16.36 . � Sign , Externally Illuminated . A sign illuminated by light sources from the outside .
16.37 . � Sign , Internally Illuminated . A sign illuminated by light sources enclosed entirely within the sign cabinet and not directly visible from outside the sign .
16.38 . � Sign , Multicolor Changeable-Copy LED . A sign composed of LEDs of more than one color and programmable to allow changing displays .
16.39 . � Sign , Multicolor Fixed-Copy LED . A sign composed of LEDs of more than one color with a fixed ( not changeable or programmable ) copy display .
16.45 . � Temporary Lighting . Lighting which does not c and which will not be used for more than one th year , with one thirty ( 30 ) day extension . Temporar their nature are of limited duration ; for example construction projects .
16.46 . � Unshielded ( Light Fixture ). A light fixture const of the light emitted by the fixture , either directly fr indirectly by reflection or refraction from any part o horizontal ( see Figure 16.14b ).
16.40 . � Sign , Neon . A sign including luminous tubes formed into text , symbols or decorative elements and directly visible from outside the sign cabinet .
16.41 . � Sign , On-Site Advertising . A sign used primarily to advertise goods or services offered on the same parcel on which the sign is located . Such a sign may include incidental nonadvertising information ( for example time and temperature ; does not include publicly owned signs providing general interest information exclusively ( such as road names or highway conditions ).
16.42 . � Sign , Single-Color LED . A sign composed of single-color LEDs , including signs with fixed and changeable copy .
16.43 . � Sports Class I / II / III / IV . Level of sports play as defined by the Illuminating Engineering Society of North America . This level is primarily determined by the number and distance of spectators ; the higher recommended illumination levels facilitate the spectator ' s ability to view the action . Sports Class IV is the most common level , and is typical of municipal and amateur league and social level sports , with minimal accommodations for spectators , typically including bleachers located close to the field . Sports Class III includes increased accommodation for spectators . Sports Class II and Sports Class I apply to large sports facilities where thousands of spectators may be located hundreds of feet from the field , and television broadcasting may be a consideration .
16.44 . � Spot Lamp . A specific form of lamp designed to direct its output in a specific direction ( a beam ) with a reflector formed from the glass envelope of the lamp itself . Such lamps are so designated by the manufacturers and are often used in residential outdoor area lighting ( Figure 16.44 ).
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� Figure 16.44 . Spot lamps
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