The only details I have about this are contained in a 1977 book which provides an overview of all Philips factories operating around the world at that time, and the organisational structure of the company. See
Philips Wereldwijd - unfortunately all in Dutch. However Page 44 contains the details of the Chilean operations, which I can translate for you as below. It lists four sites in Chile.
At Maipu was a factory for the production of incandescent and fluorescent lamps, as well as the metal caps. It had 150 employees in 1974. The same site also produced glass with an additional 57 employees, and black/white cathode ray tubes with another 150 staff.
At Santiago was another factory that had a division belonging to the Light group, but produced only control gear for that business. It also assembled radios, television sets, and wooden cabinets for the same, with 370 employees.
At Arica was a third factory, producing personal care appliances (probably electric shavers).
The commercial HQ was also located at Santiago, although not necessarily within the factory there - no addresses are provided.
All four sites belonged to the entity "Philips Chilena SA de Productos Electricos", which was a 100%-owned subsidiary of the NV in Eindhoven. This leads me to believe that these sites were founded by Philips itself - usually in case Philips took over other competitors, the shareholding would not be 100% with Eindhoven. If you Google the name of the company provided above, or the names of the cities of the factories, probably you could find out more. So far I did not yet get around to doing this to research the histories of the Philips LATAM factories. In case you do turn up anything of interest, please do let me know!
The book linked above makes fascinating reading, even if you cannot understand the Dutch a lot can be deciphered from the company names and locations. It was written at a time when Philips was near the peak of its operations, employing over 400,000 people. Such scale of operations for any company is difficult to imagine even today. A useful overview appears on pages 154-159 which has a short listing of all countries of the world and the cities containing Philips factories, in matrix form listed against the H.I.G. (Hoofdindustriegroep, or business division). If you look in the column "Licht" (Light), you can see where all the lighting or lamp component factories were based.