公开(公告)号：EP4373213A1

公开(公告)日：2024-05-22

申请号：EP22841694.7

申请日：2022-03-10

申请人： Ushio Denki Kabushiki Kaisha

发明人： SAMEJIMA,Takanori ,  ODA,Koji

IPC分类号： H05B41/24 ,  A61L9/20 ,  H05B47/16

CPC分类号： H05B47/16 ,  A61L9/20 ,  H05B41/24 ,  Y02B20/00 ,  H05B41/2825 ,  H05B41/2828

摘要： A light source device that has achieved power saving and improved reliability without an increase in size in the entirety of the device, and a dielectric barrier discharge lamp lighting circuit and a dielectric barrier discharge lamp lighting method for achieving power saving and improved reliability without an increase in size of the entirety of the device are provided.
The light source device includes: a lighting circuit that includes a direct-current power source, a transformer, and a switching element, and generates electromotive force in a secondary winding of the transformer in accordance with switching of an ON state and an OFF state of the switching element; a dielectric barrier discharge lamp that is connected to the secondary winding of the transformer; and a controller that performs ON/OFF control on the switching element. The controller performs: a starting mode for repeating ON/OFF control on the switching element at a predetermined frequency at a time of starting; and a steady-state operation mode for alternately performing first control and second control after the dielectric barrier discharge lamp has been started, the first control being performed to repeat ON/OFF control on the switching element at the predetermined frequency, the second control being performed to maintain the switching element in the OFF state.

公开(公告)号：EP3882953A1

公开(公告)日：2021-09-22

申请号：EP19884173.6

申请日：2019-11-08

申请人： Ushio Denki Kabushiki Kaisha

发明人： ODA,Koji ,  ASAYAMA,Junya ,  OKAMOTO,Masashi

IPC分类号： H01J65/00 ,  H05B41/24

摘要： Provided is an excimer lamp light source device that achieves low cost and avoids the occurrence of narrowly-defined contracted discharge by adopting a lamp bulb having a simple structure and of the type in which a discharge current is passed in a tube axis direction.
The excimer lamp light source device includes: an excimer lamp that has a pair of external electrodes configured to induce an electric discharge in a discharge space of a lamp bulb and to cause a discharge current to flow in a tube axis direction of the lamp bulb, and that generates UV light in the discharge space by the discharge, the lamp bulb enclosing the discharge space filled with a discharge gas configured to generate xenon excimer molecules, having a shape in which both ends of a tubular body are hermetically sealed, and having an easily dischargeable substance layer that can easily cause a discharge formed on at least a part of a surface that is in contact with the discharge space; and an inverter having a transformer equipped with a secondary winding to which the external electrodes are connected in order to apply a high-voltage alternating current to the excimer lamp. The inverter supplies power lower than power that causes a linear discharge.