A light fixture that is considered to have a length or surface area from which it emits light in a direction. A light fixture containing one or more fluorescent lamps is an example of a direction source.
POINTSOURCE
A light fixture that is considered to have negligible area and that emit light with approximately equal intensity in all directions. A light fixture containing a tungsten, halogen or similar bulb is an example of a point source.
SECURITYLIGHTING
A light fixture having specific purpose of directing occupants in an emergency, such as an illuminated exit sign or emergency flood light.
USERDEFINED
User-defined type.
NOTDEFINED
Undefined type.
Table 7.4.2.17.A
7.4.2.17.3 Formal representation
TYPE IfcLightFixtureTypeEnum = ENUMERATION OF
(DIRECTIONSOURCE
,POINTSOURCE
,SECURITYLIGHTING
,USERDEFINED
,NOTDEFINED);
END_TYPE;