Other

Mitsubishi Denki Kabushiki Kaisha

Masatoshi Ryohko

Ryohei Itatani

Michihiro Tsuchihashi

Masaaki Kimoto

Yutaka Murai

A gas discharge tube that is capable of lighting in different colors. The gas discharge tube, which may contain neon and mercury vapor, and which has its inner surface coated with a photoluminescent layer, is energized with a pulse current. The resultant color of the light emitted from the gas discharge tube depends in part on the frequency of the pulse current.

Gas discharge tube capable of lighting in different colors

A discharge lamp comprises a high pressure arc tube for high pressure and a low pressure arc tube for low pressure which is electrically connected in parallel to said high pressure arc tube in an outer tube. A lighting equipment comprises a high pressure arc tube for high pressure discharge and a low pressure arc tube for low pressure which is electrically connected in parallel to said high pressure arc tube; and a high frequency lighting starter having 1 KHz to 100 KHz for starting the discharge of said high pressure arc tube.

Growing community of inventors

Hyogo, Japan

Masatoshi Ryohko