Infrared Portable Heater

infrared
The infrared region of the spectrum; infrared radiation
having or employing wavelengths longer than light but shorter than radio waves; lying outside the visible spectrum at its red end; "infrared radiation"; "infrared photography"
the infrared region of the electromagnetic spectrum; electromagnetic wave frequencies below the visible range; "they could sense radiation in the infrared"
'Infrared (IR)' light is electromagnetic radiation with a wavelength between 0.7 and 300 micrometres, which equates to a frequency range between approximately 1 and 430 THz.

portable
a small light typewriter; usually with a case in which it can be carried
A version of something, such as a small lightweight television or computer, that can be easily carried
easily or conveniently transported; "a portable television set"
of a motor designed to be attached to the outside of a boat's hull; "a portable outboard motor"
A small transportable building used as a classroom

heater
device that heats water or supplies warmth to a room
A heater is object that emits heat or causes another body to achieve a higher temperature. In a household or domestic setting, heaters are usually appliances whose purpose is to generate heating (i.e. warmth). Heaters exists for all states of matter, including solids, liquids and gases.
A fastball
A person or thing that heats, in particular a device for warming the air or water
A conductor used for indirect heating of the cathode of a thermionic tube
fastball: (baseball) a pitch thrown with maximum velocity; "he swung late on the fastball"; "he showed batters nothing but smoke"