient incandescent, fluorescent and halogen bulbs. With Cree High powered LED's, 400 Lumen output for Cool White (300 Lumens for Warm White) and average life span of 50,000 hrs, this lamp is a great choice for any indoor Light Fixture or in enclosed outdoor fixtures.  And an excellent energy saver for all-night lighting of entryways, hallways or stairs. Warm White, Cool White available. Equivalent to a Traditional 60 Watt bulb.

Long Life: 
Realizing rated LED lamp life is dependent on meeting LED manufacturer’s recommendations for:
- operating temperature
- operating voltage & current
- electrical junction temperature
- thermal dissipation
The luminous efficacy (lumens/watt) of LEDs vary with color. Currently white LEDs are measuring between 20- 60 lm/W. This variance is subject to differences in chromaticity as well as wattage. The U.S. Department of Energy recently released a study that estimates efficacy to be 100 lms/W by 2010. By one estimate, replacing the incandescent traffic signals in the United States alone with LED signals would save nearly 2.5 billion kWh annually. Red traffic lights, for example, pay back their initial investment in 2.5 to 3 years through energy savings. Savings due to reduced maintenance are significant, and can be a leader in cost savings when replacement is difficult or expensive.
Reliability and Lumen Maintenance
Lumen maintenance is the amount of light emitted from a source at any given time relative to the light output when the source was first measured. This is usually expressed as a percentage. If you've ever changed a light bulb and noticed how bright a new bulb is when compared with the older bulb, you're seeing the effects of lumen depreciation. This steady decline over time is known as lumen maintenance (L). The materials inside the bulb will continue to deteriorate until finally the bulb will no longer emit any light. This is known as the bulb's mortality (B). With conventional light sources, the bulb usually fails before our eyes notice the change in lumen maintenance.
LED’s also experience lumen depreciation but it happens over a much longer period of time, usually tens of thousands of hours. Compared to conventional light sources, you notice very little degradation of light with LED’s.
Product Features:
1. Unmatched Price/Performance Ratio
2. Replaces 40 Watt traditional Light bulbs
3. Long Life, over 25,000+ hours
4. Standard A19 form fits any application 
5. Significantly reduces maintenance costs
6. Low wattage consumption
7. Electricity consumption reduced 80-90%
8. Vibration resistant, solid state electronic circuitry
9. Internal TVS surge protection
10. Low heat generation saves HVAC operating costs
11. Warm & Cool White available
12. 120VAC. standard. 240V available (must call)
13. Investment payback within 1 year
14. Non Dimmable
Model           Specification
QY-D1-1  Φ60  30*0.08 W Power: 2.5W
QY-D1-2       Φ60  45*0.08 W Power: 3.5W
QY-D1-3  Φ60  62*0.08 W Power: 5W


Light-Emitting Diodes (LED’s) are solid-state semiconductor devices that convert electrical energy directly into visible light.
The inside of an LED is made up of various semiconductor materials. When an electrical current passes through the diode, the recombination of positive and negative charges within the different compositions results in the emission of photons (light). The selection of different semiconductor materials will affect the frequency (color) of the emitted light. LED’s are direct-current (DC) devices that require a transformer to convert alternating current (AC) to DC. The transformer also maintains a quality electrical supply for the LED device.
Almost all of the energy in an LED radiates within the visible spectrum. By contrast, incandescent light sources have the lowest efficiency of all conventional sources because a major portion of its emitted energy appears in the infra-red (IR) region of the spectrum. Other sources, such as fluorescent and HID lamps have a higher efficiency but still have loss mechanisms in the electrodes and within the discharge itself. Fluorescent lamps have additional losses in the conversion of the UV radiation to visible radiation by the phosphor.
Advantages of using LED technology include:
1. High-levels of brightness and intensity
2. High-efficiency
3. Low-voltage and current requirements
4. Low heat
5. High reliability (resistant to shock and vibration)
6. No UV Rays
7. Can be easily controlled and programmed
Places for Use:
1. Residential Light Fixtures
2. Lobby & Hotel lighting
3. High Ceilings & Chandeliers
4. Signage & Display cases
5. Shopping Malls & Amusement Parks
6. Recessed Cans & Wall Sconces
7. Cabinet/Under Cabinet
8. Step & Cove Lighting
9. Pathway Lighting
10. Splash Lighting
11. Column Lights
12. Signal Lighting

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