Protecting lighting devices from thermal damage Cooling or heating arrangements specially adapted for lighting devices or systems

FMECHANICAL ENGINEERING LIGHTING HEATING WEAPONS BLASTING ENGINES OR PUMPS F21Lighting F21VDETAILS OF LIGHTING DEVICES, OF GENERAL APPLICATION

F21V29/00Protecting lighting devices from thermal damage Cooling or heating arrangements specially adapted for lighting devices or systems

F21V29/002Cooling arrangements F21V29/004Natural cooling F21V29/006Cooling devices or systems using condensation or evaporation of a fluid F21V29/02Cooling by forcing air or gas over or around the light source F21V29/10Arrangement of heat-generating components to reduce thermal damage F21V29/15Thermal insulation F21V29/20Cooling devices, cooling systems or arrangements thereof F21V29/2212the fins or blades being planar F21V29/30Forced cooling using liquids F21V29/40Forced cooling by electrically-powered actuators F21V29/402Multi-phase cooling systems actuated by pumps F21V29/50Cooling arrangements F21V29/502characterised by the adaption for cooling of specific components F21V29/503of light sources F21V29/504of refractors F21V29/505of reflectors F21V29/506of globes, bowls or cover glasses F21V29/507of means for protecting lighting devices from damage F21V29/508of electrical circuits F21V29/51using condensation or evaporation of a fluid F21V29/52electrically powered F21V29/54using thermoelectric means F21V29/56using liquid coolants F21V29/57characterised by control arrangements F21V29/58characterised by the coolants F21V29/59with forced flow of the coolant F21V29/60characterised by the use of a forced flow of gas F21V29/61characterised by control arrangements F21V29/63using electrically-powered vibrating means using ionic wind F21V29/65the gas flowing in a closed circuit F21V29/67characterised by the arrangement of fans F21V29/673the fans being used for intake F21V29/677the fans being used for discharging F21V29/70characterised by passive heat-dissipating elements F21V29/71using a combination of separate elements interconnected by heat-conducting means F21V29/713in direct thermal and mechanical contact of each other to form a single system F21V29/717using split or remote units thermally interconnected F21V29/73the elements being adjustable with respect to each other F21V29/74with fins or blades F21V29/745the fins or blades being planar and inclined with respect to the joining surface from which the fins or blades extend F21V29/75with fins or blades having different shapes, thicknesses or spacing F21V29/76with essentially identical parallel planar fins or blades F21V29/763the planes containing the fins or blades having the direction of the light emitting axis F21V29/767the planes containing the fins or blades having directions perpendicular to the light emitting axis F21V29/77with essentially identical diverging planar fins or blades F21V29/773the planes containing the fins or blades having the direction of the light emitting axis F21V29/777the planes containing the fins or blades having directions perpendicular to the light emitting axis F21V29/78with helically or spirally arranged fins or blades F21V29/80with pins or wires F21V29/81with pins or wires having different shapes, lengths or spacing F21V29/83the elements having apertures, ducts or channels F21V29/85characterised by the material F21V29/86Ceramics or glass F21V29/87Organic material F21V29/89Metals F21V29/90Heating arrangements