Tag Archives: Showa 5 Type

The Evolution of the Japanese Imperial Army Sun Helmet: Part IV -1939-41

This is a special study of Japanese tropical helmets by Nick Komiya, and is presented in four parts.

1939 March, Design Patent Granted for the Type 98 Sun Helmet Liner System

type98-liner

On 10th March 1939, the Patent Office Granted Utility Model Number 264722 to a Shotaro Fujioka of Tokyo for his invention of the flexible liner size adjustment system he developed for the Army’s Type 98 Sun Helmet. Fujioka was an employee of the Army’s Main Clothing Depot. The Army had applied for this on 2nd April 1937, just before sending the prototypes out for testing in Taiwan. Similar to a patent, but simpler to obtain, it is the same as the German Gebrauchsmuster system (when items are marked DRGM). Continue reading →

The Evolution of the Japanese Imperial Army Sun Helmet: Part III -1930-39

This is a special study of Japanese tropical helmets by Nick Komiya, and is presented in four parts.

1930 May, Launch of the Second Model Sun Helmet Showa 5 Type (昭五式)

showa5type

7 years after the introduction of the IJA’s first sun helmet, a revamp of design was signed off by Emperor Hirohito on 14th May 1930. A whole new range of items got launched at the same time like new canteens, back packs, bread bags and the army jacket now got a vertical seam in the back to rationalize production efficiency.

The external appearance of the sun helmet did not change hugely, but instead of having a third vent grommet on each side, a top vent with cover was revived. Continue reading →