END YEAR SHOW PROJECT

21/3/13

To day I continued my work from yesterday. Today I will make my concept sketch in Adobe Illustrator and try to add color on it.I started my concept sketch in illustrator with my sketchbook drawings. Illustrator is for vector creation but i like to use it for this concept design.

This is the final sketching that I finished in illustrator.I ask to every one in my class for opinion every one like the design including Neil.In this image I explains How my design will work as a street light. I added solar panel on the top of the wings so this way it is easy to reach sunlight on this solar panels also this is the main source of energy for this street light design but i think it is safe to connect with normal power source's.This solar powered street light will have LED lights for reducing the amount of energy. This LED light will last 10 times longer than normal bulb also less cost for maintenance  

Advantages 

Low power consumption and long and predictable lifetime: The lifetime of LED street lights is usually 10 to 15 years, three times the life of current technologies adopted. The much less frequent need to service or replace LEDs means low maintenance cost.

• Dimming: LEDs can be dimmed when less street lighting is needed, such as late at night, and at dusk or early dawn.
• Small package size and weight
• More accurate color rendering: The color rendering index is the ability of a light source to correctly reproduce the colors of the objects in comparison to an ideal light source.
• Quick turn on and off: Unlike fluorescent lamps, which take time to heat up once switched on, LEDs come on with full brightness instantly. Unlike mercury vapor, metal halide and sodium vapor lamps (commonly used in street lighting), LEDs do not have a problem restarting immediately (hot ignition) following a brief power failure or inadvertent turn off.
• RoHS compliance: LEDs don't contain mercury or lead, and don't release poisonous gases if damaged.
• Less attractive to nocturnal insects: Nocturnal insects are attracted to ultraviolet, blue and green light emitted by conventional light sources.
• Fewer electrical losses: All other types of lighting (except incandescent) require ballasts, additional electronic and/or electromagnetic components, in which some power is consumed.
• Optically efficient lighting equipment: Other types of street lights use a reflector to capture the light emitted upwards from the lamp. Even under the best of conditions, the reflector absorbs some of the light. Also for fluorescent lamps and other lamps with phosphor coated bulbs, the bulb itself absorbs some of the light directed back down by the reflector. The glass cover, called a refractor, helps project the light down on the street in a desired pattern but some light is wasted by being directed up to the sky (light pollution). LED lamp assemblies (panels) do not require reflectors and can be designed to provide the desired coverage without a refractor.
• Higher light output even at low temperatures: While fluorescent lights are comparably energy efficient, on average they tend to have lesser light output at winter temperatures.

This is the advantages of LED light so its very good for today street lights.