Here are some images from a small armor display that took place in Japan, 2015. As far as I know there is not a Japanese armor forum in Japan. From what I have been told, Japanese collectors are reluctant to post images of the items they own online. Small groups meet and discuss their armor items in person, exhibits often prohibit photography so this view of a small local exhibit is unusual. Nothing fancy, just a few very nice armors and related samurai items. Something I noticed, the armors are displayed with muchi (whips) instead of the usual saihai etc. This shows what you can do in a small space with limited recources.
Translation:Soma Art Club will host the 2015 Soma field Umaoi special exhibition with the samurai (Mononofu) until 2015/7/26 (Sun), is held in Soma Hirofumido bookstore second floor gallery.
Address: Soma City, Fukushima Prefecture Nakamura Tamachi 52 ( map here )